Electronic device, stylus pen, and driving and control method thereof

Abstract

To provide a capacitive resonant stylus pen capable of generating a sufficient output signal.SOLUTION: An electronic device according to an embodiment includes: a display panel; a touch electrode layer disposed on the display panel and comprising at least one or more touch electrodes; and a conductive wire disposed on the display panel, disposed on the same layer as the touch electrode layer, and generating a magnetic field signal for driving a stylus pen.SELECTED DRAWING: Figure 95

Description

[Technical Field]

[0001] The present invention relates to an electronic device, a stylus pen, and a method for driving and controlling the same. [Background technology]

[0002] A variety of electronic devices, such as mobile phones, smartphones, tablet PCs, laptop computers, digital broadcasting terminals, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), and navigation systems, are equipped with touch sensors.

[0003] In such electronic devices, touch sensors may be located on a display panel that displays images or on a region of the body of the electronic device, allowing a user to interact with the electronic device by touching the touch sensors, thereby providing the user with an intuitive user interface.

[0004] A user can use a stylus pen for precise touch input. Such a stylus pen can transmit and receive signals to and from a touch sensor via electrical and / or magnetic methods. In the case of a passive stylus pen, the stylus pen resonates with a drive signal applied to the touch sensor to generate a signal, and the touch sensor receives the resonant signal from the stylus pen to detect the touch position.

[0005] In the case of a passive stylus pen, the stylus pen resonates with a drive signal applied to a touch sensor to generate a signal, and the touch sensor receives the resonant signal from the stylus pen to detect the touch position. However, when such a passive stylus pen touches the touch sensor simultaneously with a conductive object such as a human body, a problem occurs in that the touch sensor cannot detect the touch of the stylus pen depending on the position or touch area of ​​the conductive object.

[0006] Noise may exist in electronic devices for various reasons, and such noise may act as a factor that degrades the sensing performance of the electronic device. In particular, in the case of a stylus pen, if noise exists in a frequency band similar to the resonant frequency of the stylus pen, the accuracy of touch sensing may be significantly reduced.

[0007] Demand for electronic devices having larger display screens while maintaining the same or smaller volume or thickness has increased, and foldable or bendable display devices that can be folded or unfolded to provide larger screens only when in use have also been developed.

[0008] Conventionally, an amplifier corresponding to each touch electrode is provided in the touch sensor to receive a sensing signal from the touch electrode included in the touch sensor.

[0009] Meanwhile, stylus pens can be used for precise touch input on electronic devices with large screens. Stylus pens can be classified into active stylus pens and passive stylus pens depending on whether they contain a battery and electronic components.

[0010] Active stylus pens have the advantage of being superior in basic performance compared to passive stylus pens and offering additional functions (pressure, hovering, buttons), but they have the disadvantage of being difficult to use while charging the battery, the pen itself is expensive, and it requires a power source and a battery to charge, so they are not widely used except by some advanced users.

[0011] Passive stylus pens have the advantages of being less expensive and not requiring batteries compared to active stylus pens, but have the disadvantage of being less capable of precise touch recognition compared to active stylus pens. Recently, in order to realize passive stylus pens capable of precise touch recognition, technologies such as the electromagnetic resonance (EMR) method, which is an inductive resonance method, and the capacitive resonance method have been proposed. In a passive stylus pen, the stylus pen resonates with a drive signal applied to the touch sensor to generate a signal, and the touch sensor detects the touch position by receiving the resonant signal from the stylus pen. However, when such a passive stylus pen touches the touch sensor simultaneously with a conductive object such as a human body, the touch sensor may not be able to detect the touch of the stylus pen depending on the position or touch area of ​​the conductive object.

[0012] A passive stylus pen, which operates without an internal power source, performs touch input using electrical and / or magnetic signals transmitted from a touch sensor, and therefore, research is underway to improve touch sensitivity.

[0013] However, recently, a technology has been proposed to realize a passive stylus pen that uses a resonant circuit and is capable of precise touch recognition.

[0014] In particular, in the case of an EMR (Electro-Magnetic Resonance) type pen among passive stylus pens, a digitizer transmits an electromagnetic signal to the pen, and then the digitizer receives a resonance signal from the pen. That is, since signals are transmitted and received only by the digitizer, signal transmission and signal reception cannot be performed simultaneously, and must be performed in a time-division manner. Similarly, in the case of an ECR (Electrically Coupled Resonance) type pen among passive stylus pens, a touch electrode transmits an electromagnetic signal to the pen, and then the touch electrode receives a resonance signal from the pen. That is, since signals are transmitted and received only by the touch electrode, signal transmission and signal reception cannot be performed simultaneously, and must be performed in a time-division manner.

[0015] The EMR method has an advantage in the quality of writing / drawing, which is the core function of a stylus pen, but has the disadvantage of being thick and costly because a separate EMR sensor panel and EMR driver IC must be added in addition to the capacitance touch panel.

[0016] The capacitive resonance method uses a general capacitance touch sensor and touch controller IC, and supports pen touch by improving the performance of the IC without any additional costs.

[0017] In the capacitive resonance method, in order for a touch sensor to accurately identify a touch by a stylus pen, the amplitude of the resonance signal must be large, and therefore the frequency of the drive signal transmitted from the touch sensor to the stylus pen must be approximately the same as the resonance frequency of the resonant circuit built into the stylus pen. However, with conventional capacitive resonance methods, even if the resonance frequency and the frequency of the drive signal match, there is a problem in that signal transmission is difficult due to significant attenuation caused by the very small capacitance formed between the touch sensor that outputs the drive signal and the pen tip that receives the drive signal. As a result, despite many years of attempts by many touch controller IC vendors, a sufficient output signal cannot be obtained, and no manufacturer has yet succeeded in mass production.

[0018] Therefore, in order to manufacture a capacitive resonant stylus pen that can generate the maximum output signal, how to design the internal resonant circuit and the structure of the pen is a very important factor. Summary of the Invention [Problem to be solved by the invention]

[0019] An embodiment of the present invention is directed to providing a capacitive resonant stylus pen capable of producing a sufficient output signal.

[0020] SUMMARY OF THE INVENTION An embodiment of the present invention provides an electronic device, a stylus pen, and driving and control methods thereof that can prevent noise caused by a display panel.

[0021] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods of driving and controlling the same, that have multiple resonant frequencies that can be used to receive signals with reduced noise.

[0022] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and driving and control methods thereof that can reduce noise in touch signals.

[0023] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and driving and control methods thereof that can improve the touch sensing performance of a stylus pen.

[0024] Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling them that can improve the touch sensing performance of a stylus pen in an environment where noise in a frequency band similar to the resonance signal of the stylus pen is present.

[0025] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, which can improve the signal sensitivity for detecting the touch position of a stylus pen.

[0026] The embodiments of the present invention provide an electronic device, a stylus pen, and driving and control methods thereof that can sense the touch position of a stylus pen when the stylus pen is in contact with another conductive object such as a human body at the same time.

[0027] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, which are capable of searching for the resonant frequency of a stylus pen.

[0028] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, that are capable of producing a sufficient resonant signal.

[0029] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, which are capable of resonating signals transmitted from a touch sensor.

[0030] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, which facilitate the use of a stylus pen.

[0031] The embodiments of the present invention provide a foldable electronic device that facilitates the use of a stylus pen, a stylus pen, and methods for driving and controlling the same.

[0032] Embodiments of the present invention provide an antenna module implemented on one layer, an electronic device including the same, a stylus pen, and methods for driving and controlling the same.

[0033] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, which allow wireless charging while the stylus pen is in use.

[0034] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, which include an antenna module that is driven with a smaller current.

[0035] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, which are capable of outputting a drive signal corresponding to the resonant frequency of the stylus pen.

[0036] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling them, which are capable of transmitting signals of appropriate magnitude to a touch sensor.

[0037] The present invention provides an electronic device, a stylus pen, and methods for driving and controlling the same, which are capable of wireless charging without a separate wireless charging module.

[0038] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, including an antenna module that allows for reduced power consumption.

[0039] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, in which the resonant frequency can be maintained.

[0040] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, capable of touch input and sensor input.

[0041] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, that are capable of changing the resonant frequency.

[0042] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, that can amplify the magnetic field generated in a coil with the same voltage.

[0043] SUMMARY OF THE INVENTION Embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling the same, that are capable of wireless charging with maximum efficiency.

[0044] The embodiments of the present invention provide an electronic device, a stylus pen, and methods for driving and controlling them, which are capable of communicating with the electronic device using a commercially available communication protocol. [Means for solving the problem]

[0045] To achieve the above or other objectives, a stylus pen according to one embodiment includes a body portion, a conductive tip exposed from within the body portion to the outside, a ferrite core located within the body portion, an inductor portion connected to the conductive tip and including a coil wound in multiple layers on at least a portion of the ferrite core, and a capacitor portion located within the body portion and electrically connected to the inductor portion to form a resonant circuit.

[0046] Here, the ferrite core may have a dielectric constant of 1000 or less, the coil may be wound with adjacent winding layers alternately, and the coil may be a wire in a form in which the coil covers two or more insulated wires.

[0047] The ferrite core may contain nickel, and the coil may be formed from a litz wire.

[0048] The device may further include a grounding portion electrically connectable to a user, and may further include a bobbin covering at least a portion of the ferrite core, the coil being wound on at least a portion of the bobbin.

[0049] The inductor portion may further include a conductive blocking member covering at least a portion of the inductor portion, the blocking member may include a slit that blocks generation of eddy current, and the slit may separate both ends of the blocking member along a first direction in which eddy current is generated.

[0050] According to another embodiment, a stylus pen may include a body portion, a conductive tip exposed from within the body portion, a resonant circuit portion located within the body portion and connected to the conductive tip, which resonates an electrical signal transmitted from the conductive tip, and a ground portion that can be electrically connected to a user.

[0051] The resonant circuit unit may include an inductor unit including a coil wound in multiple layers on at least a portion of the ferrite core, the inductor unit being electrically connected to the ferrite core and the conductive tip, and a capacitor unit located in the body and electrically connected to the ground unit and the conductive tip. The ferrite core may have a dielectric constant of 1000 or less, the coil may be wound such that adjacent winding layers are inclined in a zigzag pattern, and the coil may be a wire wrapped around two or more insulated wires.

[0052] The ferrite core may contain nickel, and the coil may be formed from a litz wire.

[0053] In this case, the resonant circuit unit may be formed of two or more inductor units and one capacitor unit connected in series, or may be formed of two or more LC resonant circuits connected in series.

[0054] The resonant circuit unit may further include a conductive blocking member covering at least a portion of the resonant circuit unit. The blocking member may include a slit that blocks generation of eddy currents, and the slit may space both ends of the blocking member apart along a first direction in which eddy currents are generated.

[0055] A stylus pen according to one embodiment includes a housing, a conductive tip at least a portion of which is exposed to the outside of the housing, a resonant circuit portion located within the housing and connected to the conductive tip, which resonates an electrical signal transmitted from the conductive tip, and a conductive blocking member located corresponding to the portion of the housing where the conductive tip is exposed to the outside.

[0056] The blocking member may be a single conductive plate.

[0057] One portion may include a non-conductive holder portion, and the blocking member may be positioned corresponding to the holder portion and include one slit that blocks the generation of eddy currents, and both ends of the blocking member may be spaced apart along a first direction by the one slit, which may be a direction in which eddy currents are generated.

[0058] The blocking member further includes a connecting portion connecting both ends of the blocking member, and a grounding portion connected to the blocking member and capable of being electrically connected to a user, the connecting portion being electrically connected to the grounding portion.

[0059] The blocking member may be located between a region 0.1 mm away from the opening of the housing through which the conductive tip is exposed to the outside and a region 20 mm away from the opening.

[0060] A portion includes a non-conductive holder portion, and the blocking member is positioned corresponding to the holder 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, the first direction being a direction in which eddy currents are formed, and the plurality of first blocking portions may be conductive.

[0061] The blocking member further includes a connecting portion connecting the plurality of first blocking portions, and further includes a grounding portion connected to the blocking member and capable of being electrically connected to a user, and the connecting portion is electrically connected to the grounding portion.

[0062] One portion includes a non-conductive holder portion, and the blocking member is positioned corresponding to the holder portion, extends along a first direction, and includes a plurality of second blocking portions spaced apart along a second direction perpendicular to the first direction, the first direction being the direction in which eddy currents are formed, and both ends of each of the plurality of second blocking portions are spaced apart along the first direction.

[0063] The resonant circuit may further include a ground portion connected to the insulating member and capable of being electrically connected to a user, and the resonant circuit may include an inductor portion connected between the conductive tip and the ground portion, and a capacitor portion connected between the conductive tip and the ground portion.

[0064] The blocking member further covers at least a portion of the inductor portion.

[0065] One portion includes a non-conductive holder portion and a non-conductive body portion spaced apart from the conductive tip, and the first portion of the insulating member located adjacent to the conductive tip corresponds to the holder portion and is a conductive plate, and the second portion covering at least a portion of the inductor portion of the insulating member corresponds to the body portion and includes a slit that blocks the generation of eddy currents, and the slit separates both ends of the second portion of the insulating member along a first direction, which may be a direction in which eddy currents are generated.

[0066] One portion includes a non-conductive holder portion, and the housing further includes a non-conductive body portion spaced apart from the conductive tip, a first portion of the insulating member located adjacent to the conductive tip is located corresponding to the holder portion and includes a first slit that blocks the generation of eddy currents, a second portion covering at least a portion of the inductor portion of the insulating member is located corresponding to the body portion and includes a second slit that blocks the generation of eddy currents, the first slit separates both ends of the first portion of the insulating member along a first direction, and the second slit separates both ends of the second portion of the insulating member along the first direction, and the first direction may be a direction in which eddy currents are formed.

[0067] One portion includes a non-conductive holder portion, and the housing further includes a non-conductive body portion spaced apart from the conductive tip, and a first portion of the insulating member located adjacent to the conductive tip is located corresponding to the holder portion and includes a plurality of first interrupting portions spaced apart from each other along a first direction and extending along a second direction perpendicular to the first direction, and a second portion covering at least a portion of the inductor portion of the insulating member is located corresponding to the body portion and includes a plurality of third interrupting portions spaced apart from each other along the first direction and extending along a second direction perpendicular to the first direction, and the first direction is a direction in which eddy currents are formed, and the plurality of first interrupting portions and the plurality of third interrupting portions may be conductive.

[0068] The inductor portion may include a ferrite core and a conductive coil wound around the ferrite core, the conductive coil being coupled to the conductive tip.

[0069] The blocking member may be located on an interior surface of the housing.

[0070] The blocking member may be located on an outer surface of the housing.

[0071] The blocking member is housed between the inner and outer surfaces of the housing.

[0072] The blocking member may include a sheet on which a plurality of conductive blocking portions are printed.

[0073] The blocking member may include a plurality of blocking portions plated onto the housing.

[0074] To achieve the above or other objectives, a touch device according to one embodiment includes a touch panel including a plurality of touch electrodes; a driving / receiving unit that applies a first driving signal to the touch panel while driving in a first mode and applies a second driving signal different from the first driving signal to the touch panel while driving in a second mode; and a control unit that compares a first sensing signal received from the touch panel with a first threshold value while driving in the first mode to obtain first touch data and compares a second sensing signal received from the touch panel with a second threshold value while driving in the second mode to obtain second touch data, and the control unit can determine the second threshold value based on at least a portion of the first sensing signal.

[0075] The controller may acquire touch coordinates using the second sensing signals, and may determine the second threshold value using first sensing signals corresponding to a predetermined region based on the touch coordinates among the first sensing signals.

[0076] The plurality of touch electrodes include a plurality of first touch electrodes arranged in a first direction and a plurality of second touch electrodes arranged in a second direction intersecting the first direction, and the driving / receiving unit may apply a signal of a first frequency to the plurality of first touch electrodes as the first driving signal during a first period of driving in the first mode.

[0077] The driving / receiving unit may apply a signal of a second frequency different from the first frequency as the second driving signal to all of the plurality of first touch electrodes and the plurality of second touch electrodes during a portion of a second period when driving in the second mode.

[0078] The controller may receive the first sensing signals from the plurality of second touch electrodes during the first period.

[0079] The controller may receive the second sensing signals from the plurality of first touch electrodes and the plurality of second touch electrodes during a portion of the second period.

[0080] The frequency of the second drive signal may correspond to a resonant frequency of the stylus pen.

[0081] The first sensing signal may be used to obtain touch coordinates of a first touch object, the second sensing signal may be used to obtain touch coordinates of a second touch object, the second touch object may include a stylus pen, and the first touch object may include a conductive touch object different from the stylus pen.

[0082] When the first and second touch objects simultaneously touch the touch panel, the control unit may change the second threshold value according to a distance between a touch point of the first touch object and a touch point of the second touch object, and acquire the second touch data by the second touch object.

[0083] When the first and second touch objects simultaneously touch the touch panel, the controller may change the second threshold value according to a touch pattern of the first touch object and acquire the second touch data of the second touch object.

[0084] The touch pattern may include a touch area or a touch shape.

[0085] According to another embodiment, a touch device may include a touch panel, a driver / receiver that applies a drive signal corresponding to a frequency of a resonance signal of a stylus pen to the touch panel and receives sensing signals from the touch panel, and a controller that acquires touch data from the stylus pen using at least one sensing signal identified as a valid touch signal among the sensing signals. The controller may identify a sensing signal having a signal magnitude in a first range as the valid touch signal when the touch panel is touched alone by the stylus pen, and may identify a sensing signal having a signal magnitude in a second range different from the first range as the valid touch signal when the touch panel is simultaneously touched by the stylus pen and a conductive touch object different from the stylus pen.

[0086] The control unit compares the sensing signal with a threshold value to identify the valid touch signal, and may use different threshold values ​​when the touch panel is touched solely by the stylus pen and when the touch panel is simultaneously touched by the stylus pen and a conductive touch object different from the stylus pen.

[0087] The control unit compares the sensing signal with a threshold value to identify the valid touch signal, and when the touch panel is simultaneously touched by the stylus pen and a conductive touch object other than the stylus pen, the control unit may amplify the sensing signal having the second range of signal magnitude to have the first range of signal magnitude and then compare the amplified signal with the threshold value.

[0088] According to an embodiment, a touch detection method for a touch device includes, when a touch panel is solely touched by a stylus pen, applying a driving signal corresponding to a resonance signal of the stylus pen to the touch panel; receiving sensing signals from the touch panel; identifying a valid touch signal from the sensing signals using a threshold value; and acquiring touch data from the stylus pen using the sensing signal identified as the valid touch signal from the sensing signals. The identifying step may include, when the touch panel is solely touched by the stylus pen, identifying a sensing signal having a signal magnitude in a first range among the sensing signals as the valid touch signal; and, when the touch panel is simultaneously touched by the stylus pen and a conductive touch object other than the stylus pen, identifying a sensing signal having a signal magnitude in a second range different from the first range among the sensing signals as the valid touch signal.

[0089] The threshold value when the touch panel is touched solely by the stylus pen may be different from the threshold value when the touch panel is simultaneously touched by the stylus pen and a conductive touch object different from the stylus pen.

[0090] The step of identifying the sensing signal having the signal magnitude in the second range as the valid touch signal may include amplifying the sensing signal having the signal magnitude in the second range among the sensing signals so that the sensing signal has the signal magnitude in the first range; and comparing the amplified sensing signal with the threshold value to identify the valid touch signal.

[0091] A touch detection method for a touch device according to another embodiment may include entering a first mode and applying a first drive signal to a touch panel, receiving a first sense signal from the touch panel in response to the first drive signal, and comparing the first sense signal with a first threshold value to obtain first touch data; entering a second mode and applying a second drive signal different from the first drive signal to the touch panel, receiving a second sense signal from the touch panel in response to the second drive signal, determining a second threshold value based on the first sense signal, and comparing the second sense signal with the second threshold value to obtain second touch data.

[0092] The determining step may include acquiring touch coordinates using the second sensing signals, and determining the second threshold value using first sensing signals corresponding to a predetermined region based on the touch coordinates among the first sensing signals.

[0093] The determining may include using one of a first value and a second value obtained using the first sensing signal as the second critical value.

[0094] The second value may be less than the first value.

[0095] The touch detection method for the touch device according to another embodiment may further include acquiring touch coordinates of a first touch object using the first touch data and acquiring touch coordinates of a second touch object using the second touch data. The second touch object may include a stylus pen, and the first touch object may include a conductive touch object different from the stylus pen.

[0096] The determining step may include changing the second threshold value according to a distance between a touch point of the first touch object and a touch point of the second touch object when the first and second touch objects simultaneously touch the touch panel.

[0097] The determining may include changing the second threshold value according to a touch pattern of the first touch object when the first and second touch objects simultaneously touch the touch panel.

[0098] To achieve the above or other objects, a touch device according to one embodiment includes a touch panel including a plurality of first touch electrodes arranged in a first direction and a plurality of second touch electrodes arranged in a second direction intersecting the first direction; a driver that applies a drive signal of a first frequency to the plurality of first touch electrodes and the plurality of second touch electrodes during at least one first period in one frame period among consecutive frame periods; a receiver that receives sensing signals from the plurality of first touch electrodes and the plurality of second touch electrodes during a second period after the first period in which the drive signal of the first frequency is applied; and a controller that controls the driver to change the frequency of the drive signal applied to the plurality of first touch electrodes and the plurality of second touch electrodes during at least one first period in a frame period after the one frame period based on the signal output from the receiver.

[0099] To achieve the above or other objects, a touch device according to one embodiment includes a touch panel including a plurality of touch electrodes, and a driver / receiver that applies drive signals having a frequency corresponding to a resonant frequency of a stylus pen to the plurality of touch electrodes and receives sensing signals from the plurality of touch electrodes, and the drive signals may include a first drive signal and a second drive signal that is out of phase with the first drive signal.

[0100] The touch device may further include a control unit that acquires first touch data based on sensing signals received from the plurality of touch electrodes during a first period, the driving / receiving unit applying the first driving signal to the plurality of touch electrodes during a second period and applying the second driving signal to the plurality of touch electrodes during a third period, and the first period may include at least one of the second period and the third period.

[0101] The controller may further acquire second touch data based on sensing signals received from the plurality of touch electrodes in at least one of the second period and the third period.

[0102] The number of the second sections and the number of the third sections included in the first section may be the same.

[0103] The number of the second sections and the number of the third sections included in the first section may be different from each other.

[0104] Within the first section, the second section and the third section may be alternately arranged at a predetermined interval.

[0105] The second and third sections may be repeated at least once within the first section.

[0106] The second section and the second section may each occur consecutively at least twice within the first section.

[0107] The number of times the second intervals are consecutive within the first interval may be different from the number of times the third intervals are consecutive within the first interval.

[0108] The number of times the second intervals appear consecutively within the first interval may be the same as the number of times the third intervals appear consecutively.

[0109] The control unit may calculate a first amplitude value by multiplying an amplitude value of the first sensing signal by a first value if the sensing signal is a first sensing signal received from the plurality of touch electrodes in response to the first drive signal, and calculate a second amplitude value by multiplying an amplitude value of the second sensing signal by a second value if the sensing signal is a second sensing signal received from the plurality of touch electrodes in response to the second drive signal. The control unit may acquire the first touch data based on the first amplitude value and the second amplitude value acquired during a predetermined time, wherein the first value and the second value have the same absolute value but different signs.

[0110] The first touch data or the second touch data may correspond to a capacitance change amount of the touch electrode, a change amount of the sensing signal, or an ADC (analog to digital converter) output due to a touch of the stylus pen on the touch panel.

[0111] In addition, a touch detection method for a touch device according to an embodiment may include selectively applying one of first and second driving signals having a frequency corresponding to a resonant frequency of a stylus pen and having different phases to a touch panel including a plurality of touch electrodes; receiving sensing signals from the plurality of touch electrodes; calculating amplitudes of the sensing signals; repeating the applying, receiving, and calculating steps a predetermined number of times; obtaining magnitudes of final signals corresponding to the plurality of touch electrodes using the calculated amplitudes each time the calculating step is performed; and obtaining touch data due to the touch of the stylus pen based on the magnitudes of the final signals.

[0112] The selectively applying step may include selectively applying one of the first and second driving signals so that the number of times the first driving signal is applied is equal to the number of times the second driving signal is applied, within the preset number of times.

[0113] The selectively applying step may include selectively applying one of the first and second driving signals such that the number of times the first driving signal is applied is different from the number of times the second driving signal is applied within the preset number of times.

[0114] The selectively applying step may include selectively applying one of the first and second driving signals such that the first driving signal and the second driving signal are applied alternately at a predetermined period.

[0115] The selectively applying step may include selectively applying one of the first and second driving signals such that the first driving signal and the second driving signal are each repeatedly applied at least once within the preset number of times.

[0116] The selectively applying step may include selectively applying one of the first and second driving signals so that each of the first and second driving signals is applied at least twice in succession, and the number of times the first driving signal is applied in succession may be different from the number of times the second driving signal is applied in succession within the preset number of times.

[0117] The selectively applying step may include selectively applying one of the first and second driving signals so that each of the first and second driving signals is applied at least twice in succession, and the number of times the first driving signal is applied in succession may be the same as the number of times the second driving signal is applied in succession within the preset number of times.

[0118] The step of acquiring the magnitude of the final signal may include: if the sensing signal is a first sensing signal received from the plurality of touch electrodes in response to the first drive signal, multiplying an amplitude value of the first sensing signal by a first value to calculate a first amplitude value; if the sensing signal is a second sensing signal received from the plurality of touch electrodes in response to the second drive signal, multiplying an amplitude value of the second sensing signal by a second value to calculate a second amplitude value; and acquiring the magnitude of the final signal based on the first amplitude value and the second amplitude value acquired during a predetermined time, wherein the first value and the second value may have the same absolute value but different signs.

[0119] The acquiring of the touch data may include acquiring the touch data based on touch electrodes, among the plurality of touch electrodes, whose corresponding magnitudes of the final signals are equal to or greater than a threshold value.

[0120] To achieve the above or other objects, a touch device according to one embodiment includes a touch sensor unit located on a display unit of a display device that drives a plurality of pixels using a vertical synchronization signal and a horizontal synchronization signal, the touch sensor unit including a plurality of first touch electrodes arranged in a first direction and a plurality of second touch electrodes arranged in 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 period 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 period after the first period; and a control unit that generates touch information using the sensing signal, wherein the drive signal is synchronized with the horizontal synchronization signal.

