Electronic devices, styluses, and their driving and control methods

Abstract

An electronic device according to an embodiment includes: a display panel; a touch electrode layer disposed on the display panel, including at least one touch electrode; and conductive wiring disposed on the display panel, on the same layer as the touch electrode layer, generating a magnetic field signal for driving a stylus.

Description

Technical Field

[0001] This invention relates to electronic devices, styluses, and methods for driving and controlling them. Background Technology

[0002] Touch sensors are found in various electronic devices such as mobile phones, smartphones, tablet PCs, laptop computers, digital broadcasting terminals, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), and navigators.

[0003] In such electronic devices, touch sensors can be located on the display panel showing images or in an area of ​​the main body of the electronic device. Users interact with the electronic device by touching the touch sensor, enabling the device to provide an intuitive user interface.

[0004] For precise touch input, users can use a stylus. Such a stylus can transmit and receive signals with the touch sensor via electrical and / or magnetic means. In the case of a passive stylus, the stylus resonates with the driving signal applied to the touch sensor to generate a signal, and the touch sensor receives the resonant signal from the stylus to detect the touch position.

[0005] In the case of a passive stylus, the stylus resonates with the driving signal applied to the touch sensor to generate a signal, and the touch sensor receives the resonant signal of the stylus to detect the touch position. On the other hand, such a passive stylus has the following problem: when the touch sensor is touched simultaneously by a conductive object such as a human body, depending on the position and touch area of ​​the conductive object, the touch sensor may fail to detect the touch of the stylus.

[0006] Noise exists in electronic devices for various reasons, and this noise can degrade the sensing performance of the devices. In particular, in the case of styluses, the accuracy of touch sensing can be significantly reduced when noise with a frequency band close to the resonant frequency of the stylus is present.

[0007] The demand for electronic devices with the same or smaller size or thinner thickness than before and with a larger display screen is increasing. In order to provide a larger screen only when in use, foldable display devices or bendable display devices with a foldable and unfoldable structure have also been developed.

[0008] In the past, in order to receive sensing signals from the touch electrodes included in the touch sensor, an amplifier was provided in the touch sensor, which corresponds to each touch electrode.

[0009] On the other hand, for precise touch input on electronic devices with large screens, styluses can be used. Styluses can be categorized into active styluses and passive styluses based on whether they contain a battery and electronic components.

[0010] Active styluses have the advantages of superior basic performance and additional functions (pen pressure, hovering, buttons) compared to passive styluses, but they have the following disadvantages: they are difficult to use while the battery is charging, the pen itself is expensive, and they require a power source to charge the battery, so there are not many actual users except for some advanced users.

[0011] Passive styluses, compared to active styluses, have the advantages of being inexpensive and not requiring batteries. However, they suffer from the disadvantage of being less capable of precise touch recognition compared to active styluses. Recently, however, to achieve passive styluses capable of precise touch recognition, techniques such as EMR (Electro Magnetic Resonance) and capacitive resonance have been proposed as inductive resonance methods. In the case of passive styluses, the stylus resonates with the driving signal applied to the touch sensor to generate a signal, and the touch sensor receives the stylus's resonant signal to detect the touch position. On the other hand, such passive styluses have the following problem: when the touch sensor is simultaneously touched by a conductive object such as a human body, depending on the position and contact area of ​​the conductive object, the touch sensor may fail to detect the stylus's touch.

[0012] Passive styluses that operate without an internal power supply use electronic and / or magnetic signals received from a touch sensor to perform touch input, thus prompting research into ways to improve touch sensitivity.

[0013] However, a technique has recently been proposed to realize a passive stylus capable of precise touch recognition using resonant circuitry.

[0014] In particular, in the case of EMR (Electro-Magnetic Resonance) type passive styluses, after the digitizer transmits an electromagnetic signal to the pen, the digitizer receives the resonant signal input from the pen. That is, since signal transmission and reception are only performed through the digitizer, there is a problem that signal transmission and reception cannot be performed simultaneously and must be executed in a time-sharing manner. Similarly, in the case of ECR ​​(Electrically Coupled Resonance) type passive styluses, after the touch electrode transmits an electromagnetic signal to the pen, the touch electrode receives the resonant signal input from the pen. That is, since signal transmission and reception are only performed through the touch electrode, there is a problem that signal transmission and reception cannot be performed simultaneously and must be executed in a time-sharing manner.

[0015] Regarding the EMR method, the writing / drawing quality, which is the core function of the stylus, is superior. However, in addition to the capacitive touch panel, an EMR sensor board and an EMR driver IC must be added, which results in a thicker stylus and higher costs.

[0016] The capacitive resonance method uses a general capacitive touch sensor and touch controller IC, without additional costs and improves the performance of the IC, thus also supporting pen touch.

[0017] In capacitive resonance, the amplitude of the resonant signal must be large to enable the touch sensor to accurately recognize touches made by the stylus. Therefore, the frequency of the drive signal transmitted from the touch sensor to the stylus must be almost identical to the resonant frequency of the resonant circuit built into the stylus. However, according to conventional capacitive resonance methods, even if the resonant frequency and the drive signal frequency are the same, the following problem exists: due to the very small capacitance formed between the touch sensor that outputs the drive signal and the stylus tip that receives the drive signal, the signal attenuation is very large, making signal transmission difficult. As a result, despite long-term attempts by many touch controller IC suppliers, it is still impossible to output a sufficient output signal, and therefore, no company has yet successfully achieved mass production.

[0018] Therefore, in order to manufacture a capacitive resonant stylus capable of generating the maximum output signal, the design of the internal resonant circuit and the structure of the stylus become very important factors. Summary of the Invention

[0019] Technical issues

[0020] Embodiments of the present invention are used to provide a capacitive resonant stylus capable of generating sufficient output signals.

[0021] Embodiments of the present invention provide an electronic device, a stylus, and methods for driving and controlling the stylus that can prevent noise caused by a display panel.

[0022] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus having multiple resonant frequencies that enable the receiving of noise-reduced signals.

[0023] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus that can reduce noise in touch signals.

[0024] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus that can improve the touch sensing performance achieved by the stylus.

[0025] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus that can improve the touch sensing performance of a stylus in an environment where there is noise with a frequency band similar to the resonant signal of the stylus.

[0026] Embodiments of the present invention provide an electronic device, a stylus, and a driving and control method thereof that can improve the signal sensitivity for confirming the touch position of a stylus.

[0027] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus when the stylus is in contact with other conductive objects such as a human body.

[0028] Embodiments of the present invention provide an electronic device, a stylus, and methods for driving and controlling the stylus, capable of exploring the resonant frequency of a stylus.

[0029] Embodiments of the present invention provide an electronic device, a stylus, and methods for driving and controlling the same, capable of generating sufficient resonant signals.

[0030] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus that enables signals transmitted from a touch sensor to resonate.

[0031] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus that makes it easier to use.

[0032] Embodiments of the present invention provide a foldable electronic device, a stylus, and a method for driving and controlling the stylus, which are easier to use.

[0033] Embodiments of the present invention provide an antenna module implemented on a single layer, as well as an electronic device including the same, a stylus, and methods for driving and controlling the same.

[0034] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus that are capable of wireless charging during stylus use.

[0035] Embodiments of the present invention provide an electronic device including an antenna module driven by a small current, a stylus, and methods for driving and controlling the same.

[0036] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus, capable of outputting a drive signal corresponding to the resonant frequency of the stylus.

[0037] Embodiments of the present invention provide an electronic device, a stylus, and methods for driving and controlling the stylus capable of transmitting signals of appropriate size to a touch sensor.

[0038] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus that can perform wireless charging even without an additional wireless charging module.

[0039] Embodiments of the present invention provide an electronic device including a power-saving antenna module, a stylus, and methods for driving and controlling the stylus.

[0040] Embodiments of the present invention provide an electronic device, a stylus, and methods for driving and controlling the stylus capable of maintaining a resonant frequency.

[0041] Embodiments of the present invention provide an electronic device, a stylus, and methods for driving and controlling the stylus capable of touch input and sensor input.

[0042] Embodiments of the present invention provide an electronic device, a stylus, and methods for driving and controlling the stylus capable of changing the resonant frequency.

[0043] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the same magnetic field generated in a coil, capable of amplifying the magnetic field generated in the coil with the same voltage.

[0044] Embodiments of the present invention provide an electronic device, a stylus, and a method for driving and controlling the stylus, capable of wireless charging with maximum efficiency.

[0045] Embodiments of the present invention provide an electronic device, a stylus, and methods for driving and controlling the stylus that are capable of communicating with electronic devices via commercially available communication protocols.

[0046] Technical solution

[0047] To achieve the above or other objectives, a stylus according to one embodiment includes: a main body; a conductive tip exposed from the interior to the exterior of the main body; an inductor portion including a ferrite core located within the main body and a coil connected to the conductive tip and wound in multiple layers on at least a portion of the ferrite core; and a capacitor portion located within the main body and electrically connected to the inductor portion to form a resonant circuit.

[0048] The dielectric constant of the ferrite core is below 1000, the adjacent winding layers of the coil are alternately wound, and the coil is a wire in the shape of surrounding two or more insulated wires.

[0049] Furthermore, the ferrite core includes nickel, and the coil can be formed from Litz wire.

[0050] In addition, it includes a grounding part that can be electrically connected to a user, and a winding tube surrounding at least a portion of the ferrite core, the coil being wound around at least a portion of the winding tube.

[0051] It may also include a conductive blocking member surrounding at least a portion of the inductor portion. The blocking member may include a slit that blocks the generation of eddy currents, through which the two ends of the blocking portion may be spaced apart along a first direction that is the direction in which eddy currents are generated.

[0052] According to another embodiment, the stylus may include: a main body; a conductive tip exposed from the inside to the outside of the main body; a resonant circuit portion located inside the main body and connected to the conductive tip to resonate an electrical signal transmitted from the conductive tip; and a ground portion capable of being electrically connected to a user.

[0053] The resonant circuit section may include: an inductor section comprising a ferrite core and a coil located within the main body, the coil being electrically connected to the conductive tip and wound in multiple layers on at least a portion of the ferrite core; and a capacitor section located within the main body and electrically connected to the grounding portion and the conductive tip. In this case, the dielectric constant of the ferrite core is 1000 or less, the adjacent winding layers of the coil are wound obliquely in a zigzag pattern, and the coil is a wire in the shape of encircling two or more insulated wires.

[0054] In addition, the ferrite core contains nickel, and the coil can be formed from Litz wire.

[0055] In this case, the resonant circuit section can be composed of two or more inductor sections and one capacitor section connected in series. Furthermore, two or more LC resonant circuits in the resonant circuit section can be connected in series.

[0056] It may also include a conductive blocking member surrounding at least a portion of the resonant circuit portion. The blocking member may include a slit that blocks the generation of eddy currents, through which the two ends of the blocking portion may be spaced apart along a first direction that is the direction in which eddy currents are generated.

[0057] A stylus according to one embodiment includes: a housing; a conductive tip, at least a portion of which protrudes to the outside of the housing; a resonant circuit portion located inside the housing and connected to the conductive tip to resonate an electrical signal transmitted from the conductive tip; and a conductive blocking member disposed corresponding to the portion of the housing protruding to the outside of the conductive tip.

[0058] The blocking component can be a single conductive plate.

[0059] It includes a non-conductive holder portion, and a blocking member is configured correspondingly to the holder portion. It includes a slit that blocks the generation of eddy currents. Through the slit, the two ends of the blocking member are separated along a first direction, which may be the direction in which eddy currents are generated.

[0060] The blocking member also includes a connecting part that connects the two ends of the blocking member, and a grounding part that is connected to the blocking member and can be electrically connected to the user, wherein the connecting part is electrically connected to the grounding part.

[0061] The blocking member can be located between a region 0.1 mm away from the opening of the housing and a region 20 mm away from the opening, which is exposed to the outside from the conductive tip.

[0062] It includes a holding portion that is partially non-conductive, a blocking member that is correspondingly disposed to the holding portion, and includes a plurality of first blocking portions that are spaced apart from each other along a first direction and extend along a second direction perpendicular to the first direction, the first direction being the direction in which eddy currents are formed, and the plurality of first blocking portions may be conductive.

[0063] The blocking member also includes a connecting part that connects a plurality of first blocking parts, and a grounding part that is connected to the blocking member and can be electrically connected to the user, the connecting part being electrically connected to the grounding part.

[0064] It includes a holding portion that is partially non-conductive, a blocking member that is correspondingly disposed to the holding portion, and includes a plurality of second blocking portions that extend along a first direction and are spaced apart along a second direction perpendicular to the first direction, the first direction being the direction in which eddy currents are formed, and the two ends of each of the plurality of second blocking portions are spaced apart along the first direction.

[0065] It also includes: a grounding part, which is connected to the blocking member and can be electrically connected to the user; the resonant circuit part may include: an inductor part, which is connected between the conductive tip and the grounding part; and a capacitor part, which is connected between the conductive tip and the grounding part.

[0066] The blocking component also surrounds at least a portion of the inductor section.

[0067] The device includes a holding portion that is partially non-conductive and a main body portion that is separated from the conductive tip. A first portion of the blocking member, which is disposed adjacent to the conductive tip, is disposed corresponding to the holding portion. A second portion, which serves as a conductive plate and surrounds at least a portion of the inductor portion of the blocking member, is disposed corresponding to the main body portion. The device includes a slit that blocks the generation of eddy currents. Through the slit, the two ends of the second portion of the blocking member are separated along a first direction, which is the direction in which eddy currents are formed.

[0068] The device includes a non-conductive holding portion and a non-conductive main body portion separated from the conductive tip. A first portion of the blocking member, which is disposed adjacent to the conductive tip, is disposed correspondingly to the holding portion and includes a first slit to block the generation of eddy currents. A second portion of the blocking member, which surrounds at least a portion of the inductor portion, is disposed correspondingly to the main body portion and includes a second slit to block the generation of eddy currents. The two ends of the first portion of the blocking member are separated along a first direction through the first slit, and the two ends of the second portion of the blocking member are separated along the first direction through the second slit. The first direction may be the direction in which eddy currents are generated.

[0069] The housing includes a non-conductive holding portion and a non-conductive main body portion separated from the conductive tip. A first portion of the blocking member, which is disposed adjacent to the conductive tip, is disposed correspondingly to the holding portion and includes a plurality of first blocking portions spaced apart from each other along a first direction and extending along a second direction perpendicular to the first direction. A second portion of the blocking member, which surrounds at least a portion of the inductor portion, is disposed correspondingly to the main body portion and includes a plurality of third blocking portions spaced apart from each other along the first direction and extending along a second direction perpendicular to the first direction. The first direction is the direction in which eddy currents are formed. The plurality of first blocking portions and the plurality of third blocking portions are conductive.

[0070] The inductor section may include: a ferrite core; and a conductive coil connected to a conductive tip and wound around the ferrite core.

[0071] The blocking component can be located on the inner surface of the housing.

[0072] The blocking component can be located on the outer surface of the housing.

[0073] The blocking component is embedded between the inner and outer surfaces of the housing.

[0074] The blocking component may include a sheet printed with multiple conductive blocking portions.

[0075] The blocking component may include multiple blocking portions plated on the housing.

[0076] To achieve the above or other objectives, a touch device according to one embodiment may include: a touch panel including a plurality of touch electrodes; a driving / receiving unit that applies a first driving signal to the touch panel during driving in a first mode and applies a second driving signal different from the first driving signal to the touch panel during driving in a second mode; and a control unit that, during driving in the first mode, compares a first sensing signal received from the touch panel with a first threshold value to obtain first touch data, and during driving in the second mode, compares a second sensing signal received from the touch panel with a second threshold value to obtain second touch data, wherein the control unit may determine the second threshold value based on at least a portion of the first sensing signal.

[0077] The control unit can use the second sensing signal to obtain touch coordinates, and use the first sensing signal in the first sensing signal that corresponds to a predetermined area based on the touch coordinates to determine the second threshold value.

[0078] The plurality of touch electrodes includes a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction. During a first interval driven in the first mode, the driving / receiving unit applies a signal of a first frequency to the plurality of first touch electrodes as the first driving signal.

[0079] The driving / receiving unit may apply a signal of a second frequency, different from the first frequency, to all touch electrodes of the plurality of first touch electrodes and the plurality of second touch electrodes as the second driving signal during a portion of the second interval driven in the second mode.

[0080] The control unit can receive the first sensing signal from the plurality of second touch electrodes during the first interval.

[0081] The control unit can receive the second sensing signal from the plurality of first touch electrodes and the plurality of second touch electrodes within a portion of the second interval.

[0082] The frequency of the second driving signal can correspond to the resonant frequency of the stylus.

[0083] The first sensing signal is used to obtain the touch coordinates of the first touch object, and the second sensing signal is used to obtain the touch coordinates of the second touch object. The second touch object includes a stylus, and the first touch object may include a touch object with a different conductivity than the stylus.

[0084] When the first touch object and the second touch object simultaneously touch the touch panel, the control unit changes the second threshold value according to the distance between the touch location of the first touch object and the touch location of the second touch object, and acquires the second touch data generated by the second touch object.

[0085] When the first touch object and the second touch object simultaneously touch the touch panel, the control unit can change the second threshold value according to the touch pattern of the first touch object and obtain the second touch data generated by the second touch object.

[0086] The touch pattern may include the touch area or the touch style.

[0087] According to another embodiment, the touch device may include: a touch panel; a driving / receiving unit that applies a driving signal corresponding to the frequency of a resonant signal of a stylus to the touch panel and receives sensing signals from the touch panel; and a control unit that uses at least one sensing signal identified as a valid touch signal among the sensing signals to acquire touch data generated by the stylus. Furthermore, when the touch panel is touched solely by the stylus, the control unit identifies a sensing signal with a signal magnitude in a first range as the valid touch signal; and when the touch panel is touched simultaneously by the stylus and a touch object with a different conductivity than the stylus, the control unit may identify a sensing signal with a signal magnitude in a second range different from the first range as the valid touch signal.

[0088] The control unit can compare the sensing signal with a threshold value to identify the valid touch signal, and then use the threshold value in the state where the touch panel is touched by the stylus alone and the threshold value in the state where the touch panel is touched by the stylus and a touch object with a different conductivity than the stylus simultaneously.

[0089] The control unit can compare the sensing signal with a threshold value to identify the valid touch signal. When the touch panel is touched simultaneously by the stylus and a touch object with a different conductivity than the stylus, the sensing signal having the signal size of the second range can be amplified to have the signal size of the first range before being compared with the threshold value.

[0090] A touch detection method for a touch device according to one embodiment may include: applying a driving signal corresponding to a resonant signal of a stylus to the touch panel when the touch panel is touched alone by a stylus; receiving a sensing signal from the touch panel; identifying a valid touch signal in the sensing signal using a threshold value; and acquiring touch data generated by the stylus using the sensing signal identified as the valid touch signal in the sensing signal, wherein the identification step includes: identifying a sensing signal with a signal size of a first range in the sensing signal as the valid touch signal when the touch panel is touched alone by the stylus; and identifying a sensing signal with a signal size of a second range different from the first range in the sensing signal as the valid touch signal when the touch panel is touched simultaneously by the stylus and a touch object with a different conductivity than the stylus.

[0091] The threshold value for the touch panel when it is touched by the stylus alone can be different from the threshold value for the touch panel when it is touched by the stylus and a touch object with a different conductivity than the stylus simultaneously.

[0092] The step of identifying a sensing signal having a signal size within the second range as the valid touch signal may include: amplifying the sensing signal such that a sensing signal having a signal size within the second range has a signal size within the first range; and comparing the amplified sensing signal with the threshold value to identify the valid touch signal.

[0093] A touch detection method for a touch device according to another embodiment may include: entering a first mode and applying a first driving signal to a touch panel; receiving a first sensing signal from the touch panel corresponding to the first driving signal; comparing the first sensing signal with a first threshold value to obtain first touch data; entering a second mode and applying a second driving signal different from the first driving signal to the touch panel; receiving a second sensing signal from the touch panel corresponding to the second driving signal; determining a second threshold value based on the first sensing signal; and comparing the second sensing signal with the second threshold value to obtain second touch data.

[0094] The determining steps may include: using the second sensing signal to acquire touch coordinates; and using the first sensing signal in the first sensing signal that corresponds to a predetermined area based on the touch coordinates to determine the second threshold value.

[0095] The determination step may include: using either a first value or a second value obtained using the first sensing signal as the second threshold value.

[0096] The second value can be less than the first value.

[0097] According to another embodiment, the touch detection method of the touch device may further include: the step of obtaining the touch coordinates of a first touch object using the first touch data; and the step of obtaining the touch coordinates of a second touch object using the second touch data. Furthermore, the second touch object may include a stylus, and the first touch object may include a touch object with a different conductivity than the stylus.

[0098] The determining steps may include: when the first touch object and the second touch object simultaneously touch the touch panel, changing the second threshold value based on the distance between the touch location of the first touch object and the touch location of the second touch object.

[0099] The determining steps may include: when the first touch object and the second touch object simultaneously touch the touch panel, changing the second threshold value according to the touch pattern of the first touch object.

[0100] To achieve the above or other objectives, a touch device according to one embodiment includes: a touch panel including a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; a driving unit that applies a driving signal of a first frequency to the plurality of first touch electrodes and the plurality of second touch electrodes during at least one first interval within a frame period in a continuous frame period; a receiving unit that receives a sensing signal from the plurality of first touch electrodes and the plurality of second touch electrodes during a second interval following the first interval in which the driving signal of the first frequency is applied; and a control unit that controls the driving unit based on a signal output from the receiving unit, such that the frequency of the driving signal applied to the plurality of first touch electrodes and the plurality of second touch electrodes is changed during at least one first interval within a frame period following the first frame period.

[0101] To achieve the above or other objectives, a touch device according to one embodiment may include: a touch panel including a plurality of touch electrodes; and a drive / receiver unit that applies a drive signal having a frequency corresponding to the resonant frequency of a stylus to the plurality of touch electrodes and receives a sensing signal from the plurality of touch electrodes, the drive signal including a first drive signal and a second drive signal having a phase different from the first drive signal.

[0102] The touch device further includes: a control unit that acquires first touch data based on sensing signals received from the plurality of touch electrodes during a first interval; the drive / receive unit that applies the first drive signal to the plurality of touch electrodes during a second interval and applies the second drive signal to the plurality of touch electrodes during a third interval; the first interval may include at least one of the second interval and the third interval.

[0103] The control unit can further acquire second touch data based on sensing signals received from the plurality of touch electrodes within at least one of the second and third intervals.

[0104] The number of the second interval included in the first interval can be the same as the number of the third interval.

[0105] The number of the second interval and the number of the third interval included in the first interval may also be different.

[0106] Within the first interval, the second and third intervals can be configured alternately at a predetermined period.

[0107] Within the first interval, the second and third intervals may also be repeated at least once.

[0108] Within the first interval, the second interval and the third interval may each occur at least twice consecutively.

[0109] The number of consecutive occurrences in the second interval and the number of consecutive occurrences in the third interval can also be different within the first interval.

[0110] The number of consecutive occurrences in the second interval and the number of consecutive occurrences in the third interval can also be the same within the first interval.

[0111] When the sensing signal is a first sensing signal received from the plurality of touch electrodes corresponding to the first driving signal, the control unit multiplies a first value by the amplitude value of the first sensing signal to calculate a first amplitude value. When the sensing signal is a second sensing signal received from the plurality of touch electrodes corresponding to the second driving signal, the control unit multiplies a second value by the amplitude value of the second sensing signal to calculate a second amplitude value. The control unit then acquires the first touch data based on the first amplitude value and the second amplitude value acquired during a predetermined time period. The first value and the second value may have the same absolute value but different signs.

[0112] The first touch data or the second touch data may correspond to the change in capacitance of the touch electrode, the change in the sensing signal, or the ADC (analog to digital converter) output caused by the stylus touching the touch panel.

[0113] Furthermore, a touch detection method for a touch device according to one embodiment may include: selectively applying at least one of a first and a second driving signal having a frequency corresponding to the resonant frequency of a stylus and a different phase to a touch panel including a plurality of touch electrodes; receiving sensing signals from the plurality of touch electrodes; calculating the amplitude of each of the sensing signals; repeating the application step, the receiving step, and the calculation step a preset number of times; obtaining, each time the calculation step is performed, a final signal magnitude corresponding to the plurality of touch electrodes using the calculated amplitude; and obtaining touch data generated by the touch of the stylus based on the final signal magnitude.

[0114] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal within the preset number of times, such that the number of times the first drive signal is applied is the same as the number of times the second drive signal is applied.

[0115] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal within the preset number of times, such that the number of times the first drive signal is applied and the number of times the second drive signal is applied are different.

[0116] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal, such that the first drive signal and the second drive signal are applied alternately at a predetermined period.

[0117] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal within the preset number of times, such that the first drive signal and the second drive signal are applied at least once each.

[0118] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal, such that the first drive signal and the second drive signal are applied continuously at least twice, wherein the number of times the first drive signal is applied continuously and the number of times the second drive signal is applied continuously may be different within the preset number of times.

[0119] The selective application step may include: selectively applying at least one of the first driving signal and the second driving signal, such that the first driving signal and the second driving signal are applied continuously at least twice, wherein the number of times the first driving signal is applied continuously and the number of times the second driving signal is applied continuously within the preset number of times may be the same.

[0120] The step of obtaining the final signal magnitude may include: when the sensing signal is a first sensing signal received from the plurality of touch electrodes corresponding to the first driving signal, multiplying a first value by the amplitude value of the first sensing signal to calculate a first amplitude value; when the sensing signal is a second sensing signal received from the plurality of touch electrodes corresponding to the second driving signal, multiplying a second value by the amplitude value of the second sensing signal to calculate a second amplitude value; and obtaining the final signal magnitude based on the first amplitude value and the second amplitude value obtained within a predetermined time period, wherein the absolute values ​​of the first value and the second value may be the same but have different signs.

[0121] The step of acquiring the touch data may include: acquiring the touch data based on the touch electrode among the plurality of touch electrodes whose final signal magnitude is above a critical value.

[0122] To achieve the above or other objectives, a touch device according to one embodiment includes: a touch sensor unit located on a display portion of a display device that drives a plurality of pixels according to a vertical synchronization signal and a horizontal synchronization signal, including a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; a drive receiving unit that applies a drive signal to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a first interval, and receives a sensing signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second interval after the first interval; and a control unit that generates touch information using the sensing signal, wherein the drive signal is synchronized with the horizontal synchronization signal.

[0123] The drive receiving unit can simultaneously apply drive signals to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during the first interval, and receive sensing signals from at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during the second interval.

[0124] The drive signal can be synchronized with the pulses of a horizontal synchronization signal with a predetermined period.

[0125] The drive signal can be synchronized with the pulse of the vertical synchronization signal in each frame of a predetermined period.

[0126] The frequency of the drive signal can be an integer multiple of 2 or more of the frequency of the horizontal synchronization signal.

[0127] The characteristic could be that the sensing signal is received within an interval defined corresponding to the horizontal synchronization signal.

[0128] The interval defined in relation to the horizontal synchronization signal can be any interval other than the period during which data signals are written to at least a portion of the plurality of pixels.

[0129] The interval defined corresponding to the horizontal synchronization signal can be the period during which the scan signal applied to multiple pixels is at a disabled level.

[0130] The interval defined in relation to the horizontal synchronization signal can be any period other than the period during which a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels.

[0131] The drive receiving unit can receive the sensing signal according to the frequency of the drive signal that is synchronized with the frequency of the horizontal synchronization signal.

[0132] The time points for receiving the sensing signal can include at least two time points with opposite phases within one cycle of the frequency.

[0133] The time points for receiving the sensing signal can include at least two time points where the phase changes within one cycle of the frequency.

[0134] The sensing signal can be a resonant signal caused by a driving signal transmitted to at least one of a plurality of first touch electrodes and a plurality of second touch electrodes.

[0135] The display is located on the substrate, the thin film sealing layer is located on the display area, and multiple touch electrodes are located on the thin film sealing layer. The thin film sealing layer may have a thickness of 4μm to 10μm.

[0136] A driving method for a touch device according to one embodiment includes: receiving a horizontal synchronization signal from a signal control unit of a display device; applying a driving signal to at least one of a plurality of first touch electrodes arranged along a first direction of a touch sensor unit and a plurality of second touch electrodes arranged along a second direction intersecting the first direction during a first interval; receiving a sensing signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second interval after the first interval; and generating touch information using the sensing signal, wherein the driving signal is synchronized with the horizontal synchronization signal.