[0121] The drive receiving unit may simultaneously apply a drive signal to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a first period, and may receive a sensing signal from at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a second period.

[0122] The drive signal may be synchronized with pulses of a horizontal synchronization signal having a predetermined period.

[0123] The drive signal may be synchronized with a pulse of the vertical synchronization signal for each frame of a predetermined period.

[0124] The frequency of the drive signal may be an integer multiple of two or more of the frequency of the horizontal synchronization signal.

[0125] The sensing signal may be characterized as being received in an interval determined in response to a horizontal synchronization signal.

[0126] The interval determined in accordance with the horizontal synchronization signal may be an interval other than the period during which a data signal is written to at least some of the pixels.

[0127] The section determined in accordance with the horizontal synchronization signal may be a period during which the scan signal applied to the plurality of pixels is at a disable level.

[0128] The period determined in response to the horizontal synchronization signal may be a period excluding a period during which a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels.

[0129] The driving receiver may receive the sensing signal at a frequency of the driving signal synchronized with the frequency of the horizontal synchronization signal.

[0130] The receiving time points of the sensing signal may include at least two time points whose phases are opposite to each other within one period of the frequency.

[0131] The receiving time points of the sensing signal may include at least two time points at which the phase is changed within one period of the frequency.

[0132] The sensing signal may be a signal obtained by transmitting a resonance signal generated by the driving signal to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes.

[0133] The display unit is disposed on the substrate, a thin film encapsulation layer is disposed on the display unit, and the plurality of touch electrodes are disposed on the thin film encapsulation layer. The thin film encapsulation layer may have a thickness of 4 um to 10 um.

[0134] A driving method of 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 in a first direction of a touch sensor unit and a plurality of second touch electrodes arranged in a second direction intersecting the first direction during a first period, 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 period after the first period, and generating touch information using the sensing signal, wherein the driving signal is synchronized with the horizontal synchronization signal.

[0135] The step of applying a driving signal may include a step of simultaneously applying the driving signal to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a first period, and the step of receiving a sensing signal may include a step of receiving a sensing signal from at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a second period.

[0136] The drive signal may be synchronized with pulses of a horizontal synchronization signal having a predetermined period.

[0137] The frequency of the drive signal may be an integer multiple of two or more of the frequency of the horizontal synchronization signal.

[0138] The sensing signal may be characterized as being received in an interval determined in response to a horizontal synchronization signal.

[0139] The interval determined in accordance with the horizontal synchronization signal may be an interval other than the period during which a data signal is written to at least some of the pixels.

[0140] The section determined in accordance with the horizontal synchronization signal may be a period during which the scan signal applied to the plurality of pixels is at a disable level.

[0141] The period determined in response to the horizontal synchronization signal may be a period excluding a period during which a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels.

[0142] Receiving the sensing signal may include receiving the sensing signal in a period other than a period in which a data signal is written to at least some of the pixels of the display device in response to a horizontal synchronization signal.

[0143] Receiving the sensing signal may include receiving the sensing signal during a period in which a scan signal applied to the plurality of pixels of the display device in response to a horizontal synchronization signal is at a disable level.

[0144] The step of receiving the sensing signal may include receiving the sensing signal during a period excluding a period during which a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels of the display device in response to a horizontal synchronization signal.

[0145] According to an embodiment, the display device includes a display panel including a display area in which a plurality of pixels are located, a data driver applying data signals to data lines connected to the plurality of pixels, a scan driver applying scan signals to scan lines connected to the plurality of pixels, a signal controller controlling the data driver and the scan driver according to a horizontal synchronization signal, a touch panel including an active area in which a plurality of first touch electrodes arranged in a first direction overlapping the display area and a plurality of second touch electrodes arranged in a second direction intersecting the first direction are located, and a touch controller driving the touch panel to apply a drive signal to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a first period and to receive a sensing signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second period after the first period, wherein the drive signal is synchronized with pulses of the horizontal synchronization signal.

[0146] The frequency of the drive signal may be an integer multiple of two or more of the frequency of the horizontal synchronization signal.

[0147] According to an embodiment, a touch system includes a touch device including: a touch sensor unit located on a display unit of a display device that drives a plurality of pixels by a vertical synchronization signal and a horizontal synchronization signal, the touch sensor unit including a plurality of first touch electrodes arranged in a first direction and a plurality of second touch electrodes arranged in a second direction intersecting the first direction; a drive receiving unit that applies a drive signal to at least one of the first touch electrodes and the second touch electrodes during a first period and receives a sense signal from at least one of the first touch electrodes and the second touch electrodes during a second period subsequent to the first period; and a control unit that generates touch information using the sense signal. A stylus pen 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, wherein the sense signal is a signal resonated by the resonant circuit unit and the drive signal is a signal synchronized with the horizontal synchronization signal.

[0148] To achieve the above or other objects, a touch device according to one embodiment includes a touch panel including first and second touch electrodes that sense an external touch through a change in capacitance formed between them, and a third touch electrode arranged in a matrix form; and a control unit that applies a first drive signal to at least one of the first, second, and third touch electrodes to detect a touch position of a first object, and applies a second drive signal and a third drive signal different from the second drive signal to at least one of the first, second, and third touch electrodes to detect a touch position of a second object different from the first object, wherein the first drive signal has a frequency different from that of the second drive signal, and the second drive signal is a signal that resonates the second object.

[0149] The control unit may apply a second drive signal to at least one of the first touch electrode, the second touch electrode, and the third touch electrode located in an area excluding the touch position of the first object among the first touch electrode, the second touch electrode, and the third touch electrode.

[0150] The control unit may apply a third drive signal to at least one of the first touch electrode, the second touch electrode, and the third touch electrode that is located at a touch position of the first object among the first touch electrode, the second touch electrode, and the third touch electrode.

[0151] The control unit applies a second drive signal to at least one of the first and second touch electrodes and the third touch electrode during a first period so as to detect the position of the second object, and during a second period after the first period, applies only the second drive signal or applies both the second drive signal and the third drive signal depending on the distance between the touch position of the first object and the touch position of the second object.

[0152] The controller may apply both the second driving signal and the third driving signal if the distance between the touch position of the first object and the touch position of the second object exceeds a threshold value.

[0153] The control unit applies the second drive signal to all of the third touch electrodes during a first period, and during a second period after the first period, applies the third drive signal to the third touch electrodes corresponding to the touch position of the first object depending on the distance between the touch position of the first object and the touch position of the second object, and applies the second drive signal to the remaining third touch electrodes.

[0154] The controller may further apply a second driving signal to both the first touch electrode and the second touch electrode during the first and second periods.

[0155] The control unit may further apply a second drive signal to all of the first touch electrodes and the second touch electrodes during the first period, and may apply a third drive signal to the first touch electrodes and the second touch electrodes corresponding to the touch position of the first object according to the distance between the touch position of the first object and the touch position of the second object during the second period, and may apply the second drive signal to the remaining first touch electrodes and the second touch electrodes.

[0156] The first object may include at least one of a finger and a palm, and the second object may be a stylus pen.

[0157] The third drive signal may have a phase difference of 180 degrees with the second drive signal.

[0158] The third drive signal can maintain a constant voltage.

[0159] According to another embodiment, a touch device may include a plurality of first sensor patterns and a plurality of second sensor patterns, each having an outer line and an inner 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 positioned on a layer different from the plurality of first connecting patterns; a plurality of third sensor patterns arranged in an inner area surrounded by the inner line on a plane; and a plurality of third connecting patterns electrically connecting the plurality of third sensor patterns, wherein the plurality of third sensor patterns may be positioned in the inner areas of the plurality of first sensor patterns and the plurality of second sensor patterns on a plane.

[0160] The plurality of third connecting patterns may be located on the same layer as the plurality of second connecting patterns.

[0161] A touch device further including an insulating layer disposed between the plurality of first connecting patterns and the plurality of second connecting patterns, wherein the plurality of second connecting patterns and the plurality of third connecting patterns are located on a first layer below the insulating layer, the plurality of first sensor patterns and the plurality of second sensor patterns, and the plurality of first connecting patterns are located on a second layer above the insulating layer, and the plurality of second sensor patterns are connected to the plurality of second connecting patterns through the insulating layer between the first layer and the second layer.

[0162] Each of the plurality of third sensor patterns is disposed on the first layer, and each of the plurality of third sensor patterns does not need to overlap with each of the plurality of first sensor patterns and the plurality of second sensor patterns on a plane.

[0163] At least one of the plurality of third connecting patterns can connect a third sensor pattern located in an inner region of a first sensor pattern among the plurality of third patterns to a third sensor pattern located in an inner region of a second sensor pattern among the plurality of third patterns.

[0164] The touch panel may further include a first driver / receiver electrically connected to the plurality of first sensor patterns, a second driver / receiver electrically connected to the plurality of second sensor patterns, and a third driver / receiver electrically connected to the plurality of third sensor patterns, wherein in a first period, at least one of the first driver / receiver, the second driver / receiver, and the third driver / receiver is driven to detect a touch position of a first object, and in a second period after the first period, at least one of the first driver / receiver, the second driver / receiver, and the third driver / receiver is driven to detect a touch position of a second object, wherein the first object may include at least one of a finger and a palm, and the second object may be a stylus pen.

[0165] In the second section, 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 from each other.

[0166] A touch device according to yet another embodiment includes first and second sensor patterns each having an opening and detecting an external touch through a change in capacitance formed between them, and a third sensor pattern located in each opening on the same layer as the first and second sensor patterns, wherein two or more adjacent third sensor patterns among the third sensor patterns are connected to each other to form one sensor electrode, and the two or more adjacent third sensor patterns forming one sensor electrode are located at least in the opening included in the first sensor pattern and the opening included in the second sensor pattern, respectively.

[0167] A part of the third sensor pattern is floating.

[0168] To achieve the above or other objectives, a stylus pen according to one embodiment includes a body portion, a conductive tip exposed from within the body portion to the outside, a ground portion capable of being electrically connected to a user, and a resonant circuit portion located within the body portion, electrically connected between the conductive tip and the ground portion, and 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.

[0169] The resonant circuit unit includes a first resonant circuit that resonates with an electrical signal of a first frequency and a second resonant circuit that resonates with an electrical signal of a second frequency, and the first resonant circuit outputs a resonant signal through the conductive tip during a first section, and the second resonant circuit outputs a resonant signal through the conductive tip during a second section different from the first section.

[0170] The first resonant circuit and the second resonant circuit can alternately output resonant signals.

[0171] The first resonant circuit includes a first inductor coupled between the conductive tip and the second resonant circuit and a first capacitor coupled between the conductive tip and the second resonant circuit, and the second resonant circuit includes a second inductor coupled between a ground and the first resonant circuit and a second capacitor coupled between the ground and the first resonant circuit, and the first inductor and the second inductor may have ferrite cores separated from each other.

[0172] The first resonant circuit is coupled between the conductive tip and the second resonant circuit, and the second resonant circuit is coupled between the first resonant circuit and ground.

[0173] The resonant circuit section can output a resonant signal whose frequency changes with time in response to an electrical signal whose frequency changes with time.

[0174] According to an embodiment, a touch device includes a touch panel including first touch electrodes arranged in a first direction and second touch electrodes arranged in a second direction intersecting the first direction, and a control unit that samples a signal transmitted from at least one of the first touch electrodes and the second touch electrodes during a first period in one touch report frame period at a first sampling frequency associated with a first driving frequency to determine whether a noise signal is received, and 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 during a second period subsequent to the first period if it is determined that a noise signal is received.

[0175] The control unit may receive a sensing signal by sampling a signal transmitted from at least one of the first touch electrode and the second touch electrode according to a second sampling frequency associated with the second driving signal during a third period subsequent to the second period.

[0176] A signal transmitted from at least one of the first touch electrode and the second touch electrode during the third period may be a signal resonated by the second driving signal.

[0177] The control unit may sample a signal transmitted from at least one of the first touch electrode and the second touch electrode during a first period in a next touch report frame period after the third period ends, using a second sampling frequency associated with the second driving frequency, to determine whether a noise signal is received.

[0178] If the control unit determines that a noise signal is not received, the control unit may apply a first drive signal having a first drive frequency to at least one of the first touch electrode and the second touch electrode during a second period subsequent to the first period.

[0179] The controller may receive a sensing signal by sampling a signal transmitted from at least one of the first touch electrode and the second touch electrode at a first sampling frequency during a third period from the second period onward.

[0180] According to another embodiment, a touch device includes a touch panel including first touch electrodes arranged in a first direction and second touch electrodes arranged in a second direction intersecting the first direction; and a control unit that applies a first driving signal having a first driving frequency to at least one of the first touch electrodes and the second touch electrodes during a first number of first intervals within one touch report frame period including a plurality of first intervals, samples a signal transmitted from at least one of the first touch electrodes and the second touch electrodes at a first sampling frequency associated with the first driving frequency, and receives a first sensing signal; and 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 during a second number of first intervals, and samples a signal transmitted from at least one of the first touch electrodes and the second touch electrodes at a second sampling frequency associated with the second driving frequency, and receives a second sensing signal.

[0181] The control unit may use the first and second sensing signals to determine whether a noise signal is received, and if it is determined that a noise signal is received, may change the first and second numbers within a next touch report frame period.

[0182] The control unit can increase the first number if the SNR (signal-noise ratio) of the first sensing signal is greater than the SNR of the second sensing signal, and can increase the second number if the SNR of the second sensing signal is greater than the SNR of the first sensing signal.

[0183] The first number and the second number may be the same.

[0184] A touch system according to an embodiment includes a stylus pen according to an embodiment and a touch device according to any one of the embodiments.

[0185] To achieve the above or other objectives, an electronic device according to one embodiment includes a touch panel including a loop coil, a plurality of first touch electrodes arranged in a first direction, and a plurality of second touch electrodes arranged in a second direction intersecting the first direction; a driver that applies a drive signal of a first frequency to the loop coil during at least one first section in one frame period among consecutive frame periods; a receiver that receives sensing signals from the plurality of first touch electrodes and the plurality of second touch electrodes during a second section after the first section in which the drive signal of the first frequency is applied; and a controller that controls the driver to change the frequency of the drive signal applied to the loop coil during at least one first section in a frame period after the one frame period based on the signal output from the receiver.

[0186] To achieve the above or other objectives, an electronic device according to one embodiment includes a touch panel including a loop coil and a plurality of touch electrodes, and a driver / receiver that applies a drive signal having a frequency corresponding to a resonant frequency of a stylus pen to the loop coil and receives a sensing signal from the plurality of touch electrodes, and the drive signal may include a first drive signal and a second drive signal that is out of phase with the first drive signal.

[0187] The electronic device may further include a control unit that acquires first touch data based on sensing signals received from the plurality of touch electrodes during a first period, the driving / receiving unit applying the first driving signal to the plurality of touch electrodes during a second period and applying the second driving signal to the plurality of touch electrodes during a third period, and the first period may include at least one of the second period and the third period.

[0188] The controller may further acquire second touch data based on sensing signals received from the plurality of touch electrodes in at least one of the second period and the third period.

[0189] The number of the second sections and the number of the third sections included in the first section may be the same.

[0190] The number of the second sections included in the first section may be different from the number of the third sections included in the first section.

[0191] Within the first section, the second section and the third section may be alternately arranged at a predetermined cycle.

[0192] The second section and the third section may be repeated at least once within the first section.

[0193] Within the first section, the second section and the third section may each occur consecutively at least twice.

[0194] The number of times the second intervals continue within the first interval may be different from the number of times the third intervals continue within the first interval.

[0195] The number of times the second intervals appear consecutively within the first interval may be the same as the number of times the third intervals appear consecutively.

[0196] The control unit may calculate a first amplitude value by multiplying an amplitude value of the first sensing signal by a first value if the sensing signal is a first sensing signal received from the plurality of touch electrodes in response to the first drive signal, and calculate a second amplitude value by multiplying an amplitude value of the second sensing signal by a second value if the sensing signal is a second sensing signal received from the plurality of touch electrodes in response to the second drive signal. The control unit may acquire the first touch data based on the first amplitude value and the second amplitude value acquired during a predetermined time, wherein the first value and the second value have the same absolute value but different signs.

[0197] The first touch data or the second touch data may correspond to a capacitance change amount of the touch electrode, a change amount of the sensing signal, or an ADC (analog to digital converter) output due to a touch of the stylus pen on the touch panel.

[0198] According to an embodiment, a touch detection method for an electronic device may include selectively applying, to a loop coil, one of first and second driving signals having a frequency corresponding to a resonant frequency of a stylus pen and having different phases; receiving sensing signals from a plurality of touch electrodes; calculating amplitudes of the sensing signals; repeating the applying, receiving, and calculating steps a predetermined number of times; obtaining magnitudes of final signals corresponding to the plurality of touch electrodes using the calculated amplitudes each time the calculating step is performed; and obtaining touch data corresponding to the touch of the stylus pen based on the magnitudes of the final signals.

[0199] The selectively applying step may include selectively applying one of the first and second driving signals such that the number of times the first driving signal is applied is equal to the number of times the second driving signal is applied within the preset number of times.

[0200] The selectively applying step may include selectively applying one of the first and second driving signals such that the number of times the first driving signal is applied is different from the number of times the second driving signal is applied within the preset number of times.

[0201] The selectively applying step may include selectively applying one of the first and second driving signals such that the first driving signal and the second driving signal are applied alternately at a predetermined period.

[0202] The selectively applying step may include selectively applying one of the first and second driving signals such that the first driving signal and the second driving signal are each repeatedly applied at least once within the preset number of times.

[0203] The selectively applying step may include selectively applying one of the first and second driving signals so that each of the first and second driving signals is applied at least twice in succession, and the number of times the first driving signal is applied in succession may be different from the number of times the second driving signal is applied in succession within the preset number of times.

[0204] The selectively applying step may include selectively applying one of the first and second driving signals so that each of the first and second driving signals is applied at least twice in succession, and the number of times the first driving signal is applied in succession may be the same as the number of times the second driving signal is applied in succession within the preset number of times.

[0205] The step of acquiring the magnitude of the final signal may include: if the sensing signal is a first sensing signal received from the plurality of touch electrodes in response to the first drive signal, multiplying an amplitude value of the first sensing signal by a first value to calculate a first amplitude value; if the sensing signal is a second sensing signal received from the plurality of touch electrodes in response to the second drive signal, multiplying an amplitude value of the second sensing signal by a second value to calculate a second amplitude value; and acquiring the magnitude of the final signal based on the first amplitude value and the second amplitude value acquired during a predetermined time, wherein the first value and the second value may have the same absolute value but different signs.

[0206] The acquiring of the touch data may include acquiring the touch data based on touch electrodes, among the plurality of touch electrodes, whose corresponding magnitudes of the final signals are equal to or greater than a threshold value.

[0207] To achieve the above or other objectives, an electronic device according to one embodiment includes a touch sensor unit located on a display unit of a display unit that drives a plurality of pixels using a loop coil, a vertical synchronization signal, and a horizontal synchronization signal, the touch sensor unit including a plurality of first touch electrodes arranged in a first direction and a plurality of second touch electrodes arranged in a second direction intersecting the first direction; a drive receiving unit that applies a drive signal to the loop coil during a first period 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 period after the first period; and a control unit that generates touch information using the sensing signal, wherein the drive signal is synchronized with the horizontal synchronization signal.

[0208] The drive receiving unit may simultaneously apply a drive signal to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a first period, and may receive a sensing signal from at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a second period.

[0209] The drive signal may be synchronized with pulses of a horizontal synchronization signal having a predetermined period.

[0210] The drive signal may be synchronized with a pulse of the vertical synchronization signal for each frame of a predetermined period.

[0211] The frequency of the drive signal may be an integer multiple of two or more of the frequency of the horizontal synchronization signal.

[0212] The sensing signal may be characterized as being received in an interval determined in response to a horizontal synchronization signal.

[0213] The interval determined in accordance with the horizontal synchronization signal may be an interval other than the period during which a data signal is written to at least some of the pixels.

[0214] The section determined in accordance with the horizontal synchronization signal may be a period during which the scan signal applied to the plurality of pixels is at a disable level.

[0215] The period determined in response to the horizontal synchronization signal may be a period excluding a period during which a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels.

[0216] The driving receiver may receive the sensing signal at a frequency of the driving signal synchronized with the frequency of the horizontal synchronization signal.

[0217] The receiving time points of the sensing signal may include at least two time points whose phases are opposite to each other within one period of the frequency.

[0218] The time points at which the sensing signal is received may include at least two time points at which the phase is changed within one period of the frequency.

[0219] The sensing signal may be a signal obtained by transmitting a resonance signal generated by the driving signal to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes.

[0220] The display unit is located on the substrate, a thin film encapsulation layer is located on the display unit, and the plurality of touch electrodes are located on the thin film encapsulation layer. The thin film encapsulation layer may have a thickness of 4 um to 10 um.

[0221] According to one embodiment, a driving method for an electronic device includes receiving a horizontal synchronization signal from a signal control unit of the display device; applying a driving signal to at least one of a plurality of first touch electrodes arranged in a first direction of a touch sensor unit and a plurality of second touch electrodes arranged in a second direction intersecting the first direction during a first period; 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 period after the first period; and generating touch information using the sensing signal, wherein the driving signal is synchronized with the horizontal synchronization signal.

[0222] The step of applying a driving signal may include a step of simultaneously applying the driving signal to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a first period, and the step of receiving a sensing signal may include a step of receiving a sensing signal from at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a second period.

[0223] The drive signal may be synchronized with pulses of a horizontal synchronization signal having a predetermined period.

[0224] The frequency of the drive signal may be an integer multiple of two or more of the frequency of the horizontal synchronization signal.

[0225] The sensing signal may be characterized as being received in an interval determined in response to a horizontal synchronization signal.

[0226] The interval determined in accordance with the horizontal synchronization signal may be an interval other than the period during which a data signal is written to at least some of the pixels.

[0227] The section determined in accordance with the horizontal synchronization signal may be a period during which the scan signal applied to the plurality of pixels is at a disable level.

[0228] The period determined in response to the horizontal synchronization signal may be a period excluding a period during which a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels.

[0229] Receiving the sensing signal may include receiving the sensing signal in a period other than a period in which a data signal is written to at least some of the pixels of the display device in response to a horizontal synchronization signal.

[0230] Receiving the sensing signal may include receiving the sensing signal during a period in which a scan signal applied to the plurality of pixels of the display device in response to a horizontal synchronization signal is at a disable level.

[0231] The step of receiving the sensing signal may include receiving the sensing signal during a period excluding a period during which a data signal is applied to at least one of a plurality of data lines connected to a plurality of pixels of the display device in response to a horizontal synchronization signal.

[0232] According to an embodiment, the display device includes a display panel including a display area in which a plurality of pixels are located, a data driver applying data signals to data lines connected to the plurality of pixels, a scan driver applying scan signals to scan lines connected to the plurality of pixels, a signal controller controlling the data driver and the scan driver according to a horizontal synchronization signal, a touch panel including an active area in which a plurality of first touch electrodes arranged in a first direction overlapping the display area and a plurality of second touch electrodes arranged in a second direction intersecting the first direction are located, and a touch controller driving the touch panel to apply a drive signal to at least one of the plurality of first touch electrodes and at least one of the plurality of second touch electrodes during a first period and to receive a sensing signal from at least one of the plurality of first touch electrodes and the plurality of second touch electrodes during a second period after the first period, wherein the drive signal is synchronized with pulses of the horizontal synchronization signal.

[0233] The frequency of the drive signal may be an integer multiple of two or more of the frequency of the horizontal synchronization signal.

[0234] According to one embodiment, the touch system includes: a touch sensor unit located on a display unit of a display device that drives a plurality of pixels by a vertical synchronization signal and a horizontal synchronization signal, the touch sensor unit including a plurality of first touch electrodes arranged in a first direction and a plurality of second touch electrodes arranged in a second direction intersecting the first direction; a drive receiving unit that applies a drive signal to at least one of the first touch electrodes and the second touch electrodes during a first period and receives a sense signal from at least one of the first touch electrodes and the second touch electrodes during a second period subsequent to the first period; an electronic device including a control unit that generates touch information using the sense signal; and a stylus pen including a conductive tip and a resonant circuit unit connected to the conductive tip and resonating with the drive signal transmitted from the conductive tip, wherein the sense signal is a signal resonated by the resonant circuit unit and the drive signal is a signal synchronized with the horizontal synchronization signal.

[0235] To achieve the above or other objectives, a stylus pen according to one embodiment includes a body portion, a conductive tip exposed from within the body portion to the outside, a ferrite core located within the body portion, an inductor portion connected to the conductive tip and including a coil wound in multiple layers on at least a portion of the ferrite core, and a capacitor portion located within the body portion and electrically connected to the inductor portion to form a resonant circuit.

[0236] Here, the ferrite core may have a dielectric constant of 1000 or less, the coil may be wound with adjacent winding layers alternately, and the coil may be a wire in a form in which the coil covers two or more insulated wires.

[0237] The ferrite core may also include nickel, and the coil may be formed from Litz wire.

[0238] The device may further include a grounding portion electrically connectable to a user, and may further include a bobbin covering at least a portion of the ferrite core, the coil being wound on at least a portion of the bobbin.

[0239] The inductor portion may further include a conductive blocking member covering at least a portion of the inductor portion, the blocking member may include a slit that blocks generation of eddy current, and the slit may separate both ends of the blocking member along a first direction in which eddy current is generated.

[0240] According to another embodiment, a stylus pen may include a body portion, a conductive tip exposed from within the body portion, a resonant circuit portion located within the body portion and connected to the conductive tip, which resonates an electrical signal transmitted from the conductive tip, and a ground portion that can be electrically connected to a user.

[0241] The resonant circuit unit may include an inductor unit including a ferrite core located within the body unit, a coil electrically connected to the conductive tip, and wound in multiple layers on at least a portion of the ferrite core, and a capacitor unit located within the body unit and electrically connected to the ground unit and the conductive tip. The ferrite core may have a dielectric constant of 1000 or less, and the coil may be wound such that adjacent winding layers are inclined in a zigzag pattern, and the coil may be a wire wrapped around two or more insulated wires.

[0242] The ferrite core may also include nickel, and the coil may be formed from Litz wire.

[0243] In this case, the resonant circuit unit may be formed of two or more inductors and one capacitor connected in series, or may be formed of two or more LC resonant circuits connected in series.

[0244] The resonant circuit unit may further include a conductive blocking member covering at least a portion of the resonant circuit unit. The blocking member may include a slit that blocks generation of eddy currents, and the slit may separate both ends of the blocking member along a first direction in which eddy currents are generated.

[0245] A stylus pen according to one embodiment includes a housing, a conductive tip at least a portion of which is exposed to the outside of the housing, a resonant circuit portion located within the housing for resonating a magnetic signal, and a conductive blocking member located corresponding to the portion of the housing where the conductive tip is exposed to the outside.

[0246] The blocking member may be a single conductive plate.

[0247] One portion may include a non-conductive holder portion, and the blocking member may be positioned corresponding to the holder portion and include one slit that blocks the generation of eddy currents, and the one slit may separate both ends of the blocking member along a first direction, which may be a direction in which eddy currents are generated.

[0248] The blocking member is connected to the blocking member further including a connecting portion connecting both ends of the blocking member, and further includes a grounding portion capable of being electrically connected to a user, and the connecting portion is electrically connected to the grounding portion.

[0249] The blocking member may be located between a region 0.1 mm away from the opening of the housing through which the conductive tip is exposed to the outside and a region 20 mm away from the opening.

[0250] A portion includes a non-conductive holder portion, and the blocking member is positioned corresponding to the holder 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, the first direction being a direction in which eddy currents are formed, and the plurality of first blocking portions may be conductive.

[0251] The blocking member is connected to a blocking member further including a connecting portion connecting the plurality of first blocking portions, and further includes a grounding portion that can be electrically connected to a user, and the connecting portion is electrically connected to the grounding portion.

[0252] One portion includes a non-conductive holder portion, and the blocking member is positioned corresponding to the holder portion, extends along a first direction, and includes a plurality of second blocking portions spaced apart along a second direction perpendicular to the first direction, the first direction being the direction in which eddy currents are formed, and both ends of each of the plurality of second blocking portions are spaced apart along the first direction.

[0253] The device may further include a ground portion connected to the blocking member and capable of being electrically connected to a user, and the resonant circuit portion may include an inductor portion connected between the conductive tip and the ground portion, and a capacitor portion connected between the conductive tip and the ground portion.

[0254] The blocking member further covers at least a portion of the inductor portion.

[0255] One portion includes a non-conductive holder portion and a non-conductive body portion spaced apart from the conductive tip, and the first portion of the insulating member located adjacent to the conductive tip corresponds to the holder portion and is a conductive plate, and the second portion covering at least a portion of the inductor portion of the insulating member corresponds to the body portion and includes a slit that blocks the generation of eddy currents, and the slit separates both ends of the second portion of the insulating member along a first direction, which may be a direction in which eddy currents are generated.

[0256] One portion includes a non-conductive holder portion, and the housing further includes a non-conductive body portion spaced apart from the conductive tip, a first portion of the insulating member located adjacent to the conductive tip is located corresponding to the holder portion and includes a first slit that blocks the generation of eddy currents, a second portion covering at least a portion of the inductor portion of the insulating member is located corresponding to the body portion and includes a second slit that blocks the generation of eddy currents, the first slit separates both ends of the first portion of the insulating member along a first direction, and the second slit separates both ends of the second portion of the insulating member along the first direction, and the first direction may be a direction in which eddy currents are formed.

[0257] One portion includes a non-conductive holder portion, and the housing further includes a non-conductive body portion spaced apart from the conductive tip, and a first portion of the insulating member located adjacent to the conductive tip is located corresponding to the holder portion and includes a plurality of first interrupting portions spaced apart from each other along a first direction and extending along a second direction perpendicular to the first direction, and a second portion covering at least a portion of the inductor portion of the insulating member is located corresponding to the body portion and includes a plurality of third interrupting portions spaced apart from each other along the first direction and extending along the second direction perpendicular to the first direction, the first direction being a direction in which eddy currents are formed, and the plurality of first interrupting portions and the plurality of third interrupting portions may be conductive.

[0258] The inductor portion may include a ferrite core and a conductive coil wound around the ferrite core, the conductive coil being coupled to the conductive tip.

[0259] The blocking member may be located on an interior surface of the housing.

[0260] The blocking member may be located on an outer surface of the housing.

[0261] The blocking member is housed between the inner and outer surfaces of the housing.

[0262] The blocking member may include a sheet on which a plurality of conductive blocking portions are printed.

[0263] The blocking member may include a plurality of blocking portions plated onto the housing.

[0264] To achieve the above or other objectives, a stylus pen according to one embodiment includes a body portion, a conductive tip exposed from within the body portion to the outside, a resonant circuit portion located within the body portion and connected to the conductive tip, which resonates an electrical signal transmitted from the conductive tip, and a conductive blocking member covering at least a portion of the resonant circuit portion.

[0265] The device may further include a grounding portion that can be electrically connected to a user.

[0266] The resonant circuit portion may include an inductor portion coupled between the conductive tip and the ground portion, and a capacitor portion coupled between the conductive tip and the ground portion.

[0267] The blocking portion can cover only the inductor portion.

[0268] The blocking portion may include one slit that blocks generation of eddy current, and both ends of the blocking portion may be spaced apart in a first direction by the one slit, the first direction being a direction in which eddy current is generated.

[0269] The blocking portion may further include a connecting portion spaced apart from the inductor portion within the body portion along a second direction perpendicular to the first direction, and connecting both ends of the blocking portion.

[0270] The connecting portion is electrically connected to the ground portion.

[0271] The interrupting portion may include a plurality of first interrupting portions spaced apart from one another along a first direction and extending along a second direction perpendicular to the first direction, the first direction being a direction in which eddy currents are formed, and the plurality of first interrupting portions may be conductive.

[0272] The blocking portion may further include a connecting portion spaced apart from the position of the inductor portion within the body portion along the second direction and connecting the plurality of first blocking portions.

[0273] The connecting portion is electrically connected to the ground portion.

[0274] The interrupter portion extends along a first direction and includes a plurality of second interrupters spaced apart along a second direction perpendicular to the first direction, the first direction being the direction in which eddy currents are formed, and both ends of each of the plurality of second interrupters being spaced apart along the first direction.

[0275] The blocking portion may further include a connecting portion extending along the second direction and connecting multiple second blocking portions, and an additional grounding portion spaced apart from the position of the inductor portion within the body portion along the second direction and connected to the connecting portion.

[0276] The additional ground portion is electrically coupled to the ground portion.

[0277] The inductor portion may include a ferrite core and a conductive coil wound around the ferrite core, the conductive coil being coupled to the conductive tip.

[0278] The capacitor unit may include a plurality of capacitors connected in parallel and having different capacitances.

[0279] The blocking member may be located on an interior surface of the body portion.

[0280] The blocking member may be located on an exterior surface of the body portion.

[0281] The blocking member is housed between the inner and outer surfaces of the body portion.

[0282] A stylus pen according to another embodiment includes a body portion, a conductive tip exposed from within the body portion to the outside, a resonant circuit portion located within the body portion and connected to the conductive tip, which resonates an electrical signal transmitted from the conductive tip, and a conductive blocking member covering at least a portion of the body portion, the blocking portion including a slit that blocks the generation of eddy currents, and the slit separating both ends of the blocking portion along a first direction, the first direction being the direction in which eddy currents are formed.

[0283] The resonant circuit unit may include an inductor unit connected between the conductive tip and the ground unit, a capacitor unit connected between the conductive tip and the ground unit, and a conductive connecting member connecting the conductive tip and the inductor unit.

[0284] According to yet another embodiment, a stylus pen includes a body portion, a conductive blocking member covering at least a portion of the body portion, and a conductive tip exposed from within the body portion to the outside, the blocking member including at least one slit that blocks the generation of eddy currents.

[0285] The blocking member may be located on an interior surface of the body portion.

[0286] The blocking member may be located on an exterior surface of the body portion.

[0287] The blocking member is housed between the inner and outer surfaces of the body portion.

[0288] The blocking member may include a plurality of blocking portions printed on a sheet.

[0289] The blocking member may include a plurality of blocking portions plated onto the body portion.

[0290] To achieve the above or other objectives, a stylus pen according to one embodiment includes a body portion, a conductive tip exposed from within the body portion to the outside, a ground portion that can be electrically connected to a user, and a resonant circuit portion located within the body portion, electrically connected between the conductive tip and the ground portion, and including at least one resonant circuit that resonates with electromagnetic signals of different frequencies transmitted through the body portion and outputs resonant signals of different frequencies.

[0291] The resonant circuit unit includes a first resonant circuit that resonates with an electromagnetic signal of a first frequency and a second resonant circuit that resonates with an electromagnetic signal of a second frequency, and the first resonant circuit outputs a resonant signal through the conductive tip during a first section, and the second resonant circuit outputs a resonant signal through the conductive tip during a second section different from the first section.

[0292] The first resonant circuit and the second resonant circuit can alternately output resonant signals.

[0293] The first resonant circuit includes a first inductor coupled between the conductive tip and the second resonant circuit and a first capacitor coupled between the conductive tip and the second resonant circuit, and the second resonant circuit includes a second inductor coupled between a ground and the first resonant circuit and a second capacitor coupled between the ground and the first resonant circuit, and the first inductor and the second inductor may have ferrite cores separated from each other.

[0294] The first resonant circuit is coupled between the conductive tip and the second resonant circuit, and the second resonant circuit is coupled between the first resonant circuit and ground.

[0295] The resonant circuit section is capable of outputting a resonant signal whose frequency varies with time in response to an electromagnetic signal whose frequency varies with time.

[0296] According to an embodiment, the touch sensor includes a touch panel including first touch electrodes arranged in a first direction and second touch electrodes arranged in a second direction intersecting the first direction, and a control unit that samples a signal transmitted from at least one of the first touch electrodes and the second touch electrodes during a first period within one touch report frame period at a first sampling frequency associated with a first driving frequency to determine whether a noise signal is received, and 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 during a second period subsequent to the first period if it is determined that a noise signal is received.

[0297] The control unit may receive a sensing signal by sampling a signal transmitted from at least one of the first touch electrode and the second touch electrode according to a second sampling frequency associated with the second driving signal during a third period subsequent to the second period.

[0298] A signal transmitted from at least one of the first touch electrode and the second touch electrode during the third period may be a signal resonated by the second driving signal.

[0299] The control unit may sample a signal transmitted from at least one of the first touch electrode and the second touch electrode during a first period in a next touch report frame period after the third period ends, using a second sampling frequency associated with the second driving frequency, and determine whether a noise signal is received.

[0300] If the control unit determines that a noise signal is not received, the control unit may apply a first drive signal having a first drive frequency to at least one of the first touch electrode and the second touch electrode during a second period subsequent to the first period.

[0301] The controller may receive a sensing signal by sampling a signal transmitted from at least one of the first touch electrode and the second touch electrode at a first sampling frequency during a third period from the second period onward.

[0302] According to another embodiment, a touch sensor includes a touch panel including first touch electrodes arranged in a first direction and second touch electrodes arranged in a second direction intersecting the first direction; and a control unit that applies a first driving signal having a first driving frequency to at least one of the first touch electrodes and the second touch electrodes during a first number of first intervals within one touch report frame period including a plurality of first intervals, samples a signal transmitted from at least one of the first touch electrodes and the second touch electrodes at a first sampling frequency associated with the first driving frequency, and receives a first sensing signal; and 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 during a second number of first intervals, samples a signal transmitted from at least one of the first touch electrodes and the second touch electrodes at a second sampling frequency associated with the second driving frequency, and receives a second sensing signal.

[0303] The control unit may determine whether a noise signal is received using the first sensing signal and the second sensing signal, and if it is determined that a noise signal is received, may change the first number and the second number within the next touch report frame period.

[0304] The control unit can increase the first number if the SNR (signal-noise ratio) of the first sensing signal is greater than the SNR of the second sensing signal, and can increase the second number if the SNR of the second sensing signal is greater than the SNR of the first sensing signal.

[0305] The first number and the second number may be the same.

[0306] A touch system according to an embodiment includes a stylus pen according to an embodiment and a touch sensor according to any one of the embodiments.

[0307] To achieve the above or other objectives, an electronic device according to one embodiment includes a touch panel including a loop coil, a plurality of first touch electrodes arranged in a first direction, and a plurality of second touch electrodes arranged in a second direction intersecting the first direction; a coil driver that applies a coil drive signal to the loop coil; a drive receiver that applies drive signals 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 driver to change the length of an operating section of the coil driver based on the sensing signal output from the receiver.

[0308] 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 an area excluding a folding area that forms a curved surface in a folded state, and an antenna loop located on the ferrite sheet.

[0309] To achieve the above or other objectives, an electronic device according to one embodiment includes a plurality of antenna loops formed spaced apart on a substrate, the plurality of antenna loops including a first antenna loop connecting a first pad to a second pad on the substrate and a second antenna loop connecting a third pad to a fourth pad on the substrate, and a flexible circuit board electrically connected to the first to fourth pads, the flexible circuit board including connecting wiring connecting the second pad to the third pad and a coil driver applying a drive signal to the first pad and the second pad.

[0310] To achieve the above or other objectives, a stylus pen according to one embodiment includes a sensor that senses an external input, a resonant circuit, and a controller that receives power from the resonant circuit and controls a resonant signal generated in the resonant circuit based on the sensing value of the sensor.

[0311] 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 pen and receives an electrical signal corresponding to the electromagnetic signals from the stylus pen, and a touch controller that determines one of the two or more frequencies as the frequency of the electromagnetic signal based on a change in the electrical signal and operates the touch sensor.

[0312] The touch controller can determine the frequency at which the magnitude of the electrical signal is large as the frequency of the electromagnetic signal.

[0313] The touch controller can generate touch data based on electrical signals on a frame-by-frame basis.

[0314] The touch sensor can sequentially apply electromagnetic signals having two or more frequencies within one frame.

[0315] The touch sensor can apply electromagnetic signals of different frequencies corresponding to a plurality of time periods within one frame during each time period.

[0316] The touch sensor can apply electromagnetic signals having two or more frequencies in one frame.

[0317] 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 to each of a plurality of time intervals in a first frame, and sequentially applies electromagnetic signals having frequencies included in each of a plurality of second frequency intervals divided by a second frequency unit to each of a plurality of time intervals in a second frame subsequent to the first frame, wherein the first frequency unit is greater than the second frequency unit.

[0318] A first frequency section including a frequency with the largest amplitude among electrical signals received during the first frame may be divided into second frequency units.

[0319] 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 receiving unit for applying a drive signal corresponding to two or more frequencies to at least one touch electrode of the plurality of first touch electrodes and the plurality of second touch electrodes and receiving an electrical signal so that an electromagnetic signal having two or more frequencies is transmitted to a stylus pen.

[0320] The touch sensor may include a touch panel including a loop coil that generates a magnetic field, 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 the loop coil and receives electrical signals so that electromagnetic signals having two or more frequencies are transmitted to the stylus pen.

[0321] The touch sensor may further include a temperature sensor for sensing the ambient temperature, and may begin transmitting electromagnetic signals having two or more frequencies when the ambient temperature changes.

[0322] A method for controlling an electronic device according to one embodiment includes a step in which a touch sensor sequentially transmits electromagnetic signals having two or more frequencies to a stylus pen, and a step in which a touch controller determines one of the two or more frequencies as the frequency of the electromagnetic signal based on a change in the electrical signal, and operates the touch sensor.

[0323] Determining any one of the two or more frequencies as the frequency of the electromagnetic signal may include the touch controller determining, as the frequency of the electromagnetic signal, a frequency at which the magnitude of the electrical signal is large.

[0324] The method may further include generating touch data based on the electrical signal by the touch controller on a frame-by-frame basis.

[0325] The step of sequentially transmitting electromagnetic signals having two or more frequencies to the stylus pen may include the step of the touch sensor sequentially applying electromagnetic signals having two or more frequencies within one frame.

[0326] The step of sequentially transmitting electromagnetic signals having two or more frequencies to the stylus pen may include a step of the touch sensor applying the electromagnetic signals having two or more frequencies in units of one frame.

[0327] The step of applying electromagnetic signals having two or more frequencies in one frame unit includes a step of the touch sensor sequentially applying, to each of a plurality of time periods in the first frame, electromagnetic signals having frequencies included in each of a plurality of first frequency periods divided by a first frequency unit, and a step of the touch sensor sequentially applying, to each of a plurality of time periods in a second frame subsequent to the first frame, electromagnetic signals having frequencies included in each of a plurality of second frequency periods divided by a second frequency unit, wherein the first frequency unit is greater than the second frequency unit.

[0328] A first frequency section including a frequency with the largest amplitude among electrical signals received during a first frame is divided into second frequency units.

[0329] The method may further include sensing the ambient temperature, and when a change in the ambient temperature is sensed, the touch sensor may begin transmitting an electromagnetic signal having two or more frequencies.

[0330] In one embodiment, the system includes a stylus pen including a resonant circuit having a resonant frequency, and a touch sensor that searches for the resonant frequency by increasing the frequency of a drive signal from a lower limit to an upper limit within a predetermined range of a reference frequency, or by decreasing the frequency of the drive signal from an upper limit to a lower limit within the predetermined range, and transmits an electromagnetic signal having the resonant frequency to the stylus pen.

[0331] To achieve the above or other objectives, an antenna module according to one embodiment includes a resonant circuit including a loop coil and a capacitor connected in parallel with the loop coil, a blocking capacitor connected in series with the resonant circuit, and a power source that transmits a drive signal of a predetermined frequency to the blocking capacitor.

[0332] An electronic device according to one embodiment includes a loop coil and a coil driver that applies drive signals of a predetermined frequency to both ends of the loop coil, the coil driver applying drive signals of opposite phases to both ends of the loop coil.

[0333] 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, and the touch driver receives the sensing signal in a section where the drive signal is not applied.

[0334] To achieve the above and other objects, an electronic device according to one embodiment includes a touch sensor including touch electrodes, and a loop coil having different distances between windings corresponding to the arrangement of the touch electrodes.

[0335] To achieve the above and other objectives, a stylus pen according to one embodiment includes a resonant circuit, an inductor coupled to the resonant circuit and mutual inductance therewith, and an active module coupled to the inductor. [Effects of the Invention]

[0336] The electronic device, stylus pen, and driving and control method thereof according to an embodiment of the present invention have the advantage of being able to generate a sufficient output signal even with a thin diameter by providing an optimal structure for the resonant circuit of the capacitive resonant stylus.

[0337] In addition, when the stylus pen is in contact with another conductive object such as a human body at the same time, the touch position of the stylus pen can be detected.

[0338] Furthermore, even if the resonant frequency of the stylus pen is changed, the magnitude of the signal output from the stylus pen can be increased.

[0339] Another advantage is that the sensitivity of receiving touch input can be improved.

[0340] Another advantage is that the touch position can be calculated more accurately.

[0341] In addition, there is an advantage that the touch sensing performance of the stylus pen can be improved in an environment where noise in a frequency band similar to the resonance signal of the stylus pen exists.

[0342] In addition, it has the advantage of improving the signal to noise ratio (SNR) of the touch device.

[0343] Furthermore, by presenting an optimum structure of the resonant circuit of the stylus pen, there is an advantage that a sufficient output signal can be generated even with a thin diameter.

[0344] Another advantage is that it is possible to provide a stylus pen that is robust against external factors.

[0345] Another advantage is that it is possible to provide a stylus pen that prevents unintentional touch input.

[0346] Another advantage is that a stylus pen that improves the touch sensitivity of a touch sensor can be provided.

[0347] Another advantage is that the SNR (signal-noise ratio) of the signal output from the stylus pen can be improved.

[0348] Another advantage is that palm rejection can be performed.

[0349] In addition, the energy consumption of the touch sensor can be reduced by reducing the energy consumption in the section where the driving signal is output from the touch sensor due to the resonance of the stylus pen.

[0350] Another advantage is that it can provide a thinner and smaller form factor.

[0351] Furthermore, there is an advantage in that the manufacturing costs of the antenna module and the electronic device including the same can be reduced.

[0352] Also, there is an advantage that additional input by a user using a stylus pen can be detected.

[0353] Another advantage is that the manufacturing cost of the stylus pen can be reduced.

[0354] Furthermore, even if the resonant frequency of the stylus pen is changed, the magnitude of the signal output from the stylus pen can be increased.

[0355] Furthermore, there is an advantage in that the power consumption of the antenna module and the electronic device including the same can be reduced.

[0356] Another advantage is that the energy transmitted to the stylus pen can be increased.

[0357] In addition, there is an advantage that the power required for using the stylus pen can be transmitted simultaneously with the use of the stylus pen without requiring a separate wireless charging.

[0358] Another advantage is that the stylus pen can be wirelessly charged while in use.

[0359] Another advantage is that the stylus pen can be charged more quickly.

[0360] Another advantage is that the power consumption for charging the stylus pen can be reduced.

[0361] Also, there is an advantage that additional input by a user using a stylus pen can be detected.

[0362] Further scope of applicability of the present disclosure will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments, such as preferred embodiments of the present disclosure, are given by way of example only, since various changes and modifications within the scope of the disclosure will be apparent to those skilled in the art. [Brief explanation of the drawings]

[0363] [Figure 1] 1(a) and 1(b) are conceptual diagrams showing a stylus pen and an electronic device. [Figure 2] FIG. 1 is a schematic block diagram of an electronic device. [Figure 3] 1A is a plan view schematically illustrating a part of a display unit according to an embodiment, and FIG. 1B is a cross-sectional view taken along line II' in FIG. 1A. [Figure 4]FIG. 1 is a block diagram of a configuration of a portion of an electronic device. [Figure 5] 3 is a block diagram illustrating an example of a display unit 250 of FIG. 2. FIG. [Figure 6] 6 is a diagram showing pixels of the display unit of FIG. 5. [Figure 7] 6 is a timing diagram showing an example of a drive signal for driving the display unit of FIG. 5. FIG. [Figure 8] 3 is a block diagram illustrating another example of the display unit of FIG. 2.