[0137] The step of applying a drive signal includes: during the first interval, simultaneously applying a drive signal to at least one of a plurality of first touch electrodes and at least one of a plurality of second touch electrodes; the step of receiving a sensing signal may include: during the second interval, receiving a sensing signal from at least one of a plurality of first touch electrodes and at least one of a plurality of second touch electrodes.

[0138] The drive signal can be synchronized with the pulses of a horizontal synchronization signal with a predetermined period.

[0139] The frequency of the drive signal can be an integer multiple of 2 or more of the frequency of the horizontal synchronization signal.

[0140] The characteristic could be that the sensing signal is received within an interval defined corresponding to the horizontal synchronization signal.

[0141] The interval defined in relation to the horizontal synchronization signal can be any interval other than the period during which data signals are written to at least a portion of the plurality of pixels.

[0142] The interval defined corresponding to the horizontal synchronization signal can be the period during which the scan signal applied to multiple pixels is at a disabled level.

[0143] The interval defined in relation to the horizontal synchronization signal can be any period other than the period during which a data signal is applied to at least one of the multiple data lines connected to the multiple pixels.

[0144] The step of receiving a sensing signal may include receiving the sensing signal during a period other than during which data signals are written to at least a portion of a plurality of pixels of a display device according to a horizontal synchronization signal.

[0145] The step of receiving a sensing signal may include receiving the sensing signal during a period when the scan signal applied to a plurality of pixels of the display device according to the horizontal synchronization signal is at a disabled level.

[0146] The step of receiving a sensing signal may include receiving the sensing signal during a period other than when a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels of a display device according to a horizontal synchronization signal.

[0147] A display device according to one embodiment includes: a display panel including a display area having a plurality of pixels; a data driving unit applying data signals to data lines connected to the plurality of pixels; a scan driving unit applying scan signals to scan lines connected to the plurality of pixels; a signal control unit controlling the data driving unit and the scan driving unit according to a horizontal synchronization signal; a touch panel overlapping the display area and including an active area having a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; and a touch controller driving the touch panel such that, during a first interval, a driving signal is applied to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes, and during a second interval after the first interval, a sensing signal is received from at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes, wherein the driving signal is synchronized with a pulse of the horizontal synchronization signal.

[0148] The frequency of the drive signal can be an integer multiple of 2 or more of the frequency of the horizontal synchronization signal.

[0149] A touch system according to one embodiment includes: a touch device and a stylus. The touch device includes: a touch sensor unit located on a display portion of a display device that drives a plurality of pixels according to a vertical synchronization signal and a horizontal synchronization signal, including a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; a drive receiving unit that applies a drive signal to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a first interval and receives a sensing signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second interval after the first interval; and a control unit that uses the sensing signal to generate touch information. The stylus includes a conductive tip and a resonant circuit unit connected to the conductive tip and resonating with the drive signal transmitted from the conductive tip. The sensing signal is a signal obtained by resonance of the resonant circuit unit, and the drive signal is a signal synchronized with the horizontal synchronization signal.

[0150] To achieve the above or other objectives, a touch device according to one embodiment includes a touch panel and a control unit. The touch panel includes a first touch electrode and a second touch electrode that sense external touch by means of changes in capacitance formed between them, and a third touch electrode arranged in a matrix. The control unit applies a first driving signal to at least one of the first, second, and third touch electrodes to detect the touch position of a first object, and applies a second driving signal and a third driving signal different from the second driving signal together to at least one of the first, second, and third touch electrodes to detect the touch position of a second object different from the first object. The first driving signal has a frequency different from the second driving signal, and the second driving signal is a signal that resonates with the second object.

[0151] The control unit can apply a second drive signal to at least one of the first touch electrode, the second touch electrode, and the third touch electrode, which are located in areas other than the touch position of the first object.

[0152] The control unit can apply a third driving signal to at least one of the first touch electrode, the second touch electrode, and the third touch electrode located at the touch position of the first object.

[0153] During the first interval, the control unit may apply a second driving signal to at least one of the first, second, and third touch electrodes. During the second interval after the first interval, depending on the distance between the touch position of the first object and the touch position of the second object, the control unit may apply only the second driving signal or apply the second and third driving signals together to enable the detection of the position of the second object.

[0154] When the distance between the touch position of the first object and the touch position of the second object exceeds a critical value, the control unit can apply the second drive signal and the third drive signal together.

[0155] During the first interval, the control unit can apply a second driving signal to all the third touch electrodes, and during the second interval after the first interval, apply a third driving signal to the third touch electrode corresponding to the touch position of the first object based on the distance between the touch position of the first object and the touch position of the second object, and apply a second driving signal to the remaining third touch electrodes.

[0156] The control unit may also apply a second drive signal to all of the first and second touch electrodes during the first and second intervals.

[0157] During the first interval, the control unit may also apply a second driving signal to all of the first and second touch electrodes. During the second interval, based on the distance between the touch position of the first object and the touch position of the second object, a third driving signal may be applied to the first and second touch electrodes corresponding to the touch position of the first object, and the second driving signal may be applied to the remaining first and second touch electrodes.

[0158] The first object includes at least one of the fingers and the palm, and the second object may be a stylus.

[0159] The third driving signal can have a 180-degree phase difference with the second driving signal.

[0160] The third drive signal can maintain a constant voltage.

[0161] A touch device according to another embodiment may include: a plurality of first sensor patterns and a plurality of second sensor patterns, each including an outer contour line and an inner contour line; a plurality of first connecting patterns electrically connecting the plurality of first sensor patterns; a plurality of second connecting patterns electrically connecting the plurality of second sensor patterns and located on a different layer from the plurality of first connecting patterns; a plurality of third sensor patterns disposed in a planar plane in an inner contour region surrounded by an inner contour line; and a plurality of third connecting patterns electrically connecting the plurality of third sensor patterns, wherein the plurality of third sensor patterns may be located in the inner contour region of the plurality of first sensor patterns and the plurality of second sensor patterns in the planar plane.

[0162] Multiple third connection patterns can be located on the same layer as multiple second connection patterns.

[0163] The touch device also includes an insulating layer disposed between a plurality of first connection patterns and a plurality of second connection patterns, the plurality of second connection patterns and a plurality of third connection patterns being located on a first layer below the insulating layer, a plurality of first sensor patterns and a plurality of second sensor patterns and a plurality of first connection patterns being located on a second layer above the insulating layer, and the plurality of second sensor patterns penetrating the insulating layer between the first layer and the second layer and being connected to the plurality of second connection patterns.

[0164] Multiple third sensor patterns are respectively disposed on the first layer. On the plane, each of the multiple third sensor patterns does not overlap with each of the multiple first sensor patterns and the multiple second sensor patterns.

[0165] At least one of the plurality of third connecting patterns can connect the third sensor pattern located in the inner contour region of the first sensor pattern and the third sensor pattern located in the inner contour region of the second sensor pattern.

[0166] It also includes: a first driving / receiving unit electrically connected to a plurality of first sensor patterns; a second driving / receiving unit electrically connected to a plurality of second sensor patterns; and a third driving / receiving unit electrically connected to a plurality of third sensor patterns. In a first interval, at least one of the first driving / receiving unit, the second driving / receiving unit, and the third driving / receiving unit is driven to detect the touch position of a first object. In a second interval after the first interval, at least one of the first driving / receiving unit, the second driving / receiving unit, and the third driving / receiving unit is driven to detect the touch position of a second object. The first object includes at least one of a finger and a palm, and the second object may be a stylus.

[0167] Within the second interval, the signal applied to the sensor pattern corresponding to the position of the first object and the signal applied to the sensor pattern corresponding to the position of the second object may be different.

[0168] According to another embodiment, a touch device includes: a first sensor pattern and a second sensor pattern that sense external touch by means of changes in capacitance formed between them, and each having an opening; and a third sensor pattern that is located in the same layer as the first sensor pattern and the second sensor pattern and is located within each of the respective openings, wherein two or more adjacent third sensor patterns in the third sensor pattern are interconnected to form a sensor electrode, and the two or more adjacent third sensor patterns that form a sensor electrode are respectively located within the openings included in at least the first sensor pattern and the openings included in the second sensor pattern.

[0169] Part of the third sensor pattern is floating.

[0170] To achieve the above or other objectives, a stylus according to one embodiment includes: a main body; a conductive tip exposed from the inside of the main body to the outside; a grounding portion capable of being electrically connected to a user; and a resonant circuit portion located within the main body and electrically connected between the conductive tip and the grounding portion, including at least one resonant circuit that resonates with electrical signals of different frequencies transmitted from the conductive tip and outputs resonant signals of different frequencies.

[0171] The resonant circuit section includes: a first resonant circuit for resonating with an electrical signal at a first frequency; and a second resonant circuit for resonating with an electrical signal at a second frequency. During the first interval, the first resonant circuit outputs a resonant signal through a conductive tip, and during the second interval, which is different from the first interval, the second resonant circuit outputs a resonant signal through a conductive tip.

[0172] The first and second resonant circuits can alternately output resonant signals.

[0173] The first resonant circuit includes: a first inductor connected between a conductive tip and a second resonant circuit; and a first capacitor connected between a conductive tip and the second resonant circuit. The second resonant circuit includes: a second inductor connected between a ground portion and the first resonant circuit; and a second capacitor connected between a ground portion and the first resonant circuit. The first inductor and the second inductor have mutually separated ferrite cores.

[0174] The first resonant circuit is connected between the conductive tip and the second resonant circuit, and the second resonant circuit is connected between the first resonant circuit and the ground.

[0175] The resonant circuit section can respond to an electrical signal whose frequency changes over time and output a resonant signal whose frequency changes over time.

[0176] A touch device according to one embodiment includes: a touch panel including first touch electrodes arranged along a first direction and second touch electrodes arranged along a second direction intersecting the first direction; and a control unit that, during a first interval within a touch report frame, samples a signal transmitted from at least one of the first touch electrodes and the second touch electrode according to a first sampling frequency related to a first driving frequency, and determines whether a noise signal is received; if a noise signal is determined to be received, applies a second driving signal having a second driving frequency different from the first driving frequency to at least one of the first touch electrodes and the second touch electrode during a second interval after the first interval.

[0177] The control unit can sample the signal transmitted from at least one of the first touch electrode and the second touch electrode according to the second sampling frequency associated with the second drive signal during the third interval after the second interval to receive the sensing signal.

[0178] During the third interval, the signal transmitted from at least one of the first touch electrode and the second touch electrode can be a signal obtained through resonance of the second drive signal.

[0179] During the first interval after the end of the third interval, the control unit can sample the signal transmitted from at least one of the first touch electrode and the second touch electrode according to the second sampling frequency related to the second driving frequency, and determine whether a noise signal is received.

[0180] When the control unit determines that no noise signal is received, it may apply a first driving signal having a first driving frequency to at least one of the first touch electrode and the second touch electrode during the second interval after the first interval.

[0181] The control unit can sample the signal transmitted from at least one of the first touch electrode and the second touch electrode according to the first sampling frequency during the third interval after the second interval, so as to receive the sensing signal.

[0182] A touch device according to another embodiment includes: a touch panel including first touch electrodes arranged along a first direction and second touch electrodes arranged along a second direction intersecting the first direction; and a control unit that, during a touch report frame including a plurality of first intervals, during a first number of first intervals, applies a first driving signal having a first driving frequency to at least one of the first touch electrodes and the second touch electrodes, samples a signal transmitted from at least one of the first touch electrodes and the second touch electrodes according to a first sampling frequency associated with the first driving frequency to receive a first sensing signal, and during a second number of first intervals, applies a second driving signal having a second driving frequency different from the first driving frequency to at least one of the first touch electrodes and the second touch electrodes, samples a signal transmitted from at least one of the first touch electrodes and the second touch electrodes according to a second sampling frequency associated with the second driving frequency to receive a second sensing signal.

[0183] The control unit can use the first sensing signal and the second sensing signal to determine whether a noise signal is received. If a noise signal is received, the first number and the second number are changed during the next touch report frame.

[0184] The control unit can increase the first number when the SNR (signal-noise ratio) of the first sensing signal is greater than the SNR of the second sensing signal, and increase the second number when the SNR of the second sensing signal is greater than the SNR of the first sensing signal.

[0185] The first and second numbers can be the same.

[0186] A touch system according to one embodiment includes: a stylus according to one embodiment; and a touch device according to any one of the embodiments.

[0187] To achieve the above or other objectives, an electronic device according to one embodiment includes: a loop coil; a touch panel including a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; a driving unit that applies a driving signal of a first frequency to the loop coil during at least one first interval within a frame period in a series of frame periods; a receiving unit that receives sensing signals from the plurality of first touch electrodes and the plurality of second touch electrodes during a second interval following the first interval in which the driving signal of the first frequency is applied; and a control unit that, based on a signal output from the receiving unit, controls the driving unit to change the frequency of the driving signal applied to the loop coil during at least one first interval within a frame period following the first frame period.

[0188] To achieve the above or other objectives, an electronic device according to one embodiment may include: a loop coil; a touch panel including a plurality of touch electrodes; and a drive / receiver unit that applies a drive signal having a frequency corresponding to the resonant frequency of a stylus to the loop coil and receives a sensing signal from the plurality of touch electrodes, the drive signal including a first drive signal and a second drive signal having a phase different from the first drive signal.

[0189] The electronic device further includes: a control unit that acquires first touch data based on sensing signals received from the plurality of touch electrodes during a first interval; the driving / receiving unit that applies the first driving signal to the plurality of touch electrodes during a second interval and applies the second driving signal to the plurality of touch electrodes during a third interval; the first interval may include at least one of the second interval and the third interval.

[0190] The control unit may further acquire second touch data based on sensing signals received from the plurality of touch electrodes in at least one of the second and third intervals.

[0191] The number of the second interval and the number of the third interval included in the first interval can be the same for each other.

[0192] The number of the second interval included in the first interval and the number of the third interval may be different.

[0193] Within the first interval, the second and third intervals can be configured alternately at a predetermined period.

[0194] Within the first interval, the second and third intervals may be repeated at least once.

[0195] Within the first interval, the second interval and the third interval can each occur at least twice consecutively.

[0196] Within the first interval, the number of consecutive occurrences in the second interval and the number of consecutive occurrences in the third interval can also be different.

[0197] Within the first interval, the number of consecutive occurrences in the second interval and the number of consecutive occurrences in the third interval can also be the same.

[0198] When the sensing signal is a first sensing signal received from the plurality of touch electrodes corresponding to the first driving signal, the control unit multiplies a first value by the amplitude value of the first sensing signal to calculate a first amplitude value. When the sensing signal is a second sensing signal received from the plurality of touch electrodes corresponding to the second driving signal, the control unit multiplies a second value by the amplitude value of the second sensing signal to calculate a second amplitude value. The control unit then acquires the first touch data based on the first amplitude value and the second amplitude value acquired within a predetermined time period. The first value and the second value may have the same absolute value but different signs.

[0199] The first touch data or the second touch data may correspond to the change in capacitance of the touch electrode, the change in the sensing signal, or the ADC (analog-to-digital converter) output caused by the stylus touching the touch panel.

[0200] Furthermore, a touch detection method for an electronic device according to one embodiment may include: selectively applying at least one of a first driving signal and a second driving signal having a frequency corresponding to the resonant frequency of a stylus and a different phase to a loop coil; receiving sensing signals from a plurality of touch electrodes; calculating the amplitude of each of the sensing signals; repeating the application step, the receiving step, and the calculation step a preset number of times; obtaining a final signal magnitude corresponding to each of the plurality of touch electrodes using the calculated amplitude each time the calculation step is performed; and obtaining touch data generated by the touch of the stylus based on the final signal magnitude.

[0201] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal within the preset number of times, such that the number of times the first drive signal is applied is the same as the number of times the second drive signal is applied.

[0202] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal within the preset number of times, such that the number of times the first drive signal is applied and the number of times the second drive signal is applied are different.

[0203] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal to alternately apply the first drive signal and the second drive signal at a predetermined period.

[0204] The selective application step may include: selectively applying at least one of the first drive signal and the second drive signal within the preset number of times, such that the first drive signal and the second drive signal are applied at least once each.

[0205] The selective application step includes: selectively applying at least one of the first driving signal and the second driving signal such that the first driving signal and the second driving signal are applied continuously at least twice, wherein the number of times the first driving signal is applied continuously and the number of times the second driving signal is applied continuously may be different within the preset number of times.

[0206] The selective application step includes: selectively applying at least one of the first driving signal and the second driving signal such that the first driving signal and the second driving signal are applied continuously at least twice, wherein the number of times the first driving signal is applied continuously and the number of times the second driving signal is applied continuously within the preset number of times may be the same.

[0207] The step of obtaining the final signal magnitude includes: if the sensing signal is a first sensing signal received from the plurality of touch electrodes corresponding to the first driving signal, then multiplying a first value by the amplitude value of the first sensing signal to calculate a first amplitude value; if the sensing signal is a second sensing signal received from the plurality of touch electrodes corresponding to the second driving signal, then multiplying a second value by the amplitude value of the second sensing signal to calculate a second amplitude value; and obtaining the final signal magnitude based on the first amplitude value and the second amplitude value obtained during a predetermined time period, wherein the absolute values ​​of the first value and the second value may be the same but have different signs.

[0208] The step of acquiring the touch data may include: acquiring the touch data based on the touch electrode among the plurality of touch electrodes whose final signal magnitude is above a critical value.

[0209] To achieve the above or other objectives, an electronic device according to one embodiment includes: a loop coil; a touch sensor unit located at a display portion of a display unit that drives a plurality of pixels according to a vertical synchronization signal and a horizontal synchronization signal, including a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; a drive receiving unit that applies a drive signal to the loop coil during a first interval and receives a sensing signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second interval after the first interval; and a control unit that generates touch information using the sensing signal, wherein the drive signal is synchronized with the horizontal synchronization signal.

[0210] The drive receiving unit can simultaneously apply drive signals to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during the first interval, and receive sensing signals from at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during the second interval.

[0211] The drive signal can be synchronized with the pulses of a horizontal synchronization signal with a predetermined period.

[0212] The drive signal can be synchronized with the pulses of the vertical synchronization signal according to each predetermined period of frames.

[0213] The frequency of the drive signal can be an integer multiple of 2 or more of the frequency of the horizontal synchronization signal.

[0214] The characteristic may be that the sensing signal is received within a range defined corresponding to the horizontal synchronization signal.

[0215] The interval defined in relation to the horizontal synchronization signal can be any interval other than the period during which data signals are written to at least a portion of the plurality of pixels.

[0216] The interval defined corresponding to the horizontal synchronization signal can be the period during which the scan signal applied to multiple pixels is at a disabled level.

[0217] The interval defined in relation to the horizontal synchronization signal can be any period other than the period during which a data signal is applied to at least one of the multiple data lines connected to the multiple pixels.

[0218] The drive receiving unit receives the sensing signal according to the frequency of the drive signal synchronized with the frequency of the horizontal synchronization signal.

[0219] The time points for receiving the sensing signal include at least two time points with opposite phases within one cycle of the frequency.

[0220] The receiving time points of the sensed signal include two time points where the phase changes within one cycle of the frequency.

[0221] The sensing signal can be a signal obtained by transmitting a resonant signal based on the driving signal to at least one of a plurality of first touch electrodes and a plurality of second touch electrodes.

[0222] The display is located on the substrate, and a thin film sealing layer is disposed on the display area. Multiple touch electrodes are located on the thin film sealing layer, and the thin film sealing layer may have a thickness of 4μm to 10μm.

[0223] A driving method for an electronic device according to one embodiment includes: receiving a horizontal synchronization signal from a signal control unit of a display device; applying a driving signal to at least one of a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction during a first interval; receiving a sensing signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second interval after the first interval; and generating touch information using the sensing signal, wherein the driving signal is synchronized with the horizontal synchronization signal.

[0224] The step of applying a drive signal includes: during the first interval, simultaneously applying a drive signal to at least one of a plurality of first touch electrodes and at least one of a plurality of second touch electrodes; the step of receiving a sensing signal may include: during the second interval, receiving a sensing signal from at least one of a plurality of first touch electrodes and at least one of a plurality of second touch electrodes.

[0225] The drive signal can be synchronized with the pulses of a horizontal synchronization signal with a predetermined period.

[0226] The frequency of the drive signal can be an integer multiple of 2 or more of the frequency of the horizontal synchronization signal.

[0227] The characteristic may be that the sensing signal is received within a range defined corresponding to the horizontal synchronization signal.

[0228] The interval defined in relation to the horizontal synchronization signal can be any interval other than the period during which data signals are written to at least a portion of the plurality of pixels.

[0229] The interval defined corresponding to the horizontal synchronization signal can be the period during which the scan signal applied to multiple pixels is at a disabled level.

[0230] The interval defined in relation to the horizontal synchronization signal can be any period other than the period during which a data signal is applied to at least one of the multiple data lines connected to the multiple pixels.

[0231] The step of receiving a sensing signal may include receiving the sensing signal during a period other than during which data signals are written to at least a portion of a plurality of pixels of the display device according to a horizontal synchronization signal.

[0232] The step of receiving a sensing signal may include receiving the sensing signal during a period when the scan signal applied to a plurality of pixels of the display device according to the horizontal synchronization signal is at a disabled level.

[0233] The step of receiving a sensing signal may include receiving the sensing signal during a period other than when a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels of a display device according to a horizontal synchronization signal.

[0234] A display device according to one embodiment includes: a display panel including a display area having a plurality of pixels; a data driving unit applying data signals to data lines connected to the plurality of pixels; a scan driving unit applying scan signals to scan lines connected to the plurality of pixels; a signal control unit controlling the data driving unit and the scan driving unit according to a horizontal synchronization signal; a touch panel overlapping the display area and including an active area having a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; and a touch controller driving the touch panel such that, during a first interval, a driving signal is applied to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes, and during a second interval after the first interval, a sensing signal is received from at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes, wherein the driving signal is synchronized with a pulse of the horizontal synchronization signal.

[0235] The frequency of the drive signal can be an integer multiple of 2 or more of the frequency of the horizontal synchronization signal.

[0236] A touch system according to one embodiment includes: an electronic device and a stylus. The electronic device includes: a touch sensor unit located on a display portion of a display device that drives a plurality of pixels according to a vertical synchronization signal and a horizontal synchronization signal, and including a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; a drive receiving unit that applies a drive signal to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a first interval, and receives a sensing signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second interval after the first interval; and a control unit that uses the sensing signal to generate touch information. The stylus includes a conductive tip and a resonant circuit unit connected to the conductive tip and resonating with the drive signal transmitted from the conductive tip. The sensing signal is a signal obtained by resonance of the resonant circuit unit, and the drive signal is a signal synchronized with the horizontal synchronization signal.

[0237] To achieve the above or other objectives, a stylus according to one embodiment includes: a main body; a conductive tip exposed from the inside of the main body to the outside; an inductor portion including a ferrite core located within the main body and a coil connected to the conductive tip and wound in multiple layers on at least a portion of the ferrite core; and a capacitor portion located within the main body and electrically connected to the inductor portion to form a resonant circuit.

[0238] The dielectric constant of the ferrite core is below 1000, the adjacent winding layers of the coil are wound alternately, and the coil is a wire in the shape of surrounding two or more insulated wires.

[0239] In addition, the ferrite core contains nickel, and the coil may include Litz wire.

[0240] In addition, it may include: a grounding portion capable of being electrically connected to a user, and may also include a winding tube surrounding at least a portion of the ferrite core, the coil being wound on at least a portion of the winding tube.

[0241] It may also include: a conductive blocking member surrounding at least a portion of the inductor portion. The blocking member may include a slit that blocks the generation of eddy currents, through which the two ends of the blocking portion may be spaced apart along a first direction that is the direction in which eddy currents are generated.

[0242] According to another embodiment, the stylus may include: a main body; a conductive tip exposed from the inside to the outside of the main body; a resonant circuit portion located inside the main body and connected to the conductive tip to resonate an electrical signal transmitted from the conductive tip; and a ground portion capable of being electrically connected to a user.

[0243] The resonant circuit section may include: an inductor section comprising a ferrite core located within the main body and a coil electrically connected to the conductive tip, with multiple layers wound on at least a portion of the ferrite core; and a capacitor section located within the main body and electrically connected to the grounding portion and the conductive tip. In this case, the dielectric constant of the ferrite core is 1000 or less, adjacent winding layers of the coil are wound obliquely in a zigzag pattern, and the coil may be a wire in the form of surrounding two or more insulated wires.

[0244] In addition, the ferrite core contains nickel, and the coil can be formed from Litz wire.

[0245] At this time, the resonant circuit section may include two or more inductor sections and a capacitor section connected in series. Furthermore, two or more LC resonant circuits of the resonant circuit section may be connected in series.

[0246] It may also include a conductive blocking member surrounding at least a portion of the resonant circuit portion. The blocking member may include a slit that blocks the generation of eddy currents, through which the two ends of the blocking portion may be spaced apart along a first direction that is the direction in which eddy currents are generated.

[0247] A stylus according to one embodiment includes: a housing; a conductive tip, at least a portion of which protrudes to the outside of the housing; a resonant circuit portion located inside the housing to resonate a magnetic signal; and a conductive blocking member disposed corresponding to the portion of the housing protruding to the outside of the conductive tip.

[0248] The blocking component can be a single conductive plate.

[0249] It includes a non-conductive holding part, and a blocking member is configured correspondingly to the holding part. It includes a slit that blocks the generation of eddy currents. Through the slit, the two ends of the blocking member are separated along a first direction, which may be the direction in which eddy currents are generated.

[0250] The blocking component also includes: a connecting part that connects the two ends of the blocking component, and a grounding part that is connected to the blocking component and can be electrically connected to the user, wherein the connecting part is electrically connected to the grounding part.

[0251] The blocking member can be located between a region 0.1 mm away from the opening of the housing exposed to the outside from the conductive tip and a region 20 mm away from the opening.

[0252] It includes a non-conductive holding portion, and a blocking member is configured correspondingly to the holding portion. It includes a plurality of first blocking portions, which are spaced apart from each other along a first direction and extend along a second direction perpendicular to the first direction. The first direction is the direction in which eddy currents are formed. The plurality of first blocking portions may be conductive.

[0253] The blocking member also includes: a connecting part that connects to a plurality of first blocking parts, and a grounding part that is connected to the blocking member and can be electrically connected to the user, wherein the connecting part can be electrically connected to the grounding part.

[0254] It includes a non-conductive holding portion, and a blocking member is configured correspondingly to the holding portion. It includes a plurality of second blocking portions extending along a first direction and spaced apart along a second direction perpendicular to the first direction. The first direction is the direction in which eddy currents are formed. The two ends of each of the plurality of second blocking portions are spaced apart along the first direction.

[0255] It also includes: a grounding part, connected to the blocking member, capable of being electrically connected to the user; the resonant circuit part may include: an inductor part, connected between the conductive tip and the grounding part; and a capacitor part, connected between the conductive tip and the grounding part.

[0256] The blocking component also surrounds at least a portion of the inductor section.

[0257] It includes a non-conductive holding portion and a non-conductive main body portion separated from the conductive tip. A first portion of the blocking member, which is arranged adjacent to the conductive tip, is arranged correspondingly to the holding portion. A second portion, which serves as a conductive plate and surrounds at least a portion of the inductor portion of the blocking member, is arranged correspondingly to the main body portion. It also includes a slit that blocks the generation of eddy currents. Through the slit, the two ends of the second portion of the blocking member are separated along a first direction, which may be the direction in which eddy currents are generated.

[0258] The device includes a non-conductive holding portion and a non-conductive main body portion separated from the conductive tip. A first portion of the blocking member, which is disposed adjacent to the conductive tip, is disposed correspondingly to the holding portion and includes a first slit to block the generation of eddy currents. A second portion of the blocking member, which surrounds at least a portion of the inductor portion, is disposed correspondingly to the main body portion and includes a second slit to block the generation of eddy currents. The two ends of the first portion of the blocking member are separated along a first direction through the first slit, and the two ends of the second portion of the blocking member are separated along the first direction through the second slit. The first direction may be the direction in which eddy currents are generated.

[0259] The housing includes a non-conductive holding portion and a non-conductive main body portion separated from the conductive tip. A first portion disposed adjacent to the conductive tip of the blocking member is disposed corresponding to the holding portion. The housing includes a plurality of first blocking portions that are spaced apart from each other along a first direction and extend along a second direction perpendicular to the first direction. A second portion of the blocking member that surrounds at least a portion of the inductor portion is disposed corresponding to the main body portion and includes a plurality of third blocking portions that are spaced apart from each other along the first direction and extend along a second direction perpendicular to the first direction. The first direction is the direction in which eddy currents are formed. The plurality of first blocking portions and the plurality of third blocking portions may be conductive.