[0023] FIG. [Figure 9] 9 is a diagram showing pixels of the display unit of FIG. 8. [Figure 10] 1 is a diagram illustrating a touch sensing unit according to an embodiment; [Figure 11] 2 is a diagram illustrating a touch sensing unit 260 according to an embodiment. [Figure 12] 10 is a diagram illustrating an example in which a stylus pen touches a touch sensing unit 260 according to an embodiment. [Figure 13] 1 is a diagram illustrating a case where a driving signal is applied to a stylus pen and a user's hand holding the stylus pen; [Figure 14] 10 is a diagram illustrating a case in which a touch input is performed on a touch sensing unit 260 using a stylus pen according to an embodiment. [Figure 15] 15 is a diagram showing the influence of the drive signal transmitted to the hand in FIG. 14. [Figure 16] 10 is a diagram illustrating an application operation of a driving signal to a touch sensing unit 260 according to an embodiment. [Figure 17] 10 is a diagram illustrating another example of performing a touch input on the touch sensing unit 260 using a stylus pen according to an embodiment. [Figure 18] 18 is a diagram showing the influence of the drive signal transmitted to the hand in FIG. 17. [Figure 19] 10 is a diagram illustrating an application operation of a driving signal to a touch sensing unit 260 according to an embodiment. [Figure 20]1 is a diagram illustrating a touch sensing unit according to an embodiment; [Figure 21] FIG. 2 is a plan view of a portion of a touch sensor 261 according to one embodiment. [Figure 22] FIG. 22 is a plan view showing a part of FIG. 21 in detail. [Figure 23] FIG. 23 is a cross-sectional view taken along the line XX′ of FIG. 22. [Figure 24] FIG. 2 is a plan view of a portion of a touch sensor 261 according to another embodiment. [Figure 25] 21 is a diagram showing an example in which a stylus pen is close to the touch sensing unit of FIG. 20; [Figure 26] 1 is a diagram illustrating a part of a touch sensing unit according to an embodiment; [Figure 27] 2 is a diagram illustrating a part of a touch sensing unit 260 according to an embodiment. [Figure 28] 2 is a diagram illustrating a part of a touch sensing unit 260 according to an embodiment. [Figure 29] 1A and 1B are diagrams illustrating how a stylus pen 10 according to one embodiment and a touch screen 20 according to two embodiments are driven. [Figure 30] 1 illustrates a stylus pen according to various embodiments. [Figure 31] 1 is a diagram illustrating a stylus pen and a portion of an electronic device according to an embodiment. [Figure 32] 1 is a flowchart illustrating a sensor input operation of a stylus pen and an electronic device according to an embodiment; [Figure 33] 33 is a waveform diagram showing an example of a drive signal and a resonance signal according to FIG. 32. FIG. [Figure 34] 10 is a flowchart illustrating an operation of changing the resonant frequency of a stylus pen and an electronic device according to an embodiment. [Figure 35] 35 is a waveform diagram showing an example of a drive signal and a resonance signal according to FIG. 34. FIG. [Figure 36] 1 is a diagram illustrating a stylus pen and a portion of an electronic device according to an embodiment. [Figure 37] 10 is a flowchart illustrating a sensor input operation of a stylus pen and an electronic device according to another embodiment. [Figure 38] 10 is a flowchart illustrating an operation of changing the resonant frequency of a stylus pen and an electronic device according to another embodiment. [Figure 39] FIG. 1A is a diagram showing a state in which a stylus pen is close to an electronic device, and FIG. 1B is a schematic circuit diagram showing the stylus pen and the electronic device. [Figure 40] 10A and 10B are diagrams illustrating a state in which a stylus pen is placed close to an electronic device and transmits and receives signals. [Figure 41] FIG. 2 is an equivalent circuit diagram showing a stylus pen and an electronic device that outputs a drive signal. [Figure 42] 1 is an equivalent circuit diagram showing a stylus pen and an electronic device that receives a sensing signal; [Figure 43] 1 is a diagram showing a state in which a stylus pen is close to an electronic device. [Figure 44] 1 is a diagram showing a state in which a stylus pen is close to an electronic device. [Figure 45] 1 is a diagram showing a state in which a stylus pen is close to an electronic device. [Figure 46] 1 is a diagram showing a state in which a stylus pen is close to an electronic device. [Figure 47] 1 is a diagram showing a state in which a stylus pen is close to an electronic device. [Figure 48] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device. [Figure 49] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device. [Figure 50] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device. [Figure 51] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device. [Figure 52] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device. [Figure 53] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device. [Figure 54] FIG. 10 is yet another schematic circuit diagram illustrating a stylus pen and an electronic device. [Figure 55] FIG. 10 is yet another schematic circuit diagram illustrating a stylus pen and an electronic device. [Figure 56] FIG. 10 is yet another schematic circuit diagram illustrating a stylus pen and an electronic device. [Figure 57] FIG. 10 is yet another schematic circuit diagram illustrating a stylus pen and an electronic device. [Figure 58] FIG. 10 is yet another schematic circuit diagram illustrating a stylus pen and an electronic device. [Figure 59] FIG. 10 is yet another schematic circuit diagram illustrating a stylus pen and an electronic device. [Figure 60] 1 is a diagram illustrating a state in which a stylus pen is in proximity to an electronic device and transmits and receives signals; [Figure 61] 1 is a diagram illustrating a state in which a stylus pen is in proximity to an electronic device and transmits and receives signals; [Figure 62] FIG. 10 is yet another schematic circuit diagram illustrating a stylus pen and an electronic device. [Figure 63] FIG. 10 is yet another schematic circuit diagram illustrating a stylus pen and an electronic device. [Figure 64] 1 is a diagram illustrating an antenna module and a stylus pen according to an embodiment; [Figure 65] 10 is a diagram showing a drive signal applied to a loop coil by a coil driver and a resonance signal of a stylus pen. [Figure 66] 4 is a diagram illustrating a driving signal applied to a loop coil by a coil driver and a resonance signal of a stylus pen according to an embodiment; [Figure 67] 67 is a diagram specifically showing the coil driver of FIG. 66. [Figure 68] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device. [Figure 69] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device. [Figure 70] FIG. 70 is a circuit diagram showing the stylus pen of FIG. 69 in more detail. [Figure 71] FIG. 70 is a circuit diagram showing the stylus pen of FIG. 69 in more detail. [Figure 72] FIG. 1 is a schematic circuit diagram illustrating a stylus pen and an electronic device according to an embodiment. [Figure 73] FIG. 73 is a circuit diagram showing the stylus pen of FIG. 72 in more detail. [Figure 74] FIG. 73 is a circuit diagram showing the stylus pen of FIG. 72 in more detail. [Figure 75] 1A and 1B are diagrams illustrating a stylus pen and a portion of an electronic device according to various aspects of an embodiment. [Figure 76] 1A and 1B are diagrams illustrating a stylus pen and a portion of an electronic device according to various aspects of an embodiment. [Figure 77] 1A and 1B are diagrams illustrating a stylus pen and a portion of an electronic device according to various aspects of an embodiment. [Figure 78] 1 is a diagram illustrating a case in which a stylus pen is used in an electronic device according to an embodiment. [Figure 79] 1 is a diagram showing an example in which an antenna pattern is implemented on one surface of a substrate. [Figure 80] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 81] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 82] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 83] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 84] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 85] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 86] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 87] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 88] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 89] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 90] 1 is a diagram illustrating an antenna module according to an embodiment and a portion of an electronic device including the antenna module; [Figure 91] 1 is a diagram illustrating an example in which a conventional stylus pen is used in a foldable electronic device. [Figure 92] 1 is a diagram illustrating an example in which a conventional stylus pen is used in a foldable electronic device. [Figure 93] 1 is a diagram illustrating a foldable electronic device according to an embodiment. [Figure 94] 1 is a diagram illustrating a foldable electronic device according to an embodiment. [Figure 95] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 96] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 97] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 98] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 99] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 100] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 101] 10 is a diagram illustrating a driving signal of a loop coil and a resonance signal of a stylus pen according to an embodiment; [Figure 102] 10 is a diagram illustrating a foldable electronic device according to another embodiment. [Figure 103] 10 is a diagram illustrating a foldable electronic device according to another embodiment. [Figure 104] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 105] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 106] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 107] 10A and 10B are diagrams illustrating arrangements of touch panels and loop coils according to various aspects of other embodiments; [Figure 108] 10A and 10B are diagrams illustrating cases where a stylus pen is brought into proximity to various positions of a foldable electronic device according to an embodiment. [Figure 109] 10 is a diagram showing a driving signal of a loop coil and a resonance signal of a stylus pen according to the position of the stylus pen; [Figure 110] 110 is a diagram illustrating a magnetic field generated when the driving signal of FIG. 109 is applied. [Figure 111] 110 is a diagram illustrating a magnetic field generated when the driving signal of FIG. 109 is applied. [Figure 112] 110 is a diagram illustrating a magnetic field generated when the driving signal of FIG. 109 is applied. [Figure 113] 1 is a flowchart illustrating a touch detection method according to an embodiment; [Figure 114] This is a modified example of the touch detection method in FIG. [Figure 115]FIG. 115 is a waveform diagram showing an example of a drive signal according to the touch detection method of FIGS. 113 and 114. [Figure 116] 115 is a waveform diagram showing an example of a drive signal and a received signal in the touch detection method of FIGS. 113 and 114. FIG. [Figure 117] An example of processing the sensing signal in the first section T1 of FIG. 116 is shown. [Figure 118] 115 is a waveform diagram showing another example of the drive signal and the reception signal in the touch detection method of FIGS. 113 and 114. FIG. [Figure 119] An example of processing the sensing signal in the second section T2 of FIG. 118 is shown. [Figure 120] 119 is a graph showing the magnitude of the received signal in FIGS. 116 and 118. [Figure 121] 10 is a diagram showing touch areas of different objects; [Figure 122] 10 is a diagram showing touch areas of different objects; [Figure 123] 10 shows a case where the touch of the stylus pen 10 cannot be detected due to the distance between the stylus pen 10 and the touch point of another touch object 30. [Figure 124] This shows a case where the touch of the stylus pen 10 cannot be sensed due to the touch area of ​​another touch object 30. [Figure 125] 115 is a flowchart illustrating an embodiment of determining a valid touch signal in step S14 of the touch detection method of FIG. 114. [Figure 126] 115 is a flowchart illustrating another embodiment of determining a valid touch signal in step S14 of the touch detection method of FIG. 114. [Figure 127] 1 is a flow chart illustrating a method for driving an electronic device according to an embodiment; [Figure 128] FIG. 128 is a timing diagram showing an example of a horizontal synchronization signal Hsync and a drive signal according to the drive method of FIG. 127. [Figure 129] FIG. 128 is a timing diagram showing an example of a horizontal synchronization signal Hsync and a drive signal according to the drive method of FIG. 127. [Figure 130]128 is a timing diagram illustrating a time when a touch device according to an embodiment receives a sensing signal synchronized with the horizontal synchronization signal of the display unit 250 of FIG. 5 according to the driving method of FIG. 127. [Figure 131] 128 is a timing diagram illustrating a time when a touch device according to an embodiment receives a sensing signal synchronized with the horizontal synchronization signal of the display unit 250 of FIG. 5 according to the driving method of FIG. 127. [Figure 132] 128 is a timing diagram illustrating a time when a touch device according to an embodiment receives a sensing signal synchronized with the horizontal synchronization signal of the display unit 250 of FIG. 5 according to the driving method of FIG. 127. [Figure 133] 128 is a timing diagram illustrating a time when a touch device according to an embodiment receives a sensing signal synchronized with the horizontal synchronization signal of the display unit 250 of FIG. 5 according to the driving method of FIG. 127. [Figure 134] 10 is a timing diagram illustrating a driving operation of the pixel PX_ab and an operation of the touch device receiving a sensing signal. [Figure 135] 10 is a timing diagram illustrating a driving operation of the pixel PX_ab and an operation of the touch device receiving a sensing signal. [Figure 136] 1 is a diagram illustrating a driving timing of a touch sensor according to an embodiment; [Figure 137a] 10 is a diagram illustrating driving timing of a touch sensor according to an embodiment. [Figure 137b] 10 is a diagram illustrating driving timing of a touch sensor according to an embodiment. [Figure 138a] 10 is a diagram illustrating driving timing of a touch sensor according to an embodiment. [Figure 138b] 10 is a diagram illustrating driving timing of a touch sensor according to an embodiment. [Figure 139a] 10 is a diagram illustrating driving timing of a touch sensor according to an embodiment. [Figure 139b] 10 is a diagram illustrating driving timing of a touch sensor according to an embodiment. [Figure 140a]10 is a diagram illustrating driving timing of a touch sensor according to an embodiment. [Figure 140b] 10 is a diagram illustrating driving timing of a touch sensor according to an embodiment. [Figure 141] 1 is a diagram illustrating the effect of noise on the touch sensing performance of an electronic device. [Figure 142] 10 is a flow diagram illustrating a touch detection method while a touch sensing unit operates in a second touch driving mode, according to an embodiment. [Figure 143] 143 is a diagram illustrating a method of filtering noise in the touch detection method of FIG. 142. [Figure 144] 10 is a waveform diagram showing an example in which the touch sensing unit outputs first and second driving signals having different phases. FIG. [Figure 145] 10 is a waveform diagram showing an example in which the touch sensing unit outputs first and second driving signals having different phases. FIG. [Figure 146] 10 is a waveform diagram showing an example in which the touch sensing unit outputs first and second driving signals having different phases. FIG. [Figure 147] 10 is a waveform diagram showing an example in which the touch sensing unit outputs first and second driving signals having different phases. FIG. [Figure 148] 10 is a flowchart illustrating a method for controlling a touch sensing unit according to an embodiment. [Figure 149] 10 is a diagram illustrating an example of applying a driving signal according to a method of controlling a touch sensing unit; [Figure 150] FIG. 4 is a waveform diagram showing a first example of a driving signal according to a control method for a touch device. [Figure 151] 151 is a diagram showing an example in which the driving signal of FIG. 150 is applied. [Figure 152] 151 is a diagram showing an example in which the driving signal of FIG. 150 is applied. [Figure 153] 151 is a diagram showing an example in which the driving signal of FIG. 150 is applied. [Fig. 154] FIG. 10 is a waveform diagram showing a second example of a drive signal according to the method for controlling the touch sensing unit. [Figure 155] 155 is a diagram showing an example in which the driving signal of FIG. 154 is applied. [Figure 156] 155 is a diagram showing an example in which the driving signal of FIG. 154 is applied. [Figure 157] 155 is a diagram showing an example in which the driving signal of FIG. 154 is applied. [Figure 158] FIG. 10 is a waveform diagram showing a third example of a driving signal according to the method for controlling a touch device. [Figure 159] 159 is a diagram showing an example in which the driving signals of FIG. 158 are applied. [Figure 160] 159 is a diagram showing an example in which the driving signals of FIG. 158 are applied. [Figure 161] 159 is a diagram showing an example in which the driving signals of FIG. 158 are applied. [Figure 162] 159 is a diagram showing an example in which the driving signals of FIG. 158 are applied. [Figure 163] 1 is a flow chart illustrating a method for driving an electronic device according to an embodiment; [Fig. 164] FIG. 164 is a waveform diagram showing an example of a drive signal according to the drive method of FIG. 163. [Figure 165] 10 is a flowchart illustrating a method of driving an electronic device according to another embodiment. [Figure 166] FIG. 166 is a waveform diagram showing an example of a drive signal according to the drive method of FIG. 165. [Figure 167] FIG. 166 is a waveform diagram showing an example of a drive signal according to the drive method of FIG. 165. [Figure 168] 1 is a flow chart illustrating a method for controlling an electronic device according to an embodiment. [Figure 169] 1 is a diagram illustrating an arrangement of a touch sensor and a loop coil of an electronic device according to an embodiment; [Figure 170] 10 is a diagram illustrating a driving signal applied to a loop coil by a coil driver and a resonance signal of a stylus pen according to an embodiment; [Figure 171] 10 is a diagram showing a driving signal applied to a loop coil by a coil driver and a resonance signal of a stylus pen according to another embodiment; [Fig. 172]10 is a diagram showing a driving signal applied to a loop coil by a coil driver and a resonance signal of a stylus pen according to another embodiment; [Fig. 173] 5A to 5C are waveform diagrams illustrating drive signals according to various aspects of an embodiment. [Fig. 174] 5A to 5C are waveform diagrams illustrating drive signals according to various aspects of an embodiment. [Figure 175] 5A to 5C are waveform diagrams illustrating drive signals according to various aspects of an embodiment. [Figure 176] 5A to 5C are waveform diagrams illustrating drive signals according to various aspects of an embodiment. [Figure 177] 10 is a diagram illustrating in more detail the touch sensing unit 260 operating in the first period T1. [Figure 178] 178 is a diagram illustrating in more detail the operation of the first and second driving / receiving units 2620 and 2622 in the first period T1 of FIG. 177. [Figure 179] 10 is a diagram showing the touch device 10 operating in a second sub-period T22 of a second period T2. [Figure 180] FIG. 1 is a conceptual diagram illustrating a stylus pen and a touch sensor. [Figure 181] FIG. 1 is a detailed diagram specifically illustrating a stylus pen and an electronic device. [Figure 182] FIG. 2 is a conceptual diagram specifically illustrating an inductor portion of the stylus pen. [Figure 183] 10 is a graph for explaining the inductance L and Q value in the design of the inductor section. [Figure 184] 1 is a diagram illustrating types of wires according to an embodiment; [Figure 185] 1 is a diagram illustrating types of wires according to an embodiment; [Figure 186] 10(a) and 10(b) are diagrams for explaining two types of multi-layer winding methods. [Figure 187] 1 is a diagram showing the Q values ​​of inductors 1 and 2 measured while changing the frequency using a Keysight Technologies E4980A precision LCR meter. [Figure 188] 10 is a diagram showing the Q values ​​of inductors 3 to 5 measured while changing the frequency using a Keysight Technologies E4980A precision LCR meter. [Figure 189] 1 is a diagram showing the Q values ​​of inductors 6 and 7 measured while changing the frequency using a Keysight Technologies E4980A precision LCR meter. [Figure 190] 1 is a diagram illustrating an inductor unit according to an embodiment; [Figure 191] 10 is a graph showing the maximum amplitude of a resonance signal when the inductor section 14 includes only the ferrite core 15 and the coil 16. [Figure 192] 10 is a graph showing the maximum amplitude of a resonance signal when the inductor section 14 includes a ferrite core 15, a bobbin 141, and a coil 16. [Figure 193] The equivalent circuit of a system in which two thin-diameter inductors are connected in series and a capacitor is connected in parallel between both ends of the two inductors is shown. [Figure 194] 1 is a diagram showing an equivalent circuit of a system in which two LC resonant circuits are connected in series (hereinafter referred to as an "LCLC resonant circuit") and two resonant signals are combined and output. [Figure 195] 10 is a diagram showing touch input by hovering a stylus pen; [Figure 196] FIG. 1 is a conceptual diagram illustrating a stylus pen and an electronic device when the stylus pen is held. [Figure 197] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device when the stylus pen is held. [Figure 198] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device when the stylus pen is held. [Figure 199] FIG. 1 is a schematic circuit diagram showing a stylus pen and an electronic device when the stylus pen is held. [Figure 200]FIG. 1 is a conceptual diagram showing a stylus pen with an LLC structure. [Figure 201] FIG. 1 is a conceptual diagram showing a stylus pen. [Figure 202] 202 is an illustrative diagram showing eddy currents generated in the stylus pen shown in FIG. 201. [Figure 203] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 204] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 205] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 206] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 207] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 208] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 209] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 210] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 211] FIG. 1 is a conceptual diagram showing the structure of a stylus pen according to an embodiment. [Figure 212] 10A and 10B are conceptual diagrams illustrating a blocking member structure of the stylus pen according to the embodiment. [Figure 213] 1 is a conceptual diagram illustrating a blocking member structure of a stylus pen according to an embodiment. [Figure 214] 1 is a diagram illustrating a touch input by hovering a stylus pen according to an embodiment; [Figure 215] 2 is a diagram illustrating a structure of a body of a stylus pen according to an embodiment; [Figure 216] 2 is a diagram illustrating a structure of a body of a stylus pen according to an embodiment; [Figure 217] 2 is a diagram illustrating a structure of a body of a stylus pen according to an embodiment; [Figure 218] FIG. 1 is a conceptual diagram illustrating a stylus pen according to an embodiment. [Figure 219] FIG. 1 is a conceptual diagram showing a stylus pen including resonant circuits that resonate with drive signals having different frequencies. [Figure 220] 1 is a flow chart illustrating a method for controlling an electronic device according to an embodiment. [Figure 221] 221 is a waveform diagram showing an example of a drive signal and a resonance signal according to the electronic device control method of FIG. 220. [Figure 222] 10 is a flowchart illustrating a method for controlling an electronic device 2 according to another embodiment. [Figure 223] FIG. 223 is a waveform diagram showing the drive signals according to the electronic device control method of FIG. 222. [Figure 224] 10(a) and 10(b) are diagrams showing the layout of the touch sensor and the loop coil. [Figure 225] 1 is a diagram showing an arrangement of touch sensors and loop coils; [Figure 226] 1 is a diagram showing an arrangement of touch sensors and loop coils; [Figure 227] This is a diagram showing in more detail the arrangement of the touch sensor and loop coil of Figure 225. [Figure 228] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to an embodiment; [Figure 229] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to an embodiment; [Figure 230] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to an embodiment; [Figure 231] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to an embodiment; [Figure 232] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to an embodiment; [Figure 233] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to an embodiment; [Figure 234] 10 is a graph comparing touch signals and noise signals in an embodiment and a comparative example. [Figure 235] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to other embodiments; [Figure 236] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to other embodiments; [Figure 237] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to other embodiments; [Figure 238] 10A and 10B are diagrams illustrating various arrangements of touch sensors and loop coils according to other embodiments; [Figure 239] FIG. 1 is a block diagram illustrating a touch sensor and a host according to the present disclosure. [Figure 240] 10 is a diagram illustrating an example of touch data provided from a touch sensor to a host. DETAILED DESCRIPTION OF THE INVENTION

[0364] Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. However, this is not intended to limit the technology described in the present document to a specific embodiment, but should be understood to include various modifications, equivalents, and / or alternatives of the embodiments of the present document. In connection with the description of the drawings, similar reference numerals may be used for similar components.

[0365] Furthermore, the size and thickness of each component shown in the drawings are arbitrarily shown for the convenience of explanation, and the present invention is not necessarily limited to those shown. Thicknesses are exaggerated in the drawings to clearly show various layers and regions. Also, in the drawings, the thicknesses of some layers and regions are exaggerated for the convenience of explanation.

[0366] Furthermore, when a layer, film, region, plate, or other part is said to be "on" a different part, this includes not only the case where it is "directly on" the different part, but also the case where there is a different part in between. Conversely, when a part is said to be "directly on" a different part, it means that there is no different part in between. Furthermore, being "on" a reference part means being located above or below the reference part, and does not necessarily mean being located "on" the side opposite to gravity.

[0367] In this document, the terms "have," "may have," "include," or "may include" indicate the presence of a given feature (e.g., a value, function, operation, or component such as a part) and do not exclude the presence of additional features.

[0368] In this document, phrases such as "A or B," "at least one of A and / or B," or "one or more of A and / or B" may 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 all 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.

[0369] Terms such as "first," "second," "first," or "second" used herein may modify various components regardless of order and / or importance, and are used only to distinguish one component from another, not to limit the component. For example, a first user device and a second user device may refer to different user devices regardless of order or importance. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the scope of the rights described herein.

[0370] When a component (e.g., a first component) is referred to as being "operatively or communicatively coupled with" or "connected to" another component (e.g., a second component), it should be understood that a component may be directly coupled to a different component or may be coupled through another component (e.g., a third component). Conversely, when a component (e.g., a first component) is referred to as being "directly coupled with" or "directly connected to" another component (e.g., a second component), it should be understood that there is no other component (e.g., a third component) between the component and the different component.

[0371] As used herein, the phrase "configured to" may be used alternatively, depending on the context, e.g., "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 that is "specifically designed to." Instead, in some contexts, the phrase "device configured to" may mean that the device is "capable of" working with different devices or components. For example, the phrase "a processor configured to perform A, B, and C" may refer to a dedicated processor for performing those operations (e.g., an embedded processor) or a general-purpose processor (e.g., a CPU or application processor) that can perform those operations by executing one or more software programs stored in a memory device.

[0372] The terms used in this document are merely used to describe particular embodiments and may not be intended to limit the scope of other embodiments. A singular expression may include a plural expression unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the art described in this document. Terms used in this document that are defined in a general dictionary may be interpreted as meanings that are identical to or similar to the meanings they have in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined in this document. In some cases, even terms defined in this document may not be interpreted to exclude embodiments of this document.

[0373] An electronic device according to various embodiments of the present document may include, for example, at least one of a smartphone, a tablet personal computer, a mobile phone, a video phone, an e-book reader, a laptop personal computer, a netbook computer, a mobile medical device, a camera, or a wearable device. According to various embodiments, the wearable device may include at least one of an accessory type (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lenses, or a head-mounted device (HMD)), a textile or clothing integrated type (e.g., electronic clothing), a body-attached type (e.g., a skin pad or a tattoo), or a biologically implanted type (e.g., an implantable circuit).

[0374] Hereinafter, an electronic device, a stylus pen, and a driving method thereof according to embodiments will be described with reference to the necessary drawings.

[0375] In the case of an active stylus pen, the amplitude of the resonant signal in the resonant circuit built in the stylus pen must be large in order for power to be efficiently transferred to the battery in a wireless charging method. On the other hand, in the resonance method of a passive stylus pen, the amplitude of the resonant signal in the resonant circuit built in the stylus pen must be large in order for the touch sensor to more accurately identify touches by the stylus pen. Therefore, it is very important to transfer a signal of the same frequency as the resonant frequency of the resonant circuit of the stylus pen to the stylus pen so as to generate the maximum resonant signal.

[0376] 1(a) and 1(b) are conceptual diagrams showing a stylus pen and an electronic device, and FIG. 2 is a block diagram showing a schematic diagram of the electronic device.

[0377] As shown in (a) and (b) of Figures 1, the stylus pen 10, 10' can receive signals output from the electronic device 2, 2' or the touchscreen 20, 20' near the touchscreen 20, 20' of the electronic device 2, 2' and transmit signals to the touchscreen 20, 20'.

[0378] The electronic device 2, 2' may include at least one of a portable communication device (e.g., a smartphone or a tablet PC), a computer device, a portable multimedia device, a portable medical device, a wearable device, or a consumer electronic device. The electronic device 2 may also be a flexible device or a flexible display device. The electronic device 2 may also be a touch device capable of touch input.

[0379] In the rectangular foldable electronic device 2' shown in (b) of Figure 1 or components such as the touch screen 20' included therein, the long side located on the left side of the plane will be referred to as the first long side LS1, the long side located on the right side will be referred to as the second long side LS2, the short side located on the upper side will be referred to as the first short side SS1, and the short side located on the lower side will be referred to as the second short side SS2.

[0380] The foldable electronic device 2' may be folded along a predetermined folding direction based on a folding axis AXIS_F that intersects the first short side SS1 and the second short side SS2. That is, the foldable electronic device 2' may be capable of transitioning between a folded state and an unfolded state along the folding direction based on the folding axis AXIS_F.

[0381] As shown in FIG. 2, the electronic devices 2 and 2′ shown in FIGS. 1(a) and 1(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. The components shown in FIG. 2 are not essential for implementing an electronic device, and therefore the electronic devices described in this disclosure may have more or fewer components than those listed above. For convenience of explanation, the following description will be given using the electronic device 2 of FIG. 1(a) as an example. Therefore, it should be noted that the contents described below can also be applied to the electronic device 2′ of FIG. 1(b).

[0382] More specifically, among the components, the wireless communication unit 210 may include one or more modules that enable wireless communication between the electronic device 2 and a wireless communication system, between the electronic device 2 and another electronic device 2, or between the electronic device 2 and an external server. The wireless communication unit 210 may also include one or more modules that connect the electronic device 2 to one or more networks. The wireless communication unit 210 may include a wireless internet module 211 and a short-range communication module 212.

[0383] The wireless internet module 211 refers to a module for wireless internet connection and may be built into the electronic device 2. The wireless internet module 211 transmits and receives wireless signals over a communication network using wireless internet technologies. Examples of wireless internet technologies include Wireless LAN (WLAN), Wireless Fidelity (Wi-Fi), Wireless Fidelity Direct (Wi-Fi), Digital Living Network Alliance (DLNA®), Wireless Broadband (WiBro), World Interoperability for Microwave Access (WiMAX), High Speed ​​Downlink Packet Access (HSDPA), High Speed ​​Uplink Packet Access (HSUPA), Long Term Evolution (LTE), and Long Term Evolution-Advanced (LTE-A). The wireless internet module 211 transmits and receives data using at least one of the wireless internet technologies, including technologies not listed above.

[0384] The short-range communication module 212 may support short-range communication using at least one of 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 (Wireless USB) technologies. The short-range communication module 212 may support wireless communication between the electronic device 2 and a wireless communication system, between the electronic device 2 and a wireless communication-enabled device, or between the touch sensor 2 and a network in which an external server is located, via a wireless area network. The short-range wireless communication network may be a wireless personal area network.

[0385] Here, the wireless communication enabled device may be a mobile terminal (e.g., a smartphone, tablet PC, notebook, etc.) capable of exchanging data with (or linking to) the electronic device 2 according to the present invention. The short-range communication module 212 can detect (or recognize) a wireless communication enabled device that is capable of communicating with the electronic device 2 in the vicinity of the electronic device 2. Furthermore, if the detected wireless communication enabled device is a device authenticated to communicate with the electronic device 2 according to an embodiment, the control unit 270 can transmit at least a portion of data processed by the electronic device 2 to the wireless communication enabled device via the short-range communication module 212. Therefore, a user of the wireless communication enabled device can use the data processed by the electronic device 2 via the wireless communication enabled device.

[0386] The memory 220 also stores data supporting various functions of the electronic device 2. The memory 220 may store a number of application programs (or applications) run by the electronic device 2, as well as data and commands for the operation of the electronic device 2.

[0387] The interface unit 230 serves as a passageway for various types of external devices connected to the electronic device 2. The interface unit 230 may include at least one of a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, and an earphone port.