[0260] The inductor section may include: a ferrite core; and a conductive coil connected to a conductive tip and wound around the ferrite core.

[0261] The blocking component can be located on the inner surface of the housing.

[0262] The blocking component can be located on the outer surface of the housing.

[0263] The blocking component can be embedded between the inner and outer surfaces of the housing.

[0264] The blocking component may include a sheet printed with multiple conductive blocking portions.

[0265] The blocking component may include multiple blocking portions plated onto the housing.

[0266] To achieve the above or other objectives, a stylus according to one embodiment includes: a main body; a conductive tip exposed from the inside of the main body to the outside; a resonant circuit portion located inside the main body and connected to the conductive tip to resonate an electrical signal transmitted from the conductive tip; and a conductive blocking member surrounding at least a portion of the resonant circuit portion.

[0267] It may also include a grounding part that can be electrically connected to the user.

[0268] The resonant circuit section may include: an inductor section connected between the conductive tip and the ground section; and a capacitor section connected between the conductive tip and the ground section.

[0269] The blocking section can only surround the inductor section.

[0270] The blocking part includes a slit that blocks the generation of eddy currents. Through the slit, the two ends of the blocking part are separated along a first direction, which may be the direction in which eddy currents are generated.

[0271] The blocking part further includes a connecting part, which is spaced apart from the position of the inductor part in the main body part along a second direction perpendicular to the first direction and connects the two ends of the blocking part.

[0272] The connecting part is electrically connected to the grounding part.

[0273] The blocking portion includes: a plurality of first blocking portions spaced apart from each other along a first direction and extending along a second direction perpendicular to the first direction, the first direction being the direction in which eddy currents are formed, and the plurality of first blocking portions being conductive.

[0274] The blocking part also includes a connecting part, which is spaced apart from the position of the inductor part in the main body part along the second direction, and connects to a plurality of first blocking parts.

[0275] The connecting part is electrically connected to the grounding part.

[0276] The blocking portion includes: a plurality of second blocking portions extending along a first direction and spaced apart along a second direction perpendicular to the first direction, the first direction being the direction in which eddy currents are formed, and the two ends of each of the plurality of second blocking portions being spaced apart along the first direction.

[0277] The blocking portion may further include: a connecting portion extending along the second direction to connect a plurality of second blocking portions; and an additional grounding portion spaced apart from the position of the inductor portion within the main body portion along the second direction and connected to the connecting portion.

[0278] Add an additional grounding part and make an electrical connection between the grounding parts.

[0279] The inductor section may include: a ferrite core and a conductive coil connected to a conductive tip and wound around the ferrite core.

[0280] The capacitor section may include multiple capacitors connected in parallel and having different capacitances.

[0281] The blocking component can be located on the inner surface of the main body.

[0282] The blocking component can be located on the outer surface of the main body.

[0283] The blocking component can be embedded between the inner and outer surfaces of the main body.

[0284] According to another embodiment, a stylus includes: a main body; a conductive tip protruding from the inside of the main body to the outside; a resonant circuit located inside the main body, connected to the conductive tip, and causing an electrical signal transmitted from the conductive tip to resonate; and a conductive blocking member surrounding at least a portion of the main body, the blocking member including a slit that blocks the generation of eddy currents, the two ends of the blocking member being spaced apart along a first direction through the slit, the first direction being the direction in which eddy currents are generated.

[0285] The resonant circuit section may include: an inductor section connected between the conductive tip and the ground section; a capacitor section connected between the conductive tip and the ground section; and a conductive connecting member connecting the conductive tip and the inductor section.

[0286] According to another embodiment, the stylus includes: a main body; a conductive blocking member surrounding at least a portion of the main body; and a conductive tip protruding from the inside of the main body to the outside, the blocking member including at least one slit that blocks the generation of eddy currents.

[0287] The blocking component can be located on the inner surface of the main body.

[0288] The blocking component can be located on the outer surface of the main body.

[0289] The blocking component can be embedded between the inner and outer surfaces of the main body.

[0290] The blocking component may include multiple blocking portions printed on a sheet.

[0291] The blocking component may include multiple blocking portions plated on the main body.

[0292] To achieve the above or other objectives, a stylus according to one embodiment includes: a main body; a conductive tip exposed from the inside of the main body to the outside; a grounding portion capable of being electrically connected to a user; and a resonant circuit portion including at least one resonant circuit located within the main body and electrically connected between the conductive tip and the grounding portion, which resonates and outputs resonant signals of different frequencies to electromagnetic signals of different frequencies transmitted through the main body.

[0293] The resonant circuit section includes: a first resonant circuit for resonating with an electromagnetic signal at a first frequency; and a second resonant circuit for resonating with an electromagnetic signal at a second frequency. During the first interval, the first resonant circuit outputs a resonant signal through a conductive tip, and during the second interval, which is different from the first interval, the second resonant circuit outputs a resonant signal through a conductive tip.

[0294] The first and second resonant circuits can alternately output resonant signals.

[0295] The first resonant circuit includes: a first inductor connected between a conductive tip and a second resonant circuit; and a first capacitor connected between a conductive tip and the second resonant circuit. The second resonant circuit includes: a second inductor connected between a ground portion and the first resonant circuit; and a second capacitor connected between a ground portion and the first resonant circuit. The first inductor and the second inductor may have mutually separated ferrite cores.

[0296] The first resonant circuit is connected between the conductive tip and the second resonant circuit, and the second resonant circuit is connected between the first resonant circuit and the ground.

[0297] The resonant circuit section can respond to electromagnetic signals whose frequency changes over time and output resonant signals whose frequency changes over time.

[0298] A touch sensor according to one embodiment includes: a touch panel including first touch electrodes arranged along a first direction and second touch electrodes arranged along a second direction intersecting the first direction; and a control unit that, during a first interval within a touch report frame, samples a signal transmitted from at least one of the first touch electrodes and the second touch electrode according to a first sampling frequency related to a first driving frequency, and determines whether a noise signal is received; if a noise signal is determined to be received, then, during a second interval after the first interval, applies a second driving signal having a second driving frequency different from the first driving frequency to at least one of the first touch electrodes and the second touch electrode.

[0299] The control unit can sample the signal transmitted from at least one of the first touch electrode and the second touch electrode according to the second sampling frequency associated with the second drive signal during the third interval after the second interval to receive the sensing signal.

[0300] During the third interval, the signal transmitted from at least one of the first touch electrode and the second touch electrode may be a signal obtained by resonance due to the second drive signal.

[0301] During the first interval after the end of the third interval, the control unit can sample the signal transmitted from at least one of the first touch electrode and the second touch electrode according to the second sampling frequency related to the second driving frequency, and determine whether a noise signal is received.

[0302] If it is determined that no noise signal is received, the control unit applies a first drive signal having a first drive frequency to at least one of the first touch electrode and the second touch electrode during the second interval after the first interval.

[0303] The control unit can sample the signal transmitted from at least one of the first touch electrode and the second touch electrode according to the first sampling frequency during the third interval after the second interval to receive the sensing signal.

[0304] A touch sensor according to another embodiment includes: a touch panel including first touch electrodes arranged along a first direction and second touch electrodes arranged along a second direction intersecting the first direction; and a control unit that, during a touch reporting frame including a plurality of first intervals, during a first number of first intervals, applies a first driving signal having a first driving frequency to at least one of the first touch electrodes and the second touch electrodes, and samples the signal transmitted from at least one of the first touch electrodes and the second touch electrodes according to a first sampling frequency related to the first driving frequency to receive a first sensing signal; and during a second number of first intervals, applies a second driving signal having a second driving frequency different from the first driving frequency to at least one of the first touch electrodes and the second touch electrodes, and samples the signal transmitted from at least one of the first touch electrodes and the second touch electrodes according to a second sampling frequency related to the second driving frequency to receive a second sensing signal.

[0305] The control unit can use the first sensing signal and the second sensing signal to determine whether a noise signal is received. If a noise signal is received, the first number and the second number during the next touch report frame are changed.

[0306] The control unit increases the first number when the SNR (signal-noise ratio) of the first sensing signal is greater than the SNR of the second sensing signal, and increases the second number when the SNR of the second sensing signal is greater than the SNR of the first sensing signal.

[0307] The first and second numbers can be the same.

[0308] A touch system according to one embodiment includes: a stylus according to one embodiment; and a touch sensor according to at least one of the embodiments.

[0309] To achieve the above or other objectives, an electronic device according to one embodiment includes: a loop coil; a touch panel including a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction intersecting the first direction; a coil driving unit that applies a coil driving signal to the loop coil; a driving receiving unit that applies the driving signal to the plurality of first touch electrodes and the plurality of second touch electrodes and receives sensing signals from the plurality of first touch electrodes and the plurality of second touch electrodes; and a control unit that controls the coil driving unit to change the length of the interval in which the coil driving unit operates based on the sensing signals output from the receiving unit.

[0310] To achieve the above or other objectives, a foldable electronic device according to one embodiment includes a touch sensor and a loop coil located below the touch sensor, the loop coil including: a ferrite sheet located in a region other than the folded region forming a curved surface in the folded state, and an antenna loop located on the ferrite sheet.

[0311] To achieve the above or other objectives, an electronic device according to one embodiment includes: a plurality of antenna rings spaced apart from each other on a substrate, the plurality of antenna rings including: a first antenna ring connecting a first pad and a second pad on the substrate; and a second antenna ring connecting a third pad and a fourth pad; and a flexible circuit board electrically connected to the first to fourth pads, the flexible circuit board including: interconnect wiring connecting the second pad and the third pad to each other; and a coil driver applying a drive signal to the first pad and the second pad.

[0312] To achieve the above or other objectives, a stylus according to one embodiment includes: a sensor for sensing external input; a resonant circuit; and a controller for receiving power from the resonant circuit and controlling a resonant signal generated in the resonant circuit based on the sensor's sensing value.

[0313] To achieve the above or other objectives, an electronic device according to one embodiment includes: a touch sensor that sequentially transmits electromagnetic signals having two or more frequencies to a stylus and receives electrical signals corresponding to the electromagnetic signals from the stylus; and a touch controller that, based on changes in the electrical signals, determines at least one of the two or more frequencies as the frequency of the electromagnetic signals and activates the touch sensor.

[0314] The touch controller can determine the frequency of an electromagnetic signal from the magnitude and frequency of an electrical signal.

[0315] The touch controller can generate touch data based on electrical signals in one-frame units.

[0316] Touch sensors can sequentially apply electromagnetic signals with two or more frequencies within one frame.

[0317] Touch sensors can apply electromagnetic signals of different frequencies corresponding to multiple time intervals within a single frame during various time intervals.

[0318] Touch sensors can apply electromagnetic signals with more than two frequencies per frame.

[0319] The touch sensor sequentially applies electromagnetic signals having frequencies included in each of a plurality of first frequency intervals divided by a first frequency unit in a plurality of time intervals within a plurality of time intervals within a plurality of time intervals within a plurality of second frequency intervals divided by a second frequency unit, wherein the first frequency unit is larger than the second frequency unit.

[0320] The first frequency interval, which includes the largest frequency in the electrical signal received during the first frame, can be divided into second frequency units.

[0321] The touch sensor may include: a touch panel including a plurality of first touch electrodes for detecting touch coordinates in a first direction and a plurality of second touch electrodes for detecting touch coordinates in a second direction intersecting the first direction; and a drive receiver that applies drive signals corresponding to two or more frequencies to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes, such that electromagnetic signals having two or more frequencies are transmitted to a stylus and that electrical signals are received.

[0322] The touch sensor may include: a loop coil that generates a magnetic field; a touch panel that includes a plurality of first touch electrodes for detecting touch coordinates in a first direction and a plurality of second touch electrodes for detecting touch coordinates in a second direction that intersects the first direction; and a drive receiver that applies drive signals corresponding to two or more frequencies to the loop coil so as to transmit electromagnetic signals having two or more frequencies to the stylus and receive electrical signals.

[0323] It also includes a temperature sensor that senses the ambient temperature, and the touch sensor begins to transmit electromagnetic signals with two or more frequencies when the ambient temperature changes.

[0324] A control method for an electronic device according to one embodiment includes: a step of a touch sensor sequentially transmitting electromagnetic signals having two or more frequencies to a stylus; and a step of a touch controller determining at least one of the two or more frequencies as the frequency of the electromagnetic signal based on changes in the electrical signals, and activating the touch sensor.

[0325] Determining at least one of two or more frequencies as the frequency of an electromagnetic signal can include: the touch controller determining the frequency of the electromagnetic signal as the frequency of the electrical signal with the larger magnitude.

[0326] It may also include the step of the touch controller generating touch data based on electrical signals in units of 1 frame.

[0327] The step of sequentially transmitting electromagnetic signals with two or more frequencies to a stylus may include: the step of sequentially applying electromagnetic signals with two or more frequencies to a touch sensor within one frame.

[0328] The step of sequentially transmitting electromagnetic signals with two or more frequencies to a stylus may include: applying electromagnetic signals with two or more frequencies to the touch sensor in one-frame units.

[0329] The step of applying electromagnetic signals having two or more frequencies in a frame unit includes: the step of the touch sensor sequentially applying electromagnetic signals having frequencies included in each of a plurality of first frequency intervals divided by a first frequency unit in a plurality of time intervals within a first frame; and the step of the touch sensor sequentially applying electromagnetic signals having frequencies included in each of a plurality of second frequency intervals divided by a second frequency unit in a plurality of time intervals within a second frame following the first frame, wherein the first frequency unit is greater than the second frequency unit.

[0330] The first frequency interval, which includes the largest frequency among the electrical signals received during the first frame, is divided into second frequency units.

[0331] It also includes a step of sensing the ambient temperature. When a change in ambient temperature is sensed, the touch sensor can begin to transmit electromagnetic signals with more than two frequencies.

[0332] A system according to one embodiment includes: a stylus including a resonant circuit having a resonant frequency; and a touch sensor that increases the frequency of a drive signal in a manner that reaches an upper limit from a lower limit of a predetermined range of a reference frequency, or decreases the frequency of the drive signal in a manner that reaches a lower limit from an upper limit of the predetermined range to explore the resonant frequency, and transmits an electromagnetic signal having the resonant frequency to the stylus.

[0333] To achieve the above or other objectives, an antenna module according to one embodiment includes: a resonant circuit including a capacitor connected in parallel with a loop coil and the loop coil; a blocking capacitor connected in series with the resonant circuit; and a power supply for transmitting a drive signal of a predetermined frequency to the blocking capacitor.

[0334] An electronic device according to one embodiment includes: a coil driver that applies a drive signal of a predetermined frequency to a loop coil and to both ends of the loop coil, the coil driver applying drive signals of opposite phase to both ends of the loop coil.

[0335] To achieve the above or other objectives, an electronic device according to one embodiment includes: a loop coil; a coil driver that applies a drive signal of a predetermined frequency to the loop coil; a touch electrode; and a touch driver that receives a sensing signal from the touch electrode, wherein the touch driver receives the sensing signal in a region where no drive signal is applied.

[0336] To achieve the above or other objectives, an electronic device according to one embodiment includes: a touch sensor including touch electrodes; and a loop coil corresponding to the configuration of the touch electrodes, with different spacing between the windings.

[0337] To achieve the above or other objectives, a stylus according to one embodiment includes: a resonant circuit, an inductor coupled to the resonant circuit via mutual inductance, and an active module coupled to the inductor.

[0338] Invention Effects

[0339] Using an electronic device, stylus, and its driving and control method according to an embodiment of the present invention, by proposing an optimal construction of the resonant circuit for capacitive resonant touch, it has the advantage of being able to generate sufficient output signal even with a thin diameter.

[0340] In addition, it has the advantage of being able to detect the touch position of the stylus when the stylus is in contact with other conductive objects such as the human body.

[0341] In addition, it has the advantage of being able to increase the magnitude of the signal output from the stylus even if the resonant frequency of the stylus changes.

[0342] In addition, it has the advantage of improving the sensitivity of touch input reception.

[0343] In addition, it has the advantage of being able to calculate more accurate touch positions.

[0344] Furthermore, it has the advantage of improving stylus-based touch sensing performance in environments with noise levels similar to the resonant signal of the stylus.

[0345] In addition, it has the advantage of improving the SNR (signal to noise ratio) of touch devices.

[0346] Furthermore, by proposing an optimal structure for the resonant circuit of the stylus, it is possible to generate a sufficient output signal even with a thinner diameter.

[0347] In addition, it has the advantage of providing a robust stylus that is resistant to external factors.

[0348] In addition, it has the advantage of providing a stylus that can prevent unintentional touch input.

[0349] In addition, it has the advantage of providing a stylus that can improve the touch sensitivity of the touch sensor.

[0350] In addition, it has the advantage of improving the SNR (signal-noise ratio) of the signal output from the stylus.

[0351] In addition, it has the advantage of being able to perform palm rejection.

[0352] In addition, it has the advantage of reducing energy consumption in the range where a drive signal is output to the touch sensor for the resonance of the stylus, thereby reducing the energy consumption of the touch sensor.

[0353] In addition, it has the advantage of being able to provide thinner form factors.

[0354] In addition, it has the advantage of reducing the manufacturing cost of antenna modules and electronic devices that include them.

[0355] In addition, it has the advantage of being able to detect further input from users using a stylus.

[0356] In addition, it has the advantage of saving on the manufacturing cost of styluses.

[0357] In addition, it has the advantage of being able to increase the magnitude of the signal output from the stylus even if the resonant frequency of the stylus changes.

[0358] In addition, it has the advantage of reducing the power consumption of the antenna module and the electronic devices that include it.

[0359] In addition, it has the advantage of increasing the energy delivered to the stylus.

[0360] In addition, it has the advantage of being able to deliver the power required for stylus use even when the stylus is being used simultaneously, without prior separate wireless charging.

[0361] In addition, it has the advantage of being able to wirelessly charge the stylus while it is in use.

[0362] In addition, it has the advantage of being able to charge the stylus more quickly.

[0363] In addition, it has the advantage of reducing power consumption when charging the stylus.

[0364] In addition, it has the advantage of being able to detect further input from users using a stylus.

[0365] Furthermore, the further scope of application of this disclosure will become clear from the following detailed description. However, various changes and modifications will be readily apparent to those skilled in the art within the scope of this disclosure; therefore, it should be understood that the detailed description and specific embodiments of this disclosure, such as preferred embodiments, are given only as examples. Attached Figure Description

[0366] Figure 1 (a) and (b) are conceptual diagrams illustrating a stylus and an electronic device.

[0367] Figure 2 This is a block diagram that briefly illustrates an electronic device.

[0368] Figure 3 (a) is a top view that briefly shows a portion of the display unit according to one embodiment. Figure 3 (b) is along Figure 3 (a) is a cross-sectional view of line I-I'.

[0369] Figure 4 It is a block diagram of a component of an electronic device.

[0370] Figure 5 It is a brief illustration Figure 2 A block diagram of one mode of display unit 250.

[0371] Figure 6 It is shown Figure 5A graph of the pixels of the display section.

[0372] Figure 7 It shows the driver Figure 5 A timing diagram of an example of the drive signals for the display section.

[0373] Figure 8 It is a brief illustration Figure 2 Another block diagram of the display section.

[0374] Figure 9 It is shown Figure 8 A graph of the pixels of the display section.

[0375] Figure 10 This is a diagram that briefly illustrates a touch sensing unit according to one embodiment.

[0376] Figure 11 This is a simplified diagram illustrating a touch sensing unit 260 according to one embodiment.

[0377] Figure 12 This is a diagram illustrating an example of a stylus being touched by a touch sensing unit 260 according to one embodiment.

[0378] Figure 13 This diagram illustrates the application of drive signals to the stylus and the user's hand holding it.

[0379] Figure 14 This figure illustrates a case where a stylus is used to perform touch input on a touch sensing unit 260 according to one embodiment.

[0380] Figure 15 It is shown in Figure 14 A diagram illustrating the effect of the driving signal transmitted from the center to the hand.

[0381] Figure 16 This is a diagram illustrating the operation of applying a drive signal to a touch sensing unit 260 according to one embodiment.

[0382] Figure 17 This is a diagram illustrating another case of performing touch input on a touch sensing unit 260 according to one embodiment using a stylus.

[0383] Figure 18 It is shown in Figure 17 A diagram illustrating the effect of the driving signal transmitted from the center to the hand.

[0384] Figure 19 This is a diagram illustrating the operation of applying a drive signal to a touch sensing unit 260 according to one embodiment.

[0385] Figure 20 This is a diagram that briefly illustrates a touch sensing unit according to one embodiment.

[0386] Figure 21 This is a top view of a portion of a touch sensor 261 according to one embodiment.

[0387] Figure 22 It shows in detail Figure 21 A top view of a portion of it.

[0388] Figure 23 It is along Figure 22 A sectional view cut along the X-X' line.

[0389] Figure 24 This is a top view of a portion of a touch sensor 261 according to another embodiment.

[0390] Figure 25 It indicates that the stylus is near. Figure 20 A diagram of an example of a touch sensing unit.

[0391] Figure 26 This is a diagram that briefly illustrates a portion of a touch sensing unit according to one embodiment.

[0392] Figure 27 This is a diagram that briefly illustrates a portion of a touch sensing unit 260 according to one embodiment.

[0393] Figure 28 This is a diagram that briefly illustrates a portion of a touch sensing unit 260 according to one embodiment.

[0394] Figure 29 (a) and (b) are diagrams showing how a stylus 10 is driven according to one embodiment and a touchscreen 20 according to two embodiments.

[0395] Figure 30 This is a diagram illustrating a stylus according to several embodiments.

[0396] Figure 31 This is a diagram illustrating a portion of a stylus and electronic device according to one embodiment.

[0397] Figure 32 This is a flowchart illustrating the sensor input operation of a stylus and electronic device according to one embodiment.

[0398] Figure 33 It shows the basis Figure 32 A waveform diagram of an example of the driving signal and the resonant signal.

[0399] Figure 34 This is a flowchart illustrating the resonant frequency changing operation of a stylus and electronic device according to one embodiment.

[0400] Figure 35 It shows the basis Figure 34 A waveform diagram of an example of the driving signal and the resonant signal.

[0401] Figure 36 This is a diagram illustrating a portion of a stylus and electronic device according to one embodiment.

[0402] Figure 37 This is a flowchart illustrating sensor input operations of a stylus and electronic device according to another embodiment.

[0403] Figure 38 This is a flowchart illustrating the resonant frequency change operation of a stylus and electronic device according to another embodiment.

[0404] Figure 39 (a) is a diagram showing the state of the stylus approaching the electronic device. Figure 39 (b) is a simplified circuit diagram showing the stylus and electronic device.

[0405] Figure 40 (a) and (b) are diagrams showing the state of a stylus approaching an electronic device to send and receive signals.

[0406] Figure 41 This is an equivalent circuit diagram of an electronic device that shows a stylus and output drive signals.

[0407] Figure 42 This is an equivalent circuit diagram showing a stylus and an electronic device that receives sensing signals.

[0408] Figures 43 to 47 This is a diagram showing the state of a stylus approaching an electronic device.

[0409] Figures 48 to 53 This is a simplified circuit diagram showing a stylus and an electronic device.

[0410] Figures 54 to 59 This is another simplified circuit diagram illustrating a stylus and electronic device.

[0411] Figure 60 as well as Figure 61 This is a diagram showing the state of a stylus approaching an electronic device to send and receive signals.

[0412] Figure 62 as well as Figure 63 This is another simplified circuit diagram illustrating a stylus and electronic device.

[0413] Figure 64 This is a diagram illustrating an antenna module and a stylus according to one embodiment.

[0414] Figure 65This is a diagram showing the drive signal applied by the coil driver to the loop coil and the resonant signal of the stylus.

[0415] Figure 66 This is a diagram illustrating the driving signal applied to the loop coil by the coil driver according to one embodiment and the resonant signal of the stylus.

[0416] Figure 67 It is shown in detail Figure 66 A diagram of a coil driver.

[0417] Figure 68 as well as Figure 69 This is a simplified circuit diagram showing a stylus and an electronic device.

[0418] Figure 70 as well as Figure 71 To show more specifically Figure 69 The circuit diagram of the stylus.

[0419] Figure 72 This is a simplified circuit diagram illustrating a stylus and electronic device according to one embodiment.

[0420] Figure 73 as well as Figure 74 To show more specifically Figure 72 The circuit diagram of the stylus.

[0421] Figures 75 to 77 This is a diagram illustrating a portion of a stylus and electronic device according to one embodiment.

[0422] Figure 78 This is a diagram illustrating the use of a stylus in an electronic device according to one embodiment.

[0423] Figure 79 This is a diagram showing an example of an antenna pattern implemented on one side of a substrate.

[0424] Figure 80 as well as Figure 81 This is a diagram illustrating an antenna module according to one embodiment and a portion of an electronic device including the same.

[0425] Figure 82 as well as Figure 83 This is a diagram illustrating an antenna module according to one embodiment and a portion of an electronic device including the same.

[0426] Figure 84 as well as Figure 85 This is a diagram illustrating an antenna module according to one embodiment and a portion of an electronic device including the same.

[0427] Figures 86 to 88This is a diagram illustrating an antenna module according to one embodiment and a portion of an electronic device including the same.

[0428] Figure 89 as well as Figure 90 This is a diagram illustrating an antenna module according to one embodiment and a portion of an electronic device including the same.

[0429] Figure 91 as well as Figure 92 This diagram illustrates the use of a conventional stylus in a foldable electronic device.

[0430] Figure 93 as well as Figure 94 This is a diagram illustrating a foldable electronic device according to one embodiment.

[0431] Figures 95 to 100 This is a diagram showing the configuration of a touch panel and a loop coil according to several forms of another embodiment.

[0432] Figure 101 This is a diagram illustrating the drive signal of the loop coil and the resonant signal of the stylus according to one embodiment.

[0433] Figure 102 as well as Figure 103 This is a diagram illustrating a foldable electronic device according to another embodiment.

[0434] Figures 104 to 107 This is a diagram showing the configuration of a touch panel and a loop coil according to several forms of another embodiment.

[0435] Figure 108 This is a diagram illustrating the situation where a stylus is brought near several locations of a foldable electronic device according to one embodiment.

[0436] Figure 109 This is a diagram showing the drive signal of the loop coil and the resonant signal of the stylus depending on the position of the stylus.

[0437] Figures 110 to 112 It is a brief illustration Figure 109 A diagram of the magnetic field generated when a driving signal is applied.

[0438] Figure 113 This is a flowchart illustrating a touch detection method according to one embodiment.

[0439] Figure 114 yes Figure 113 A variation of the touch detection method.

[0440] Figure 115 It shows the basis Figure 113 and Figure 114A waveform diagram of an example of the driving signal for a touch detection method.

[0441] Figure 116 It shows the basis Figure 113 as well as Figure 114 A waveform diagram of an example of the driving signal and the received signal of a touch detection method.

[0442] Figure 117 Showing the Figure 116 This is an example of processing the sensing signal in the first interval T1.

[0443] Figure 118 It shows the basis Figure 113 as well as Figure 114 The waveform diagram of another example of the driving signal and the received signal of the touch detection method.

[0444] Figure 119 Showing the Figure 118 This is an example of processing the sensing signal in the second interval T2.

[0445] Figure 120 It is shown Figure 116 as well as Figure 118 A graph showing the magnitude of the received signal.

[0446] Figure 121 as well as Figure 122 It is a diagram showing the touch area of ​​different objects.

[0447] Figure 123 This illustrates a situation where the touch of the stylus 10 cannot be sensed depending on the distance between the stylus 10 and the touch location of different touch objects 30.

[0448] Figure 124 This illustrates the situation where the touch of the stylus 10 cannot be sensed depending on the touch area of ​​the different touch objects 30.

[0449] Figure 125 It is shown in Figure 114 A flowchart of an embodiment of determining a valid touch signal in step S14 of a touch detection method.

[0450] Figure 126 It is shown in Figure 114 A flowchart of another embodiment of determining a valid touch signal in step S14 of the touch detection method.

[0451] Figure 127 This is a flowchart illustrating a driving method for an electronic device according to one embodiment.

[0452] Figure 128 This shows the relationship between the horizontal synchronization signal Hsync and... Figure 127A timing diagram of an example of the driving signals for the driving method.

[0453] Figure 129 This shows the relationship between the horizontal synchronization signal Hsync and... Figure 127 A timing diagram of an example of the driving signals for the driving method.

[0454] Figures 130 to 133 This illustrates a touch device according to one embodiment. Figure 127 The driving method, and Figure 5 The display unit 250 is synchronized with the horizontal synchronization signal to receive the timing diagram of the time point of the sensing signal.