[0388] The power supply unit 240, under the control of the control unit 270, receives an external power source or an internal power source and supplies power to each component included in the electronic device 2. The power supply unit 240 includes a battery, which may be a built-in battery or a replaceable battery.

[0389] The display unit 250 displays (outputs) information processed by the electronic device 2. For example, the display unit 250 may display execution screen information of an application program run on the electronic device 2, or UI (User Interface) or GUI (Graphical User Interface) information based on such execution screen information.

[0390] The display unit 250 may include a liquid crystal display (LCD), an organic light-emitting diode (OLED), an e-ink display, a quantum-dot light-emitting display, a micro LED (Light-emitting diode) display, or the like.

[0391] The display unit 250 includes a display panel 251 for displaying an image, and a display controller 252 connected to the display panel 251 for supplying a signal to the display panel 251 for displaying an image.

[0392] For example, the display panel 251 may include a plurality of pixels connected to signal lines such as a plurality of scan lines and a plurality of data lines, and a scan driver that supplies scan signals to the scan lines.

[0393] The display controller 252 may include a data driving IC that generates data signals to be applied to the data lines, a timing controller that processes image signals and controls the overall operation of the display unit 250, a power management IC, and the like.

[0394] The touch sensing unit 260 may sense a touch (or touch input) applied to a touch area using a capacitance method. For example, the touch sensing unit 260 may be configured to convert a change in capacitance, voltage, or current generated at a specific location into an electrical input signal. The touch sensing unit 260 may be configured to detect a position, area, capacitance, etc., of a touch object that applies a touch to the touch area on the touch sensing unit 260. Here, the touch object is an object that applies a touch to the touch sensor, and may be, for example, a body part of a user (e.g., a finger, a palm), a passive or active stylus pen 10, etc.

[0395] The touch sensing unit 260 includes a touch sensor 261 where a touch electrode is located, and a touch controller 262 that applies a driving 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.

[0396] In FIG. 2 , the component designated as touch sensing unit 260 is designated in terms of its operation relative to other components, such as a display unit. In the following description, the term "unit" may be used to express an operation relative to other components, the term "module" may be used to express a modularized production of the component, the term "device" may be used to express a component implemented as a form of a product, the term "sensor" may be used to express the physical operation of the component, and the term "panel" may be used to express a production process. The terms "unit," "module," "device," "sensor," and "panel" may be used in terms of each concept to facilitate understanding of the present invention by those skilled in the art, and differences in expression do not limit the scope of the present invention.

[0397] The touch controller 262 can output touch coordinate information in response to a touch input sensed by the touch sensor 261. In addition, the touch controller 262 can change the frequency of a driving signal in response to the result of the touch sensing.

[0398] In one embodiment, the touch controller 262 may include a driver connected to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes to apply a drive signal, a receiver connected to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes to receive a sensing signal, and an MCU (micro control unit) that controls the operation of the driver and receiver and obtains a touch position using the sensing signal output from the receiver.

[0399] In another embodiment, the touch controller 262 may include a first driver / receiver connected to a plurality of first touch electrodes to apply driving signals and receive sensing signals, a second driver / receiver connected to a plurality of second touch electrodes to apply driving signals and receive sensing signals, and an MCU that controls the operation of the driver / receiver and obtains a touch position using sensing signals output from the driver / receiver.

[0400] The display panel 251 and the touch sensor 261 may be layered together or integrated together, and may be referred to as a touch screen 20 .

[0401] 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 disposed near the touch screen 20 or at any position within the electronic device 2. The loop coil 264 may also be configured as an antenna for a near-field communication module 212 such as RFID or NFC. The drive signal may include an AC voltage or an AC current having a predetermined frequency.

[0402] Here, the loop coil 264 can transmit power to the outside by receiving a drive signal from the coil driver 253. Therefore, the loop coil 264 can also be called a transmission electrode unit. Also, the coil driver 253 can also be called a transmission driver.

[0403] 1 and 2 again, the controller 270 may control driving of the electronic device 2 and output touch coordinate information in response to the touch sensing result of the electronic device 2. The controller 270 may also change the frequency of the driving signal in response to the touch sensing result.

[0404] In addition to operations related to the application programs, the control unit 270 typically controls the overall operation of the electronic device 2. The control unit 270 processes signals, data, information, etc. input or output via the components described in detail above, and runs application programs stored in the memory 270 to provide or process appropriate information or functions to the user.

[0405] 2 in order to run the application program stored in the memory 270. Furthermore, the control unit 270 can operate at least two or more of the components included in the electronic device 2 in combination with each other to run the application program.

[0406] FIG. 3(a) is a plan view schematically illustrating a part of a display unit according to an embodiment, and FIG. 3(b) is a cross-sectional view taken along line II' of FIG. 3(a).

[0407] 3(a) and 3(b), the display panel 251 can display any visual information on its front surface, such as text, video, photos, 2D or 3D images, etc. The type of the display panel 251 is not particularly limited to a type that displays images.

[0408] In one embodiment, the display panel 251 is described as a panel having organic light emitting diodes as light emitting elements, but the type of the display panel 251 is not limited thereto, and other display panels may be used within the scope of the concept of the present invention.

[0409] The display panel 251 may have various shapes. For example, the display panel 251 may be a rectangle having two pairs of parallel sides. For convenience of explanation, the display panel 251 is shown as a rectangle having one pair of long sides and one pair of short sides.

[0410] However, the shape of the display panel 251 is not limited thereto, and the display panel 251 may have various shapes. For example, the display panel 251 may have various shapes such as a closed polygon having straight sides, a circle having curved sides, an ellipse, a semicircle having straight and curved sides, etc. At least some of the corners of the display panel 251 may have curved shapes.

[0411] The display panel 251 may be entirely or at least partially flexible.

[0412] The display panel 251 can display an image. The display panel 251 includes a display unit 204. The display unit 204 may include a display area DA where an image is displayed 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 provided in a form surrounding the display area DA. A plurality of pixels PX may be located in the display area DA, and a driver (see 210 in FIG. 4) for driving the plurality of pixels PX may be located in the non-display area NDA.

[0413] The display area DA may have a shape corresponding to the shape of the display panel 251. For example, the display area DA may have various shapes such as a closed polygon having straight sides, a circle or ellipse having curved sides, or a semicircle or semiellipse having straight and curved sides, similar to the shape of the display panel 251. In one embodiment of the present invention, the display area DA is assumed to be rectangular.

[0414] The display panel 251 may include a substrate 202 and a display portion 204 provided on the substrate 202 .

[0415] The substrate 202 may be made of various materials, such as glass, polymer metal, etc. The substrate 202 may be an insulating substrate made of a polymer organic material. Examples of insulating substrate materials containing a polymer organic material include polystyrene, polyvinyl alcohol, polymethyl methacrylate, polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, cellulose triacetate, and cellulose acetate propionate. However, the material of the substrate 202 is not limited to this, and the substrate 202 may be made of, for example, fiber glass reinforced plastic (FRP).

[0416] The display unit 204 may be disposed on the substrate 202. The display unit 204 may display information input by a user or information provided to a user as an image. The display unit 204 may include a plurality of pixels PX. The pixels PX may be organic light-emitting devices including an organic layer, but are not limited to this, and may be implemented in various forms such as liquid crystal devices, electrophoretic devices, and electrowetting devices. Each pixel PX is a minimum unit for displaying an image and may include an organic light-emitting device emitting white light and / or colored light. Each pixel PX may emit light of one of the following colors: red, green, blue, and white, but is not limited to these colors, such as cyan, magenta, and yellow. Each pixel PX may include a transistor (not shown) connected to a plurality of signal lines (not shown) and an organic light-emitting diode (OLED) electrically connected to the transistor.

[0417] The display driver 210 includes a scan driver and a data driver that supply signals to the pixels PX included in the display panel 251 .

[0418] The signal controller 220 may supply drive control signals and video data to the display driver 210 to control the video display operation of the display panel 251. Specifically, the signal controller 220 may generate drive control signals and video data using a video signal and a data enable signal supplied from an external video source. For example, the signal controller 220 may receive a video signal and a control signal from an external video source (not shown). The control signals may include a vertical synchronization signal that distinguishes frame intervals, a horizontal synchronization signal that distinguishes rows within a frame, a data enable signal that is high only during a data output interval, and a clock signal. The drive control signals may also include a scan drive control signal, a data drive control signal, etc.

[0419] The scan driver generates scan signals based on scan drive control signals provided by the signal controller 220 and outputs the scan signals to scan lines connected to the pixels PX. The data driver generates gray scale voltages according to image data provided by the signal controller 220 based on the data drive control signals received from the signal controller 220. The data driver outputs the gray scale voltages as data voltages to the data lines connected to the pixels PX. Meanwhile, the scan driver may be formed simultaneously with the pixels PX through a thin film process. For example, the scan driver may be implemented in the non-display area (NDA) in the form of an Amorphous Silicon TFT Gate driver circuit (ASG) or an Oxide Semiconductor TFT Gate driver circuit (OSC).

[0420] The touch sensor 261 may be attached to the display unit 204 in the form of a separate panel or film, or may be formed integrally with the display unit 204 .

[0421] The touch sensor 261 may include a plurality of touch sensing units TS for sensing the position of a user's touch. The touch sensing units TS can sense a touch using a mutual capacitance method or a self-capacitance method. The touch sensor 261 receives a driving signal from a touch controller (102 in FIG. 3). The touch controller 262 can receive a sensing signal from the touch sensor 261 that changes depending on the user's touch.

[0422] 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 surface of the display panel 251. For example, if the display panel 251 is rectangular, the window 103 may also have a corresponding rectangular shape. Alternatively, if the display panel 251 is circular, the window 103 may also have a corresponding circular shape.

[0423] An image displayed on the display panel 251 is transmitted to the outside through the window 103. The window 103 absorbs external impacts to prevent the display panel 251 from being damaged or malfunctioning due to the external impact. The external impact refers to an external force, which can be expressed as pressure, stress, etc., that causes defects in the display panel 251.

[0424] The window 103 may be entirely or at least partially flexible.

[0425] 4 is a block diagram of a part of the electronic device. Referring to FIG. 4, a display panel 251 is connected to a display driver 210, and a touch sensor 261 is connected to a touch controller 262.

[0426] The touch controller 262 may generate a driving signal to be output to the touch sensor 261 and may receive a sensing signal from the touch sensor 261. The touch controller 262 may determine the presence or absence of a touch input on the touch screen, the number of touch inputs, and the position of the touch input, using the driving signal and the sensing signal. The touch controller 262 may receive a horizontal synchronization signal, a scan driving control signal, a data driving control signal, and the like from the signal control unit 220. The touch controller 262 may adjust the frequency of the driving signal to be provided to the touch sensor 261 based on the horizontal synchronization signal. For example, the touch controller 262 may set the frequency of the driving signal to an integer multiple of two or more of the frequency of the horizontal synchronization signal.

[0427] Furthermore, the touch controller 262 may receive a sensing signal from the touch sensor 261 during a period in which the scan signal has a disable level, based on at least one of the horizontal synchronization signal and the scan drive control signal.

[0428] In addition, the touch controller 262 can receive a sensing signal from the touch sensor 261 during a period other than the period during which the data signal is applied to the data line of the display panel 251 based on at least one of the horizontal synchronization signal and the data drive control signal.

[0429] 4, the touch sensor 261 and the display panel 251 are shown as being separate from each other, but the present invention is not limited thereto. For example, the touch sensor 261 and the display panel 251 may be manufactured integrally.

[0430] The touch sensor 261 may be provided on at least one region of the display panel 251. For example, the touch sensor 261 may be provided on at least one surface of the display panel 251 so as to overlap the display panel 251. As an example, the touch sensor 261 may be disposed on one surface (e.g., the top surface) of the display panel 251 that faces an image output direction.

[0431] The touch sensor 261 may be formed directly on at least one of both surfaces of the display panel 251, or may be formed inside the display panel 251. For example, the touch sensor 251 may be formed directly on an outer surface of an upper substrate (or an encapsulation layer) or a lower substrate of the display panel 251 (e.g., an upper surface of the upper substrate or a lower surface of the lower substrate), or may be formed directly on an inner surface of the upper substrate or the lower substrate (e.g., a lower surface of the upper substrate or an upper surface of the lower substrate).

[0432] When the touch sensor 261 is formed directly on the sealing layer of the display panel 251, the total thickness of the sealing layer may be 4 um to 10 um.

[0433] The touch sensor 261 includes an active area AA capable of sensing a touch input and a non-active area NAA surrounding at least a portion of the active area AA. According to an embodiment, the active area AA may be disposed to correspond to the display area DA of the display panel 251, and the non-active area NAA may be disposed to correspond to the non-display area NDA of the display panel 251. For example, the active area AA of the touch sensor 261 may overlap the display area DA of the display panel 251, and the non-active area NAA of the touch sensor 261 may overlap the non-display area NDA of the display panel 251.

[0434] According to an embodiment, a plurality of touch sensing units TS are arranged in the active area AA, that is, the active area AA may be a touch sensing area capable of sensing a touch input by a user.

[0435] The plurality of touch sensing units TS includes at least one touch electrode for detecting a touch input, for example, a plurality of first touch electrodes and a plurality of second touch electrodes in the case of a mutual capacitance type. Specifically, one touch sensing unit TS may be a unit for detecting a change in capacitance formed by the intersection of one first touch electrode and one second touch electrode.

[0436] For example, the plurality of touch sensing units TS may include a plurality of touch electrodes arranged in a matrix in the case of a self-capacitance type. Specifically, one touch sensing unit TS may be a unit for detecting a change in capacitance of one touch electrode.

[0437] According to an embodiment, at least one touch electrode may be provided on a 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 electrodes and wirings provided on 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 a cathode electrode, a data line, a 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 a common electrode, a data line, a gate line, etc.

[0438] In this manner, 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. For example, at least one touch electrode of the touch sensor 261 may be arranged to overlap at least one of the electrodes and wiring of the display panel 251 on a plane, thereby generating a parasitic capacitance between the touch sensor 261 and the display panel 251.

[0439] Due to the coupling effect of such parasitic capacitance, signals from the display panel 251 may be transmitted to the touch sensor, particularly the touch sensor 261. For example, noise signals due to display driving signals (e.g., data signals, scan signals, light emission control signals, etc.) applied to the display panel 251 may flow into the touch sensor 261.

[0440] In the electronic device 2 according to an embodiment, the display panel 251 may be an organic light-emitting display panel including a thin film encapsulation layer, and the touch sensor 261 may be configured as an on-cell type sensor electrode in which at least one touch electrode is directly formed on one surface (e.g., the top surface) of the thin film encapsulation layer. In this case, at least one of the electrodes and wirings (e.g., a cathode electrode) included in the organic light-emitting display panel and at least one touch electrode are positioned adjacent to each other. This allows noise signals generated by driving the display to be transmitted to the touch sensor 261 with a relatively large intensity.

[0441] The noise signal transmitted to the touch sensor 261 may cause a ripple in the sensing signal, which may reduce the sensitivity of the touch sensor. Therefore, the present disclosure provides various embodiments that can improve the sensitivity of the touch sensor, which will be described in detail below.

[0442] Next, one embodiment of the display unit 250 shown in FIG. 2 will be described with reference to FIGS.

[0443] FIG. 5 is a block diagram illustrating one embodiment of the display unit 250 of FIG. 2, FIG. 6 is a diagram illustrating pixels of the display unit of FIG. 5, and FIG. 7 is a timing diagram illustrating an example of a driving signal for driving the display unit of FIG. 5.

[0444] As shown in FIG. 5, the display unit includes a display panel 251 including a plurality of pixels PX, a data driver 2522, a scan driver 2520, and a signal controller 2524.

[0445] The display panel 251 includes a plurality of pixels PX arranged in a matrix. Although not particularly limited, the plurality of scan lines S1 to Si extend substantially in the row direction in the pixel arrangement and are generally parallel to each other, and the plurality of data lines D1 to Dj extend substantially in the column direction and are generally parallel to each other.

[0446] Each of the plurality of pixels PX is connected to a corresponding one of the plurality of scan lines S1 to Si and a corresponding one of the plurality of data lines D1 to Dj connected to the display panel 251. Although not directly shown on the display panel 251 in FIG. 5, each of the plurality of pixels PX is connected to a power source connected to the display panel 251 and receives a first power supply voltage ELVDD and a second power supply voltage ELVSS.

[0447] Each of the plurality of pixels PX emits light at a predetermined luminance in response to a driving current supplied to the organic light emitting diode in accordance with a corresponding data signal transmitted via the plurality of data lines D1 to Dj.

[0448] The scan driver 2520 generates and transmits scan signals corresponding to each pixel through a plurality of scan lines S1 to Si, i.e., the scan driver 2520 transmits the scan signals through scan lines corresponding to each of the plurality of pixels included in each pixel row.

[0449] The scan driver 2520 receives a scan drive control signal CONT2 from the signal controller 2524 to generate a plurality of scan signals and sequentially supplies the scan signals to a plurality of scan lines S1 to Si connected to each pixel row. The scan driver 2520 also generates a common control signal and supplies the common control signal to a common control line connected to all of the pixels PX.

[0450] The data driver 2522 transmits data signals to each pixel via a plurality of data lines D1 to Dj.

[0451] The data driver 2522 receives a data drive control signal CONT1 from the signal controller 2524 and supplies corresponding data signals to the data lines D1 to Dj connected to the pixels included in each pixel row.

[0452] The signal controller 2524 converts an externally transmitted video signal into video data DATA and transmits it to the data driver 2522. The signal controller 2524 receives external control signals such as a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a clock signal, and a data enable signal, and generates and transmits control signals for controlling the scan driver 2520 and the data driver 2522. That is, the signal controller 2524 generates and transmits a scan drive control signal CONT2 for controlling the scan driver 2520 and a data drive control signal CONT1 for controlling the data driver 2522.

[0453] 6, the pixel PX_lk may include an organic light emitting diode OLED, a first transistor TR1, a second transistor TR2, and a storage capacitor Cst. The pixel PX_lk may be located in the first pixel row and the kth pixel column. For convenience of explanation, each transistor is assumed to be a PMOS transistor.

[0454] The first transistor TR1 may be a driving transistor. In one embodiment, the first transistor TR1 may include a gate coupled to a first node N1, a source coupled to a first power supply voltage ELVDD, and a drain coupled to an anode of the organic light emitting diode OLED.

[0455] The driving current corresponds to the voltage difference between the gate and source of the first transistor TR1, and changes in response to the voltage of the data signal applied to the data line D1.

[0456] The second transistor TR2 may be turned on in response to a level of a 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 have 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. The second transistor TR2 transmits a data voltage corresponding to a data signal D[l] transmitted through the first data line D1 to the first node N1 in response to a corresponding scan signal S[k] transmitted through the k-th scan line Sk.

[0457] The storage capacitor Cst is coupled between the first power supply voltage ELVDD and the first node N1. In one embodiment, the storage capacitor Cst may include one electrode coupled to the first power supply voltage ELVDD and another electrode coupled to the first node N1.

[0458] The organic light emitting diode OLED may emit light by a driving current flowing from the first transistor TR1. In one embodiment, the organic light emitting diode OLED may include an anode coupled to the drain of the first transistor TR1 and a cathode coupled to the second power supply voltage ELVSS.

[0459] As shown in FIG. 7, the pulse period of the vertical synchronization signal Vsync may be one frame period (1 FRAME) of the display panel 251 according to the display frame rate.

[0460] During one frame period (1 FRAME), the data driver 2522 may apply enable level data signals to the plurality of data lines D1 to Dj in synchronization with the horizontal synchronization signal Hsync. For example, at each pulse of the horizontal synchronization signal Hsync, the data driver 2522 applies data signals corresponding to pixels connected to a scan line to which a scan signal having a low level voltage L is applied to all of the plurality of data lines D1 to Dj.

[0461] During one frame period (1 FRAME), the scan driver 2520 is synchronized with the horizontal synchronization signal Hsync and sequentially applies scan signals (S[1], S[2], ..., S[k-1], S[k]) of a low level voltage L to the plurality of scan lines S1 to Si. For example, the scan driver 2520 applies a scan signal of a low level voltage L to one corresponding scan line for each pulse of the horizontal synchronization signal Hsync.

[0462] One horizontal period 1H, that is, within a certain period of the pulse of the horizontal synchronization signal Hsync, there is a period dwp during which a data signal is applied to the data line and a period sp during which the scan signal is at low level voltage L.

[0463] In relation to the periods dwp and sp, a pixel connected to the scan line Sk and the data line D1 will be described as an example.

[0464] One horizontal period 1H begins at t00. At t01, a data signal DATA[k] is applied to the data line D1. At t10, the scan signal S[k] applied to the scan line Sk is changed to a low-level voltage L.

[0465] The time t10 when the scan signal S[k] is changed to the low-level voltage L and the time t01 when the data signal DATA[k] starts to be applied to the data line Dl may be the same or different. For example, taking into account the RC delay of the data line Dl, the data signal DATA[k] may be applied to the data line Dl before the scan signal S[k] is changed to the low-level voltage L.

[0466] At t11, the scan signal S[k] is changed to a high level voltage H. At t12, the application of the data signal DATA[k] to the data line D1 is stopped. At t22, one horizontal period 1H ends.

[0467] The time t11 when the scan signal S[k] is changed to the high-level voltage H and the time t12 when the application of the data signal DATA[k] to the data line Dl is stopped may be the same or different. For example, after the scan signal S[k] is changed to the high-level voltage H, the application of the data signal DATA[k] to the data line Dl may be stopped.

[0468] The data entry period TA includes the period dwp and the period sp. Specifically, the data entry period TA is from the earlier of the start of the period dwp or the start of the period sp to the later of the end of the period dwp or the end of the period sp. For example, the data entry period TA may be the period from t01 to t12.

[0469] Next, other aspects of the display unit will be described with reference to FIGS.

[0470] FIG. 8 is a block diagram illustrating another example of the display unit of FIG. 2, and FIG. 9 is a diagram illustrating a pixel of the display unit of FIG.

[0471] As shown in FIG. 8, the display unit includes a display panel 251 including a plurality of pixels PX, a data driver 2522, a scan driver 2520, a light emission control driver 2526, and a signal controller 2524.

[0472] The display panel 251 includes a plurality of pixels PX arranged in a matrix. Although not particularly limited, the plurality of scan lines S0 to Si and the plurality of emission control lines E1 to Ei extend substantially in the row direction in the pixel arrangement and are generally parallel to each other, and the plurality of data lines D1 to Dj extend substantially in the column direction and are generally parallel to each other.

[0473] Each of the pixels PX is connected to two corresponding scan lines among the scan lines S0 to Si, one corresponding light-emitting control line among the light-emitting control lines E1 to Ei, and one corresponding data line among the data lines D1 to Dj connected to the display panel 251. Although not directly shown on the display panel 251 in FIG. 8, each of the pixels PX is connected to a power source connected to the display panel 251 and receives a first power supply voltage ELVDD, a second power supply voltage ELVSS, and an initialization voltage VINT.

[0474] Each of the pixels PX of the display panel 251 is connected to two corresponding scan lines. That is, the pixel is connected to the scan line corresponding to the pixel row in which the pixel is included and the scan line corresponding to the pixel row immediately preceding the pixel row. Each of the pixels included in the first pixel row may be connected to the first scan line S1 and the dummy scan line S0. Each of the pixels included in the i-th pixel row is connected to the i-th scan line Si corresponding to the i-th pixel row and the i-th scan line Si-l corresponding to the i-th pixel row immediately preceding the i-th pixel row.

[0475] Each of the plurality of pixels PX emits light of a predetermined luminance in response to a driving current supplied to an organic light emitting diode in accordance with a corresponding data signal transmitted via the plurality of data lines D1 to Dj.

[0476] The scan driver 2520 generates and transmits scan signals corresponding to each pixel PX through a plurality of scan lines S0 to Si, i.e., the scan driver 2520 transmits the scan signals through scan lines corresponding to each of the plurality of pixels PX included in each pixel row.

[0477] The scan driver 2520 receives a scan drive control signal CONT2 from the signal controller 2524, generates a plurality of scan signals, and sequentially supplies the scan signals to a plurality of scan lines S0 to Si connected to each pixel row.

[0478] The data driver 2522 transmits data signals to each pixel via a plurality of data lines D1 to Dj.

[0479] The data driver 2522 receives a data drive control signal CONT1 from the signal controller 2524 and supplies corresponding data signals to the data lines D1 to Dj connected to the pixels included in each pixel row.

[0480] The light emission control driver 2526 is connected to a plurality of light emission control lines E1 to Ei connected to the display panel 251 including a plurality of pixels PX arranged in a matrix. That is, a plurality of light emission control lines E1 to Ei extending substantially parallel to each other and facing each of the plurality of pixels in the row direction connect each of the plurality of pixels PX to the light emission control driver 2526.

[0481] The light emission control driver 2526 generates and transmits light emission control signals corresponding to each pixel via a plurality of light emission control lines E1 to Ei. Each pixel that receives the light emission control signal is controlled to emit an image according to the image data signal in response to the light emission control signal. That is, the operation of the light emission control transistors (TR5 and TR6 in FIG. 9) included in each pixel is controlled in response to the light emission control signal transmitted through the corresponding light emission control line, so that the organic light emitting diodes connected to the light emission control transistors may or may not emit light at a brightness according to a driving current corresponding to the data signal.

[0482] A first power supply voltage ELVDD, a second power supply voltage ELVSS, and an initialization voltage VINT are supplied to each pixel PX of the display panel 251. The first power supply voltage ELVDD may be a predetermined high-level voltage, and the second power supply voltage ELVSS may be a voltage lower than the first power supply voltage ELVDD or a ground voltage. The initialization voltage VINT may be set to a voltage value equal to or lower than the second power supply voltage ELVSS.

[0483] The voltage values ​​of the first power supply voltage ELVDD, the second power supply voltage ELVSS, and the initialization voltage VINT are not particularly limited.

[0484] The signal controller 2524 converts a plurality of externally transmitted video signals into a plurality of video data signals DATA and transmits them to the data driver 2522. The signal controller 2524 receives a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, and a clock signal, and generates and transmits control signals for controlling the operation of the scan driver 2520, the emission control driver 2526, and the data driver 2522. That is, the signal controller 2524 generates and transmits a data drive control signal CONT1 for controlling the data driver 2522, a scan drive control signal CONT2 for controlling the scan driver 2520, and an emission drive control signal CONT3 for controlling the operation of the emission control driver 2526.