[0455] Figure 134 as well as Figure 135 This is a timing diagram used to illustrate the driving operation of pixel PX_ab and the operation of the touch device receiving sensing signals.

[0456] Figure 136 This is a diagram that briefly illustrates the driving timing of a touch sensor according to one embodiment.

[0457] Figures 137a to 140b This is a diagram illustrating the driving timing of a touch sensor according to an embodiment.

[0458] Figure 141 This is a graph used to illustrate the effect of noise on the touch sensing performance of electronic devices.

[0459] Figure 142 This is a flowchart illustrating a touch detection method during operation of the touch sensing unit in a second touch driving mode according to an embodiment.

[0460] Figure 143 It is used to explain in Figure 142 A diagram showing the noise filtering method in touch detection.

[0461] Figures 144 to 147 This is a waveform diagram of an example of a first drive signal and a second drive signal with different phases output by the touch sensing unit.

[0462] Figure 148 This is a flowchart illustrating a control method for a touch sensing unit according to an embodiment.

[0463] Figure 149 This diagram illustrates an example of applying a drive signal according to a control method for the touch sensing unit.

[0464] Figure 150 This is a waveform diagram showing the first example of a drive signal according to the control method of a touch device.

[0465] Figures 151 to 153 It shows the application Figure 150A diagram showing an example of a driving signal.

[0466] Figure 154 This is a waveform diagram showing the second example of the drive signal according to the control method of the touch sensing unit.

[0467] Figures 155 to 157 It shows the application Figure 154 A diagram showing an example of a driving signal.

[0468] Figure 158 This is a waveform diagram showing the third example of the drive signal according to the control method of the touch device.

[0469] Figures 159 to 162 It shows the application Figure 158 A diagram showing an example of a driving signal.

[0470] Figure 163 This is a flowchart illustrating a driving method for an electronic device according to one embodiment.

[0471] Figure 164 It shows the basis Figure 163 A waveform diagram of an example of the driving signal for the driving method.

[0472] Figure 165 This is a flowchart illustrating a driving method for an electronic device according to another embodiment.

[0473] Figure 166 as well as Figure 167 It shows the basis Figure 165 A waveform diagram of an example of the driving signal for the driving method.

[0474] Figure 168 This is a flowchart illustrating a control method for an electronic device according to one embodiment.

[0475] Figure 169 This is a diagram illustrating the configuration of a touch sensor and a loop coil in an electronic device according to one embodiment.

[0476] Figure 170 This is a diagram showing the driving signal applied to the loop coil by a coil driver according to one method and the resonant signal of the stylus.

[0477] Figure 171 as well as Figure 172 This is a diagram illustrating the driving signal applied to the loop coil by a coil driver according to another method and the resonant signal of the stylus.

[0478] Figures 173 to 176 This is a waveform diagram of the drive signal shown according to various forms of one implementation.

[0479] Figure 177This is a more detailed diagram of the touch sensing unit 260 operating in the first interval T1.

[0480] Figure 178 It is shown in more detail Figure 177 A diagram showing the operation of the first drive / receiver unit 2620 and the second drive / receiver unit 2622 in the first interval T1.

[0481] Figure 179 This is a diagram showing the touch device 10 operating in the second sub-interval T22 of the second interval T2.

[0482] Figure 180 This is a conceptual diagram that briefly illustrates the stylus and touch sensor.

[0483] Figure 181 It is a detailed diagram showing the stylus and electronic device.

[0484] Figure 182 This is a conceptual diagram showing the inductor section of the stylus.

[0485] Figure 183 It is a graph used to illustrate the inductance L and Q values ​​in the design of the inductor section.

[0486] Figure 184 as well as Figure 185 It is a diagram used to illustrate the types of lines according to one embodiment.

[0487] Figure 186 (a) and (b) are diagrams used to illustrate two types of multi-layer winding methods.

[0488] Figure 187 This is a graph showing the Q values ​​of inductor 1 and inductor 2 measured by Keysight Technologies' E4980A precision LCR meter while varying the frequency.

[0489] Figure 188 This is a graph showing the Q values ​​of inductors 3 to 5 measured by a Keysight Technologies E4980A precision LCR meter while varying the frequency.

[0490] Figure 189 This is a graph showing the Q values ​​of inductors 6 and 7 measured by a Keysight Technologies E4980A precision LCR meter while varying the frequency.

[0491] Figure 190 This is a diagram used to illustrate an inductor section according to one embodiment.

[0492] Figure 191 This is a graph showing the maximum amplitude of the resonant signal when the inductor section 14 only includes the ferrite core 15 and the coil 16.

[0493] Figure 192 It is a graph showing the maximum amplitude of the resonant signal when the inductor section 14 includes the ferrite core 15, the winding tube 141 and the coil 16.

[0494] Figure 193 The equivalent circuit is shown with two thin-diameter inductors connected in series and a capacitor connected in parallel between the two ends of the inductors.

[0495] Figure 194 This is a diagram showing the equivalent circuit of a method that combines two resonant signals and outputs them by connecting two LC resonant circuits in series (hereinafter referred to as "LCLC resonant circuit").

[0496] Figure 195 This is a diagram illustrating touch input caused by the hovering of a stylus.

[0497] Figure 196 This is a concept diagram showing a stylus and electronic device when held in a stylus position.

[0498] Figure 197 This is a simplified circuit diagram showing the stylus and electronic device when held in a stylus position.

[0499] Figure 198 as well as Figure 199 This is a simplified circuit diagram showing the stylus and electronic device when held in a stylus position.

[0500] Figure 200 This is a conceptual diagram illustrating a stylus with an LLC structure.

[0501] Figure 201 This is a concept diagram showing a stylus.

[0502] Figure 202 It is shown in Figure 201 The diagram shows an example of eddy currents generated in a stylus.

[0503] Figures 203 to 211 This is a conceptual diagram showing the structure of a stylus according to an embodiment.

[0504] Figure 212 as well as Figure 213 This is a conceptual diagram showing the structure of the blocking member of the stylus according to an embodiment.

[0505] Figure 214This is a diagram illustrating touch input caused by hovering a stylus according to an embodiment.

[0506] Figures 215 to 217 This is a diagram showing the structure of the main body of the stylus according to an embodiment.

[0507] Figure 218 This is a conceptual diagram illustrating a stylus according to one embodiment.

[0508] Figure 219 This is a conceptual diagram of a stylus that includes a resonant circuit that resonates with drive signals of different frequencies.

[0509] Figure 220 This is a flowchart illustrating a control method for an electronic device according to one embodiment.

[0510] Figure 221 It shows the basis Figure 220 A waveform diagram of an example of the drive signal and resonant signal of the control method of an electronic device.

[0511] Figure 222 This is a flowchart illustrating a control method for an electronic device 2 according to another embodiment.

[0512] Figure 223 It shows the basis Figure 222 The waveform diagram of the drive signal of the control method of the electronic device.

[0513] Figure 224 (a) and (b) are diagrams showing the configuration of the touch sensor and the loop coil.

[0514] Figure 225 as well as Figure 226 This is a diagram showing the configuration of the touch sensor and the loop coil.

[0515] Figure 227 To show in more detail Figure 225 A diagram showing the configuration of the touch sensor and the loop coil.

[0516] Figures 228 to 233 This is a diagram illustrating the configuration of a touch sensor and a loop coil according to one embodiment.

[0517] Figure 234 This is a graph comparing the touch signal and noise signal of one implementation and a comparative example.

[0518] Figures 235 to 238 This is a diagram illustrating the configuration of a touch sensor and a loop coil according to several embodiments.

[0519] Figure 239This is a block diagram illustrating a touch sensor and a host according to the present disclosure.

[0520] Figure 240 This is a diagram illustrating an example of touch data provided from a touch sensor to a host computer. Attached Figure Description

[0522] Explanation of reference numerals in the attached figures

[0523] 250: Display Section

[0524] 251: Display panel

[0525] 252: Display Controller

[0526] 260: Touch Sensing Unit

[0527] 261: Touch sensor

[0528] 262: Touch controller

[0529] 263: Coil Driver

[0530] 264: Toroidal Coil Detailed Implementation

[0531] Hereinafter, various embodiments described herein will be illustrated with reference to the accompanying drawings. However, it should be understood that this is not intended to limit the embodiments representing the technology described herein, but rather includes various modifications, equivalents, and / or alternatives to the embodiments described herein. Regarding the description of the drawings, similar reference numerals may be used for similar constituent elements.

[0532] Furthermore, the sizes and thicknesses of the components shown in the accompanying drawings are arbitrarily illustrated for ease of explanation, and therefore the present invention is not necessarily limited to the illustrated cases. In the drawings, the thicknesses of each layer and region are shown enlarged for clarity. Additionally, for ease of explanation, the thicknesses of some layers and regions are shown enlarged in the drawings.

[0533] Furthermore, when describing a layer, membrane, region, plate, or other part as being "above" or "on" other parts, this includes not only the case where it is "directly" "on" other parts, but also the case where other parts exist in between. Conversely, when describing a part as being "directly" "on" other parts, it means that there are no other parts in between. Additionally, describing something as being "above" or "on" the reference part means being located above or below the reference part, not necessarily "above" or "on" in the opposite direction of gravity.

[0534] In this document, expressions such as "have", "may have", "include", or "may include" refer to the existence of the feature (e.g., numerical value, function, operation, or component), without excluding the existence of additional features.

[0535] In this document, expressions such as “A or B”, “at least one of A and / or B”, or “one or more of A and / or B” can include all possible combinations of the items listed together. For example, “A or B”, “at least one of A and B”, or “at least one of A or B” can refer to any of the following: (1) including at least one A; (2) including at least one B; or (3) including at least one A and at least one B.

[0536] The terms "first," "second," "first," or "second," as used herein, may modify various constituent elements regardless of order and / or importance, serving only to distinguish one constituent element from others without limiting that element. For example, "first user equipment" and "second user equipment" may refer to different user equipment regardless of order or importance. For instance, without departing from the scope of the claims described herein, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be renamed a first constituent element.

[0537] When referring to a constituent element (e.g., constituent element 1) as "(functionally or communicatively) coupled with / to" or "connected to" other constituent requirements (e.g., constituent element 2), it should be understood that the constituent element is directly connected to the other constituent elements, or connected through other constituent elements (e.g., constituent element 3). Conversely, when referring to a constituent element (e.g., constituent element 1) as "directly connected" or "directly connected" to other constituent elements (e.g., constituent element 2), it can be understood that there are no other constituent elements (e.g., constituent element 3) between the constituent element and the other constituent elements.

[0538] The phrase "configured to" as used herein may be used interchangeably with "suitable for," "having the capacity to," "designed to," "adapted to," "made to," or "capable of." The term "configured to" does not necessarily refer only to hardware "specifically designed to." Instead, in some cases, the phrase "device configured to" can refer to a device that, together with other devices or components, is "capable of." For example, the statement "a processor configured to execute A, B, and C" can refer to a dedicated processor (e.g., an embedded processor) used to perform these operations, or a generic-purpose processor (e.g., a CPU or application processor) capable of performing the corresponding operations by running one or more software programs stored in a storage device.

[0539] The terminology used herein is for illustrative purposes only and is not intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless clearly indicated otherwise in the context. Technical or scientific terms are included, and the terms used herein may have the same meaning as commonly understood by one of ordinary skill in the art described herein. Terms used herein that are defined in a general dictionary may be interpreted as having the same or similar meaning as they have in the context of the relevant art, and should not be construed as having an unusual or overly formal meaning unless explicitly defined herein. Depending on the circumstances, even terms defined herein should not be construed as excluding the embodiments described herein.

[0540] Electronic devices according to various embodiments of this document may include, for example, at least one of smartphones, tablet PCs, mobile phones, video phones, e-book readers, laptop PCs, netbook computers, mobile medical devices, cameras, or wearable devices. According to various embodiments, wearable devices may include at least one of the following: jewelry (e.g., watches, rings, bracelets, anklets, necklaces, glasses, contact lenses, or head-mounted devices (HMDs)), integrated fabric or clothing (e.g., electronic clothing), body-attached (e.g., skin pads or tattoos), or implantable circuits (e.g., implantable circuits).

[0541] Hereinafter, the electronic device, stylus, and driving method thereof according to the embodiments will be described with reference to the accompanying drawings.

[0542] In the case of an active stylus, the amplitude of the resonant signal in the stylus's built-in resonant circuit must be relatively large in order to efficiently transfer power to the battery via wireless charging. Conversely, in the case of a passive stylus, the amplitude of the resonant signal in the stylus's built-in resonant circuit must be relatively large in order to ensure that the touch sensor accurately recognizes the stylus's touch. Therefore, it is crucial to transmit a signal with the same frequency as the resonant frequency of the stylus's resonant circuit to the stylus in order to generate the maximum resonant signal.

[0543] Figure 1 (a) and (b) are conceptual diagrams illustrating a stylus and an electronic device. Figure 2 This is a block diagram that briefly illustrates an electronic device.

[0544] like Figure 1 As shown in (a) and (b), the styluses 10 and 10' are able to receive signals output from the electronic devices 2 and 2' or the touch screens 20 and 20' near the touch screens 20 and 20' of the electronic devices 2 and 2', and send signals to the touch screens 20 and 20'.

[0545] Electronic devices 2 and 2' may include at least one of portable communication devices (e.g., smartphones, tablet PCs), computer devices, portable multimedia devices, portable medical devices, wearable devices, or home appliances. Furthermore, electronic device 2 may be a flexible device or a flexible display device. Additionally, electronic device 2 may also be a touch device capable of touch input.

[0546] exist Figure 1 In the rectangular foldable electronic device 2' or components such as the touch screen 20' shown in (b), the long side on the left side of the plane is called the first long side LS1, the long side on the right side is called the second long side LS2, the short side on the upper side is called the first short side SS1, and the short side on the lower side is called the second short side SS2.

[0547] The foldable electronic device 2' can be bent along a predetermined folding direction with reference to the folding axis AXIS_F that runs through the first short side SS1 and the second short side SS2. That is, the foldable electronic device 2' can switch between a folded state and an unfolded state with reference to the folding axis AXIS_F along the folding direction.

[0548] like Figure 2 As shown, Figure 1 The electronic devices 2 and 2' illustrated in (a) and (b) may include a wireless communication unit 210, a memory 220, an interface unit 230, a power supply unit 240, a display unit 250, a touch sensing unit 260, and a control unit 270, etc. Figure 2 The constituent elements illustrated are not necessarily those required to realize the electronic device; therefore, the electronic device described in this disclosure may have more or fewer constituent elements than those listed above. Hereinafter, for ease of explanation, [the following is a simplified explanation]. Figure 1 The following explanation will be based on electronic device 2 (a). Therefore, it should be noted that... Figure 1 The electronic device 2' of (b) can also apply the content described below.

[0549] More specifically, the wireless communication unit 210 in the aforementioned components may include one or more modules enabling wireless communication between the electronic device 2 and a wireless communication system, between the electronic device 2 and other electronic devices 2, or between the electronic device 2 and an external server. Furthermore, the wireless communication unit 210 may include one or more modules connecting the electronic device 2 to one or more networks. Such a wireless communication unit 210 may include a wireless internet module 211 and a short-range communication module 212, etc.

[0550] Wireless Internet module 211 refers to a module for wireless Internet connection, which can be built into electronic device 2. Wireless Internet module 211 can be configured to transmit and receive wireless signals in a communication network based on wireless Internet technology. As wireless Internet technologies, such as WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World Interoperability for Microwave Access), HSDPA (High Speed ​​Downlink Packet Access), HSUPA (High Speed ​​Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc., the wireless Internet module 211 transmits and receives data based on at least one wireless Internet technology, including Internet technologies not listed above.

[0551] The short-range communication module 212 is used for short-range communication and can support short-range communication using at least one of the following technologies: Bluetooth™, RFID (Radio Frequency Identification), Infrared DATA Association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless Fidelity), Wi-Fi Direct, and Wireless Universal Serial Bus. This short-range communication module 212 can support wireless communication between the electronic device 2 and a wireless communication system, between the electronic device 2 and a device capable of wireless communication, or between the touch sensor 2 and the network where an external server is located, through a wireless area network. The wireless area network can be a wireless personal area network.

[0552] The wireless communication device can be a mobile terminal (such as a smartphone, tablet PC, or notebook computer) capable of exchanging data with (or being linked to) the electronic device 2 according to the present invention. The proximity communication module 212 can sense (or identify) wireless communication devices around the electronic device 2 that can communicate with it. Furthermore, if the sensed wireless communication device is authenticated as communicating with the electronic device 2 according to one embodiment, the control unit 270 can transmit at least a portion of the data processed in the electronic device 2 to the wireless communication device via the proximity communication module 212. Therefore, a user of the wireless communication device can utilize the data processed in the electronic device 2 through the wireless communication device.

[0553] In addition, memory 220 stores data that supports various functions of electronic device 2. Memory 220 can store multiple application programs (or applications) that drive electronic device 2, data used for the operation of electronic device 2, and instructions.

[0554] The interface section 230 acts as a channel for connecting to various external devices of the electronic device 2. Such an interface section 230 may include at least one of the following: a wired / wireless headphone port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting to a device with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, and a headphone port.

[0555] The power supply unit 240, under the control of the control unit 270, receives external and internal power supplies and supplies power to the various components included in the electronic device 2. This power supply unit 240 includes a battery, which may be a built-in battery or a replaceable battery.

[0556] Display unit 250 displays (outputs) information processed in electronic device 2. For example, display unit 250 can display execution screen information of an application driven in electronic device 2 or UI (User Interface) or GUI (Graphical User Interface) information based on such execution screen information.

[0557] The display unit 250 may include an LCD (liquid crystal display), an OLED (organic light-emitting diode) display, an e-ink display, a quantum dot display, a micro LED (light-emitting diode) display, etc.

[0558] The display unit 250 includes a display panel 251 for displaying images and a display controller 252. The display controller 252 is connected to the display panel 251 and provides signals for displaying images to the display panel 251.

[0559] For example, the display panel 251 may be configured with multiple pixels connected to signal lines such as multiple scan lines and multiple data lines, and a scan drive unit that provides scan signals to the scan lines.

[0560] The display controller 252 may include a data driver IC that generates data signals applied to the data lines and a timing controller, a power management IC, etc., that processes image signals to control the overall operation of the display unit 250.

[0561] The touch sensing unit 260 can sense touch (or touch input) applied to the touch area using a capacitive method. As an example, the touch sensing unit 260 can be configured to convert changes in capacitance, voltage, or current generated at a specific location into an electronic input signal. The touch sensing unit 260 can be configured to detect the position, area, capacitance, etc., of a touch object applying a touch to the touch area on the touch sensing unit 260. Here, the touch object is the object that applies the touch to the touch sensor, such as a user's body part (fingers, palm, etc.), or a passive or active stylus 10.

[0562] The touch sensing unit 260 includes: a touch sensor 261 configured with touch electrodes; and a touch controller 262, which applies a drive signal to the touch sensor 261, receives a sensing signal from the touch sensor 261, and transmits touch data to the control unit 270 and / or the display controller 252.

[0563] exist Figure 2 In this document, the configuration designated as touch sensing unit 260 is named in the context of its operation in conjunction with other "units" such as a "display unit". In the following description, "unit" can be used in the context of its operation in relation to other components, "module" can be used in the context of modular production of this configuration, "device" can be used in the context of implementing this configuration as an "article", "sensor" can be used in the context of its physical operation, and "panel" can be used in the context of production engineering. These names—"unit", "module", "device", "sensor", "panel"—can be used in their respective contexts to facilitate understanding of the invention by those skilled in the art, and these differences in terminology do not limit the scope of the invention.

[0564] The touch controller 262 can output touch coordinate information in correspondence with the touch input sensed by the touch sensor 261. Furthermore, the touch controller 262 can change the frequency of the drive signal in correspondence with the touch sensing results.

[0565] In one embodiment, the touch controller 262 may include: a driving unit that is connected to at least one of a plurality of first touch electrodes and a plurality of second touch electrodes to apply a driving signal; a receiving unit that is connected to at least one of the plurality of first touch electrodes and a plurality of second touch electrodes to receive a sensing signal; and an MCU (micro control unit) that controls the operation of the driving unit and the receiving unit and uses the sensing signal output from the receiving unit to obtain the touch position.

[0566] In another embodiment, the touch controller 262 may include: a first drive / receiver unit connected to a plurality of first touch electrodes, which applies a drive signal and receives a sensing signal; a second drive / receiver unit connected to a plurality of second touch electrodes, which applies a drive signal and receives a sensing signal; and an MCU that controls the operation of the drive / receiver unit and uses the sensing signal output from it to obtain the touch position.

[0567] The display panel 251 and the touch sensor 261 form a layered structure or are integrated into one unit, which can be referred to as a touch screen 20.

[0568] The touch sensing unit 260 may further include a loop coil 264 and a coil driver 263 that applies a drive signal to the loop coil 264. The loop coil 264 may be configured near the touch screen 20, or it may be configured at any location within the electronic device 2. The loop coil 264 may also be composed of an antenna from a short-range communication module 212 such as RFID or NFC. The drive signal may include an AC voltage or AC current with a predetermined frequency.

[0569] The toroidal coil 264 can receive a drive signal applied from the coil driver 263 and transmit power to the outside. Therefore, the toroidal coil 264 can also be named a transmission electrode section. Furthermore, the coil driver 263 can also be named a transmission driver.

[0570] Refer again Figures 1 to 2 The control unit 270 can also control the driving of the electronic device 2 and output touch coordinate information in accordance with the touch sensing results of the electronic device 2. In addition, the control unit 270 can also change the frequency of the driving signal in accordance with the touch sensing results.

[0571] In addition to operations related to the aforementioned application, the control unit 270 typically controls the overall operation of the electronic device 2. The control unit 270 can process input or output signals, data, information, etc., through the components described above, or drive the application programs stored in the memory 270, thereby providing or processing appropriate information or functions to the user.

[0572] Furthermore, the control unit 270 can control the combination Figure 2 At least a portion of the aforementioned components are used to drive the application stored in the memory 220. Furthermore, the control unit 270 can cause at least two or more of the components included in the electronic device 2 to work in combination in order to drive the application.

[0573] Figure 3 (a) is a top view that briefly shows a portion of the display unit according to one embodiment. Figure 3 (b) is along Figure 3(a) is a cross-sectional view of line I-I'.

[0574] Reference Figure 3 In (a) and (b), display panel 251 can display any visual information on its front surface, such as text, video, photographs, two-dimensional or three-dimensional images, etc. Display panel 251 is used to display images, and there is no particular limitation on the type of images.

[0575] In one embodiment, the display panel 251 is described as an example of a panel having an organic light-emitting diode as a light-emitting element. However, the type of display panel 251 is not limited to this, and other display panels may be used within the limits of the concept of the present invention.

[0576] The display panel 251 can have various shapes. As an example, the display panel 251 can be a rectangle with two pairs of parallel sides. For ease of illustration, the display panel 251 is illustrated as a rectangle with a pair of long sides and one short side.

[0577] However, the shape of the display panel 251 is not limited to this, and the display panel 251 can have various shapes. For example, the display panel 251 can have various shapes such as a polygon with a closed shape including straight sides, a circle or ellipse including curved sides, a semicircle or semi-ellipse including sides composed of straight lines and curves. At least a portion of the corners of the display panel 251 can have a curved shape.

[0578] The entirety or at least a portion of the display panel 251 may be flexible.

[0579] Display panel 251 is capable of displaying images. Display panel 251 includes a display unit 204, which may include a display area DA for displaying images and a non-display area NDA located on at least one side of the display area DA. For example, the non-display area NDA may be configured to surround the display area DA. It is possible to arrange multiple pixels PX in the display area DA and to arrange a driving unit for driving the multiple pixels PX in the non-display area NDA (see reference). Figure 4 (253).

[0580] The display area DA can have a shape corresponding to the shape of the display panel 251. For example, the display area DA can have various shapes, such as a polygon with closed shape including straight sides, a circle with curved sides, an ellipse, a semicircle with sides composed of straight lines and curves, or a semi-ellipse, just like the shape of the display panel 251. In one embodiment of the present invention, it is assumed that the display area DA is rectangular.

[0581] The display panel 251 may include a substrate 202 and a display portion 204 disposed on the substrate 202.

[0582] The substrate 202 can be made of various materials, such as glass or polymeric metals. In particular, the substrate 202 can be an insulating substrate made of polymeric organic materials. Examples of insulating substrate materials including polymeric organic materials include polystyrene, polyvinyl alcohol, polymethylmethacrylate, polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, triacetate cellulose, and cellulose acetate propionate. However, the materials constituting the substrate 202 are not limited to these; for example, the substrate 202 can be made of fiber glass reinforced plastic (FRP).

[0583] The display unit 204 may be located on the substrate 202. The display unit 204 is capable of displaying user-inputted information or information provided to the user using images. The display unit 204 may include multiple pixels PX. The multiple pixels PX may be organic light-emitting elements including an organic layer, but are not limited thereto, and may be implemented in various forms such as liquid crystal elements, electrophoretic elements, and electrowetting elements. Each pixel PX, as the smallest unit for displaying an image, may include an organic light-emitting element that emits white light and / or colored light. Each pixel PX may emit light of any color among red, green, blue, and white, but is not limited thereto, and may also emit light of colors such as cyan, magenta, and yellow. Each pixel PX may include a transistor (not shown) connected to multiple signal wirings (not shown) and an organic light-emitting diode electrically connected to the transistor.

[0584] The display driver unit 210 includes a scan driver unit and a data driver unit that provide signals to the pixels PX included in the display panel 251.

[0585] The signal control unit 275 can provide drive control signals and image data to the display driver unit 210 to control the image display operation of the display panel 251. Specifically, the signal control unit 275 can generate drive control signals and image data using image signals and data enable signals provided from an external image source. For example, the signal control unit 275 can receive image signals and control signals provided from an external image source (not shown). The control signals may include a vertical synchronization signal as a signal that distinguishes frame intervals, a horizontal synchronization signal as a line-distinguishing signal within a frame, a data enable signal that is high only within the output data interval, and a clock signal. In addition, the drive control signals may include scan drive control signals, data drive control signals, etc.

[0586] The scan driving unit generates a scan signal based on the scan driving control signal provided by the signal control unit 275, and outputs the scan signal to the scan line connected to the pixel PX. The data driving unit generates a color level voltage corresponding to the image data provided by the signal control unit 275 based on the data driving control signal received from the signal control unit 275. The data driving unit outputs the color level voltage as a data voltage to the data line connected to the pixel PX. On the other hand, the scan driving unit can be formed simultaneously with the pixel PX through a thin-film process. For example, the scan driving unit can be mounted in the non-display area NDA in the form of an ASG (Amorphous Silicon TFT Gate driver circuit) or an OSG (Oxide Semiconductor TFT Gate driver circuit).

[0587] The touch sensor 261 can be attached to the display unit 204 as an additional panel or film, or it can be integrated with the display unit 204.

[0588] Touch sensor 261 may include multiple touch sensing units TS for sensing the location of a touch when a user touches the device. The touch sensing units TS may sense the touch using either mutual capacitance or self-capacitance. Touch sensor 261 receives data from a touch controller. Figure 3 (102) Accepts the application of a drive signal. The touch controller 262 can receive sensing signals that change with the user's touch from the touch sensor 261.

[0589] The window 103 may be located above the touch sensor 261. The window 103 may have a shape corresponding to the shape of the display panel 251 and may cover at least a portion of the front of the display panel 251. For example, if the display panel 251 is rectangular, the window 103 may also be a corresponding rectangle. Alternatively, if the display panel 251 is circular, the window 103 may also be a corresponding circle.

[0590] The image displayed on the display panel 251 is transmitted to the outside through the window 103. The window 103 can buffer external impacts to prevent the display panel 251 from being damaged or malfunctioning due to external impacts. The so-called external impact is a force from the outside that can be expressed by pressure, stress, etc., and can represent the force that causes defects to the display panel 251.

[0591] The window 103 as a whole or at least a part thereof may be flexible.

[0592] Figure 4 This is a block diagram showing a component of an electronic device. (See reference...) Figure 4 The display panel 251 is connected to the display driver unit 210, and the touch sensor 261 is connected to the touch controller 262.

[0593] The touch controller 262 can generate a drive signal output to the touch sensor 261 and can receive a sensing signal input from the touch sensor 261. Furthermore, the touch controller 262 can use the drive signal and the sensing signal to determine whether there is touch input to the touchscreen, the number of touch inputs, and the location of the touch inputs. The touch controller 262 can receive horizontal synchronization signals, scan drive control signals, and data drive control signals from the signal control unit 275. The touch controller 262 can adjust the frequency of the drive signal provided to the touch sensor 261 based on the horizontal synchronization signal. For example, the touch controller 262 can set the frequency of the drive signal to an integer multiple of 2 or more of the frequency of the horizontal synchronization signal.

[0594] Furthermore, the touch controller 262 may receive sensing signals from the touch sensor 261 during a period when the scan signal has a disabled level, based on at least one of a horizontal synchronization signal and a scan drive control signal.

[0595] Furthermore, the touch controller 262 may receive sensing signals from the touch sensor 261 during periods other than when data signals are applied to the data lines of the display panel 251, based on at least one of a horizontal synchronization signal and a data drive control signal.

[0596] exist Figure 4In the illustrated embodiment, the touch sensor 261 and the display panel 251 are shown separately, but the invention is not limited thereto. For example, the touch sensor 261 and the display panel 251 may also be manufactured as a single unit.

[0597] Touch sensor 261 may be disposed on at least one area of ​​display panel 251. For example, touch sensor 261 may be disposed on at least one side of display panel 251 overlapping with display panel 251. As an example, touch sensor 261 may be configured on one side of display panel 251 in the direction of image emission (e.g., the upper side).

[0598] Furthermore, the touch sensor 261 can be directly formed on at least one of the two sides of the display panel 251, or formed inside the display panel 251. For example, the touch sensor 261 can also be directly formed on the outer surface (e.g., the upper surface of the upper substrate or the lower surface of the lower substrate) of the upper substrate (or sealing layer) or the lower substrate of the display panel 251, or directly formed on the inner surface (e.g., the lower surface of the upper substrate or the upper surface of the lower substrate) of the upper substrate or the lower substrate.

[0599] When the touch sensor 261 is formed directly on the sealing layer of the display panel 251, the overall thickness of the sealing layer can be from 4 μm to 10 μm.

[0600] Touch sensor 261 includes an effective area AA capable of sensing touch input and an inactive area NAA surrounding at least a portion of the effective area AA. According to an embodiment, the effective area AA is configured to correspond to the display area DA of the display panel 251, and the inactive area NAA may be configured to correspond to the non-display area NDA of the display panel 251. For example, the effective area AA of touch sensor 261 overlaps with the display area DA of the display panel 251, and the inactive area NAA of touch sensor 261 may overlap with the non-display area NDA of the display panel 251.

[0601] According to one implementation, multiple touch sensing units TS are configured in an effective area AA. That is, the effective area AA can be a touch sensing area capable of sensing touch input made by the user.

[0602] Multiple touch sensing units TS include at least one touch electrode for detecting touch input. As an example, in the case of mutual capacitance, they include multiple first touch electrodes and multiple second touch electrodes. Specifically, a touch sensing unit TS can be a unit formed by the intersection of a first touch electrode and a second touch electrode for detecting changes in capacitance.

[0603] As another example, when multiple touch sensing units TS are self-capacitance type, they include multiple touch electrodes arranged in a matrix. Specifically, a touch sensing unit TS can be a unit used to detect changes in the capacitance of a touch electrode.

[0604] According to an embodiment, at least one touch electrode may be provided on the display area DA of the display panel 251. In this case, the at least one touch electrode may overlap in a plane with at least one of the electrodes and wiring provided with the display panel 251. For example, when the display panel 251 is an organic light-emitting display panel, the at least one touch electrode may overlap at least with the cathode electrode, data line, scan line, etc. When the display panel 251 is a liquid crystal display panel, the at least one touch electrode may overlap at least with the common electrode, data line, gate line, etc.

[0605] As described above, when the touch sensor 261 is coupled to the display panel 251, a parasitic capacitance is generated between the touch sensor 261 and the display panel 251. As an example, at least one touch electrode of the touch sensor 261 may be configured to overlap in a plane with at least one of the electrodes and wiring of the display panel 251, thereby generating a parasitic capacitance between the touch sensor 261 and the display panel 251.

[0606] Through the coupling effect of such parasitic capacitance, the signal from the display panel 251 can be transmitted to the touch sensor 261. For example, noise signals caused by display driving signals (e.g., data signals, scan signals, light emission control signals, etc.) applied to the display panel 251 can flow into the touch sensor 261.

[0607] In one embodiment of the electronic device 2, the display panel 251 may be an organic light-emitting display panel having a thin-film sealing layer, and the touch sensor 261 may be composed of an on-cell type sensor electrode in which at least one touch electrode is directly formed on one side (e.g., the upper surface) of the thin-film sealing layer. In this case, at least one of the electrodes and wiring of the organic light-emitting display panel (for example, a cathode electrode) and at least one touch electrode are arranged close to each other. As a result, noise signals caused by display driving can be transmitted to the touch sensor 261 with relatively high intensity.

[0608] Noise signals transmitted to touch sensor 261 can cause ripple in the sensing signal, potentially reducing the sensitivity of the touch sensor. To address this, this disclosure provides various embodiments capable of improving the sensitivity of the touch sensor, which will be described in detail below.

[0609] Next, refer to Figures 5 to 7 right Figure 2One embodiment of the display unit 250 shown in the figure will be described.

[0610] Figure 5 It is a brief illustration Figure 2 A block diagram of one mode of display unit 250. Figure 6 It is shown Figure 5 A graph of the pixels of the display section. Figure 7 It shows the driver Figure 5 A timing diagram of an example of the drive signals for the display section.

[0611] like Figure 5 As shown, the display unit includes: a display panel 251 including a plurality of pixels PX, a data driving unit 2522, a scan driving unit 2520, and a signal control unit 2524.

[0612] Display panel 251 includes a plurality of pixels PX arranged in a generally matrix-like pattern. Although not specifically restricted, the plurality of scan lines S1 to Si extend relatively along the row direction in the pixel arrangement and are almost parallel to each other, and the plurality of data lines D1 to Dj extend roughly along the column direction and are almost parallel to each other.

[0613] Each of the multiple pixels PX is connected to one corresponding scan line among the multiple scan lines S1 to Si connected to the display panel 251 and one corresponding data line among the multiple data lines D1 to Dj. Furthermore, although not in Figure 5 The display panel 251 is directly illustrated, but each of the multiple pixels PX is connected to a power supply connected to the display panel 251 to obtain a first power supply voltage ELVDD and a second power supply voltage ELVSS.

[0614] Each of the multiple pixels PX emits light at a predetermined grayscale by means of the driving current supplied to the organic light-emitting diode, based on the corresponding data signals transmitted through multiple data lines D1 to Dj.

[0615] The scan drive unit 2520 generates and transmits scan signals corresponding to each pixel through multiple scan lines S1 to Si. That is, the scan drive unit 2520 transmits scan signals to each pixel in the multiple pixels included in each pixel row through the corresponding scan lines.

[0616] The scan drive unit 2520 receives the scan drive control signal CONT2 transmitted from the signal control unit 2524, generates multiple scan signals, and sequentially provides scan signals to multiple scan lines S1 to Si connected to each pixel row. Furthermore, the scan drive unit 2520 generates a common control signal and provides it to a common control line connected to multiple pixels PX.

[0617] The data drive unit 2522 transmits data signals to the pixels through multiple data lines D1 to Dj.

[0618] The data driving unit 2522 receives the data driving control signal CONT1 provided by the signal control unit 2524, and provides corresponding data signals to the multiple data lines D1 to Dj that are connected to each pixel in the multiple pixels included in each pixel row.

[0619] The signal control unit 2524 converts the externally transmitted image signal into image data DATA and transmits it to the data drive unit 2522. The signal control unit 2524 receives external control signals such as the vertical synchronization signal Vsync, the horizontal synchronization signal Hsync, a clock signal, and a data enable signal to generate control signals for controlling the scan drive unit 2520 and the data drive unit 2522, and transmits them to the scan drive unit 2520 and the data drive unit 2522, respectively. That is, the signal control unit 2524 generates and transmits the scan drive control signal CONT2 for controlling the scan drive unit 2520 and the data drive control signal CONT1 for controlling the data drive unit 2522, respectively.

[0620] like Figure 6 As shown, pixel PX_lk may include an organic light-emitting diode (OLED), a first transistor TR1, a second transistor TR2, and an energy storage capacitor Cst. Pixel PX_lk may be located in the l-th pixel row and the k-th pixel column. For ease of explanation, each transistor is assumed to be a PMOS transistor.

[0621] The first transistor TR1 may be a driving transistor. In one embodiment, the first transistor TR1 may include a gate connected to the first node N1, a source connected to the first power supply voltage ELVDD, and a drain connected to the anode of the organic light-emitting diode (OLED).

[0622] The drive current is the current corresponding to the voltage difference between the gate and source of the first transistor TR1, and the drive current changes accordingly with the voltage of the data signal applied to the data line D1.

[0623] The second transistor TR2 is capable of being turned on according to the level of the scan signal applied to the scan line Sk to connect the first node N1 and the data line D1. In one embodiment, the second transistor TR2 may include a gate connected to the scan line Sk, a source connected to the data line D1, and a drain connected to the first node N1. In response to the corresponding scan signal S[k] transmitted through the k-th scan line Sk, the second transistor TR2 transmits the data voltage according to the data signal D[l] transmitted through the l-th data line D1 to the first node N1.

[0624] The energy storage capacitor Cst is connected between the first power supply voltage ELVDD and the first node N1. In one embodiment, the energy storage capacitor Cst may include one electrode connected to the first power supply voltage ELVDD and another electrode connected to the first node N1.

[0625] An organic light-emitting diode (OLED) is capable of emitting light through a drive current flowing from a first transistor TR1. In one embodiment, the OLED may include an anode connected to the drain of the first transistor TR1 and a cathode connected to a second power supply voltage ELVSS.

[0626] like Figure 7 As shown, the pulse period of the vertical synchronization signal Vsync can be one frame period (1 FRAME) of the display panel 251, which is related to the display frame rate.

[0627] Within one frame, the data driver 2522 can synchronize with the horizontal synchronization signal Hsync to apply enable level data signals to multiple data lines D1 to Dj. For example, in each pulse of the horizontal synchronization signal Hsync, the data driver 2522 applies the data signal corresponding to the pixel connected to the scan line to which the scan signal with a low level voltage L is applied to all of the multiple data lines D1 to Dj.

[0628] During one frame (1 FRAME), the scan drive unit 2520 can synchronize with the horizontal synchronization signal Hsync to sequentially apply scan signals S[1], S[2], ..., S[k-1], S[k] of low-level voltage L to multiple scan lines S1 to Si. For example, the scan drive unit 2520 applies a scan signal of low-level voltage L to the corresponding scan line for each pulse of the horizontal synchronization signal Hsync.

[0629] During the 1H period of the 1 level, that is, within one cycle of the pulse of the horizontal synchronization signal Hsync, there is a period dwp during which the data signal is applied to the data line and a period sp during which the scan signal is a low-level voltage L.

[0630] Regarding the periods dwp and sp, we will take the pixels connected to the scan line Sk and the data line DL as an example for explanation.

[0631] During level 1H, starting from t00, the data signal DATA[k] is applied to the data line Dl. At t10, the scan signal S[k] applied to the scan line Sk is changed to a low-level voltage L.

[0632] The time t10 when the scan signal S[k] is changed to a low-level voltage L can be the same as or different from the time t01 when the data signal DATA[k] is first applied to the data line Dl. For example, considering the RC delay of the data line Dl, the data signal DATA[k] can be applied to the data line Dl before the scan signal S[k] is changed to a low-level voltage L.

[0633] At t11, the scan signal S[k] is changed to a high-level voltage H. At t12, the interrupt applies the data signal DATA[k] to the data line D1. At t22, level 1H ends.

[0634] The time point t11 ​​when the scan signal S[k] changes to a high-level voltage H and the time point t12 when the data signal DATA[k] on the data line D1 is interrupted can be the same or different. For example, the interruption of the data signal DATA[k] on the data line D1 can occur after the scan signal S[k] changes to a high-level voltage H.

[0635] The data write period TA includes the period dwp and the period sp. Specifically, the data write period TA is the time point from the earlier of the start time of period dwp and the start time of period sp to the later of the end time of period dwp and the end time of period sp. For example, the data write period TA can be the period from t01 to t12.

[0636] Next, refer to Figure 8 as well as Figure 9 Another method of displaying the device will be explained.

[0637] Figure 8 It is a brief illustration Figure 2 Another block diagram of the display section. Figure 9 It is shown Figure 8 A graph of the pixels of the display section.

[0638] like Figure 8 As shown, the display unit includes: a display panel 251 including a plurality of pixels PX, a data driving unit 2522, a scan driving unit 2520, a light emission control driving unit 2526, and a signal control unit 2524.

[0639] The display panel 251 includes a plurality of pixels PX arranged in a generally matrix-like pattern. Although not specifically restricted, the plurality of scan lines S0 to Si and the plurality of light emission control lines E1 to Ei extend relatively along the row direction in the pixel arrangement and are almost parallel to each other, and the plurality of data lines D1 to Dj extend roughly along the column direction and are almost parallel to each other.

[0640] Each of the multiple pixels PX is respectively connected to: two corresponding scan lines among the multiple scan lines S0 to Si connected to the display panel 251, one corresponding light emission control line among the multiple light emission control lines E1 to Ei, and one corresponding data line among the multiple data lines D1 to Dj. Furthermore, although in Figure 8 The display panel 251 is not directly illustrated, but each of the multiple pixels PX is connected to a power supply connected to the display panel 251 to obtain a first power supply voltage ELVDD, a second power supply voltage ELVSS, and an initialization voltage VINT.

[0641] Each of the multiple pixels PX of the display panel 251 is connected to two corresponding scan lines. That is, it is connected to the scan line corresponding to the pixel row that includes the pixel and the scan line corresponding to the previous pixel row. The multiple pixels included in the first pixel row can each be connected to the first scan line S1 and the dummy scan line S0. In addition, the multiple pixels included in the i-th pixel row are each connected to the i-th scan line Si corresponding to the i-th pixel row of that pixel row and the (i-1)-th scan line Si-1 corresponding to the (i-1)-th pixel row that is the previous pixel row.

[0642] Each of the multiple pixels PX emits light of a predetermined brightness by using the driving current supplied to the organic light-emitting diode, based on the corresponding data signals transmitted through multiple data lines D1 to Dj.

[0643] The scan driving unit 2520 generates a scan signal corresponding to each pixel PX and transmits it through multiple scan lines S0 to Si. That is, the scan driving unit 2520 transmits the scan signal to each pixel PX of the multiple pixels PX included in each pixel row through the corresponding scan lines.

[0644] The scan drive unit 2520 receives the scan drive control signal CONT2 transmitted from the signal control unit 2524, generates multiple scan signals, and sequentially supplies scan signals to multiple scan lines S0 to Si connected to each pixel row.

[0645] The data drive unit 2522 transmits data signals to each pixel through multiple data lines D1 to Dj.

[0646] The data driving unit 2522 receives the data driving control signal CONT1 transmitted from the signal control unit 2524 and supplies corresponding data signals to the multiple data lines D1 to Dj that are connected to each pixel in the multiple pixels included in each pixel row.

[0647] The light emission control drive unit 2526 is connected to a plurality of light emission control lines E1 to Ei, which in turn are connected to a display panel 251 comprising a plurality of pixels PX arranged in a matrix. In other words, the plurality of light emission control lines E1 to Ei, which extend approximately opposite to and almost parallel to each other along the row direction of each pixel, connect the plurality of pixels PX to the light emission control drive unit 2526.

[0648] The light emission control driving unit 2526 generates and transmits light emission control signals corresponding to each pixel via multiple light emission control lines E1 to Ei. Each pixel receiving the light emission control signal is controlled to emit an image corresponding to the light emission image data signal in response to the control of the light emission control signal. That is, the light emission control transistors included in each pixel are controlled in response to the light emission control signal transmitted via the corresponding light emission control line. Figure 9 The operation of TR5 and TR6 allows the organic light-emitting diode (OLED) connected to the light-emitting control transistor to emit light or not emit light based on the brightness of the drive current corresponding to the data signal.

[0649] The first power supply voltage ELVDD, the second power supply voltage ELVSS, and the initialization voltage VINT are supplied to each pixel PX of the display panel 251. The first power supply voltage ELVDD can be a predetermined high-level voltage, and the second power supply voltage ELVSS can be a voltage lower than the first power supply voltage ELVDD or a ground voltage. The initialization voltage VINT can be set to a voltage value equal to or lower than the second power supply voltage ELVSS.

[0650] No special restrictions are placed on the voltage values ​​of the first power supply voltage ELVDD, the second power supply voltage ELVSS, and the initialization voltage VINT.

[0651] The signal control unit 2524 converts multiple image signals transmitted from the outside into multiple image data signals DATA and transmits them to the data drive unit 2522. The signal control unit 2524 receives a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, and a clock signal to generate control signals for controlling the scanning drive unit 2520, the light emission control drive unit 2526, and the data drive unit 2522, and transmits these signals to each of them. Specifically, the signal control unit 2524 generates a data drive control signal CONT1 for controlling the data drive unit 2522, a scan drive control signal CONT2 for controlling the scanning drive unit 2520, and a light emission drive control signal CONT3 for controlling the operation of the light emission control drive unit 2526.

[0652] like Figure 9As shown, pixel PX_ab includes an organic light-emitting diode (OLED), a storage capacitor Cst, and transistors TR1 through TR7. Pixel PX_ab can be located in the a-th pixel row and the b-th pixel column. For ease of explanation, each transistor is assumed to be a PMOS transistor.

[0653] The first transistor TR1 includes a gate connected to the first node N1, a source connected to the second node N2 connected to the drain of the fifth transistor TR5, and a drain connected to the third node N3. The drive current flows through the first transistor TR1 according to the corresponding data signal D[b].

[0654] The drive current is the current corresponding to the voltage difference between the source and gate of the first transistor TR1, and the drive current changes according to the data voltage of the applied data signal D[b].

[0655] The second transistor TR2 includes a gate connected to the a-th scan line Sa, a source connected to the b-th data line Db, and a drain. The drain is connected to the second node N2, which is jointly connected to the source of the first transistor TR1 and the drain of the fifth transistor TR5. In response to the corresponding scan signal S[j] transmitted through the a-th scan line Sa, the second transistor TR2 transmits the data voltage according to the data signal D[b] transmitted through the b-th data line Db to the second node N2.

[0656] The third transistor TR3 includes a gate connected to the a-th scan line Sa, and two terminals connected to the gate and drain of the first transistor TR1, respectively. The third transistor TR3 operates in response to the corresponding scan signal S[j] transmitted through the a-th scan line Sa. When the third transistor TR3 is turned on, it connects the gate and drain of the first transistor TR1, thereby forming a diode connection for the first transistor TR1.

[0657] When the first transistor TR1 is connected in diode mode, a voltage equal to the threshold voltage of the first transistor TR1, which is compensated by the data voltage I applied to the source of the first transistor TR1, is applied to the gate of the first transistor TR1. The gate of the first transistor TR1 is connected to one electrode of the energy storage capacitor Cst, and thus the voltage is maintained through the energy storage capacitor Cst. Since the voltage compensating for the threshold voltage of the first transistor TR1 is applied to the gate and maintained, the drive current flowing through the first transistor TR1 is not affected by the threshold voltage of the first transistor TR1.

[0658] The fourth transistor TR4 includes a gate connected to the (a-1)th scan line Sa-1, a source connected to the initialization voltage VINT, and a drain connected to the first node N1. In response to the (a-1)th scan signal S[a-1] transmitted through the (a-1)th scan line Sa-1, the fourth transistor TR4 transmits the initialization voltage VINT applied by the initialization voltage VINT to the first node N1. The fourth transistor TR4 may also transmit the initialization voltage VINT to the first node N1 before the data signal D[b] is applied, in response to the (a-1)th scan signal S[a-1] already transmitted to the (a-1)th scan line Sa-1 corresponding to the previous pixel row including the j-th pixel row of pixel PX_ab.

[0659] At this time, the initialization voltage VINT is not restricted, but it can be set to a low voltage level to sufficiently reduce the gate voltage of the first transistor TR1 for initialization. That is, during the period when the (a-1)th scan signal S[a-1] is transmitted to the gate of the fourth transistor TR4 as the gate on voltage level, the gate of the first transistor TR1 is initialized to the initialization voltage VINT.

[0660] The fifth transistor TR5 includes a gate connected to the j-th light-emitting control line Ej, a source connected to the first power supply voltage ELVDD, and a drain connected to the second node N2.

[0661] The sixth transistor TR6 includes a gate connected to the j-th light-emitting control line Ej, a source connected to the third node N3, and a drain connected to the anode of the organic light-emitting diode (OLED).

[0662] Transistor TR5 (5th transistor) and transistor TR6 (6th transistor) operate in response to the j-th light-emitting control signal E[j] transmitted via the j-th light-emitting control line Ej. When transistors TR5 and TR6 are turned on in response to the j-th light-emitting control signal E[j], a current path is formed from the first power supply voltage ELVDD towards the organic light-emitting diode (OLED) to allow the driving current to flow. In this case, the OLED emits light with the driving current, thereby displaying an image of the data signal.

[0663] The energy storage capacitor Cst includes one electrode connected to the first node N1 and another electrode connected to the first power supply voltage ELVDD. As described above, the energy storage capacitor Cst is connected between the gate of the first transistor TR1 and the first power supply voltage ELVDD, thus enabling it to maintain the voltage applied to the gate of the first transistor TR1.

[0664] The 7th transistor TR7 includes a gate connected to the (a-1)th scan line Sa-1, a source connected to the anode of the organic light-emitting diode (OLED), and a drain connected to the power supply of the initialization voltage VINT.

[0665] The seventh transistor TR7 can, in response to the (a-1)th scan signal S[a-1] pre-transmitted to the (a-1)th scan line Sa-1 corresponding to the (j)th pixel row including pixel PX_ab, pass the initialization voltage VINT to the anode of the organic light-emitting diode (OLED). The anode of the OLED is reset to a sufficiently low voltage by the passed initialization voltage VINT.

[0666] Figure 10 This is a diagram that briefly illustrates a touch sensing unit according to one embodiment.

[0667] According to one embodiment, the touch sensing unit 260 may include a touch sensor 261 and a touch controller 262 for controlling the touch sensor 261. The touch controller 262 may include a driving unit 2620 and a receiving unit 2622 for transmitting and receiving signals with the touch sensor 261, as well as a control unit 2624.

[0668] Touch sensor 261 may include a plurality of first touch electrodes 111-1 to 111-m for detecting touch coordinates in a first direction and a plurality of second touch electrodes 121-1 to 121-n for detecting touch coordinates in a second direction intersecting the first direction. For example, touch sensor 261 may include a plurality of first touch electrodes 111-1 to 111-m having a shape extending along the second direction and a plurality of second touch electrodes 121-1 to 121-n having a shape extending along the first direction intersecting the second direction. In touch sensor 261, the plurality of first touch electrodes 111-1 to 111-m may be arranged along the first direction, and the plurality of second touch electrodes 121-1 to 121-n may be arranged along the second direction.

[0669] Multiple first touch electrodes 111-1 to 111-m are connected to the driving unit 2620, and multiple second touch electrodes 121-1 to 121-n are connected to the receiving unit 2622. Figure 10 The driving unit 2620, receiving unit 2622 and control unit 2624 are shown separately in the illustration, but they can be implemented as a module, unit or chip, and are not limited thereto.

[0670] The driving unit 2620 can apply driving signals to a plurality of first touch electrodes 111-1 to 111-m. The receiving unit 2622 can receive sensing signals from a plurality of second touch electrodes 121-1 to 121-n.

[0671] The above description explains that the touch sensing unit 260 is implemented in a mutual capacitance manner. However, the touch sensing unit 260 can also be implemented in a self-capacitance manner. It would be easy for a person skilled in the art to modify the touch electrodes 111-1 to 111-m, 121-1 to 121-n, the driving unit 2620 and the receiving unit 2622 in the mutual capacitance manner by appropriately modifying them, adding new components or omitting some structural elements to make them suitable for the self-capacitance manner.

[0672] Figure 11 This is a simplified diagram illustrating a touch sensing unit 260 according to one embodiment. Figure 12 This is a diagram illustrating an example of a stylus touching a touch sensing unit 260 according to one embodiment.

[0673] Reference Figure 11 According to one embodiment, the touch sensing unit 260 includes a touch sensor 261 and a touch controller 262 that controls the touch sensor 261. The touch controller 262 may include a first driving / receiving unit 2620', a second driving / receiving unit 2622' that transmit and receive signals with the touch sensor 261, and a control unit 2624.

[0674] The touch sensor 261 may include a plurality of touch electrodes 111-1 to 111-m, 121-1 to 121-n.

[0675] The touch sensing unit 260 in this embodiment may not include the coil driver 263 and the loop coil 264.

[0676] Touch sensor 261 includes a plurality of first touch electrodes 111-1 to 111-m having a shape extending along a first direction, and a plurality of second touch electrodes 121-1 to 121-n having a shape extending along a second direction intersecting the first direction. In touch sensor 261, the plurality of first touch electrodes 111-1 to 111-m can be arranged along the second direction, and the plurality of second touch electrodes 121-1 to 121-n can be arranged along the first direction. Although in Figure 11 In the illustration, the shape of the touch sensor 261 is shown as a quadrilateral, but it is not limited to this.

[0677] Although Figure 11 The shape of the touch sensor 261 is illustrated as a quadrilateral, but it is not limited to this. The touch sensor 261 can have any shape. For example, any shape can be a circle, an ellipse, a polygon with a part of a circle, or a polygon other than a quadrilateral. Any shape includes shapes in which a part of the shape is a curved figure.

[0678] The touch sensing unit 260 can be used to sense touch input (direct touch or proximity touch) from a touch object. The touch sensing unit 260 can also sense touch input from the stylus 10 that is close to the touch sensor 261.

[0679] like Figure 12 As shown in (a) and (b), the touch sensor 261 also includes an insulating layer 23 and a window 22. A touch electrode layer 21 may be located on the insulating layer 23, and the touch electrode layer 21 includes a plurality of first touch electrodes 111-1 to 111-m and a plurality of second touch electrodes 121-1 to 121-n. The window 22 may be located on the touch electrode layer 21. Figure 12 In (a) and (b), the plurality of first touch electrodes 111-1 to 111-m and the plurality of second touch electrodes 121-1 to 121-n are located in the same layer, but they may also be located in different layers, and are not limited thereto.

[0680] Multiple first touch electrodes 111-1 to 111-m are connected to a first driving / receiving unit 2620', and multiple second touch electrodes 121-1 to 121-n are connected to a second driving / receiving unit 2622'. Figure 11 In the figure, the first driver / receiver unit 2620' and the second driver / receiver unit 2622' are shown separately, but the first driver / receiver unit 2620' and the second driver / receiver unit 2622' can be implemented as a module, unit or chip, and are not limited thereto.

[0681] The first driving / receiving unit 2620' can apply driving signals to a plurality of first touch electrodes 111-1 to 111-m through multiple touch channels. Furthermore, the first driving / receiving unit 2620' can also receive sensing signals from the plurality of first touch electrodes 111-1 to 111-m through multiple touch channels. Similarly, the second driving / receiving unit 2622' can apply driving signals to a plurality of second touch electrodes 121-1 to 121-n through multiple touch channels. Furthermore, the second driving / receiving unit 2622' can also receive sensing signals from the plurality of first touch electrodes 121-1 to 121-n through multiple touch channels.

[0682] That is, the first driver / receiver unit 2620' and the second driver / receiver unit 2622' can be a transceiver for transmitting and receiving signals.

[0683] When a drive signal is applied from the first drive / receiver unit 2620' to the plurality of first touch electrodes 111-1 to 111-m, the touch channel corresponding to the plurality of first touch electrodes 111-1 to 111-m operates as a drive channel. Furthermore, when a sensing signal is transmitted from the plurality of first touch electrodes 111-1 to 111-m to the first drive / receiver unit 2620', the touch channel corresponding to the plurality of first touch electrodes 111-1 to 111-m operates as a sensing channel. Similarly, when a drive signal is applied from the second drive / receiver unit 2622' to the plurality of second touch electrodes 121-1 to 121-n, the touch channel corresponding to the plurality of second touch electrodes 121-1 to 121-n operates as a drive channel. Furthermore, when transmitting sensing signals from the plurality of second touch electrodes 121-1 to 121-n to the second driving / receiving unit 2622', the touch channels corresponding to the plurality of second touch electrodes 121-1 to 121-n operate as sensing channels.

[0684] The driving signal may include a signal (e.g., a sine wave, a square wave, etc.) having a frequency corresponding to the resonant frequency of the stylus 10. The resonant frequency of the stylus 10 is related to the design value of the resonant circuit section 12 of the stylus.