[0485] 9, pixel PX_ab includes an organic light emitting diode (OLED), a storage capacitor Cst, and first to seventh transistors TR1 to TR7. Pixel PX_ab may be located in the a-th pixel row and the b-th pixel column. For convenience of explanation, each transistor is assumed to be a PMOS transistor.

[0486] The first transistor TR1 has a gate connected to a first node N1, a source connected to a second node N2 to which the drain of the fifth transistor TR5 is connected, and a drain connected to a third node N3. A driving current flows through the first transistor TR1 in response to a corresponding data signal D[b].

[0487] The driving current corresponds to the voltage difference between the source and gate of the first transistor TR1, and changes in response to the data voltage of the applied data signal D[b].

[0488] The second transistor TR2 has a gate connected to the a-th scan line Sa, a source connected to the b-th data line Db, and a drain connected to a second node N2 to which the source of the first transistor TR1 and the drain of the fifth transistor TR5 are commonly connected. The second transistor TR2 transmits a data voltage corresponding to a data signal D[b] transmitted through the b-th data line Db to the second node N2 in response to a corresponding scan signal S[j] transmitted through the a-th scan line Sa.

[0489] The third transistor TR3 has a gate connected to the a-th scan line Sa and both ends connected to the gate and drain of the first transistor TR1, respectively. The third transistor TR3 operates in response to a corresponding scan signal S[j] transmitted through the a-th scan line Sa. When turned on, the third transistor TR3 connects the gate and drain of the first transistor TR1, thereby diode-connecting the first transistor TR1.

[0490] When the first transistor TR1 is diode-connected, a voltage compensated for by the threshold voltage of the first transistor TR1 from the data voltage applied to the source of the first transistor TR1 is applied to the gate of the first transistor TR1. Since the gate of the first transistor TR1 is connected to one electrode of the storage capacitor Cst, the voltage is maintained by the storage capacitor Cst. Because a voltage compensated for the threshold voltage of the first transistor TR1 is applied and maintained to the gate, the driving current flowing through the first transistor TR1 is not affected by the threshold voltage of the first transistor TR1.

[0491] 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. The fourth transistor TR4 transmits the initialization voltage VINT 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 may 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] previously transmitted to the (a-1)th scan line Sa-1 corresponding to the previous pixel row of the jth pixel row including the pixel PX_ab.

[0492] At this time, the voltage value of the initialization voltage VINT is not limited, but may be set to a low voltage value so that the gate voltage of the first transistor TR1 can be sufficiently low to be initialized. That is, the gate of the first transistor TR1 is initialized to the initialization voltage VINT during a period in which the (a-1)th scan signal S[a-1] is transmitted to the gate of the fourth transistor TR4 at a gate-on voltage level.

[0493] 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.

[0494] The sixth transistor TR6 includes a gate connected to the j-th light emitting control line Ej, a source connected to a third node N3, and a drain connected to an anode of the organic light emitting diode (OLED).

[0495] The fifth transistor TR5 and the sixth transistor TR6 operate in response to the jth light-emitting control signal E[j] transmitted through the jth light-emitting control line Ej. When the fifth transistor TR5 and the sixth transistor TR6 are turned on in response to the jth light-emitting control signal E[j], a current path is formed from the first power supply voltage ELVDD to the organic light-emitting diode (OLED) so that a driving current can flow. Then, the organic light-emitting diode (OLED) emits light in response to the driving current, thereby displaying an image of the data signal.

[0496] The storage capacitor Cst has one electrode connected to the first node N1 and another electrode connected to the first power supply voltage ELVDD. As described above, the storage capacitor Cst is connected between the gate of the first transistor TR1 and the first power supply voltage ELVDD, and therefore can maintain the voltage applied to the gate of the first transistor TR1.

[0497] The seventh 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.

[0498] The seventh transistor TR7 may transmit an initialization voltage VINT to the anode of the organic light emitting diode (OLED) in response to the (a-1)th scan signal S[a-1] previously transmitted to the (a-1)th scan line Sa-1 corresponding to the previous pixel row of the jth pixel row including the pixel PX_ab. The anode of the organic light emitting diode (OLED) is reset to a sufficiently low voltage by the transmitted initialization voltage VINT.

[0499] FIG. 10 is a diagram illustrating a touch sensing unit according to an embodiment.

[0500] The touch sensing unit 260 according to an embodiment includes a touch sensor 261 and a touch controller 262 that controls the touch sensor 261. The touch controller 262 may include a driver 2620 and a receiver 2622 that transmit and receive signals to and from the touch sensor 261, and a controller 2624.

[0501] The 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 touch sensor 261 may include a plurality of first touch electrodes 111-1 to 111-m extending in the second direction and a plurality of second touch electrodes 121-1 to 121-n extending in the first direction intersecting the second direction. In the 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.

[0502] The plurality of first touch electrodes 111-1 to 111-m are connected to a driver 2620, and the plurality of second touch electrodes 121-1 to 121-n are connected to a receiver 2622. Although the driver 2620, receiver 2622, and controller 2624 are shown as separate components in FIG. 10, they may be implemented as a single module, unit, or chip, and are not limited thereto.

[0503] The driving unit 2620 may apply driving signals to the plurality of first touch electrodes 111-1 to 111-m, and the receiving unit 2622 may receive sensing signals from the plurality of second touch electrodes 121-1 to 121-n.

[0504] Although the touch sensing unit 260 has been described above as being implemented using a mutual capacitance method, the touch sensing unit 260 may also be implemented using a self-capacitance method. It would be easy for an ordinary engineer to appropriately 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, add new components, or omit some components to modify them to suit the self-capacitance method.

[0505] FIG. 11 is a diagram illustrating a touch sensing unit 260 according to an embodiment, and FIG. 12 is a diagram illustrating an example in which a stylus pen touches the touch sensing unit 260 according to an embodiment.

[0506] 11, a touch sensing unit 260 according to an embodiment includes a touch panel 2620 and a touch controller 262 that controls the touch sensor 261. The touch controller 262 may include first and second driving / receiving units 2620′ and 2622′ that transmit and receive signals to and from the touch sensor 261, and a control unit 2624.

[0507] The touch sensor 261 may include a plurality of touch electrodes 111-1 to 111-m, 121-1 to 121-n.

[0508] The touch sensing unit 260 of this embodiment does not need to include the coil driver 263 and the loop coil 264 .

[0509] The touch sensor 261 includes a plurality of first touch electrodes 111-1 to 111-m extending in a first direction and a plurality of second touch electrodes 121-1 to 121-n extending in a second direction intersecting the first direction. In the touch sensor 261, the plurality of first touch electrodes 111-1 to 111-m may be arranged along the second direction, and the plurality of second touch electrodes 121-1 to 121-n may be arranged along the first direction. Although the shape of the touch sensor 261 is shown as a rectangle in FIG. 1, the shape is not limited thereto.

[0510] 11, the shape of the touch sensor 261 is shown as a rectangle, but is not limited thereto. The shape of the touch sensor 261 may be any shape. For example, the any shape may be a circle, an ellipse, a polygon with a portion of a circle, or a polygon other than a rectangle. The any shape may include a shape of a figure with a portion of a curve.

[0511] The touch sensing unit 260 may be used to sense a touch input (direct touch or proximity touch) from a touch object. The touch sensing unit 260 may sense a touch input from a stylus pen 10 in proximity to a touch sensor 261.

[0512] 12(a) and 12(b), the touch sensor 261 further includes an insulating layer 23 and a window 22. A touch electrode layer 21 may be located on the insulating layer 23. 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. A window 22 may be located on the touch electrode layer 21. In FIGS. 12(a) and 12(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 shown to be located on the same layer, but may be located on different layers, and are not limited thereto.

[0513] The plurality of first touch electrodes 111-1 to 111-m are connected to a first driving / receiving unit 2620', and the plurality of second touch electrodes 121-1 to 121-n are connected to a second driving / receiving unit 2622'. Although the first driving / receiving unit 2620' and the second driving / receiving unit 2622' are shown separately in FIG. 11, the first driving / receiving unit 2620' and the second driving / receiving unit 2622' may be implemented as a single module, unit, or chip, and are not limited thereto.

[0514] The first driving / receiving unit 2620' can apply driving signals to the plurality of first touch electrodes 111-1 to 111-m through the plurality of touch channels. The first driving / receiving unit 2620' can also receive sensing signals from the plurality of first touch electrodes 111-1 to 111-m through the plurality of touch channels. Similarly, the second driving / receiving unit 2622' can apply driving signals to the plurality of second touch electrodes 121-1 to 121-n through the plurality of touch channels. The second driving / receiving unit 2622' can also receive sensing signals from the plurality of first touch electrodes 121-1 to 121-n through the plurality of touch channels.

[0515] That is, the first driver / receiver 2620' and the second driver / receiver 2622' may be a type of transceiver that transmits and receives signals.

[0516] When the first driver / receiver 2620' applies drive signals to the plurality of first touch electrodes 111-1 to 111-m, the touch channels corresponding to the plurality of first touch electrodes 111-1 to 111-m operate as drive channels. Also, when the plurality of first touch electrodes 111-1 to 111-m transmit sense signals to the first driver / receiver 2620', the touch channels corresponding to the plurality of first touch electrodes 111-1 to 111-m operate as sense channels. Similarly, when the second driver / receiver 2622' applies drive signals to the plurality of second touch electrodes 121-1 to 121-n, the touch channels corresponding to the plurality of second touch electrodes 121-1 to 121-n operate as drive channels. Furthermore, when the sensing signals are transmitted from the second touch electrodes 121-1 to 121-n to the second driving / receiving unit 2622', the touch channels corresponding to the second touch electrodes 121-1 to 121-n operate as sensing channels.

[0517] The drive signal may include a signal (for example, a sine wave, a square wave, etc.) having a frequency corresponding to the resonant frequency of the stylus pen 10. The resonant frequency of the stylus pen 10 depends on the design value of the resonant circuit section 12 of the stylus pen.

[0518] The touch sensing unit 260 may be used to sense touch input (direct touch or proximity touch) from a touch object. As shown in (a) of FIG. 12, the touch sensing unit 260 may sense touch input from a stylus pen 10 in proximity to a touch sensor 261.

[0519] 12(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 21 on the substrate, and a window 22 on the touch electrode 21.

[0520] 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. Although the touch electrode 21 is shown in one layer in Fig. 12(b), the first touch electrode and the second touch electrode may be located in different layers, and are not limited thereto.

[0521] A window 22 may be positioned on the touch electrode 21. The touch electrode 21, the conductive tip 11, and the window 22 may form a capacitance Cx. Therefore, a signal (resonance signal or active touch signal) generated by the stylus pen 10 may be transmitted to the touch electrode 21.

[0522] 12(a), the touch sensing unit 260 may be used to sense touch input (direct touch or proximity touch) from a touch object. As shown in FIG. 12(b), the touch sensing unit 260 may sense touch input from a stylus pen 10 in proximity to a touch sensor 261.

[0523] FIG. 13 is a diagram showing a case where a driving signal is applied to a stylus pen and a user's hand holding the stylus pen.

[0524] As shown in FIG. 13(a), the driving signal is transmitted to the resonant circuit section 12 via a capacitance formed between the conductive tip 11 of the stylus pen 10.

[0525] Now, assuming that a user holds the stylus pen 10 with his / her hand 30 and writes on the touch sensing unit 260, in addition to the capacitance formed between the touch electrodes 111, 121 and the conductive tip 11, there will also be capacitance formed between the user's hand 30 and the touch electrodes 111, 121.

[0526] 13(b), the driving signal is transmitted not only to the capacitance formed between the conductive tip 11 of the stylus pen 10 but also to the capacitance between the conductive tip 11 and the user's hand 30. The driving signal is transmitted to the resonant circuit unit 12 because the user's hand 30 is connected to the ground portion 15 of the stylus pen 10.

[0527] Meanwhile, the resonant circuit unit 12 resonates using the voltage difference between the signal transmitted through the conductive tip 11 and the ground 15 of the stylus pen 10, and when the same driving signal is applied to the ground 15 of the stylus pen 10 through the hand 30, the voltage difference between the conductive tip 11 and the ground 15 of the stylus pen 10 decreases, and the magnitude of the resonant signal decreases. This will be described in detail with reference to Figures 14 and 15.

[0528] FIG. 14 is a diagram showing a case where a touch input is performed on the touch sensing unit 260 according to an embodiment using a stylus pen, and FIG. 15 is a diagram showing the influence of the driving signal transmitted to the hand in FIG. 14.

[0529] As shown in FIG. 14, the tip 11 of the stylus pen 10 forms capacitances Ct1 and Ct2 with the second touch electrodes 121-3 and 121-4, respectively.

[0530] When a user holds the stylus pen 10 and performs a touch input on the touch sensor 261, the user's hand 30 may be spaced apart from the conductive tip 11 of the stylus pen 10 and may come into contact with the touch sensor 261. For example, as shown in Fig. 15, the user's hand 30 may come into contact with the region of the touch sensor 261 where the second touch electrodes 121-7 and 121-8 are arranged. That is, the user's hand 30 may form capacitance with the second touch electrodes 121-7 and 121-8.

[0531] 15, the touch electrode of the touch sensor 261 may form a capacitance with the conductive tip 11 of the stylus pen 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 pen 10, and the second touch electrode 121-4 forms a capacitance Ct2 with the conductive tip 11 of the stylus pen 10. One end of the resonant circuit unit 12 of the stylus pen 10 is electrically connected to the second touch electrodes 121-3 and 121-4.

[0532] The touch electrode of the touch sensor 261 may 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.

[0533] The user's hand 30 holds the stylus pen 10, i.e., the ground portion 15 (or the body portion 17) of the stylus pen 10, so that the user's hand 30 and the ground portion 15 of the stylus pen 10 are electrically connected, or the user's hand 30 and the ground portion 15 of the stylus pen 10 form a capacitance Ccp via the body portion 17. In other words, the other end of the resonant circuit portion 12 is electrically connected to the user's hand 30.

[0534] Furthermore, 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 pen 10 and the ground of the touch sensor 261.

[0535] The drive signal applied to the touch electrodes 121-8, 121-9 is transmitted to the other end of the resonant circuit unit 12 via capacitances Cp1, Cp2 between the touch electrodes 121-8, 121-9 and the user's hand 30 and capacitance Ccp between the user's hand 30 and the ground portion 15 of the stylus pen 10.

[0536] As described above, when a drive signal is applied to the ground 15, the ground 15 of the stylus pen 10 does not have an ideally stable ground state, and the voltage level may change depending on the drive signal. Meanwhile, the resonant circuit 12 stores the energy required for resonance in the voltage difference between the ground 15 and the conductive tip 11, or if the potential of the ground 15 changes depending on the drive signal, the voltage difference between the ground 15 and the conductive tip 11 decreases, and the magnitude of the resonant signal decreases.

[0537] To solve this problem, in the prior art, when a contact object similar to the user's hand 30 and the stylus pen 10 simultaneously contact the touch sensor 261, a drive signal is not applied to the location where the user's hand is expected to be located, or a drive signal with a 180 degree phase difference is applied to prevent a decrease in the magnitude of the resonance signal generated by the stylus pen 10. This operation will be described below with reference to FIG.

[0538] FIG. 16 is a diagram illustrating an application operation of a driving signal to the touch sensing unit 260 according to an embodiment.

[0539] Referring to FIG. 16, when the user's hand 30 holds the stylus pen 10 and is positioned on the touch sensor 261, the conductive tip 11 of the stylus pen 10 may be positioned on the second touch electrodes 121-3, 121-4, and the user's hand 30 may be positioned on the second touch electrodes 121-8, 121-9.

[0540] 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 pen 10 is located, and 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, can apply a second driving signal having a phase difference of 180 degrees from the first driving signal.

[0541] In this case, the second driving / receiving unit 2622' may maintain a constant voltage (e.g., a ground state) on the other second touch electrodes 121-1, 121-2, 121-5, 121-6, and 121-7 adjacent to the second touch electrodes 121-3 and 121-4. In the illustrated example, the grounded second touch electrodes 121-5, 121-6, and 121-7 are disposed between the second touch electrodes to which the first and second driving signals are applied. However, in actual implementation, the touch electrodes to which the first and second driving signals are applied may be disposed contiguously. In addition, the control unit 2624 may set the second touch electrodes 121-1, 121-2, 121-5, 121-6, and 121-7 to a floating state instead of grounding them. Here, a floating state means that the specific electrode is open, without being grounded or connected to another circuit configuration.

[0542] Since drive signals having a phase difference of 180 degrees are provided to the ground portion 15 of the stylus pen 10, the voltage difference between both ends of the resonant circuit portion 12 increases more than when the ground portion 15 of the stylus pen 10 is ideally grounded. Therefore, the energy available for resonance increases, and the stylus pen 10 can generate a larger resonant signal.

[0543] However, when the stylus pen 10 and the user's hand 30 form capacitance with the same touch electrode, it is difficult to increase the magnitude of the resonant signal in the above-described embodiment.

[0544] FIG. 17 is a diagram showing another example of performing a touch input on the touch sensing unit 260 according to an embodiment using a stylus pen, and FIG. 18 is a diagram showing the influence of the driving signal transmitted to the hand in FIG. 17.

[0545] Referring to FIG. 17, the tip 11 of the stylus pen 10 forms capacitances Cx1, Cx2, and Cx3 with the second touch electrode 121-4 and the first touch electrodes 111-2 and 111-3, respectively.

[0546] When a user holds the stylus pen 10 and performs a touch input on the touch sensor 261, the user's hand 30 may be spaced apart from the conductive tip 11 of the stylus pen 10 and may contact the touch sensor 261. At this time, the user's hand 30 and the conductive tip 11 may be located on the same touch electrode. For example, as shown in FIG. 18, the user's hand 30 may contact the area of ​​the touch sensor 261 where the second touch electrode 121-4 is located. That is, the user's hand 30 may form a capacitance with the second touch electrode 121-4.

[0547] 18, the touch electrode of the touch sensor 261 may form a capacitance with the conductive tip 11 of the stylus pen 10. For example, the second touch electrode 121-4 of the touch sensor 261 forms a capacitance Cx1 with the conductive tip 11 of the stylus pen 10, and the first touch electrodes 111-2 and 111-3 of the touch sensor 261 form capacitances Cx2 and Cx3, respectively, with the conductive tip 11 of the stylus pen 10. One end of the resonant circuit unit 12 of the stylus pen 10 is electrically connected to the second touch electrode 121-4 and the first touch electrodes 111-2 and 111-3.

[0548] The touch electrodes of the touch sensor 261 may form capacitance with the user's hand 30. For example, the second touch electrode 121-4 of the touch sensor 261 forms a capacitance Cbl with the user's hand 30, and the first touch electrode 111-8 forms a capacitance Cb2 with the user's hand 30.

[0549] The user's hand 30 holds the stylus pen 10, i.e., the ground portion 15 (or the body portion 17) of the stylus pen 10, so that the user's hand 30 and the ground portion 15 of the stylus pen 10 are electrically connected, or the user's hand 30 and the ground portion 15 of the stylus pen 10 form a capacitance Ccp via the body portion 17. In other words, the other end of the resonant circuit portion 12 is electrically connected to the user's hand 30.

[0550] In addition, a capacitor 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 pen 10 and the ground of the touch sensor 261.

[0551] The drive signal applied to the touch electrode 121-4 is transmitted to the other end of the resonant circuit unit 12 via a capacitance Cb4 between the touch electrode 121-4 and the user's hand 30 and a capacitance Ccp between the user's hand 30 and the ground portion 15 of the stylus pen 10.

[0552] Thus, as the drive signal is applied to the ground portion 15, the ground portion 15 of the stylus pen 10 does not have an ideally stable ground state, and the voltage level changes depending on the drive signal. Meanwhile, the resonant circuit portion 12 stores the energy required for resonance in the voltage difference between the ground portion 15 and the conductive tip 11, but if the potential of the ground portion 15 changes depending on the drive signal, the voltage difference between the ground portion 15 and the conductive tip 11 decreases, and the magnitude of the resonant signal decreases.

[0553] FIG. 19 illustrates an application operation of a driving signal to the touch sensing unit 260 according to an embodiment.

[0554] Referring to FIG. 19, when a user's hand 30 holds the stylus pen 10 and is positioned on the touch sensor 261, the conductive tip 11 of the stylus pen 10 can be positioned on the second touch electrode 121-4, and the user's hand 30 can also be positioned on the second touch electrode 121-4.

[0555] The second driving / receiving unit 2622 can apply a first driving signal to the second touch electrode 121-4 where the stylus pen 10 and hand 30 are located, and the second touch electrodes 121-8 and 121-9, which are arranged adjacent to the second touch electrode 121-4 to which the first driving signal is applied, can apply a second driving signal having a phase difference of 180 degrees from the first driving signal.

[0556] In this case, a driving signal having the same phase as that of the conductive tip 11 is also transmitted to the ground portion 15 of the stylus pen 10 via capacitance Cb4 formed between the touch electrode 121-4 and the user's hand 30 and capacitance Ccp formed between the user's hand 30 and the ground portion 25 of the stylus pen 10. Therefore, the voltage difference that drives the resonant circuit is significantly smaller than when no driving signal is input to the hand 30. In other words, when a driving signal is transmitted to the ground portion 15 of the stylus pen 10 via the hand 30, the voltage difference across the resonant circuit 12 decreases, thereby reducing the energy available for resonance.

[0557] A touch sensing unit according to an embodiment of the present disclosure will be described with reference to FIGS.

[0558] FIG. 20 is a diagram illustrating a touch sensing unit according to an embodiment.

[0559] 20, a touch sensing unit 260′ according to an embodiment 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 to and from the touch sensor 261, and a control unit 2624.

[0560] The touch sensor 261 includes a plurality of first touch electrodes 111-1 to 111-m extending in a first direction, a plurality of second touch electrodes 121-1 to 121-n extending in a second direction intersecting the first direction, and a plurality of third touch electrodes 131-11 to 131-ab arranged in a matrix. In the touch sensor 261, the plurality of first touch electrodes 111-1 to 111-m may be arranged along the second direction, and the plurality of second touch electrodes 121-1 to 121-n may be arranged along the first direction. The plurality of third touch electrodes 131-11 to 131-ab may be arranged in a dot matrix. One third touch electrode (e.g., 131-11) may be disposed corresponding to an area where a plurality of intersections of adjacent first touch electrodes (e.g., 111-1 to 111-4) and adjacent second touch electrodes (e.g., 121-1 to 121-4) are located. In FIG. 20, the shape of the touch sensor 261 is shown as a rectangle, but is not limited thereto.

[0561] The plurality of first touch electrodes 111-1 to 111-m are connected to a first driving / receiving unit 2620, the plurality of second touch electrodes 121-1 to 121-n are connected to a second driving / receiving unit 2622, and the plurality of third touch electrodes 131-11 to 131-ab are connected to a third driving / receiving unit 2626. Although the first driving / receiving unit 2620, the second driving / receiving unit 2622, the third driving / receiving unit 2626, and the control unit 2624 are shown separately in FIG. 1, they may be implemented as a single module, unit, or chip, and are not limited thereto.

[0562] The first driver / receiver 2620 can apply drive signals to the plurality of first touch electrodes 111-1 to 111-m. The first driver / receiver 2620 can receive sense signals from the plurality of first touch electrodes 111-1 to 111-m. Similarly, the second driver / receiver 2622 can apply drive signals to the plurality of second touch electrodes 121-1 to 121-n. The second driver / receiver 2622 can receive sense signals from the plurality of second touch electrodes 121-1 to 121-n. Similarly, the third driver / receiver 2626 can apply drive signals to the plurality of third touch electrodes 131-11 to 131-ab. The third driver / receiver 2626 can receive sense signals from the plurality of third touch electrodes 131-11 to 131-ab.

[0563] The first driver / receiver 2620, the second driver / receiver 2622, and the third driver / receiver 2626 may be a type of transceiver that transmits and receives signals, and may each include a driver that generates and outputs a drive signal and a receiver that receives the signal. However, the first driver / receiver 2620, the second driver / receiver 2622, and the third driver / receiver 2626 may be a driver that only transmits signals or a receiver that only receives signals, and are not limited to the above description.

[0564] The drive signal may include a signal (for example, a sine wave, a square wave, etc.) having a frequency corresponding to the resonance frequency of the stylus pen 10. The resonance frequency of the stylus pen 10 depends on the design value of the resonance circuit section 23 of the stylus pen.

[0565] The touch sensing unit 260 may be used to sense touch input (direct touch or proximity touch) by a touch object.

[0566] FIG. 21 is a plan view of a portion of a touch sensor 261 according to one embodiment, FIG. 22 is a plan view showing a portion of FIG. 21 in detail, FIG. 23 is a cross-sectional view taken along X-X' of FIG. 22, and FIG. 24 is a plan view of a portion of a touch sensor 261 according to another embodiment.

[0567] Referring to both Figures 21 and 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 wirings CHY-1 to CHY-8, second wirings CHX-1 to CHY-7, third wirings CHD-1 to CHD-4, a first pad PD1, and a second pad PD2.

[0568] The first touch electrodes 111-1 to 111-8 may be arranged along a first direction X. Each of the first touch electrodes 111-1 to 111-8 may include a plurality of first sensor patterns SP1 arranged along a second direction Y and a first connecting pattern BP1 electrically connecting adjacent first sensor patterns SP1 to each other.

[0569] The second touch electrodes 121-1 to 121-7 may be arranged along the second direction Y. Each of the second touch electrodes 121-1 to 121-7 may include a plurality of second sensor patterns SP2 arranged along the first direction X and a second connecting pattern BP2 electrically connecting adjacent second sensor patterns SP2 to each other.

[0570] Each of the first sensor pattern SP1 and the second sensor pattern SP2 may include an outer boundary line OL and an inner boundary line IL. The inner boundary line IL may be defined within the outer boundary line OL on a plane. The first sensor pattern SP1 and the second sensor pattern SP2 may not be arranged in an inner boundary area ILA surrounded by the inner boundary line IL on a plane.