[0685] The touch sensing unit 260 can be used to sense touch input (direct touch or proximity touch) from a touch object. For example... Figure 12 As shown in (a), the touch input of the stylus 10 that is close to the touch sensor 261 can be sensed by the touch sensing unit 260.

[0686] like Figure 12 As shown in (b), the touch screen 20 includes a display panel 251 and a touch sensor 261 on the display panel 251. The touch sensor 261 may include a substrate 23, a touch electrode layer 21 on the substrate, and a window 22 on the touch electrode layer 21.

[0687] The touch electrode 21 includes a plurality of first touch electrodes 111-1, 111-2, ..., 111-m and a plurality of second touch electrodes 121-1, 121-2, ..., 121-n. Figure 12 In (b), the touch electrode 21 is shown as a single layer, but the first touch electrode and the second touch electrode may also be located in different layers, and are not limited thereto.

[0688] The window 22 can be located on the touch electrode 21. The touch electrode 21, the conductive tip 11, and the window 22 can form a capacitor Cx. Therefore, signals generated in the stylus 10 (resonance signals or active touch signals) can be transmitted to the touch electrode 21.

[0689] like Figure 12As shown in (a), the touch sensing unit 260 can be used to sense touch input (direct touch or proximity touch) made by a touch object. Figure 12 As shown in (b), the touch input of the stylus 10 that is close to the touch sensor 261 can be sensed by the touch sensing unit 260.

[0690] Figure 13 This diagram illustrates the application of drive signals to the stylus and the user's hand holding it.

[0691] like Figure 13 As shown in (a), the drive signal is transmitted to the resonant circuit section 12 through the capacitance formed between the stylus 10 and the conductive tip 11.

[0692] However, assuming that the user holds the stylus 10 with his hand 30 and takes notes on the touch sensing unit 260, in addition to the capacitance formed between the touch electrodes 111, 121 and the conductive tip 11, there is also capacitance formed between the user's hand 30 and the touch electrodes 111, 121.

[0693] If the same driving signal is applied to multiple touch electrodes 111, 121 under such connection conditions, then as Figure 13 As shown in (b), the drive signal is transmitted not only to the capacitance formed between the conductive tip 11 of the stylus 10 and the capacitance of the user's hand 30. From the point that the user's hand 30 is connected to the ground portion 15 of the stylus 10, the drive signal is transmitted to the resonant circuit portion 12.

[0694] On the other hand, the resonant circuit section 12 resonates using the signal transmitted through the conductive tip 11 and the voltage difference between it and the ground portion 15 of the stylus 10. However, if the same driving signal is applied to the ground portion 15 of the stylus 10 through the hand 30, the voltage difference between the conductive tip 11 and the ground portion 15 of the stylus 10 decreases, thus reducing the magnitude of the resonant signal. For more information, see [reference needed]. Figures 14 to 15 Let me explain in detail.

[0695] Figure 14 This diagram illustrates a case where a stylus is used to perform touch input on a touch sensing unit 260 according to one embodiment. Figure 15 It is shown in Figure 14 A diagram illustrating the effect of the drive signal transmitted to the hand.

[0696] like Figure 14 As shown, the tip 11 of the stylus 10 forms capacitors Ct1 and Ct2 with the second touch electrodes 121-3 and 121-4, respectively.

[0697] When a user holds the stylus 10 and performs touch input on the touch sensor 261, the user's hand 30 can contact the touch sensor 261 while being separated from the conductive tip 11 of the stylus 10. For example, as Figure 15 As shown, the user's hand 30 contacts the area of ​​the touch sensor 261 where the second touch electrodes 121-7 and 121-8 are configured. That is, the user's hand 30 can form a capacitance with the second touch electrodes 121-7 and 121-8.

[0698] Reference Figure 15 The touch electrodes of the touch sensor 261 can form a capacitance with the conductive tip 11 of the stylus 10. For example, the second touch electrode 121-3 of the touch sensor 261 forms a capacitance Ct1 with the conductive tip 11 of the stylus 10, and the second touch electrode 121-4 forms a capacitance Ct2 with the conductive tip 11 of the stylus 10. One end of the resonant circuit section 12 of the stylus 10 is electrically connected to the second touch electrodes 121-3 and 121-4.

[0699] The touch electrodes of the touch sensor 261 can form a capacitance with the user's hand 30. For example, the second touch electrode 121-8 of the touch sensor 261 forms a capacitance Cp1 with the user's hand 30, and the second touch electrode 121-8 forms a capacitance Cp2 with the user's hand 30.

[0700] Since the user's hand 30 holds the stylus 10, that is, holds the grounding part 15 (or the main body part 17) of the stylus 10, the user's hand 30 is electrically connected to the grounding part 15 of the stylus 10, or the user's hand 30 and the grounding part 15 of the stylus 10 form a capacitor Ccp through the main body part 17. That is, the other end of the resonant circuit part 12 is electrically connected to the user's hand 30.

[0701] In addition, a capacitance Cpg is formed between the user's hand 30 and the ground of the touch sensor 261, and a capacitance Csg is formed between the ground portion 15 of the stylus 10 and the ground of the touch sensor 261.

[0702] The driving signals applied to the touch electrodes 121-8 and 121-9 are transmitted to the other end of the resonant circuit section 12 through the capacitors Cp1 and Cp2 between the touch electrodes 121-8 and 121-9 and the user's hand 30, and the capacitor Ccp between the user's hand 30 and the ground part 15 of the stylus 10.

[0703] As described above, when a drive signal is applied to the grounding portion 15, the grounding portion 15 of the stylus 10 becomes abnormal and cannot maintain a stable grounding state, and the voltage level changes with the drive signal. On the other hand, the resonant circuit portion 12 stores the energy required for resonance by utilizing the voltage difference between the grounding portion 15 and the conductive tip 11, but if the potential of the grounding portion 15 changes with the drive signal, the voltage difference between the grounding portion 15 and the conductive tip 11 decreases, thereby reducing the magnitude of the resonant signal.

[0704] To address this issue, existing technology, when a user's hand 30 or similar contact object and the stylus 10 are simultaneously in contact with the touch sensor 261, does not apply a drive signal to the expected location of the user's hand, or applies a drive signal with a 180-degree phase difference, so that the magnitude of the resonant signal generated by the stylus 10 is not reduced. For such operation, refer to the following... Figure 16 Let me explain.

[0705] Figure 16 This is a diagram illustrating the operation of applying a drive signal to a touch sensing unit 260 according to one embodiment.

[0706] Reference Figure 16 When the user's hand 30 holds the stylus 10 and is located on the touch sensor 261, the conductive tip 11 of the stylus 10 can be located on the second touch electrodes 121-3 and 121-4, and the user's hand 30 can be located on the second touch electrodes 121-8 and 121-9.

[0707] In this case, the second driving / receiving unit 2622' can apply a first driving signal to the second touch electrodes 121-3 and 121-4 where the stylus 10 is located, and apply a second driving signal with a 180-degree phase difference from the first driving signal to the second touch electrodes 121-8 and 121-9 which are arranged adjacent to the second touch electrodes 121-3 and 121-4 to which the first driving signal is applied.

[0708] At this time, the second drive / receiver 2622' can maintain a certain voltage (e.g., grounded state) for other second touch electrodes 121-1, 121-2, 121-5, 121-6, and 121-7 arranged adjacent to the second touch electrodes 121-3 and 121-4. In the illustrated example, the second touch electrodes 121-5, 121-6, and 121-7 are grounded between the second touch electrodes to which the first drive signal and the second drive signal are applied. However, in practice, the touch electrodes to which the first drive signal and the touch electrodes to which the second drive signal are applied can be arranged continuously. Furthermore, the control unit 2624 can also change the grounding of the second touch electrodes 121-1, 121-2, 121-5, 121-6, and 121-7 to a floating state. The so-called floating state means that the specific electrode is not grounded or connected to other circuits, but is left open.

[0709] Because a drive signal with a 180-degree phase difference is provided to the ground portion 15 of the stylus 10, the voltage difference between the two ends of the resonant circuit portion 12 is increased compared to the case where the ground portion 15 of the stylus 10 is ideally grounded. Therefore, the energy available for resonance is increased, and the stylus 10 is able to generate a larger resonant signal.

[0710] However, when the stylus 10 and the user's hand 30 each form a capacitor with the same touch electrode, it is difficult to increase the magnitude of the resonant signal using the implementation described above.

[0711] Figure 17 This diagram illustrates another case where touch input is performed using a stylus on a touch sensing unit 260 according to one embodiment. Figure 18 It is shown in Figure 17 A diagram illustrating the effect of the drive signal transmitted to the hand.

[0712] Reference Figure 17 The tip 11 of the stylus 10 forms capacitors Cx1, Cx2, and Cx3 with the second touch electrode 121-4 and the first touch electrodes 111-2 and 111-3, respectively.

[0713] When a user holds the stylus 10 to perform touch input on the touch sensor 261, the user's hand 30 can contact the touch sensor 261 while being separated from the conductive tip 11 of the stylus 10. At this time, the user's hand 30 and the conductive tip 11 can be located together on the same touch electrode. For example, as... Figure 18 As shown, the user's hand 30 contacts the area within the touch sensor 261 where the second touch electrode 121-4 is disposed. That is, the user's hand 30 can form a capacitance with the second touch electrode 121-4.

[0714] Reference Figure 18 The touch electrodes of the touch sensor 261 can form a capacitor with the conductive tip 11 of the stylus 10. For example, the second touch electrode 121-4 of the touch sensor 261 forms a capacitor Cx1 with the conductive tip 11 of the stylus 10, and the first touch electrodes 111-2 and 111-3 of the touch sensor 261 form capacitors Cx2 and Cx3 with the conductive tip 11 of the stylus 10, respectively. One end of the resonant circuit section 12 of the stylus 10 is electrically connected to the second touch electrode 121-4 and the first touch electrodes 111-2 and 111-3.

[0715] The touch electrodes of the touch sensor 261 can form a capacitance with the user's hand 30. For example, the second touch electrode 121-4 of the touch sensor 261 forms a capacitance Cb4 with the user's hand 30, and the first touch electrode 111-8 forms a capacitance Cb2 with the user's hand 30.

[0716] Since the user's hand 30 holds the stylus 10, that is, holds the grounding part 15 (or the main body part 17) of the stylus 10, the user's hand 30 is electrically connected to the grounding part 15 of the stylus 10, or the user's hand 30 and the grounding part 15 of the stylus 10 form a capacitor Ccp through the main body part 17. That is, the other end of the resonant circuit part 12 is electrically connected to the user's hand 30.

[0717] In addition, a capacitance Cpg is formed between the user's hand 30 and the ground of the touch sensor 261, and a capacitance Csg is formed between the ground portion 25 of the stylus 10 and the ground of the touch sensor 261.

[0718] The driving signal applied to the touch electrode 121-4 is transmitted to the other end of the resonant circuit section 12 through the capacitance Cb4 between the touch electrode 121-4 and the user's hand 30 and the capacitance Ccp between the user's hand 30 and the ground part 15 of the stylus 10.

[0719] Thus, as the driving signal is applied to the ground portion 15, the ground portion 15 of the stylus 10 cannot ideally maintain a stable grounding state, and the voltage level changes with the driving signal. On the other hand, the resonant circuit portion 12 uses the voltage difference between the ground portion 15 and the conductive tip 11 to store the energy required for resonance, but if the potential of the ground portion 15 changes with the driving signal, the voltage difference between the ground portion 15 and the conductive tip 11 decreases, thereby reducing the magnitude of the resonant signal.

[0720] Figure 19 This is a diagram illustrating the operation of applying a drive signal to a touch sensing unit 260 according to one embodiment.

[0721] Reference Figure 19When the user's hand 30 holds the stylus 10 on the touch sensor 261, the conductive tip 11 of the stylus 10 can be located on the second touch electrode 121-4, and the user's hand 30 can also be located on the second touch electrode 121-4.

[0722] The second driving / receiving unit 2622 can apply a first driving signal to the second touch electrode 121-4 where the stylus 10 and hand 30 are located. For the second touch electrodes 121-8 and 121-9 arranged adjacent to the second touch electrode 121-4 to which the first driving signal is applied, a second driving signal with a 180-degree phase difference from the first driving signal can be applied.

[0723] In this case, through the capacitor Cb4 formed between the touch electrodes 121-4 and the user's hand 30, and the capacitor Ccp formed between the user's hand 30 and the ground portion 15 of the stylus 10, a drive signal with the same phase as the conductive tip 11 is also transmitted to the ground portion 15 of the stylus 10. Therefore, the voltage difference of the drive resonant circuit is significantly reduced compared to when there is no drive signal flowing in from the hand 30. That is, if the drive signal is transmitted to the ground portion 15 of the stylus 10 through the hand 30, the voltage difference across the resonant circuit portion 12 is reduced, and therefore the energy available for resonance is reduced.

[0724] Reference Figures 20 to 24 The touch sensing unit according to the embodiments of the present disclosure will be described.

[0725] Figure 20 This is a diagram that briefly illustrates a touch sensing unit according to one embodiment.

[0726] Reference Figure 20 According to one embodiment, the touch sensing unit includes a touch sensor 261 and a touch controller 262 that controls the touch sensor 261. The touch controller 262 may include first to third driving / receiving units 2620, 2622, and 2626 that transmit and receive signals with the touch sensor 261, and a control unit 2624.

[0727] Touch sensor 261 includes a plurality of first touch electrodes 111-1 to 111-m having a shape extending along a first direction, a plurality of second touch electrodes 121-1 to 121-n having a shape extending along a second direction intersecting the first direction, and a plurality of third touch electrodes 131-11 to 131-ab arranged in a matrix shape. Within touch sensor 261, the plurality of first touch electrodes 111-1 to 111-m can be arranged along the second direction, and the plurality of second touch electrodes 121-1 to 121-n can be arranged along the first direction. The plurality of third touch electrodes 131-11 to 131-ab can be arranged in a dot matrix shape. A third touch electrode (e.g., 131-11) can be configured corresponding to the region of a plurality of intersection points where adjacent first touch electrodes (e.g., 111-1 to 111-4) and adjacent second touch electrodes (e.g., 121-1 to 121-4) intersect. Figure 20 In the illustration, the shape of the touch sensor 261 is shown as a quadrilateral, but it is not limited to this.

[0728] Multiple first touch electrodes 111-1 to 111-m are connected to the first driving / receiving unit 2620, multiple second touch electrodes 121-1 to 121-n are connected to the second driving / receiving unit 2622, and multiple third touch electrodes 131-11 to 131-ab are connected to the third driving / receiving unit 2626. Figure 1 The first driver / receiver unit 2620, the second driver / receiver unit 2622, the third driver / receiver unit 2626 and the control unit 2624 are shown to be separate, but they can also be implemented as a single module, unit or chip, and are not limited thereto.

[0729] The first driving / receiving unit 2620 can apply driving signals to a plurality of first touch electrodes 111-1 to 111-m. Furthermore, the first driving / receiving unit 2620 can receive sensing signals from the plurality of first touch electrodes 111-1 to 111-m. Similarly, the second driving / receiving unit 2622 can apply driving signals to a plurality of second touch electrodes 121-1 to 121-n. Furthermore, the second driving / receiving unit 2622 can receive sensing signals from the plurality of second touch electrodes 121-1 to 121-n. Similarly, the third driving / receiving unit 2626 can apply driving signals to a plurality of third touch electrodes 131-11 to 131-ab. Furthermore, the third driving / receiving unit 2626 can receive sensing signals from the plurality of third touch electrodes 131-11 to 131-ab.

[0730] The first driver / receiver unit 2620, the second driver / receiver unit 2622, and the third driver / receiver unit 2626 can be transceivers for transmitting and receiving signals, and may include a driver unit that generates and outputs driver signals and a receiver unit that receives signals, respectively. However, the first driver / receiver unit 2620, the second driver / receiver unit 2622, and the third driver / receiver unit 2626 can be either a driver that only transmits signals or a receiver that only receives signals, and are not limited to the above description.

[0731] The driving signal may include a signal (e.g., a sine wave, a square wave, etc.) having a frequency corresponding to the resonant frequency of the stylus 10. The resonant frequency of the stylus 10 is related to the design value of the resonant circuit section 23 of the stylus.

[0732] The touch sensing unit 260 can be used to sense touch input (direct touch or proximity touch) made by a touch object.

[0733] Figure 21 This is a partial top view of a touch sensor 261 according to one embodiment. Figure 22 It is shown in detail Figure 21 A partial top view, Figure 23 It is along Figure 22 A sectional view cut along the X-X' axis. Figure 24 This is a partial top view of a touch sensor 261 according to another embodiment.

[0734] Reference Figure 21 as well as Figure 22 The touch sensor 261 may include first touch electrodes 111-1 to 111-8, second touch electrodes 121-1 to 121-7, third touch electrodes 131-11 to 131-22, first wiring CHY-1 to CHY-8, second wiring CHX-1 to CHX-7, third wiring CHD-1 to CHD-4, first pad PD1, and second pad PD2.

[0735] The first touch electrodes 111-1 to 111-8 may be arranged along the first direction X. The first touch electrodes 111-1 to 111-8 may each include a plurality of first sensor patterns SP1 arranged along the second direction Y and a first connection pattern BP1 electrically connecting adjacent first sensor patterns SP1 to each other.

[0736] The second touch electrodes 121-1 to 121-7 may be arranged along the second direction Y. The second touch electrodes 121-1 to 121-7 may each include a plurality of second sensor patterns SP2 arranged along the first direction X and a second connection pattern BP2 that electrically connects adjacent second sensor patterns SP2 to each other.

[0737] The first sensor pattern SP1 and the second sensor pattern SP2 may each include an outer contour line OL and an inner contour line IL. In a plane, the inner contour line IL may be defined inside the outer contour line OL. In a plane, the first sensor pattern SP1 and the second sensor pattern SP2 may not be configured within the inner contour region ILA enclosed by the inner contour line IL.

[0738] The third touch electrodes 131-11 to 131-22 may be referred to as the third sensor pattern SP3, the self-capacitance sensor pattern SP3, or the action dummy pattern SP3. Each of the third touch electrodes 131-11 to 131-22 may include a plurality of third sensor patterns SP3 and a third connection pattern BP3 that electrically connects adjacent third sensor patterns SP3 to each other.

[0739] The third sensor pattern SP3 can be disposed on a plane within the inner contour region ILA. The third sensor pattern SP3 can be insulated from the first sensor pattern SP1 and the second sensor pattern SP2. That is, each of the first and second sensor patterns SP1 and SP2 has a defined opening. The opening can correspond to the inner contour region ILA. Each opening can be configured with either the third sensor pattern SP3 or a dummy pattern DMP.

[0740] exist Figure 22 In this configuration, the third sensor pattern SP3 can be configured within a portion of the inner contour region ILA of the first sensor pattern SP1 and the second sensor pattern SP2. In this case, a dummy pattern DMP can be configured within the inner contour region ILA of the other portion of the first sensor pattern SP1 and the second sensor pattern SP2, where the third sensor pattern SP3 is not configured. Figure 21 as well as Figure 22 In order to distinguish the area where the third sensor pattern SP3 is configured and the area where the dummy pattern DMP is configured, the location of the third sensor pattern SP3 is indicated by a dot. The dummy pattern DMP can be a floating electrode that does not receive additional electrical signals from the outside. Therefore, additional signal wiring connected to the dummy pattern DMP can be omitted. The dummy pattern DMP can be insulated from the first sensor pattern SP1, the second sensor pattern SP2, and the third sensor pattern SP3.

[0741] The first sensor pattern SP1 and the second sensor pattern SP2 can form mutual capacitance to sense touch applied from the outside. In addition, the third sensor pattern SP3 can each sense external touch through changes in its self-capacitance.

[0742] According to an embodiment of the present invention, the touch sensor 261 can realize touch in both mutual capacitance and self-capacitance modes.

[0743] The first sensor pattern SP1, the second sensor pattern SP2, the third sensor pattern SP3, the first connection pattern BP1, and the second connection pattern BP2 may each comprise a transparent conductive oxide. For example, each of the first sensor pattern SP1, the second sensor pattern SP2, the third sensor pattern SP3, the first connection pattern BP1, and the second connection pattern BP2 may comprise at least one of indium zinc oxide (IZO), indium tin oxide (ITO), indium calcium oxide (IGO), indium zinc calcium oxide (IGZO), and mixtures / compounds thereof. However, the present invention is not limited thereto.

[0744] It is possible that the first wiring CHY-1 to CHY-8 is connected to the first touch electrodes 111-1 to 111-8, the second wiring CHX-1 to CHX-7 is connected to the second touch electrodes 121-1 to 121-7, and the third wiring CHD-1 to CHD-4 is connected to the third touch electrodes 131-11 to 131-22.

[0745] The first wiring CHY-1 to CHY-8 can be connected to the first sensor pattern SP1 disposed at the respective end of the first touch electrodes 111-1 to 111-8.

[0746] The second wiring CHX-1 to CHX-7 can be connected to the second sensor pattern SP2 disposed at the respective ends of the second touch electrodes 121-1 to 121-7, and the third wiring CHD-1 to CHD-4 can be connected to the third touch electrodes 131-11 to 131-22 in a one-to-one correspondence.

[0747] A portion of the third wiring CHD-1 to CHD-4, the third wiring CHD-4, can be connected to the third touch electrodes 131-22 located inside the touch sensor 261 via a connecting wiring CL extending along the outer contour line OL. The connecting wiring CL is configured between the outer contour lines OL of two adjacent sensor patterns, which can minimize the parasitic capacitance with the sensor patterns.

[0748] However, the present invention is not limited thereto. For example, multiple wirings may be connected to each of the second touch electrodes 121-1 to 121-7 as with the first touch electrodes 111-1 to 111-8. Furthermore, in another embodiment, wirings may be connected only on one side of each of the first touch electrodes 111-1 to 111-8. A touch device according to an embodiment of the present invention may include sensor electrodes having various connection relationships with signal wirings, and is not limited to a specific structure.

[0749] like Figure 24 As shown, a portion of the third wiring CHD-1 to CHD-4, the third wiring CHD-4, can be connected to the third touch electrode 131-22 located inside the touch sensor 261 via a dummy pattern DMP.

[0750] The first wiring CHY-1 to CHY-8, the second wiring CHX-1 to CHX-7, and the third wiring CHD-1 to CHD-4 may each have a single-layer or multi-layer structure. Furthermore, the first wiring CHY-1 to CHY-8, the second wiring CHX-1 to CHX-7, and the third wiring CHD-1 to CHD-4 may each contain a transparent conductive oxide, which may contain molybdenum, silver, titanium, copper, aluminum, or alloys thereof. This transparent conductive oxide includes at least one of indium zinc oxide (IZO), indium tin oxide (ITO), indium calcium oxide (IGO), indium zinc calcium oxide (IGZO), and mixtures / compounds thereof.

[0751] The first wiring CHY-1 to CHY-8, the second wiring CHX-1 to CHX-7, and the third wiring CHD-1 to CHD-4 are electrically connected to the first driving / receiving unit 2620, the second driving / receiving unit 2622, and the third driving / receiving unit 2626 provided from the outside of the touch sensor 261, respectively.

[0752] Refer to together Figure 23 The touch sensor 261 includes a first conductive layer 101, an insulating layer 105, a second conductive layer 102, and a window 103.

[0753] The first conductive layer 101 and the second conductive layer 102 may each include multiple conductive patterns. The multiple conductive patterns may be included in... Figure 21 as well as Figure 22 The first touch electrodes 111-1 to 111-8, the second touch electrodes 121-1 to 121-7, the third touch electrodes 131-11 to 131-22, the first wiring CHY-1 to CHY-8, the second wiring CHX-1 to CHX-7, and the third wiring CHD-1 to CHD-4 are described below. These will be explained in detail below.

[0754] An insulating layer 105 is disposed between the first conductive layer 101 and the second conductive layer 102. The insulating layer 105 separates and isolates the first conductive layer 101 and the second conductive layer 102 in cross-section. That is, the first conductive layer 101 and the second conductive layer 102 can be electrically insulated by the insulating layer 105. A portion of the first conductive layer 101 and the second conductive layer 102 can be electrically connected through contact holes penetrating the insulating layer 105. The insulating layer 105 may contain organic and / or inorganic materials.

[0755] The window 103 covers and protects the second conductive layer 102. The window 103 may be insulating. The window 103 may include at least one inorganic film and / or an organic film. Depending on the circumstances, the window 103 may be omitted.

[0756] The first touch electrodes 111-1 to 111-8 may include a first sensor pattern SP1 disposed on the second conductive layer 102 and a first connection pattern BP1 disposed on the second conductive layer 102.

[0757] The second touch electrodes 121-1 to 121-7 may include a second sensor pattern SP2 disposed on the second conductive layer 102 and a second connection pattern BP2 disposed on the first conductive layer 101. The second sensor pattern SP2 and the second connection pattern BP2 may pass through the contact hole HL to be electrically connected to each other.

[0758] The third touch electrodes 131-11 to 131-22 may include a third sensor pattern SP3 disposed on the second conductive layer 102 and a third connection pattern BP3 disposed on the first conductive layer 101. The third sensor pattern SP3 and the third connection pattern BP3 may pass through the contact hole HL to be electrically connected to each other.

[0759] Figure 25 It indicates that the stylus is near. Figure 20 A diagram of an example of a touch sensing unit.

[0760] The stylus 10 may include a conductive tip 11, a resonant circuit section 12, a ground section 15, and a body section 17. Touch input from the stylus 10 near the touch sensor 261 can be sensed by the touch sensing section 260.

[0761] At least a portion of the conductive tip 11 is formed of a conductive material (e.g., metal, conductive rubber, conductive fabric, conductive silicon, etc.) and can be electrically connected to the resonant circuit section 12.

[0762] The resonant circuit section 12, as an LC resonant circuit, can resonate with the drive signal applied from at least one of the first drive / receiver section 2620 and the second drive / receiver section 2622 to all electrodes of at least one of the plurality of first touch electrodes 111-1 to 111-m and the plurality of second touch electrodes 121-1 to 121-n through the conductive tip 11.

[0763] The resonant signal generated by the resonant circuit section 12 in resonance with the drive signal can be output to the touch sensor 261 through the conductive tip 11. During and after the period when drive signals are applied to all electrodes of at least one of the plurality of first touch electrodes 111-1 to 111-m, the plurality of second touch electrodes 121-1 to 121-n, and the plurality of third touch electrodes 131-11 to 131-ab, the resonant signal caused by the resonance of the resonant circuit section 12 can be transmitted to the conductive tip 11. The resonant circuit section 12 is located within the main body 17 and can be electrically connected to the grounding section 15.

[0764] The stylus 10 in this manner can generate a resonant signal in response to a drive signal applied to at least one of the touch electrodes 111-1 to 111-m, 121-1 to 121-n, 131-11 to 131-ab, to generate touch input.

[0765] A capacitor Cx is formed by at least one of the touch electrodes 111-1 to 111-m, 121-1 to 121-n, 131-11 to 131-ab and the conductive tip 11 of the stylus 10. A driving signal is transmitted to the stylus 10 side through the capacitor Cx between at least one of the touch electrodes 111-1 to 111-m, 121-1 to 121-n, 131-11 to 131-ab and the conductive tip 11, and a resonant signal can be transmitted to the touch sensor 261 side.

[0766] The touch sensing unit 260 can detect touches from touch objects other than the stylus 10 that generates a resonant signal as described above (e.g., user's body parts (fingers, palms, etc.), passive or active styluses).

[0767] For example, the touch sensing unit 260 detects touches performed by a stylus that receives an input electrical signal and outputs it as a magnetic field signal. For example, the touch sensing unit 260 may also include a digitizer. The touch can be detected by detecting the magnetic field signal generated by the electromagnetic resonance (or electromagnetic induction) of the stylus. Alternatively, the touch sensing unit 260 detects touches performed by a stylus that receives an input magnetic field signal and outputs it as a magnetic field signal generated by resonance. For example, the touch sensing unit 260 may also include a coil that applies current as a drive signal and a digitizer. The stylus resonates with the magnetic field signal generated in the coil to which the current is applied. The touch can be detected by detecting the magnetic field signal generated by the electromagnetic resonance (or electromagnetic induction) of the stylus. Furthermore, the touch sensing unit 260 detects touches performed by a stylus that receives an input magnetic field signal and outputs a predetermined signal. The predetermined signal output from the stylus may be different from the signal generated by resonance with the resonant circuitry inside the stylus. For example, the predetermined signal may be a signal output from the active circuitry inside the stylus. The active circuit section can receive power from a battery that is charged by a signal generated by resonance in order to output the predetermined signal.

[0768] The control unit 2624 can control the driving of the touch sensing unit 260 and output touch coordinate information corresponding to the touch sensing results of the touch sensing unit 260.

[0769] Reference Figure 26 The touch sensing unit 260 including the antenna module according to this disclosure will be described.

[0770] Figure 26 This is a diagram that briefly illustrates a portion of a touch sensing unit according to one embodiment.

[0771] According to one embodiment, a touch sensing unit 260 includes a touch sensor 261, a loop coil 264, a coil driver 263 driving the loop coil 264, and a touch controller 262 controlling the touch sensor 261. The touch controller 262 may include a driving unit 2620 and a receiving unit 2622 that transmit and receive signals with the touch sensor 261, and a control unit 2624. Furthermore, although not shown separately in the drawings, the touch controller 262 may further include the coil driver 263 that applies a driving signal to the loop coil 264.

[0772] Touch sensor 261 may include a plurality of first touch electrodes 111-1 to 111-m for detecting touch coordinates in a first direction and a plurality of second touch electrodes 121-1 to 121-n for detecting touch coordinates in a second direction intersecting the first direction. For example, the plurality of first touch electrodes 111-1 to 111-m may have a shape extending along the second direction, and the plurality of second touch electrodes 121-1 to 121-n may have a shape extending along the first direction. Within touch sensor 261, the plurality of first touch electrodes 111-1 to 111-m may be arranged along the first direction, and the plurality of second touch electrodes 121-1 to 121-n may be arranged along the second direction.

[0773] The driving unit 2620 can apply driving signals to a plurality of first touch electrodes 111-1 to 111-m. The receiving unit 2622 can receive sensing signals from a plurality of second touch electrodes 121-1 to 121-n.

[0774] The above describes the implementation of the touch sensor 261 as a mutual capacitance method. However, the touch sensor 261 can also be implemented as a self-capacitance method. Ordinary technicians can easily modify, add new components, or omit some structural elements of the touch electrodes 111-1 to 111-m, 121-1 to 121-n, the driving unit 2620, and the receiving unit 2622 in the mutual capacitance method to make it suitable for the self-capacitance method.

[0775] Figure 27 This is a diagram that briefly illustrates a portion of a touch sensing unit 260 according to one embodiment.

[0776] According to one embodiment, a touch sensing unit 260 may include a touch sensor 261, a loop coil 264, a coil driver 263 driving the loop coil 264, and a touch controller 262 controlling the touch sensor 261. The touch controller 262 may include a drive / receiver unit 2620 and a drive / receiver unit 2622 that transmit and receive signals with the touch sensor 261, and a control unit 2624. Furthermore, the touch controller 262 may further include a coil driver 263 that applies a drive signal to the loop coil 264.

[0777] Touch sensor 261 may include a plurality of first touch electrodes 111-1 to 111-m for detecting touch coordinates in a first direction and a plurality of second touch electrodes 121-1 to 121-n for detecting touch coordinates in a second direction intersecting the first direction. For example, the plurality of first touch electrodes 111-1 to 111-m may have a shape extending along the second direction, and the plurality of second touch electrodes 121-1 to 121-n may have a shape extending along the first direction. Within touch sensor 261, the plurality of first touch electrodes 111-1 to 111-m may be arranged along the first direction, and the plurality of second touch electrodes 121-1 to 121-n may be arranged along the second direction.

[0778] The driving / receiving unit 2620 can apply a driving signal to at least one of the plurality of first touch electrodes 111-1 to 111-m, and receive a sensing signal from at least one of the plurality of first touch electrodes 111-1 to 111-m. The driving / receiving unit 2622 can apply a driving signal to at least one of the plurality of second touch electrodes 121-1 to 121-n, and receive a sensing signal from at least one of the plurality of second touch electrodes 121-1 to 121-n.

[0779] The above describes the implementation of the touch sensor 261 as a mutual capacitance method. However, the touch sensor 261 can also be implemented as a self-capacitance method. Ordinary technicians can easily modify the touch electrodes 111-1 to 111-m, 121-1 to 121-n, the driving unit 2620, and the receiving unit 2622 in the mutual capacitance method by appropriately modifying them, adding new components, or omitting some structural elements to make them suitable for the self-capacitance method.

[0780] In addition, the drive / receiver unit 2620 can be connected to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes to apply a drive signal, and the drive / receiver unit 2622 can be connected to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes to receive a sensing signal.

[0781] The coil driver 263 applies a drive signal to the toroidal coil 264. The drive signal may include a signal (e.g., a sine wave, a square wave, etc.) having a frequency corresponding to the resonant frequency of the resonant circuit section 12, and may be an AC voltage or AC current having a predetermined frequency. The frequency and magnitude of such a drive signal can be changed under the control of the control section 2624.

[0782] The control unit 2624 can demodulate the touch signals received from the drive / receive unit 2620 and the drive / receive unit 2622 to receive sensor input from the stylus 10.

[0783] Furthermore, the control unit 2624 can modulate the drive signal applied to the loop coil 264 so that the resonant signal frequency of the stylus 10 can be changed. At this time, the demodulation method of the touch signal at the control unit 2624 and the modulation method of the frequency change request drive signal can be performed using methods such as OOK (On / Off Keying), ASK (Amplitude Shift Keying), and FSK (Frequency Shift Keying). Similarly, the modulation method of the touch signal in the stylus 10 and the demodulation method of the frequency change request drive signal can be performed using methods such as OOK (On / Off Keying) and ASK (Amplitude Shift Keying).

[0784] Reference Figure 28 Come to Figure 1 The touch sensing unit 260 of the electronic device 2' illustrated in (b) will be described.

[0785] Figure 28 This is a diagram that briefly illustrates a portion of a touch sensing unit 260 according to one embodiment. Figure 28 The illustrated touch sensing unit 260 is compared to... Figure 26 The touch sensing unit 260 described herein includes a plurality of ring coils 264a and 264b. The plurality of ring coils 264a and 264b are located in areas other than the folding area FA including the folding axis AXIS_F. They are otherwise identical, so detailed descriptions of other structures are omitted.

[0786] The first ring coil 264a is located to the left of the folding axis AXIS_F, and the second ring coil 264b is located to the right of the folding axis AXIS_F. The first ring coil 264a and the second ring coil 264b are connected to the coil driver 263.

[0787] The coil driver 263 applies drive signals to the first ring coil 264a and the second ring coil 264b, respectively. The coil driver 263 can differentiate the application of drive signals based on the position of the stylus 10 on the touch screen 20. This will be explained later with reference to the accompanying drawings.

[0788] On the other hand, although Figure 28 The diagram shows two loop coils, but the number of loop coils can be increased depending on the number of folded regions. For example, if there are 2 folded regions, there can be 3 loop coils; if there are 3 folded regions, there can be 4 loop coils. As shown above, the number of loop coils can be obtained by adding 1 to the number of folded regions.

[0789] The following are Figure 1 The stylus 10 shown in the illustration will be explained.

[0790] Figure 29 (a) and (b) are diagrams showing how the stylus 10 is driven according to one embodiment and the touch screen 20 is driven according to two embodiments.

[0791] Reference Figure 29 In (a) and (b), the stylus 10 may include a conductive tip 11, a resonance circuit 12, a grounding portion 15, and a housing (e.g., a shell, frame, cover, etc.) 17.

[0792] The conductive tip 11 is electrically connected to the resonant circuit section 12. At least a portion of it may be formed of a conductive material (e.g., metal, conductive rubber, conductive fabric, conductive silicon, etc.), and is not limited thereto. Furthermore, the conductive tip 11 may have a shape in which it exists inside the non-conductive outer shell and a portion of the conductive tip 11 protrudes to the outside of the outer shell, and is not limited thereto.

[0793] At least a portion of the conductive tip 11 may be formed of a conductive material (e.g., metal, conductive rubber, conductive fabric, conductive silicon, etc.) and electrically connected to the resonant circuit section 12.

[0794] The resonant circuit section 12, acting as an LC resonant circuit, can resonate with the drive signal output from the touchscreen 20. As an LC resonant circuit, the resonant circuit section 12 can resonate via the conductive tip 11 with a drive signal applied from at least one of the first drive / receiver section 2620 and the second drive / receiver section 2622 to at least one of the plurality of first touch electrodes 111-1 to 111-m and the plurality of second touch electrodes 121-1 to 121-n. The drive signal can be a Tx signal transmitted to the touch electrode (channel). The drive signal can include a signal (e.g., a sine wave, square wave, etc.) having a frequency corresponding to the resonant frequency of the resonant circuit section 12. The resonant frequency of the stylus 10 is related to the design value of the resonant circuit section 12 of the stylus 10. For resonance to occur, the resonant frequency of the resonant circuit section 12 and the frequency of the drive signal must be the same or very close. When the touch electrode 21 generates an electric field based on the drive signal, the resonant circuit 12 of the stylus 10 resonates using the signal received through the change in the electric field.

[0795] The outer casing 17 can house the components of the stylus 10. The outer casing 17 can also be cylindrical, polygonal, a column with at least a curved surface, an entasis, a frustum of a pyramid, a circular truncated cone, etc., and its shape is not limited. The interior of the outer casing 17 is hollow, thus allowing the conductive tip 11, the resonant circuit section 12, and the grounding section 15 to be housed inside. Such an outer casing 17 can be made of a non-conductive material.

[0796] The resonant signal generated by the resonance between the resonant circuit section 12 and the drive signal can be output to the touch screen 20 through the conductive tip 11. During and after the drive signal is input to the touch electrode 21, the resonant signal generated by the resonance can be output to the touch screen 20 through the conductive tip 11. The resonant circuit section 12 is located inside the housing 17 and is electrically connected to the grounding section 15. The grounding section 15 can be grounded through the user's body or other contact with the outer surface of the housing 17.

[0797] The following is for reference Figure 30 The stylus 10 according to various embodiments will be described.

[0798] Figure 30 This diagram illustrates styluses according to several embodiments. Styluses 10a, 10b, 10c, 10d, and 10e each include a conductive tip 11 and a resonant circuit section 12.

[0799] Specifically, Figure 30 The stylus 10a of (a) includes a conductive tip 11 and a resonant circuit section 12 connected to the conductive tip 11.

[0800] Figure 30 The stylus 10b of (b) includes a conductive tip 11, a resonant circuit section 12 connected to the conductive tip 11, a rectifier 13 connected to the resonant circuit section 12, a storage device 14 connected to the rectifier 13, and an active circuit section 51 connected to the storage device 14. The active circuit section 51 is connected to the resonant circuit section 12.

[0801] Figure 30 The stylus 10c of (c) includes a conductive tip 11, a resonant circuit section 12, a battery 50 connected to the resonant circuit section 12, and an active touch module 60 connected to the battery 50. The active touch module 60 is connected to the conductive tip 11.

[0802] Figure 30The stylus 10d of (d) includes a conductive tip 11, an active touch module 60 connected to the conductive tip 11, a resonant circuit section 12 connected to the active touch module 60, and a battery 50 connected to the resonant circuit section 12. The battery 50 and the active touch module 60 are interconnected.

[0803] Figure 30 The stylus 10e of (e) includes a conductive tip 11, a resonant circuit section 12, and an active module 50. In addition, styluses 10a, 10b, 10c, 10d, and 10e may also include the following sensors and / or communication modules.

[0804] At least a portion of the conductive tip 11 may be formed of a conductive material (e.g., metal, conductive rubber, conductive fabric, conductive silicon, etc.), and is not limited thereto. The resonant circuit section 12, as an LC resonant circuit, is capable of resonating with the drive signal output from the loop coil 264. The resonant circuit section 12, as an LC resonant circuit, is capable of resonating with the drive signal output from the touchscreen 20. The drive signal may include a signal having a frequency corresponding to the resonant frequency of the resonant circuit section 12 (e.g., a sine wave, a square wave, etc.). The resonant frequencies of the styluses 10a, 10b, 10c, 10d, and 10e are related to the design values ​​of the resonant circuit section 12 of the styluses 10a, 10b, 10c, 10d, and 10e. For resonance to occur, the resonant frequency of the resonant circuit section 12 and the frequency of the drive signal must be the same or very close. If the loop coil 264 generates a magnetic field based on the driving signal or the touch sensor 261 generates an electric field based on the driving signal, the resonant circuit section 12 of the styluses 10a, 10b, 10c, 10d, and 10e resonates using the signals received through the changes in the magnetic field and / or electric field.

[0805] The components of the styluses 10a, 10b, 10c, 10d, and 10e can be housed within the outer casing. The casing can be cylindrical, polygonal, a column with at least a partially curved surface, an entasis, a frustum of a pyramid, a circular truncated cone, or any other shape. The casing is hollow, allowing for the internal housing of the styluse components 10a, 10b, 10c, 10d, and 10e, such as the conductive tip 11 and the resonant circuit section 12. This casing can be made of a non-conductive material.

[0806] Figure 30The stylus 10a illustrated in (a) may include a conductive tip 11 and a resonant circuit section 12 directly connected to the conductive tip 11. The resonant circuit section 12 resonates using energy transmitted from the loop coil 264, and the resonant energy is output directly through the conductive tip 11.

[0807] During the interval where a drive signal is input to the loop coil 264 and thereafter, a resonant signal caused by resonance can be output to the touchscreen 20 through the conductive tip 11. The resonant circuit section 12 is located inside the housing and is electrically connected to the ground section. The electronic device 2 can be used to sense touch input (direct touch or proximity touch) from a touch object. Figure 29 As shown, the touch input of the stylus 10, which is close to the touch sensor 261, can be sensed by the electronic device 2.

[0808] Figure 30 The stylus 10b illustrated in (b) includes a conductive tip 11, a resonant circuit section 12, a rectifier 13, a storage device 14, and an active circuit section 51. In addition, the stylus 10 may further include a sensor (not shown) and / or a communication module (not shown). The resonant circuit section 12 resonates using energy transmitted from the toroidal coil 264, and the resonant energy is transmitted to the active module 50. The resonant circuit section 12 resonates using energy transmitted from the toroidal coil 264, and the resonant energy can be rectified by the rectifier 13 to charge the storage device 14. The storage device 14 includes a rechargeable battery or a capacitor such as an EDLC (electric double-layered capacitor).

[0809] Figure 30 The active circuit section 51 of the stylus 10b illustrated in (b) can receive the magnitude, frequency, phase, etc. of the resonant signal transmitted to the touch screen 20 by power changes from the energy storage device 14. In addition, the active circuit section 51 can send additional signals other than touch input to the short-range communication module 212 of the electronic device 2.

[0810] Figure 30 The active module 50 of the stylus 10e illustrated in (e) can rectify and store the resonant energy. To store power, the active module 50 may include a rechargeable battery or a capacitor such as an EDLC (electric double-layered capacitor). Furthermore, the active module 50 may also include a DC / DC converter, etc.

[0811] The active module 50 may include sensors, communication units, etc. For example, the sensors may include at least one of the following: a pen pressure sensor for acquiring pressure changes caused by pressure applied to the conductive tip 11; an acceleration sensor for acquiring tilt changes of the stylus 10; a mechanical input unit (or mechanical keys, such as buttons, dome switches, dials, scroll wheels, etc. located on the back or side of the stylus 10); a proximity sensor; an illumination sensor; a touch sensor; a magnetic sensor; a gyroscope sensor; a motion sensor; an RGB sensor; an infrared sensor (IR sensor); a fingerprint sensor; an optical sensor (e.g., a camera); a microphone; a battery gauge; an environmental sensor (e.g., a barometer, hygrometer, thermometer, radiation sensor, thermal sensor, gas sensor, etc.); and a chemical sensor (e.g., an electronic nose, a health management sensor, a biometric sensor, etc.).

[0812] The communication unit can perform short-range wireless communication using at least one of the following technologies: Bluetooth™, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra-Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless Universal Serial Bus. The short-range communication method of the communication unit can be any other short-range communication protocol besides those described above, and is not limited to the above-described protocols.

[0813] Figure 30The styluses 10c and 10d illustrated in (c) and (d) may include a conductive tip 11, a resonant circuit section 12, a battery 50 connected to the resonant circuit section 12 and storing power, and an active touch module 60 connected to the conductive tip 11. The resonant circuit section 12 resonates using energy transmitted from the loop coil 264, and the resonant energy can be used to charge the battery 50. The active touch module 60 can receive power transmitted from the battery 50 and send signals to the touchscreen 20. The active module 50 can transmit electromagnetic signals to the touchscreen 20 using stored power, energy transmitted from the resonant circuit section 12, etc. Such an active touch module 60 may include an oscillator, etc., and can transmit electrical signals generated by the oscillator oscillating at a predetermined frequency to the touchscreen 20.

[0814] Reference Figures 31 to 35 The present invention describes a stylus, an electronic device, and an input system including the stylus according to one embodiment.

[0815] Figure 31 This figure illustrates a portion of a stylus and electronic device according to one embodiment. Descriptions of components identical to those described above are omitted below.

[0816] The active circuit section 51 may include a DC / DC converter 150, a battery 152, a sensor 154, and a controller 156. However, depending on the design, the DC / DC converter 150 and the battery 152 may not be included.

[0817] DC / DC converter 150 can boost or down-convert the power stored in the energy storage device 14 to supply a suitable charging voltage to the battery 152. In the absence of a battery 152 in the active circuit section 51, DC / DC converter 150 can supply the converted voltage as the operating voltage of controller 156.

[0818] The battery 152 can be charged using the voltage supplied from the DC / DC converter 150, and the charging voltage is supplied as the operating voltage of the controller 156. In the absence of the DC / DC converter 150 in the active circuit section 51, the battery 152 functions as a charging storage device 14.

[0819] Sensor 154 may include at least one of the following: a pen pressure sensor for acquiring pressure changes caused by pressure applied to the conductive tip 11; an acceleration sensor for acquiring tilt changes of the stylus 10; a mechanical input unit (or mechanical key, such as a button, dome switch, wheel, scroll wheel, etc. located on the back or side of the stylus 10); a proximity sensor; an illumination sensor; a touch sensor; a magnetic sensor; a gyroscope sensor; a motion sensor; an RGB sensor; an infrared sensor; a fingerprint sensor; an optical sensor (e.g., a camera); a microphone; a battery gauge; an environmental sensor (e.g., a barometer, hygrometer, thermometer, radiation sensor, thermal sensor, gas sensor, etc.); and a chemical sensor (e.g., an electronic nose, a health management sensor, a biometric sensor, etc.).

[0820] The controller 156 controls the overall movement of the stylus 10.

[0821] The controller 156 can control the magnitude of the resonant signal based on the input from the sensor 154, thereby transmitting the sensor input to the electronic device 2. The controller 154 can modulate the sensor input value in OOK or ASK mode by controlling the on / off states of switches SW0, SW1, and SW2 according to the input value from the sensor. Figure 31 The diagram shows three resistors connected in parallel to represent 4 bits, but may include more or fewer resistors. See following references. Figure 32 as well as Figure 33 This needs to be explained.

[0822] Figure 32 This is a flowchart illustrating the sensor input action of a stylus and an electronic device according to one embodiment. Figure 33 It shows the basis Figure 32 A waveform diagram of an example of the driving signal and the resonant signal.

[0823] like Figure 32As shown, the electronic device 2 transmits a drive signal to the stylus 10 (S00). The drive signal can charge the energy storage device 14 of the stylus 10. This step can be omitted if the energy storage device 14 is already fully charged.

[0824] Sensor 154 senses input (S10). Depending on the type of sensor 154, the input can be various.

[0825] The controller 156 modulates the resonant signal according to the sensed input (S12). The modulated resonant signal is then transmitted to the electronic device 2 (S14). Figure 33 As shown, the resonant signal obtained by ASK modulation can be transmitted to the second side of the electronic device.

[0826] Electronic device 2 demodulates the transmitted resonance signal to obtain the data sensed by sensor 154, and detects touch input through the resonance signal (S02). Hereinafter, the data transmitted to electronic device 2 according to the type of sensor 154 will be explained.

[0827] If sensor 154 is a pen pressure sensor and senses a hover state, controller 156 can change the magnitude of the resonant signal by controlling at least one of switches SW0, SW1, and SW2. As an example, controller 156 can connect the voltage of the first node N1 to the ground of battery 152 to interrupt the output of the resonant signal in the hover state. In this case, control unit 2624 can sense that the magnitude of the resonant signal received through touch electrode 21 is very small or that no resonant signal is received, and determine that there is no touch input from stylus 10. Alternatively, controller 156 can output data indicating a hover state as a resonant signal by using a signal modulation method based on the magnitude of the resonant signal. In this case, control unit 2624 can obtain data indicating a hover state by demodulating the resonant signal received through receiving unit 2622, and will not process the received resonant signal as touch input.

[0828] If sensor 154 is an accelerometer and senses a tilt angle, controller 156 can change the magnitude of the resonant signal by controlling at least one of switches SW0, SW1, and SW2. Controller 156 can output data representing the tilt angle as a resonant signal by using a signal modulation method that modulates the magnitude of the resonant signal. In this case, control unit 2624 can demodulate the resonant signal received by receiving unit 2622 to obtain data representing the tilt angle and adjust the touch area to correspond to the tilt angle. If the stylus 10 moves from the Z-axis (refer to...) Figure 5If the tilt angle is large, the control unit 2624 can be adjusted to have a larger touch area value than that associated with touch input via the resonance signal, thereby generating touch data.

[0829] If sensor 154 is a button or touch sensor and senses a user's button press or touch, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonant signal. Controller 156 can output data representing button press or touch input as a resonant signal by using a signal modulation method that modulates the magnitude of the resonant signal. In this case, control unit 2624 can demodulate the resonant signal received by receiving unit 2622 to obtain data representing button press or touch input and generate touch data representing button press or touch input. Electronic device 2 can use the touch data representing button press or touch input as user input received by electronic device 2 for processing. For example, if electronic device 2 also includes a camera, if touch data representing button press or touch input of stylus 10 is received, control unit 270 can perform an operation to capture an image using the camera. Furthermore, if electronic device 2 also includes a speaker, if touch data representing button press or touch input of stylus 10 is received, control unit 270 can control the volume of the sound output through the speaker or perform an operation to start or stop sound playback.

[0830] If sensor 154 is an illuminance sensor and senses ambient illuminance, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonant signal. Controller 156 can output data representing ambient illuminance as a resonant signal by using a signal modulation method that modulates the magnitude of the resonant signal. In this case, control unit 2624 can demodulate the resonant signal received by receiving unit 2622 to obtain data representing ambient illuminance and transmit it to control unit 270 or display controller 252. In this case, the grayscale of the image displayed on display panel 251 can be adjusted according to the ambient illuminance.

[0831] If sensor 154 is a magnetic sensor and senses the direction in which the stylus 10 is pointing, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonant signal. Controller 156 can output data representing the direction in which the stylus 10 is pointing as a resonant signal by using a signal modulation method that modulates the magnitude of the resonant signal. In this case, control unit 2624 can demodulate the resonant signal received by receiving unit 2622 to obtain data representing the direction in which the stylus 10 is pointing and transmit it to control unit 270. In this case, control unit 270 can display the direction in which the stylus 10 is pointing on display panel 251 using a compass image or the like. Control unit 270 can also generate signals to control other external devices located in the direction in which the stylus 10 is pointing. In this case, it is assumed that memory 220 stores the direction in which external devices are located relative to electronic device 2.

[0832] If sensor 154 is a gyroscope sensor or a motion sensor and senses the user's motion input, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonant signal. Controller 156 can output data representing the motion input as a resonant signal by using a signal modulation method that modulates the magnitude of the resonant signal. In this case, control unit 2624 can demodulate the resonant signal received by receiving unit 2622 to obtain data representing the motion input and transmit it to control unit 270. Thus, control unit 270 can perform corresponding operations based on the motion input.

[0833] If sensor 154 is an RGB sensor, a light sensor, or an infrared sensor and senses external light, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonant signal. Controller 156 can output data representing the hue, image, or infrared level of external light as a resonant signal by using a signal modulation method that utilizes the magnitude of the resonant signal. In this case, control unit 2624 can demodulate the resonant signal received by receiving unit 2622 to obtain data representing the hue, image, or infrared level of external light and transmit it to control unit 270. In this case, control unit 270 can perform corresponding operations based on the hue, image, or infrared level of external light.

[0834] If sensor 154 is a fingerprint sensor and senses the user's fingerprint input, controller 156 can compare the input fingerprint image with fingerprint images stored in the memory (not shown) of the active circuit section 51 to authenticate the user. Furthermore, if the user is already authenticated, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonance signal.

[0835] As an example, controller 156 connects the voltage of the first node N1 to the ground of battery 152 to interrupt the output of the resonant signal when an unauthenticated user uses the device. In this case, control unit 2624 can sense that the magnitude of the resonant signal received through touch electrode 21 is very small or that no resonant signal is received at all, and determine that there is no touch input from stylus 10. As another example, controller 156 can output data indicating the use of an unauthenticated user as a resonant signal by using a signal modulation method based on the magnitude of the resonant signal. In this case, control unit 2624 can demodulate the resonant signal received through receiving unit 2622 to obtain data indicating the use of an unauthenticated user, and will not process the received resonant signal as touch input.

[0836] If sensor 154 is a microphone and senses external sound, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. Controller 156 can output data representing the external sound as a resonance signal by using a signal modulation method that modulates the magnitude of the resonance signal. In this case, control unit 2624 can demodulate the resonance signal received by receiving unit 2622 to obtain data representing the external sound and transmit it to control unit 270. In this case, control unit 270 can perform corresponding operations based on the external sound.

[0837] If sensor 154 is a battery gauge and senses the state of charge (SOC, OCV, etc.) of battery 152, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonant signal. Controller 156 can output data representing the battery's state of charge as a resonant signal by using a signal modulation method that modulates the magnitude of the resonant signal. In this case, control unit 2624 can demodulate the resonant signal received by receiving unit 2622 to obtain data representing the state of charge of battery 152 and adjust the magnitude of the drive signal applied to loop coil 264. Control unit 2624 can decrease the magnitude of the drive signal when the battery 152 is fully charged. Control unit 2624 can increase the magnitude of the drive signal when the battery 152's state of charge is below a critical value.

[0838] If sensor 154 is a thermometer and senses the ambient temperature, controller 156 can control at least one of switches SW0, SW1, and SW2 to change the magnitude of the resonant signal. Controller 156 can output data representing the ambient temperature as a resonant signal by using a signal modulation method that modulates the magnitude of the resonant signal. At this time, controller 156 can also change the resonant frequency by controlling switch SW3. For example, controller 156 can control switch SW3 to increase the resonant frequency when the ambient temperature rises. Controller 156 can control switch SW3 to decrease the resonant frequency when the ambient temperature decreases. In this way, control unit 2624 can demodulate the resonant signal received by receiving unit 2622 to obtain data representing the ambient temperature and adjust the frequency of the drive signal applied to loop coil 264. Control unit 2624 can decrease the frequency of the drive signal when it determines that the temperature is rising. Control unit 2624 can decrease the magnitude of the drive signal when it determines that the temperature is rising.

[0839] In addition, the sensed data can be modulated using various data modulation methods according to the function of sensor 154 and transmitted to electronic device 2. In this case, control units 2624 and 270 can demodulate the received resonance signal to obtain sensor data and perform appropriate control accordingly.

[0840] Next, the controller 156 can demodulate the drive signal transmitted through the touch electrode 21 to change the resonant frequency of the resonant circuit section 12. (See following...) Figure 34 as well as Figure 35 This needs to be explained.

[0841] Figure 34 This is a flowchart illustrating the resonant frequency changing operation of a stylus and an electronic device according to one embodiment. Figure 35 It shows the basis Figure 34 A waveform diagram of an example of the driving signal and the resonant signal.

[0842] The electronic device 2 may be vulnerable to noise with a frequency similar to the resonant frequency of the resonant circuit section built into the stylus 10. Therefore, the control unit 2624 can change the driving frequency of the driving signal if the signal received from the receiving unit 2622 contains noise components with a frequency that is the same as or similar to the driving frequency of the current driving signal, or if only noise signals with the same as or similar to the driving frequency of the current driving signal are present.

[0843] like Figure 34As shown, the control unit 2624 transmits the resonant frequency change request signal to the stylus 10 (S20). The control unit 2624 can modulate the resonant frequency change request signal onto the drive signal and apply it to the touch electrode 21 before changing the drive frequency of the drive signal. Figure 35 As shown, the control unit 2624 can modulate the resonant frequency change request signal onto the drive signal using the ASK method and transmit it to the stylus 10 before changing the frequency f1 of the drive signal to the frequency f2.