[0571] The third touch electrodes 131-11 to 131-22 may be referred to as third sensor patterns SP3, self-capacitance sensor patterns SP3, or operating dummy patterns SP3. Each of the third touch electrodes 131-11 to 131-22 may include a plurality of third sensor patterns SP3 and a third connecting pattern BP3 that electrically connects adjacent third sensor patterns SP3 to each other.

[0572] The third sensor pattern SP3 may be disposed in an inner region ILA on a plane. The third sensor pattern SP3 may be insulated from the first sensor pattern SP1 and the second sensor pattern SP2. That is, openings may be defined in each of the first and second sensor patterns SP1 and SP2. The openings may correspond to the inner region ILA. The third sensor pattern SP3 or a dummy pattern DMP may be disposed in each of the openings.

[0573] 22, the third sensor pattern SP3 may be disposed in a portion of the inner region ILA of the first sensor pattern SP1 and the second sensor pattern SP2. In this case, a dummy pattern DMP may be disposed in the remaining portion of the inner region ILA of the first sensor pattern SP1 and the second sensor pattern SP2 where the third sensor pattern SP3 is not disposed. In FIGS. 21 and 22, dots are displayed at the positions where the third sensor pattern SP3 is disposed to distinguish the region where the third sensor pattern SP3 is disposed from the region where the dummy pattern DMP is disposed. The dummy pattern DMP may be floating electrodes to which no separate electrical signal is applied from the outside. As a result, a separate signal wiring connected to the dummy pattern DMP may be omitted. The dummy pattern DMP may be insulated from the first sensor pattern SP1, the second sensor pattern SP2, and the third sensor pattern SP3.

[0574] The first and second sensor patterns SP1 and SP2 can sense an externally applied touch by forming mutual capacitance therebetween, and the third sensor pattern SP3 can sense an external touch through a change in self-capacitance.

[0575] According to an embodiment of the present invention, the touch sensor 261 can implement both mutual capacitance and self-capacitance touches.

[0576] Each of the first sensor pattern SP1, the second sensor pattern SP2, the third sensor pattern SP3, the first connecting pattern BP1, and the second connecting pattern BP2 may include 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 connecting pattern BP1, and the second connecting pattern BP2 may include at least one of indium zinc oxide (IZO), indium tin oxide (ITO), indium gallium oxide (IGO), indium gallium zinc oxide (IGZO), and mixtures / compounds thereof. However, the present invention is not limited thereto.

[0577] The first wirings CHY-1 to CHY-8 may be connected to the first touch electrodes 111-1 to 111-8, the second wirings CHX-1 to CHY-7 may be connected to the second touch electrodes 121-1 to 121-7, and the third wirings CHD-1 to CHD-4 may be connected to the third touch electrodes 131-11 to 131-22.

[0578] The first wirings CHY-1 to CHY-8 may be respectively connected to the first sensor patterns SP1 arranged at the ends of the first touch electrodes 111-1 to 111-8.

[0579] The second wirings CHX-1 to CHY-7 may be respectively connected to the second sensor patterns SP2 arranged at the ends of the second touch electrodes 121-1 to 121-7, and the third wirings CHD-1 to CHD-4 may be connected to the third touch electrodes 131-11 to 131-22 in one-to-one correspondence.

[0580] Some of the third wirings CHD-1 to CHD-4, such as the third wiring CHD-4, may be connected to the third touch electrode 131-22 located inside the touch sensor 261 via a connecting wiring CL extending along the outer line OL. The connecting wiring CL is disposed between the outer line OL of two adjacent sensor patterns, thereby minimizing parasitic capacitance with the sensor patterns.

[0581] However, the present invention is not limited thereto. For example, a plurality of wirings may be connected to each of the second touch electrodes 121-1 to 121-7 as well as the first touch electrodes 111-1 to 111-8. In another embodiment, wirings may be connected to only 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.

[0582] As shown in FIG. 24, some of the third wirings CHD-1 to CHD-4, such as the third wiring CHD-4, may be connected to the third touch electrode 131-22 located inside the touch sensor 261 via a dummy pattern DMP.

[0583] Each of the first wirings CHY-1 to CHY-8, second wirings CHX-1 to CHY-7, and third wirings CHD-1 to CHD-4 may have a single-layer or multi-layer structure. Each of the first wirings CHY-1 to CHY-8, second wirings CHX-1 to CHY-7, and third wirings CHD-1 to CHD-4 may include a transparent conductive oxide containing at least one of indium zinc oxide (IZO), indium tin oxide (ITO), indium gallium oxide (IGO), indium gallium zinc oxide (IGZO), and mixtures / compounds thereof, and may include molybdenum, silver, titanium, copper, aluminum, or an alloy thereof.

[0584] The first wirings CHY-1 to CHY-8, the second wirings CHX-1 to CHY-7, and the third wirings 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.

[0585] 23, the touch sensor 261 includes a first conductive layer 101, an insulating layer 105, a second conductive layer 102, and a window 103.

[0586] Each of the first conductive layer 101 and the second conductive layer 102 may include a plurality of conductive patterns. The plurality of conductive patterns may include the 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 wirings CHY-1 to CHY-8, second wirings CHX-1 to CHY-7, and third wirings CHD-1 to CHD-4 described in Figures 21 and 22. This will be described in detail below.

[0587] The insulating layer 105 is disposed between the first conductive layer 101 and the second conductive layer 102. The insulating layer 105 separates and separates 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 may be electrically insulated by the insulating layer 105. A portion of the first conductive layer 101 and the second conductive layer 102 may be electrically connected via a contact hole penetrating the insulating layer 105. The insulating layer 105 may include an organic material and / or an inorganic material.

[0588] The window 103 covers the second conductive layer 102 to protect the second conductive layer 102. The window 103 may have insulating properties. The window 103 may include at least one inorganic film and / or organic film. In some cases, the window 103 may be omitted.

[0589] 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 connecting pattern BP1 disposed on the second conductive layer 102.

[0590] 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 connecting pattern BP2 disposed on the first conductive layer 101. The second sensor pattern SP2 and the second connecting pattern BP2 may be electrically connected to each other through a contact hole HL.

[0591] 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 connecting pattern BP3 disposed on the first conductive layer 101. The third sensor pattern SP3 and the third connecting pattern BP3 may be electrically connected to each other through a contact hole HL.

[0592] FIG. 25 is a diagram showing an example in which a stylus pen is brought close to the touch sensing unit of FIG.

[0593] The stylus pen 10 may include a conductive tip 11, a resonant circuit unit 12, a ground 15, and a body 17. A touch sensing unit 260 can sense touch input from the stylus pen 10 in proximity to a touch sensor 261.

[0594] The conductive tip 11 may be at least partially formed of a conductive material (eg, metal, conductive rubber, conductive fabric, conductive silicon, etc.) and may be electrically connected to the resonant circuit unit 12 .

[0595] The resonant circuit unit 12 is an LC resonant circuit that can resonate with a driving signal applied from at least one of the first driving / receiving unit 2620 and the second driving / receiving unit 2622 to at least one type of electrode among the plurality of first touch electrodes 111-1 to 111-m and the plurality of second touch electrodes 121-1 to 121-n via the conductive chip 11.

[0596] A resonant signal generated by resonating the resonant circuit unit 12 with the drive signal may be output to the touch sensor 261 via the conductive chip 11. In a section where the drive signal is applied to all of at least one type of electrodes among 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 and in a section thereafter, a resonant signal generated by the resonance of the resonant circuit unit 12 may be transmitted to the conductive chip 11. The resonant circuit unit 12 may be located within the body part 17 and electrically connected to the ground part 15.

[0597] The stylus pen 10 of this type can generate a touch input by generating a resonance 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, and 131-11 to 131-ab.

[0598] A capacitance Cx is formed between at least one of the touch electrodes 111-1 to 111-m, 121-1 to 121-n, and 131-11 to 131-ab and the conductive tip 11 of the stylus pen 10. A drive signal may be transmitted to the stylus pen 10 side and a resonance signal may be transmitted to the touch sensor 261 side via the capacitance Cx between at least one of the touch electrodes 111-1 to 111-m, 121-1 to 121-n, and 131-11 to 131-ab and the conductive tip 11.

[0599] The touch sensing unit 260 can detect touches by touch objects other than the stylus pen 10 that uses the method of generating a resonance signal described above (e.g., a user's body part (finger, palm, etc.), a passive or active stylus pen), but is not limited thereto.

[0600] For example, the touch sensing unit 260 detects a touch by a stylus pen that receives an input of an electric signal and outputs it as a magnetic field signal. For example, the touch sensing unit 260 may further include a digitizer. A touch can be detected by the digitizer detecting a magnetic field signal generated by electromagnetic resonance (or electromagnetic induction) by the stylus pen. Alternatively, the touch sensing unit 260 detects a touch by a stylus pen that receives an input of a magnetic field signal and outputs it as a resonated magnetic field signal. For example, the touch sensing unit 260 may further include a coil that applies a current as a driving signal and a digitizer. The stylus pen resonates with the magnetic field signal generated by the coil to which the current is applied. A touch can be detected by the digitizer detecting a magnetic field signal generated by electromagnetic resonance (or electromagnetic induction) by the stylus pen. Alternatively, the touch sensing unit 260 detects a touch by a stylus pen that receives an input of a magnetic field signal and outputs a predetermined signal. Here, the predetermined signal output from the stylus pen may be different from the signal resonated by the resonant circuit unit within the stylus pen. For example, the predetermined signal may be a signal output from an active circuit unit within the stylus pen. The active circuit may receive power from a battery charged by the resonated signal and output the predetermined signal.

[0601] The control unit 2624 controls the operation of the touch sensing unit 260 and can output touch coordinate information in response to the touch sensing result of the touch sensing unit 260 .

[0602] Referring to FIG. 26, a touch sensing unit 260 including an antenna module according to the present disclosure will be described.

[0603] FIG. 26 is a diagram illustrating a part of a touch sensing unit according to an embodiment.

[0604] According to an embodiment, the touch sensing unit 260 includes a touch sensor 261, a loop coil 264, a coil driver 263 that drives the loop coil 264, and a touch controller 262 that controls the touch sensor 261. The touch controller 262 may include a driver 2620 that transmits and receives signals to and from the touch sensor 261, a receiver 2622, and a controller 2624. Although separately illustrated in the drawings, the touch controller 262 may further include a coil driver 263 that applies a drive signal to the loop coil 264.

[0605] The 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 extend in the second direction, and the plurality of second touch electrodes 121-1 to 121-n may extend in the first direction. In the 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.

[0606] The driving unit 2620 may apply driving signals to the plurality of first touch electrodes 111-1 to 111-m, and the receiving unit 2622 may receive sensing signals from the plurality of second touch electrodes 121-1 to 121-n.

[0607] Although the touch sensor 261 has been described above as being implemented using a mutual capacitance method, the touch sensor 261 may also be implemented using a self-capacitance method. It would be easy for a person skilled in the art to appropriately 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, add new components, or omit some components to modify them to suit the self-capacitance method.

[0608] FIG. 27 is a diagram illustrating a part of a touch sensing unit 260 according to an embodiment.

[0609] According to an embodiment, the touch sensing unit 260 includes a touch sensor 261, a loop coil 264, a coil driver 263 that drives the loop coil 264, and a touch controller 262 that controls the touch sensor 261. The touch controller 262 may include a driver / receiver 2620 and a driver / receiver 2622 that transmit and receive signals to and from the touch sensor 261, and a controller 2624. The touch controller 262 may further include a coil driver 263 that applies a drive signal to the loop coil 264.

[0610] The 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 extend in the second direction, and the plurality of second touch electrodes 121-1 to 121-n may extend in the first direction. In the 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.

[0611] The driving / receiving unit 2620 may 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 may 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.

[0612] Although the touch sensor 261 has been described above as being implemented using a mutual capacitance method, the touch sensor 261 may also be implemented using a self-capacitance method. It would be easy for a person skilled in the art to appropriately 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, add new components, or omit some components to modify them to suit the self-capacitance method.

[0613] In addition, the driving / receiving unit 2620 may be connected to at least one of the plurality of first touch electrodes and the plurality of second touch electrodes to apply a driving signal, and the driving / receiving unit 2622 may 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.

[0614] The coil driver 263 applies a drive signal to the loop 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, or may be an AC voltage or AC current having a predetermined frequency. The frequency and magnitude of such a drive signal may be changed under the control of the control section 2624.

[0615] The control unit 2624 can demodulate the touch signals received by the driving / receiving unit 2620 and the driving / receiving unit 2622 and receive sensor input from the stylus pen 10.

[0616] In addition, the controller 2624 may modulate the driving signal applied to the loop coil 264 so as to change the resonant signal frequency of the stylus pen 10. At this time, the touch signal demodulation method and the frequency change request driving signal modulation method in the controller 2624 may be performed using methods such as OOK (On / Off Keying), ASK (Amplitude Shift Keying), and FSK (Frequency Shift Keying). Similarly, the touch signal modulation method and the frequency change request driving signal demodulation method in the stylus pen 10 may be performed using methods such as OOK (On / Off Keying), ASK (Amplitude Shift Keying), and the like.

[0617] Referring to FIG. 28, the touch sensing unit 260 of the electronic device 2' shown in FIG. 1(b) will be described.

[0618] Figure 28 is a diagram schematically illustrating a portion of a touch sensing unit 260 according to an embodiment. The touch sensing unit 260 illustrated in Figure 28 is the same as the touch sensing unit 260 described in Figure 26 except that it includes a plurality of loop coils 264a and 264b, and the plurality of loop coils 264a and 264b are located in areas other than the folding area FA including the folding axis AXIS_F. Therefore, detailed descriptions of other components will be omitted.

[0619] The first loop coil 264a is located on the left side of the folding axis AXIS_F, and the second loop coil 264b is located on the right side of the folding axis AXIS_F. The first and second loop coils 264a and 264b are connected to a coil driver 263.

[0620] The coil driver 263 applies a driving signal to each of the first and second loop coils 264a and 264b. The coil driver 263 can apply different driving signals depending on the position of the stylus pen 10 on the touch screen 20. This will be described later with reference to the accompanying drawings.

[0621] 28 shows two loop coils, the number of loop coils can be increased depending on the number of folding regions. For example, if there are two folding regions, there may be three loop coils, and if there are three folding regions, there may be four loop coils. In this way, the number of loop coils may be the number of folding regions plus one.

[0622] The stylus pen 10 shown in FIG. 1 will now be described.

[0623] 29(a) and 29(b) are diagrams illustrating how the stylus pen 10 according to one embodiment and the touch screen 20 according to two embodiments are driven.

[0624] Referring to (a) and (b) of Figure 29, the stylus pen 10 may include a conductive tip 11, a resonance circuit portion 12, a ground portion 15, and a housing (e.g., a case, frame, cover, etc.) 17.

[0625] The conductive tip 11 is electrically connected to the resonant circuit unit 12. At least a portion of the conductive tip 11 may be made of, but is not limited to, a conductive material (e.g., metal, conductive rubber, conductive fabric, conductive silicone, etc.). Alternatively, the conductive tip 11 may be present inside a non-conductive housing, with a portion of the conductive tip 11 exposed to the outside of the housing, but is not limited to this.

[0626] The conductive tip 11 may be at least partially formed of a conductive material (eg, metal, conductive rubber, conductive fabric, conductive silicon, etc.) and may be electrically connected to the resonant circuit unit 12 .

[0627] The resonant circuit unit 12 serves as an LC resonant circuit and can resonate with a drive signal output from the touch screen 20. The resonant circuit unit 12 serves as an LC resonant circuit and can resonate with a drive signal applied to at least one of the first touch electrodes 111-1 to 111-m and the second touch electrodes 121-1 to 121-n from at least one of the first driving / receiving unit 2620 and the second driving / receiving unit 2622 via the conductive chip 11. Here, the drive signal may be a Tx signal transmitted to the touch electrode (channel). 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 unit 12. The resonant frequency of the stylus pen 10 depends on the design value of the resonant circuit unit 12 of the stylus pen 10. For resonance to occur, the resonant frequency of the resonant circuit unit 12 and the frequency of the drive signal must be the same as or very similar to each other. When the touch electrode 21 generates an electric field due to a drive signal, the resonant circuit 12 of the stylus pen 10 resonates using the signal received through the change in the electric field.

[0628] The housing 17 can accommodate the elements of the stylus pen 10. The housing 17 may have, but is not limited to, a cylindrical shape, a polygonal prism, a pillar shape with at least a curved surface, an entasis shape, a frustum of a pyramid shape, a circular truncated cone shape, or the like. The housing 17 has an open interior, so that the conductive tip 11, the resonant circuit part 12, and the ground part 15 can be accommodated therein. The housing 17 can be made of a non-conductive material.

[0629] The resonant circuit unit 12 resonates with the driving signal, generating a resonant signal, which may be output to the touch screen 20 via the conductive tip 11. During a period in which the driving signal is input to the touch electrode 21 and subsequent periods, a resonant signal generated by the resonance may be output to the touch screen 20 via the conductive tip 11. The resonant circuit unit 12 is located within the housing 17 and is electrically connected to the ground portion 15. The ground portion 18 may be grounded by the user's body contacting the outer surface of the housing 17.

[0630] Hereinafter, the stylus pen 10 according to various embodiments will be described with reference to FIG.

[0631] 30 is a diagram showing stylus pens according to various embodiments. Stylus pens 10a, 10b, 10c, 10d, and 10e each include a conductive tip 11 and a resonant circuit unit 12.

[0632] Specifically, the stylus pen 10 a of FIG. 30( a ) includes a conductive tip 11 and a resonant circuit unit 12 connected to the conductive tip 11 .

[0633] The stylus pen 10b of Figure 30 (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 power storage 14 connected to the rectifier 13, and an active circuit section 15 connected to the power storage 14, and the active circuit section 15 is connected to the resonant circuit section 12.

[0634] The stylus pen 10c of Figure 30 (c) includes a conductive tip 11, a resonant circuit section 12, a battery 50 connected to the resonant circuit section 12, and an active stylus module 60 connected to the battery 50, and the active stylus module 60 is connected to the conductive tip 11.

[0635] The stylus pen 10d of Figure 30 (d) includes a conductive tip 11, an active stylus module 60 connected to the conductive tip 11, a resonant circuit unit 12 connected to the active stylus module 60, and a battery 50 connected to the resonant circuit unit 12, and the battery 50 and the active stylus module 60 are connected to each other.

[0636] The stylus pen 10e in Figure 30(e) includes a conductive tip 11, a resonant circuit unit 12, and an active module 50. In addition to these, the stylus pens 10a, 10b, 10c, 10d, and 10e may further include a sensor and / or a communication module, which will be described later.

[0637] At least a portion of the conductive tip 11 may be formed of a conductive material (e.g., metal, conductive rubber, conductive fabric, conductive silicone, etc.), but is not limited thereto. The resonant circuit unit 12, as an LC resonant circuit, may resonate with the driving signal output from the loop coil 264. The resonant circuit unit 12, as an LC resonant circuit, may resonate with the driving signal output from the touch screen 20. 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 resonant circuit unit 12. The resonant frequency of the stylus pens 10a, 10b, 10c, 10d, and 10e depends on the design value of the resonant circuit unit 12 of the stylus pens 10a, 10b, 10c, 10d, and 10e. For resonance to occur, the resonant frequency of the resonant circuit unit 12 and the frequency of the driving signal must be the same or very similar. When the loop coil 264 generates a magnetic field due to a drive signal or the touch sensor 261 generates an electric field due to a drive signal, the resonant circuit unit 12 of the stylus pens 10a, 10b, 10c, 10d, and 10e resonates using the signal received through changes in the magnetic field and / or electric field.

[0638] The elements of the stylus pens 10a, 10b, 10c, 10d, and 10e may be housed in a housing. The housing may have a shape such as a cylinder, a polygonal prism, a pillar with at least a curved surface, an entasis, a frustum of a pyramid, or a circular truncated cone, but is not limited to these. The housing has an open interior, so that the elements of the stylus pens 10a, 10b, 10c, 10d, and 10e, such as the conductive tip 11 and the resonant circuit unit 12, can be housed therein. Such a housing may be made of a non-conductive material.

[0639] 30(a) may include a conductive tip 11 and a resonant circuit unit 12 directly connected to the conductive tip 11. The resonant circuit unit 12 resonates using energy transmitted from the loop coil 264, and the resonated energy is output directly via the conductive tip 11.

[0640] During the period in which the driving signal is input to the loop coil 264 and subsequent periods, a resonant signal due to resonance may be output to the touch screen 20 via the conductive tip 11. The resonant circuit unit 12 is located within the housing and electrically connected to the ground. The electronic device 2 may be used to sense touch input (direct touch or proximity touch) from a touch object. As shown in FIG. 29 , the electronic device 2 may sense touch input from a stylus pen 10 in proximity to the touch sensor 261.

[0641] The stylus pen 10b shown in Figure 30(b) includes a conductive tip 11, a resonant circuit unit 12, a rectifier 13, a power storage 14, and an active circuit unit 15. In addition, the stylus pen 10 may further include a sensor (not shown) and / or a communication module (not shown). The resonant circuit unit 12 resonates using energy transferred from the loop coil 264, and the resonated energy is transferred to the active module 50. The resonant circuit unit 12 resonates using energy transferred from the loop coil 264, and the resonated energy may be rectified by the rectifier 13 and used to charge the power storage 14. The power storage 14 may include a rechargeable battery or a capacitor such as an EDLC (electric double layered capacitor).

[0642] 30(b) can receive power from the power storage 14 and change the magnitude, frequency, phase, etc. of the resonant signal transmitted to the touch screen 20. The active circuit unit 15 can also transmit signals other than the touch input to the near field communication module 212 of the electronic device 2. The active module 50 can also transmit signals other than the touch input to the near field communication module 212 of the electronic device 2.

[0643] The active module 50 of the stylus pen 10e shown in Fig. 30(e) can rectify the resonated energy and store it. The active module 50 may include a rechargeable battery or a capacitor such as an EDLC (electric double layered capacitor) to store power. Additionally, the active module 50 may further include a DC / DC converter, etc.

[0644] The active module 50 may include a sensor, a communication unit, etc. For example, the sensor may be a pen pressure sensor for detecting a change in pressure due to application of the pen tip 11, an acceleration sensor for detecting a change in tilt of the stylus pen 10, a mechanical input means (or a mechanical key, for example, a button located on the rear or side of the stylus pen 10, a dome switch, a jog wheel, a jog switch, etc.), 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 recognition sensor, an optical sensor (for example, a camera), a microphone, a battery gauge, etc. The sensor may include at least one of a sensor gauge, an environmental sensor (e.g., a barometer, a hygrometer, a thermometer, a radiation detection sensor, a heat detection sensor, a gas detection sensor, etc.), and a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric recognition sensor, etc.).

[0645] The communication unit may perform short-range wireless communication using at least one of 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 (Wireless USB) technologies. The short-range communication method of the communication unit may be a short-range communication protocol other than the communication protocols described above, and is not limited to the above description.

[0646] The stylus pen 10c shown in FIGS. 30(c) and 30(d) may include a conductive tip 11, a resonant circuit unit 12, a battery 50 connected to the resonant circuit unit 12 for storing power, and an active stylus module 60 connected to the conductive tip 11. The resonant circuit unit 12 resonates using energy transferred from the loop coil 264, and the resonated energy may be used to charge the battery 50. The active stylus module 60 may receive power from the battery 50 and transmit signals to the touchscreen 20. The active module 50 may transmit electromagnetic signals to the touchscreen 20 using the stored power, energy transferred from the resonant circuit unit 12, etc. The active stylus module 60 may include an oscillator, etc., and may transmit electrical signals oscillating at a predetermined frequency generated by the oscillator to the touchscreen 20.

[0647] A stylus pen, an electronic device, and an input system including the same according to an embodiment will be described with reference to FIGS.

[0648] 31 is a diagram illustrating a stylus pen and a portion of an electronic device according to an embodiment. In the following, the same components as those previously described will not be described.

[0649] The active circuit section 15 may include a DC / DC converter 150, a battery 152, a sensor 154, and a controller 156. Here, the DC / DC converter 150 and the battery 152 may not be included depending on the design.

[0650] The DC / DC converter 150 can boost or down-convert the power stored in the power storage 14 to supply an appropriate charging voltage to the battery 152. If the active circuit unit 15 does not include a battery 152, the DC / DC converter 150 can supply the converted voltage as the operating voltage of the controller 156.

[0651] The battery 152 can be charged with the voltage supplied from the DC / DC converter 150 and supply the charged voltage as the operating voltage of the controller 156. When the active circuit unit 15 does not include the DC / DC converter 150, the battery 152 functions as the charge storage 14.

[0652] The sensor 154 may be a pen pressure sensor for detecting a change in pressure due to pressure applied to the pen tip 11, an acceleration sensor for detecting a change in tilt of the stylus pen 10, a mechanical input means (or a mechanical key, for example, a button located on the rear or side of the stylus pen 10, a dome switch, a jog wheel, a jog switch, etc.), 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 recognition sensor, an optical sensor (for example, a camera), a microphone, a battery gauge, etc. The sensor may include at least one of a sensor gauge, an environmental sensor (e.g., a barometer, a hygrometer, a thermometer, a radiation detection sensor, a heat detection sensor, a gas detection sensor, etc.), and a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric recognition sensor, etc.).

[0653] The controller 156 controls the overall operation of the stylus pen 10 .

[0654] The controller 156 can transmit the sensor input to the electronic device 2 by controlling the magnitude of the resonance signal according to the input from the sensor 154. The controller 154 can modulate the sensor input value in the OOK or ASK manner by controlling the on / off of the switches SW0, SW1, and SW2 according to the input value from the sensor. Although FIG. 31 shows a total of three resistors connected in parallel to represent four bits, more or fewer resistors may be included. This will be described with reference to FIGS. 32 and 33.

[0655] FIG. 32 is a flowchart illustrating a sensor input operation of a stylus pen and an electronic device according to an embodiment, and FIG. 33 is a waveform diagram illustrating an example of a driving signal and a resonance signal according to FIG.

[0656] 32, the electronic device 2 transmits a driving signal S00 to the stylus pen 10. The driving signal can charge the power storage 14, 152 of the stylus pen 10. If the power storage 14, 152 is sufficiently charged, this step may be omitted.

[0657] The sensor 154 senses an input (S10). The input may be various depending on the type of the sensor 154.