[0844] The controller 156 demodulates the drive signal transmitted through the touch electrode 21 to determine whether a frequency change request signal has been received (S30).

[0845] If a frequency change request is received, the controller 156 controls the switch SW3 to change the resonant frequency of the resonant circuit section 12 (S32). The stylus 10 then transmits the resonant signal to the electronic device 2 (S34). If the resonant frequency changes while the drive frequency of the drive signal remains unchanged, the magnitude of the resonant signal can be reduced.

[0846] If the resonant frequency of the resonant circuit section 12 changes, the control section 2624 changes the frequency of the drive signal to the changed resonant frequency and detects touch input (S22). See again... Figure 35 At time T1, the control unit 2624 changes the drive frequency of the drive signal to f2. Here, the changed resonant frequency of the resonant circuit unit 12 can be a preset frequency. On the other hand, the controller 156 can output data indicating a change in resonant frequency as a resonant signal by using a signal modulation method based on the magnitude of the resonant signal so that the control unit 2624 can confirm that the resonant frequency has changed. Alternatively, the control unit 2624 can determine that the resonant frequency has changed if the magnitude of the resonant signal received after the control unit 2624 transmits the frequency change request signal decreases, or if a predetermined time has elapsed since the frequency change request signal was transmitted.

[0847] Next, refer to Figures 36 to 38 A stylus, an electronic device, and an input system including the stylus according to another embodiment will be described.

[0848] Figure 36 This is a diagram illustrating a portion of a stylus and electronic device according to one embodiment. Hereinafter, components identical to those described above will be omitted.

[0849] like Figure 36 As shown, the stylus 10 also includes a communication unit 158 ​​capable of communicating with external communication modules such as 212.

[0850] The communication unit 158 ​​can perform short-range wireless communication using at least one of the following technologies: Bluetooth™, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra-Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless Universal Serial Bus. The short-range communication method of the communication unit 158 ​​can be any other short-range communication protocol besides those described above, and is not limited to the above-described protocols.

[0851] The controller 156 can transmit the input from the sensor 154 to the electronic device 2 via the communication unit 158. (The following is in conjunction with...) Figure 37 Please provide an explanation.

[0852] Figure 37 This is a flowchart illustrating sensor input operations of a stylus and electronic device according to another embodiment.

[0853] As shown in the figure, the electronic device 2 transmits a drive signal to the stylus 10 (S40). The drive signal can charge the energy storage device 14 of the stylus 10. This step can be omitted if the energy storage device 14 is already fully charged.

[0854] Sensor 154 senses input (S50). Depending on the type of sensor 154, the input can be various.

[0855] The controller 156 generates a sensing signal based on the sensed input (S52). Then, the generated sensing signal is transmitted to the electronic device 2 (S54).

[0856] Electronic device 2 receives the transmitted communication signal to obtain the data sensed by sensor 154 (S42).

[0857] Alternatively, the stylus 10 transmits a resonant signal based on the driving signal to the electronic device 2 (S56), and the electronic device 2 detects touch input through the resonant signal (S44).

[0858] Next, the controller 156 can demodulate the drive signal transmitted through the touch electrode 21 to change the resonant frequency of the resonant circuit section 12. The following is in conjunction with... Figure 38 Please provide an explanation.

[0859] Figure 38 This is a flowchart illustrating the resonant frequency change operation of a stylus and electronic device according to another embodiment.

[0860] As shown in the figure, the control unit 2624 transmits the resonant frequency change request signal to the stylus 10 via the short-range communication module 212 (S60). The control unit 2624 can transmit the resonant frequency change request signal to the stylus 10 before changing the driving frequency of the driving signal.

[0861] If a resonant frequency change request signal is received via communication unit 158, controller 156 controls switch SW3 to change the resonant frequency of resonant circuit section 12 (S70). In the event of a resonant frequency change, communication unit 158 ​​can transmit data indicating that the resonant frequency has changed to proximity communication module 212, or data indicating the time when the resonant frequency will change to proximity communication module 212. Furthermore, stylus 10 transmits the changed resonant signal to electronic device 2 (S72).

[0862] If the resonant frequency of the resonant circuit section 12 is changed, the control section 2624 changes the frequency of the drive signal to the changed resonant frequency and detects touch input (S62). The control section 2624 can determine that the resonant frequency has changed if the magnitude of the resonant signal received after the control section 2624 transmits the frequency change request signal decreases, or if a predetermined time has elapsed since the frequency change request signal was transmitted.

[0863] Figure 39 (a) is a diagram showing the state of the stylus approaching the electronic device. Figure 39 (b) is a simplified circuit diagram of the stylus and electronic device. Figure 40 (a) and (b) are diagrams showing the state of a stylus approaching an electronic device to transmit and receive signals.

[0864] like Figure 39 As shown in (a), the stylus 10 and the touchscreen 20 can be brought close to each other.

[0865] In this way, the stylus 10 can generate a resonant signal in response to the driving signal applied to the touch electrode 21 to generate touch input.

[0866] The touch screen 20 includes a display panel 251 and a touch sensor 261 on the display panel 251. The touch sensor 261 may include a substrate 23, touch electrodes 21 on the substrate, and a window 22 on the touch electrodes 21.

[0867] The substrate 23 may be the encapsulation substrate of the display panel 251, and it is preferably made of a transparent material.

[0868] The touch electrode 21 may include a plurality of first touch electrodes having a shape extending along a first direction and arranged along a second direction intersecting the first direction, and a plurality of second touch electrodes having a shape extending along the second direction and arranged along the first direction.

[0869] exist Figure 39 In (a), the touch electrode 21 is illustrated as a layer, but the first touch electrode and the second touch electrode may also be located in different layers, and are not limited thereto.

[0870] A capacitance Cx is formed between at least one of the touch electrodes 111-1 to 111-m, 121-1 to 121-n and the conductive tip 11 of the stylus 10. The driving signal applied to the touch sensor 261 can be transmitted to the stylus 10 side through the capacitance Cx between at least one of the touch electrodes 111-1 to 111-m, 121-1 to 121-n and the conductive tip 11, and the resonant signal can be transmitted to the touch sensor 261 side.

[0871] The touch sensing unit 260 is capable of detecting touches from touch objects other than the stylus 10 that generates a resonant signal as described above (e.g., the user's body parts (fingers, palms, etc.), or styluses used in a passive or active manner), and is not limited to these.

[0872] For example, the touch sensing unit 260 can detect touches performed by a stylus that receives an input electrical signal and outputs a magnetic field signal. Furthermore, for example, the touch sensing unit 260 can also detect touches performed by a stylus that receives an input magnetic field signal and outputs a magnetic field signal generated by resonance. For example, the electronic device 2 may also include a digitizer. The magnetic field signal obtained through electromagnetic resonance (or electromagnetic induction) of the stylus is detected by the digitizer, thereby enabling touch detection.

[0873] like Figure 39 As shown in (b), Figure 39 The stylus 10 of (a) can be represented by an equivalent circuit including resistor R1, inductor L1 and capacitor C1.

[0874] A drive signal 30 with a predetermined frequency is transmitted to the stylus 10 via the touch electrode 21 through the capacitor Cx. At this time, the resonant circuit section 12 of the stylus 10, which includes the inductor L1 and the capacitor C1, can resonate with the drive signal 30.

[0875] like Figure 40 As shown in (a), the drive signal DS from the touch electrode 21 can also be transmitted to the conductive tip 11 when the stylus 10 is not in direct contact with the window 22 (i.e., in the hovering state).

[0876] Similarly, Figure 40 As shown in (b), the resonant signal RS can be transmitted from the conductive tip 11 through the atmosphere or the non-conductive housing 19 to the touch electrode 21 side.

[0877] Next, refer to Figure 41 as well as Figure 42 The signal transmission and reception between the electronic device 2 and the stylus 10 are explained.

[0878] Figure 41 This is an equivalent circuit diagram of an electronic device that shows a stylus and output drive signals. Figure 42 This is an equivalent circuit diagram showing a stylus and an electronic device that receives sensing signals.

[0879] like Figure 41 As shown, the stylus 10 can be represented by an equivalent circuit including a resistor R1, an inductor L1, and a capacitor C1. At least one of the first drive / receiver unit 2620 and the second drive / receiver unit 2622 applies a drive signal DS to the touch sensor 261. The drive signal DS is transmitted to the resonant circuit unit 12 through the capacitance Cx formed between the touch sensor 261 and the stylus 10, i.e., between the touch electrodes 111 and / or 121 and the conductive tip 11. At this time, the resonant circuit unit 12 of the stylus 10, including the inductor L1 and the capacitor C1, can resonate with the drive signal DS. For resonance to occur, the resonant frequency of the resonant circuit unit 12 and the frequency of the drive signal DS must be the same or very close.

[0880] Next, refer to Figure 42 The touch sensor 261 that receives signals from the stylus 10 will be described.

[0881] Figure 42 This is an equivalent circuit diagram showing the stylus and the touch sensor that receives the sensing signals.

[0882] like Figure 42 As shown in (a), the resonant signal RS of the resonant circuit section 12 is transmitted to at least one of the first drive / receiver section 2620 and the second drive / receiver section 2622 through the capacitor Cx. At least one of the first drive / receiver section 2620 and the second drive / receiver section 2622 includes an amplification section 2626.

[0883] A first voltage Vcc can be applied to the first power input terminal of the amplifier 2626, and a second voltage GND can be applied to the second power input terminal. The amplifier 2626 can use the voltage difference between the first voltage Vcc and the second voltage GND to amplify or differentially amplify and output the resonant signal RS input to at least one of the two input terminals.

[0884] like Figure 42 As shown in (b), noise NS1 can flow in from outside the touch sensor 261, or noise NS2 can flow in through the second power input terminal of the amplification unit 2626. At this time, through the drive signal ( Figures 12 to 17 The resonant signal RS generated by (30) has the same or very similar frequency as the driving signal 30. Furthermore, the noises NS1 and NS2 have the same or similar frequencies as the resonant signal RS.

[0885] Noise NS1 can be transmitted to the input terminal of the amplifier section 2626 that transmits the resonant signal RS, or noise NS1 can be transmitted to the input terminal of the amplifier section 2626 that does not transmit the resonant signal RS, or noise NS1 can be transmitted to the two input terminals of the amplifier section 2626 at different magnitudes. Therefore, there is a problem that the signal output from the amplifier section 2626 has noise.

[0886] Furthermore, the noise NS2 is transmitted to the second power input terminal of the amplifier 2626. Since the amplifier 2626 uses the voltage difference between the first voltage Vcc and the noise NS2 to amplify or differentially amplify the resonant signal RS, there is a problem that the signal output from the amplifier 2626 has noise.

[0887] As described above, if noise NS1 and NS2, which are similar to the drive signal 30 (or resonant signal RS), are input to the touch sensor 261, the touch sensor 261 will have difficulty accurately detecting the touch input of the stylus 10. For an active stylus, when noise NS1 and NS2 flow into the touch sensor 261, noise is avoided by frequency hopping, which changes the frequency of the signal sent from the active stylus. However, for a passive stylus, the response from the touch sensor 261 based on the drive signal DS is transmitted to the touch sensor 261 as a sensing signal, making such frequency hopping difficult to implement. For example, the touch sensing unit 260 may also include a coil to which a current is applied as a drive signal and a digitizer. The stylus resonates with the magnetic field signal generated by the coil to which the current is applied. The touch of the stylus can be detected by detecting the magnetic field signal obtained by electromagnetic resonance (or electromagnetic induction) through the digitizer.

[0888] Figures 43 to 47 This is a diagram showing the state of a stylus near an electronic device.

[0889] like Figures 43 to 47 As shown, the stylus 10 and the touchscreen 20 can be brought close to each other.

[0890] Figures 43 to 47 The stylus 10 can resonate with the driving signal applied to the touch electrode 21 to generate touch input (resonance signal or active touch signal).

[0891] Figures 43 to 47The touch screen 20 includes a display panel 251 and a touch sensor 261 on the display panel 251. The touch sensor 261 may include a substrate 23, touch electrodes 21 on the substrate, and a window 22 on the touch electrodes 21.

[0892] The substrate 23 may be the encapsulation substrate of the display panel 251, and it is preferably made of a transparent material.

[0893] Touch electrode 21 includes a plurality of first touch electrodes for detecting touch coordinates in a first direction and a plurality of second touch electrodes for detecting touch coordinates in a second direction intersecting the first direction. For example, touch electrode 21 may include a plurality of first touch electrodes having a shape extending along the second direction and a plurality of second touch electrodes having a shape extending along the first direction intersecting the second direction. The plurality of first touch electrodes may be arranged along the first direction, and the plurality of second touch electrodes may be arranged along the second direction. In the accompanying drawings, touch electrode 21 is illustrated as a single layer, but the first and second touch electrodes may also be located in different layers, and the invention is not limited thereto.

[0894] The touch electrode 21 may have a window 22. The touch electrode 21, the conductive tip 11, and the window 22 can form a capacitor Cx. Therefore, the signal generated by the stylus 10 (resonance signal or active touch signal) can be transmitted to the touch electrode 21.

[0895] like Figures 43 to 47 As shown, the resonant circuit section 12 can resonate with the loop coil 264, and the degree of mutual resonance between the inductor of the resonant circuit section 12 and the loop coil 264 is affected by the mutual inductance M. Alternatively, the resonant circuit section 12 can resonate with the magnetic field generated by the loop coil 264.

[0896] like Figure 43 , Figure 44 as well as Figure 45 As shown, the loop coil 264 can be located in an area that does not overlap with the touch sensor 261.

[0897] Reference Figure 43 The loop coil 264 can be printed on the window 22 by photolithography, thin film deposition or other methods, or printed on a sheet by photolithography, thin film deposition or other methods to be attached to the window 22. However, the methods for setting the loop coil 264 on the window 22 are not limited to the above description.

[0898] Figure 44This diagram shows the configuration of the ring coil 264 located on the same layer as the touch electrode 21 in the case of an on-cell (external) type touch sensor. Figure 45 This is a diagram showing the configuration of the annular coil 264 located on the same layer as the touch electrode 21 in the case of an in-cell type touch sensor.

[0899] Reference Figure 44 as well as Figure 45 The loop coil 264 can be located on the same layer as the touch electrode 21. The loop coil 264 and the touch electrode 21 can be made of the same material. However, the loop coil 264 and the touch electrode 21 can be located on different layers and can be made of different materials.

[0900] exist Figure 44 In the display panel 251, the ring coil 264 and the touch electrode 21 are located on the same layer on the encapsulation substrate 23.

[0901] exist Figure 45 In this display panel 251, touch electrodes 21 and a ring coil 264 are included. That is, the substrate 23 can be the color filter substrate of the display panel 251, and the touch electrodes 21 and the ring coil 264 can be located between the color filter substrate 23 and the TFT substrate of the display panel 251. Alternatively, the touch electrodes 21 and the ring coil 264 can all be located on the upper and lower parts of the color filter substrate 23.

[0902] like Figure 46 as well as Figure 47 As shown, the loop coil 264 can be located in the area overlapping with the touch sensor 261. The loop coil 264 can be directly printed on the substrate of the display panel 251 by methods such as photolithography or thin film deposition, or it can be printed on a sheet by methods such as photolithography or thin film deposition and then attached to the substrate of the display panel 251. The methods for setting the loop coil 264 on the substrate of the display panel 251 are not limited to those described above.

[0903] like Figure 46 As shown, the loop coil 264 can be located on or near the outer contour (or edge region) of the touch sensor 261, which is a partial area of ​​the touch sensor 261, or as... Figure 47 As shown, the loop coil 264 can be configured to correspond to the entire area of ​​the touch sensor 261.

[0904] The loop coil 264 and the touch electrode 21 can be located on different layers. However, as... Figure 44 as well as Figure 45As shown, the loop coil 264 can be located in the same layer as the touch electrode 21 in the area overlapping with the touch sensor 261, and can be made of the same material.

[0905] Reference Figures 48 to 53 Examples of stylus and electronic device signal transmission and reception are given.

[0906] Figures 48 to 53 This is a simplified circuit diagram illustrating a stylus and an electronic device.

[0907] Reference Figure 48 as well as Figure 49 The resonant circuit section 12 can be represented by an equivalent circuit including resistor Rp, inductor Lp and capacitor Cp or an equivalent circuit including resistor Rs, inductor Ls and capacitor Cs.

[0908] like Figure 48 as well as Figure 49 As shown, if the loop coil Ld forms a magnetic field through the driving signal applied by the power supply 40, the inductor Lp of the stylus 10 will generate a current, thereby enabling the resonant circuit section 12 to resonate.

[0909] The resonant circuit 12 can resonate even when the stylus 10 is not in direct contact with the window 22 (i.e., in the hovering state) through the magnetic field generated in the loop coil Ld.

[0910] like Figures 50 to 53 As shown, when the loop coil and the internal capacitor resonate with the drive signal applied by the power supply 40, the resonant circuit section 12 of the stylus 10 can also resonate with the loop coil and the internal capacitor.

[0911] Figure 50 The diagram shows the toroidal coil Ldp and the internal capacitor Cdp connected in parallel, and the resistor Rp, inductor Lp, and capacitor Cp of the resonant circuit section 12 connected in parallel.

[0912] Figure 51 The diagram shows the toroidal coil Ldp and the internal capacitor Cdp connected in parallel, and the resistor Rs, inductor Ls, and capacitor Cs of the resonant circuit section 12 connected in series.

[0913] Figure 52 The diagram shows the toroidal coil Lds and the internal capacitor Cds connected in series, and the resistor Rp, inductor Lp, and capacitor Cp of the resonant circuit section 12 connected in parallel.

[0914] Figure 53 The diagram shows the toroidal coil Lds and the internal capacitor Cds connected in series, and the resistor Rs, inductor Ls and capacitor Cs of the resonant circuit section 12 connected in series.

[0915] The resonant circuit 12 can resonate with the loop coil Lds or Ldp even when the stylus 10 is not in direct contact with the window 22 (i.e., in the hovering state).

[0916] according to Figures 48 to 53 The circuit diagram shown illustrates that when a drive signal is applied to the loop coils Ld, Ldp, and Lds included in the electronic device, the resonant circuit section 12 of the stylus 10 resonates and generates a resonant signal. The generated resonant signal can be sensed by a touch sensor equipped on the electronic device side.

[0917] Figures 54 to 59 This is another circuit diagram that briefly illustrates a stylus and an electronic device.

[0918] Reference Figure 54 as well as Figure 55 The resonant circuit section 12 can be represented by an equivalent circuit including resistor Rp, inductor Lp and capacitor Cp or an equivalent circuit including resistor Rs, inductor Ls and capacitor Cs.

[0919] like Figure 54 as well as Figure 55 As shown, if the loop coil Ld forms a magnetic field through the drive signal 40, the inductor Lp of the stylus 10 will generate a current, thereby enabling the resonant circuit section 12 to resonate.

[0920] The voltage resonating in the resonant circuit section 12 can be rectified by the rectifier 13 and stored in the energy storage device 14. At this time, the power stored in the energy storage device 14 can be used to drive the active circuit section 51.

[0921] like Figures 56 to 59 As shown, if the loop coil and the internal capacitor resonate through the drive signal 40, the resonant circuit section 12 of the stylus 10 can also resonate with the loop coil and the internal capacitor.

[0922] Figure 56 This illustrates the case where the toroidal coil Ldp and the internal capacitor Cdp are connected in parallel, and the resistor Rp, inductor Lp, and capacitor Cp of the resonant circuit section 12 are connected in parallel.

[0923] Figure 57 The diagram shows the toroidal coil Ldp and the internal capacitor Cdp connected in parallel, and the resistor Rs, inductor Ls, and capacitor Cs of the resonant circuit section 12 connected in series.

[0924] Figure 58 The diagram shows the toroidal coil Lds and the internal capacitor Cds connected in series, and the resistor Rp, inductor Lp, and capacitor Cp of the resonant circuit section 12 connected in parallel.

[0925] Figure 59 The diagram shows the toroidal coil Lds and the internal capacitor Cds connected in series, and the resistor Rs, inductor Ls and capacitor Cs of the resonant circuit section 12 connected in series.

[0926] according to Figures 54 to 59 The circuit diagram shown illustrates that when a drive signal is applied to the loop coils Ld, Ldp, and Lds included in the electronic device, the resonant circuit section 12 of the stylus 10 resonates and generates a resonant signal. The generated resonant signal is stored in a storage device inside the stylus 10, and the active circuit section can output a predetermined signal using the power stored in the storage device. The predetermined signal output can be sensed by a touch sensor equipped on the electronic device side.

[0927] Figure 60 as well as Figure 61 This is a diagram showing the state of a stylus approaching an electronic device to transmit and receive signals.

[0928] like Figure 60 As shown, if a driving signal is applied to the loop coil 264, the resonant circuit 12 will resonate through the magnetic field B it generates. At this time, as... Figure 61 As shown, the signal RS from the stylus 10 can be transmitted directly from the conductive tip 11 to the touch electrode 21, or it can be transmitted to the touch electrode 21 through the atmosphere or a non-conductive casing. The resonant circuit section 12 of the stylus can resonate by receiving energy transmitted from the loop coil 264 using the magnetic field generated by the drive signal of a predetermined frequency applied by the power supply 40. At this time, the stylus can use the resonant energy to transmit a touch input signal to the touch sensor 261. For example, Figure 30 The styluses 10a and 10b of (a) and (b) can transmit the signal resonating in the resonant circuit section 12 as a touch input to the touch sensor 261. Figure 30 The active touch module 60 of the styluses 10c, 10d, and 10e (c), (d), and (e) can generate a signal using the power generated by the signal resonating in the resonant circuit section 12 and transmit it to the touch sensor 261.

[0929] Reference Figure 62 as well as Figure 63 An example of a stylus and an electronic device transmitting and receiving signals according to one embodiment will be described.

[0930] Figure 62 as well as Figure 63 This is another circuit diagram that briefly illustrates a stylus and an electronic device.

[0931] Reference Figure 62 as well as Figure 63The resonant circuit section 12 can be represented by an equivalent circuit including resistor Rp, inductor Lp and capacitor Cp or an equivalent circuit including resistor Rs, inductor Ls and capacitor Cs.

[0932] like Figure 62 as well as Figure 63 As shown, if the loop coil and the internal capacitor resonate through the power supply 40 that transmits the drive signal, the resonant circuit section 12 of the stylus 10 can also resonate with the loop coil and the internal capacitor.

[0933] Figure 62 The diagram shows the toroidal coil Ldp and the internal capacitor Cdp connected in parallel, and the resistor Rp, inductor Lp, and capacitor Cp of the resonant circuit section 12 connected in parallel.

[0934] Figure 63 The diagram shows the toroidal coil Ldp and the internal capacitor Cdp connected in parallel, and the resistor Rs, inductor Ls, and capacitor Cs of the resonant circuit section 12 connected in series.

[0935] exist Figure 62 as well as Figure 63 In the case where the blocking capacitor Cb is not connected in series with the resonant circuit 42, the magnetic field generated by the driving signal is as follows.

[0936] [Mathematical Expression 1]

[0937]

[0938] The change in the magnetic field generated by the resonant circuit 42 is shown in the following mathematical formula 2, which generates an induced electromotive force.

[0939] [Mathematical Expression 2]

[0940]

[0941] Referring to Equation 1, when inducing a magnetic field based on an electric field, both alternating current and direct current contribute to the induction of the magnetic field. However, as shown in Equation 2, when inducing an electric field based on a magnetic field, the electric field is induced only through the time-varying magnetic field. Therefore, although the DC component of the current J in Equation 1 does not contribute to the induced electromotive force of the resonant circuit section 12, it still consumes electrical energy.

[0942] Therefore, the flow of DC current in the resonant circuit 42 can be prevented by connecting the blocking capacitor Cb in series with the resonant circuit 42, as shown in the following mathematical formula 3.

[0943] [Mathematical Expression 3]

[0944]

[0945] This reduces the power consumption caused by the resonant circuit 42.

[0946] Next, refer to Figure 64 An example of an electronic device 2 according to one embodiment, including a ring coil 264 and a coil drive unit 263, will be described.

[0947] Figure 64 This is a diagram illustrating an antenna module and ...

Claims

1. An electronic device, wherein, include: OLED display panel, which includes a packaging substrate; A touch electrode layer is formed directly on the encapsulation substrate of the OLED display panel, and includes at least one touch electrode; Conductive wiring is formed directly on the encapsulation substrate of the OLED display panel and is disposed on the same layer as the touch electrode layer to generate a magnetic field signal for driving the stylus. A magnetic field shielding sheet is disposed below the OLED display panel and is configured to overlap with the conductive wiring; as well as A touch controller configured to sense the position of the stylus on the OLED display panel. The conductive wiring is formed of the same material as the at least one touch electrode.

2. The electronic device according to claim 1, wherein: The touch controller is configured to apply a drive signal to at least one of the two ends of the conductive wiring.

3. The electronic device according to claim 1, wherein: The conductive wiring has a shape that extends along the boundary of the display area of ​​the OLED display panel.

4. The electronic device according to claim 2, wherein: The touch controller is configured to apply a first drive signal and a second drive signal to both ends of the conductive wiring, respectively; The first driving signal and the second driving signal are out of phase.

5. The electronic device according to claim 1, wherein: The OLED display panel includes at least one folded area. The folded region is composed of at least a portion of a curved surface with a predetermined curvature when the OLED display panel is folded. The conductive wiring has a shape that extends along the boundary of the display area of ​​the OLED display panel.

6. The electronic device according to claim 1, wherein: The OLED display panel includes at least one folded area. The folded area is formed by at least a portion of a curved surface with a predetermined curvature when the OLED display panel is in a folded state. The magnetic field shielding sheet is disposed below the OLED display panel in a first region and a second region separated with reference to the folded region.

7. The electronic device according to claim 1, wherein: The OLED display panel includes at least one folded region, which is formed by at least a portion of a curved surface with a predetermined curvature when the OLED display panel is in a folded state. The conductive wiring includes a first conductive wiring and a second conductive wiring respectively arranged on both sides with reference to the folded area. The first conductive wiring and the second conductive wiring have a shape that extends along the boundary between the display area and the folded area of ​​the OLED display panel.

8. The electronic device according to claim 7, wherein, The magnetic field shielding sheet includes: A first magnetic field shielding sheet is disposed below the OLED display panel and configured to overlap with the first conductive wiring; and A second magnetic field shielding sheet is disposed below the OLED display panel and is configured to overlap with the second conductive wiring. The first magnetic field shielding sheet is disposed below the OLED display panel in a first region separated from the folded region. The second magnetic field shielding sheet is disposed below the OLED display panel in a second region separated from the folded region.

9. The electronic device according to claim 8, wherein: When the stylus is positioned on the folded area, the touch controller applies a drive signal with the same phase to the first conductive wiring and the second conductive wiring.

10. The electronic device according to claim 1, wherein: The touch controller is configured to apply a drive signal to the touch electrodes to cause the stylus to resonate.

11. The electronic device according to claim 1, wherein: The touch electrode includes a first touch electrode and a second touch electrode; Either the first touch electrode or the second touch electrode senses the electronic signal output from the stylus.

12. The electronic device according to claim 1, wherein: The touch electrode includes a first touch electrode and a second touch electrode; Either the first touch electrode or the second touch electrode senses a signal generated through electronic interaction with the stylus.

13. An electronic device, wherein, include: OLED display panel, which includes a packaging substrate; A touch electrode layer is disposed directly on the top of the encapsulation substrate of the OLED display panel, and includes at least one touch electrode; Conductive wiring is directly disposed on the top of the encapsulation substrate of the OLED display panel, and is disposed on the same layer as the touch electrode layer to generate a magnetic field signal for driving the stylus. A magnetic field shielding sheet is disposed below the OLED display panel and is configured to overlap with the conductive wiring; as well as A touch controller configured to sense the position of the stylus on the OLED display panel. The OLED display panel includes at least one folded area; The folded area is formed by at least a portion of a curved surface with a predetermined curvature when the OLED display panel is in a folded state. The magnetic field shielding sheet is disposed below the OLED display panel in a first region and a second region separated with reference to the folded region.

14. The electronic device according to claim 13, wherein: The touch controller is configured to apply a drive signal to the touch electrodes to cause the stylus to resonate.

15. The electronic device according to claim 13, wherein: The touch electrode includes a first touch electrode and a second touch electrode; Either the first touch electrode or the second touch electrode senses the electronic signal output from the stylus.

16. The electronic device according to claim 13, wherein: The touch electrode includes a first touch electrode and a second touch electrode; Either the first touch electrode or the second touch electrode senses a signal generated through electronic interaction with the stylus.

Images