[0658] The controller 156 modulates (S12) the resonance signal based on the sensed input. Then, the modulated resonance signal is transmitted (S14) to the electronic device 2. As shown in Fig. 33, the resonance signal modulated by the ASK method may be transmitted to the electronic device 2.

[0659] The electronic device 2 demodulates the transmitted resonance signal to acquire sensing data using the sensor 154, and detects a touch input from the resonance signal (S02). The following describes data transmitted to the electronic device 2 depending on the type of the sensor 154.

[0660] If the sensor 154 is a pressure sensor and detects a hovering state, the controller 156 may control at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. As an example, the controller 156 may connect the voltage of the first node N1 to the ground of the battery 152 to stop outputting the resonance signal in the hovering state. In this case, the controller 2624 may determine that there is no touch input from the stylus pen 10 by detecting that the magnitude of the resonance signal received through the touch electrode 21 is very small or that the resonance signal itself is not received. As another example, the controller 156 may output data indicating the hovering state as the resonance signal through a signal modulation method using the magnitude of the resonance signal. In this case, the controller 2624 may demodulate the resonance signal received by the receiver 2622 to obtain data indicating the hovering state and not process the received resonance signal as a touch input.

[0661] If the sensor 154 is an acceleration sensor and detects a tilt angle, the controller 156 can control at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicating the tilt angle as a resonance signal through a signal modulation method using the magnitude of the resonance signal. Then, the controller 2624 can demodulate the resonance signal received by the receiver 2622 to obtain data indicating the tilt angle and adjust the touch area to correspond to the tilt angle. If the tilt angle of the stylus pen 10 from the Z-axis (see FIG. 5) is large, the controller 2624 can adjust the touch area to have a larger value than the touch area due to the touch input input according to the resonance signal, and generate touch data.

[0662] If the sensor 154 is a button or a touch sensor and detects a user pressing a button or touching the touch sensor, the controller 156 can control at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicating a button press or touch input as the resonance signal through a signal modulation method using the magnitude of the resonance signal. Then, the controller 2624 can demodulate the resonance signal received by the receiver 2622 to obtain data indicating a button press or touch input and generate touch data indicating the button press or touch input. The electronic device 2 can process the touch data indicating the button press or touch input as a user input received by the electronic device 2. For example, if the electronic device 2 further includes a camera, the controller 270 can perform an operation of capturing an image using the camera when touch data indicating a button press or touch input of the stylus pen 10 is received. In addition, if the electronic device 2 further includes a speaker, when touch data indicating a button press or touch input of the stylus pen 10 is received, the control unit 270 can control the volume of the sound output from the speaker or perform an operation to start or stop playing the sound.

[0663] If the sensor 154 is an illuminance sensor and detects the ambient illuminance, the controller 156 can control at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicating the ambient illuminance as the resonance signal through a signal modulation method using the magnitude of the resonance signal. Then, the controller 2624 can demodulate the resonance signal received by the receiver 2622 to obtain data indicating the ambient illuminance and transmit the data to the controller 270 or the display controller 252. Then, the brightness of the image displayed on the display panel 251 can be adjusted according to the ambient illuminance.

[0664] If the sensor 154 is a magnetic sensor and detects the direction in which the stylus pen 10 is facing, the controller 156 controls at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicating the direction in which the stylus pen 10 is facing as a resonance signal through a signal modulation method using the magnitude of the resonance signal. Then, the controller 2624 demodulates the resonance signal received by the receiver 2622 to obtain data indicating the direction in which the stylus pen 10 is facing and transmits the data to the controller 270. Then, the controller 270 can display the direction in which the stylus pen 10 is facing as a compass image, for example, on the display panel 251. The controller 270 can also generate a signal to control another external device located in the direction in which the stylus pen 10 is facing. In this case, it is assumed that the direction in which the external device is located relative to the electronic device 2 is stored in the memory 220.

[0665] If the sensor 154 is a gyroscope sensor or a motion sensor and detects a user's motion input, the controller 156 controls at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicating the motion input as a resonance signal through a signal modulation method using the magnitude of the resonance signal. Then, the controller 2624 demodulates the resonance signal received by the receiver 2622 to obtain data indicating the motion input and transmits the data to the controller 270. Then, the controller 270 can perform an operation according to the motion input.

[0666] If the sensor 154 is an RGB sensor, a light sensor, or an infrared sensor and detects external light, the controller 156 controls at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicating the color, image, or infrared level of the external light as the resonance signal through a signal modulation method using the magnitude of the resonance signal. Then, the controller 2624 demodulates the resonance signal received by the receiver 2622 to obtain data indicating the color, image, or infrared level of the external light and transmits the data to the controller 270. Then, the controller 270 can perform an operation according to the color, image, or infrared level of the external light.

[0667] If the sensor 154 is a fingerprint sensor and detects a user's fingerprint input, the controller 156 can authenticate the user by comparing the input fingerprint image with a fingerprint image stored in a memory (not shown) of the active circuit unit 15. If the user is an authenticated user, the controller 156 can control at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonant signal.

[0668] As an example, the controller 156 may connect the voltage of the first node N1 to the ground of the battery 152 to stop output of the resonance signal during use by an unauthorized user. In this case, the controller 2624 may detect that the magnitude of the resonance signal received through the touch electrode 21 is very small or that the resonance signal itself is not received, and determine that there is no touch input from the stylus pen 10. As another example, the controller 156 may output data indicating use by an unauthorized user as the resonance signal through a signal modulation method using the magnitude of the resonance signal. In this case, the controller 2624 may demodulate the resonance signal received by the receiver 2622 to obtain data indicating use by an unauthorized user and not process the received resonance signal as a touch input.

[0669] If the sensor 154 is a microphone and detects external sound, the controller 156 can control at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicative of the external sound as a resonance signal through a signal modulation method using the magnitude of the resonance signal. Then, the control unit 2624 can demodulate the resonance signal received by the receiver 2622 to obtain data indicative of the external sound and transmit the data to the control unit 270. Then, the control unit 270 can perform an operation according to the external sound.

[0670] If the sensor 154 is a battery gauge and detects the state of charge (SOC, OCV, etc.) of the battery 14, 152, the controller 156 can control at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicating the state of charge of the battery as a resonance signal through a signal modulation method using the magnitude of the resonance signal. Then, the controller 2624 can demodulate the resonance signal received by the receiver 2622 to obtain data indicating the state of charge of the battery 14, 152 and adjust the magnitude of the drive signal applied to the loop coil 264. The controller 2624 can reduce the magnitude of the drive signal when the state of charge of the battery 14, 152 is fully charged. The controller 2624 can increase the magnitude of the drive signal when the state of charge of the battery 14, 152 is below a critical value.

[0671] If the sensor 154 is a thermometer and senses the ambient temperature, the controller 156 can control at least one of the switches SW0, SW1, and SW2 to change the magnitude of the resonance signal. The controller 156 can output data indicating the ambient temperature as the resonance signal through a signal modulation method using the magnitude of the resonance signal. At this time, the controller 156 can also control the switch SW3 to change the resonance frequency. For example, if the ambient temperature increases, the controller 156 can control the switch SW3 to increase the resonance frequency. If the ambient temperature decreases, the controller 156 can control the switch SW3 to decrease the resonance frequency. Then, the controller 2624 can demodulate the resonance signal received by the receiver 2622 to obtain data indicating the ambient temperature and adjust the frequency of the drive signal applied to the loop coil 264. If the controller 2624 determines that the temperature is increasing, the controller 2624 can decrease the frequency of the drive signal. If the controller 2624 determines that the temperature is increasing, the controller 2624 can decrease the magnitude of the drive signal.

[0672] In addition, the data sensed by the sensor 154 can be modulated according to various data modulation methods and transmitted to the electronic device 2. Then, the control units 2624 and 270 can demodulate the received resonance signal to obtain sensor data and perform appropriate control accordingly.

[0673] Next, the controller 156 demodulates the driving signal transmitted through the touch electrode 21 to change the resonant frequency of the resonant circuit unit 12. This will be described with reference to FIGS. 34 and 35.

[0674] FIG. 34 is a flowchart illustrating an operation of changing the resonance frequency of a stylus pen and an electronic device according to an embodiment, and FIG. 35 is a waveform diagram illustrating an example of a driving signal and a resonance signal according to FIG.

[0675] The electronic device 2 may be vulnerable to noise having a frequency similar to the resonant frequency due to the design of the resonant circuit unit built into the stylus pen 10. Therefore, the control unit 2624 can change the drive frequency of the drive signal if the signal received from the receiver 2622 currently contains a noise component having a frequency identical or similar to the drive frequency of the drive signal, or if only a noise signal identical or similar to the drive frequency of the drive signal is currently present.

[0676] 34, the controller 2624 transmits (S20) a resonant frequency change request signal to the stylus pen 10. Before changing the drive frequency of the drive signal, the controller 2624 may modulate the resonant frequency change request signal into a drive signal and apply it to the touch electrode 21. As shown in FIG. 35, before changing the frequency f1 of the drive signal to frequency f2, the controller 2624 may modulate the resonant frequency change request signal into a drive signal using the ASK method and transmit it to the stylus pen 10.

[0677] The controller 156 demodulates the driving signal transmitted through the touch electrode 21 to determine whether a frequency change request signal is received (S30).

[0678] If there is a frequency change request, the controller 156 controls the switch SW3 to change the resonant frequency of the resonant circuit unit 12 (S32). Then, the stylus pen 10 transmits the resonant signal (S34) to the electronic device 2. At this time, if the resonant frequency is changed but the driving frequency of the driving signal is not changed, the magnitude of the resonant signal may be reduced.

[0679] If the resonant frequency of the resonant circuit unit 12 is changed, the control unit 2624 changes the frequency of the drive signal to the changed resonant frequency and detects a touch input (S22). Referring back to FIG. 35, at time t1, the control unit 2624 changes the drive frequency of the drive signal to f2. At this time, the changed resonant frequency of the resonant circuit unit 12 may be a preset frequency. Alternatively, the controller 156 may output data indicating that the resonant frequency has been changed as a resonant signal through a signal modulation method using the magnitude of the resonant signal, allowing the control unit 2624 to check whether the resonant frequency has been changed. Alternatively, the control unit 2624 may determine that the resonant frequency has been changed if the magnitude of the received resonant signal decreases after transmitting the frequency change request signal or if a predetermined time has elapsed since transmitting the frequency change request signal.

[0680] Next, a stylus pen, an electronic device, and an input system including the same according to other embodiments will be described with reference to FIGS.

[0681] 36 is a diagram illustrating a stylus pen and a portion of an electronic device according to an embodiment. In the following, the same components as those previously described will not be described.

[0682] As shown in FIG. 36, the stylus pen 10 further includes a communication unit 158 ​​capable of communicating with an external communication module 212 or the like.

[0683] The communication unit 158 ​​may perform short-range wireless communication using at least one of 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 (Wireless USB) technologies. The short-range communication method of the communication unit 158 ​​may be a short-range communication protocol other than the communication protocols described above, and is not limited to the above description.

[0684] The controller 156 can transmit the input from the sensor 154 to the electronic device 2 side via the communication unit 158. Both will be described with reference to FIG.

[0685] FIG. 37 is a flowchart illustrating a sensor input operation of a stylus pen and an electronic device according to another embodiment.

[0686] As shown, the electronic device 2 transmits a driving signal S40 to the stylus pen 10. The driving signal can charge the power storage 14, 152 of the stylus pen 10. If the power storage 14, 152 is sufficiently charged, this step may be omitted.

[0687] The sensor 154 senses an input (S50). The input may be various depending on the type of the sensor 154.

[0688] The controller 156 generates a sensing signal S52 based on the sensed input, and the generated sensing signal is transmitted to the electronic device 2 S54.

[0689] The electronic device 2 receives the transmitted communication signal and acquires the data sensed by the sensor 154 (S42).

[0690] Separately, the stylus pen 10 transmits a resonance signal generated by the drive signal to the electronic device 2 (S56), and the electronic device 2 detects the touch input from the resonance signal (S44).

[0691] Next, the controller 156 demodulates the driving signal transmitted through the touch electrode 21 to change the resonant frequency of the resonant circuit unit 12. This will be described with reference to FIG.

[0692] FIG. 38 is a flowchart illustrating a resonant frequency changing operation of a stylus pen and an electronic device according to another embodiment.

[0693] As shown, the controller 2624 transmits (S60) a resonant frequency change request signal to the stylus pen 10 via the near field communication module 212. The controller 2624 may transmit the resonant frequency change request signal to the stylus pen 10 before changing the driving frequency of the driving signal.

[0694] If the resonant frequency change request signal is received via the communication unit 158, the controller 156 controls the switch SW3 to change (S70) the resonant frequency of the resonant circuit unit 12. When the resonant frequency is changed, the communication unit 158 ​​may transmit data indicating that the resonant frequency has been changed to the near field communication module 212, or may transmit data indicating the timing at which the resonant frequency is changed to the near field communication module 212. Then, the stylus pen 10 transmits (S72) the changed resonant signal to the electronic device 2.

[0695] If the resonant frequency of the resonant circuit unit 12 is changed, the control unit 2624 changes the frequency of the driving signal to the changed resonant frequency and detects a touch input (S62). If the magnitude of the received resonant signal decreases after the control unit 2624 transmits the frequency change request signal or if a predetermined time has elapsed since transmitting the frequency change request signal, the control unit 2624 may determine that the resonant frequency has been changed.

[0696] Fig. 39(a) is a diagram showing a state in which a stylus pen is close to an electronic device, Fig. 39(b) is a schematic circuit diagram showing a stylus pen and an electronic device, and Fig. 40(a) and (b) are diagrams showing a state in which the stylus pen is close to an electronic device and transmits and receives signals. As shown in Fig. 39(a), the stylus pen 10 and the touch screen 20 can be close to each other.

[0697] The stylus pen 10 of this type generates a resonance signal in response to a drive signal applied to the touch electrode 21, thereby generating a touch input.

[0698] 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 21 on the substrate, and a window 22 on the touch electrode 21.

[0699] The substrate 23 may be an encapsulation substrate for the display panel 251, and is preferably made of a transparent material.

[0700] The touch electrode 21 may include a plurality of first touch electrodes extending in a first direction and arranged along a second direction intersecting the first direction, and a plurality of second touch electrodes extending in the second direction and arranged along the first direction.

[0701] Although the touch electrode 21 is shown in one layer in FIG. 39(a), the first touch electrode and the second touch electrode may be located in different layers, and the present invention is not limited thereto.

[0702] A capacitance Cx is formed between at least one of the touch electrodes 111-1 to 111-n, 121-1 to 121-m and the conductive tip 11 of the stylus pen 10. A drive signal applied to the touch sensor 261 may be transmitted to the stylus pen 10 side and a resonance signal may be transmitted to the touch sensor 261 side via 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.

[0703] The touch sensing unit 260 can detect touches by touch objects other than the stylus pen 10 that uses the method of generating the resonance signal described above (e.g., a user's body part (finger, palm, etc.), a passive or active stylus pen), but is not limited thereto.

[0704] For example, the touch sensing unit 260 may detect a touch by a stylus pen that receives an input of an electric signal and outputs the signal as a magnetic field signal. Furthermore, for example, the touch sensing unit 260 may detect a touch by a stylus pen that receives an input of a magnetic field signal and outputs a resonated magnetic field signal. For example, the electronic device 2 may further include a digitizer. A touch may be detected by the digitizer detecting a magnetic field signal that is electromagnetically resonated (or electromagnetically induced) by the stylus pen.

[0705] As shown in FIG. 39(b), the stylus pen 10 of FIG. 39(a) can be represented by an equivalent circuit including a resistor R1, an inductor L1, and a capacitor C1.

[0706] A drive signal 30 having a predetermined frequency is transmitted to the stylus pen 10 via the touch electrode 21 through the capacitor Cx. This allows the resonant circuit unit 12 of the stylus pen 10, which includes the inductor L1 and the capacitor C1, to resonate with the drive signal 30.

[0707] As shown in (a) of FIG. 40, the drive signal DS from the touch electrode 21 may be transmitted to the conductive tip 11 even when the stylus pen 10 is not in direct contact with the window 22 (i.e., in a hovering state).

[0708] Similarly, as shown in FIG. 40( b ), the resonant signal RS may be transmitted to the touch electrode 21 side via the conductive tip 11 or the non-conductive housing 19 .

[0709] Next, signal transmission and reception between the electronic device 2 and the stylus pen 10 will be described with reference to FIGS.

[0710] FIG. 41 is an equivalent circuit diagram showing a stylus pen and an electronic device that outputs a driving signal, and FIG. 42 is an equivalent circuit diagram showing a stylus pen and an electronic device that receives a sensing signal.

[0711] 41, the stylus pen 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 driver / receiver 2620 and the second driver / receiver 2622 applies a drive signal DS to the touch sensor 261. The drive signal DS is transmitted to the resonant circuit 12 via a capacitance Cx formed between the touch sensor 261 and the stylus pen 10, i.e., between the touch electrode 111 and / or 121 and the conductive tip 11. As a result, the resonant circuit 12 including the inductor L1 and the capacitor C1 of the stylus pen 10 can resonate with the drive signal DS. For resonance to occur, the resonant frequency of the resonant circuit 12 and the frequency of the drive signal DS must be the same or very similar.

[0712] Next, the touch sensor 261 that receives a signal from the stylus pen 10 will be described with reference to FIG.

[0713] FIG. 42 is an equivalent circuit diagram showing a stylus pen and a touch sensor that receives a sensing signal.

[0714] 42(a), the resonant signal RS of the resonant circuit unit 12 is transmitted via the capacitance Cx to at least one of the first driver / receiver unit 2620 and the second driver / receiver unit 2622. At least one of the first driver / receiver unit 2620 and the second driver / receiver unit 2622 includes an amplifier unit 2626.

[0715] A first voltage Vcc may be applied to a first power supply input terminal of the amplifier 2626, and a second voltage GND may be applied to a second power supply input terminal of the amplifier 2626. The amplifier 2626 may amplify or differentially amplify the resonant signal RS input to at least one of the two input terminals using a voltage difference between the first voltage Vcc and the second voltage GND, and output the amplified signal.

[0716] As shown in FIG. 42(b), noise NS1 may flow in from outside the touch sensor 261, or noise NS2 may flow in through the second power input terminal of the amplifier 2626. At this time, the resonant signal RS generated by the driving signal (30 in FIGS. 12 to 17) has the same or a very similar frequency as the driving signal 30. The noises NS1 and NS2 have the same or a similar frequency as the resonant signal RS. The noise NS1 may be transmitted to the input terminal of the amplifier 2626 to which the resonant signal RS is transmitted, or the noise NS1 may be transmitted to the input terminal of the amplifier 2626 to which the resonant signal RS is not transmitted, or the noise NS1 may be transmitted to both input terminals of the amplifier 2626 with different intensities. This may result in a problem in which the signal output from the amplifier 2626 contains noise.

[0717] Furthermore, noise NS2 is transmitted to the second power supply input terminal of the amplifier 2626. The amplifier 2626 amplifies or differentially amplifies the resonant signal RS using the voltage difference between the first voltage Vcc and the noise NS2, which causes a problem that the signal output from the amplifier 2626 contains noise.

[0718] As described above, if noises NS1 and NS2 similar to the driving signal 30 (or the resonance signal RS) are input to the touch sensor 261, it is difficult for the touch sensor 261 to accurately detect a touch input from the stylus pen 10. In the case of an active stylus pen, when noises NS1 and NS2 enter the touch sensor 261, the noise is avoided by a frequency hopping method in which the frequency of the signal transmitted from the active stylus pen is changed. However, in the case of a passive stylus pen, a response to the driving signal DS from the touch sensor 261 is transmitted to the touch sensor 261 as a sensing signal, and it is difficult to implement such a frequency hopping method. For example, the touch sensing unit 260 may further include a coil that applies a current as a driving signal and a digitizer. The stylus pen resonates with a magnetic field signal generated by the coil to which the current is applied. The digitizer detects a magnetic field signal generated by electromagnetic resonance (or electromagnetic induction) of the stylus pen, thereby detecting a touch.

[0719] 43 to 47 are diagrams showing a state in which a stylus pen is placed close to an electronic device.

[0720] As shown in FIGS. 43 to 47, the stylus pen 10 and the touch screen 20 can be placed close to each other.

[0721] The stylus pen 10 of FIGS. 43 to 47 resonates with the drive signal applied to the touch electrode 21, thereby generating a touch input (a resonance signal or an active touch signal).

[0722] 43 to 47 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 21 on the substrate, and a window 22 on the touch electrode 21.

[0723] The substrate 23 may be an encapsulation substrate for the display panel 251, and is preferably made of a transparent material.

[0724] The 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, the touch electrode 21 includes a plurality of first touch electrodes extending in the second direction and a plurality of second touch electrodes extending in the first direction intersecting the second direction, and 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. Although the touch electrode 21 is illustrated in the drawings as being on one layer, the first touch electrodes and the second touch electrodes may be located on different layers, and are not limited thereto.

[0725] A window 22 may be located on the touch electrode 21. The touch electrode 21, the conductive tip 11, and the window 22 may form a capacitance Cx. Therefore, a signal (resonance signal or active touch signal) generated by the stylus pen 10 may be transmitted to the touch electrode 21.

[0726] 43 to 47, the resonant circuit unit 12 can resonate with the loop coil 264, and the degree of mutual resonance occurring between the inductor of the resonant circuit unit 12 and the loop coil 264 is affected by the mutual inductance M. Alternatively, the resonant circuit unit 12 can resonate with the magnetic field generated by the loop coil 264.

[0727] As shown in FIGS. 43, 44, and 45, the loop coil 264 may be located in an area that does not overlap with the touch sensor 261.

[0728] Referring to FIG. 43, the loop coil 264 may be printed on the window 22 using methods such as photolithography, thin film deposition (sputtering), etc., or may be printed on a sheet using methods such as photolithography, thin film deposition (sputtering), etc. and then attached to the window 22, and the method for positioning the loop coil 264 on the window 22 is not limited to the above description.

[0729] FIG. 44 is a diagram showing the arrangement of the loop coil 264 located on the same layer as the touch electrode 21 in the case of an on-cell type touch sensor, and FIG. 45 is a diagram showing the arrangement of the loop coil 264 located on the same layer as the touch electrode 21 in the case of an in-cell type touch sensor.

[0730] 44 and 45, the loop coil 264 may be located on the same layer as the touch electrode 21. The loop coil 264 may be made of the same material as the touch electrode 21. However, the loop coil 264 may be located on a different layer from the touch electrode 21 and may be made of a different material.

[0731] In FIG. 44, on the sealing substrate 23 of the display panel 251, the loop coil 264 and the touch electrode 21 are located in the same layer.

[0732] 45, the display panel 251 includes a touch electrode 21 and a loop coil 264. That is, the substrate 23 may be a color filter substrate of the display panel 251, and the touch electrode 21 and the loop coil 264 may be located between the color filter substrate 23 and the TFT substrate of the display panel 251. Alternatively, the touch electrode 21 and the loop coil 264 may all be located on the top and bottom of the color filter substrate 23.

[0733] 46 and 47, the loop coil 264 may be positioned in an area overlapping with the touch sensor 261. The loop coil 264 may be printed directly on the substrate of the display panel 251 by methods such as photolithography, thin film sputtering, etc., or may be printed on a sheet by methods such as photolithography, thin film sputtering, etc. and then attached to the substrate of the display panel 251. The method for positioning the loop coil 264 on the substrate of the display panel 251 is not limited to the above description.

[0734] As shown in FIG. 46, the loop coil 264 may be arranged in a partial area of ​​the touch sensor 261, at an outer corner (or an end area) of the touch sensor 261, or at a position close to the outer corner, and as shown in FIG. 47, the loop coil 264 may be arranged corresponding to the entire area of ​​the touch sensor 261.

[0735] The loop coil 264 may be located on a different layer from the touch electrode 21. However, as shown in FIGS. 44 and 45, the loop coil 264 may be located on the same layer as the touch electrode 21 in an area overlapping the touch sensor 261, and may be made of the same material.

[0736] An example of signal transmission and reception between a stylus pen and an electronic device will be described with reference to FIGS.

[0737] 48 to 53 are schematic circuit diagrams showing a stylus pen and an electronic device.

[0738] 48 and 49, the resonant circuit section 12 can be represented by an equivalent circuit including a resistor Rp, an inductor Lp, and a capacitor Cp, or an equivalent circuit including a resistor Rs, an inductor Ls, and a capacitor Cs.

[0739] As shown in Figures 48 and 49, when the loop coil Ld forms a magnetic field due to the drive signal applied by the power supply 40, a current is induced in the inductor Lp of the stylus pen 10, causing the resonant circuit unit 12 to resonate.

[0740] Even when the stylus pen 10 is not in direct contact with the window 22 (that is, when it is hovering), the resonant circuit 12 can resonate due to the magnetic field generated by the loop coil Ld.

[0741] As shown in FIGS. 50 to 53, when the loop coil and the internal capacitor resonate with the driving signal applied by the power source 40, the resonant circuit unit 12 of the stylus pen 10 can also mutually resonate with the loop coil and the internal capacitor. ...

Claims

1. An OLED display panel including an encapsulation substrate and having a display area and a non-display area; a touch electrode layer formed directly on the upper surface of the encapsulation substrate of the OLED display panel and disposed on the display area, the touch electrode layer including at least one touch electrode; a first conductive wiring formed directly on the upper surface of the encapsulation substrate of the OLED display panel, disposed on the display area, and disposed in the same layer as the touch electrode layer; a second conductive wiring formed directly on the upper surface of the encapsulation substrate of the OLED display panel, disposed on the non-display area, and disposed in the same layer as the touch electrode layer; a touch controller configured to sense a position of a stylus pen positioned on the OLED display panel; the first and second conductive traces are configured to generate a magnetic field signal for driving the stylus pen; the first and second conductive lines are made of the same material as the at least one touch electrode; The touch controller is configured to apply a drive signal to one end of the first conductive trace to drive the stylus pen.

2. 2. The electronic device according to claim 1, further comprising: a magnetic field shielding sheet disposed below the OLED display panel and arranged to overlap the first conductive wiring or / and the second conductive wiring.

3. a window disposed on the OLED display panel; 10. The electronic device of claim 1, wherein the window has a first region disposed over the first conductive trace and a second region disposed over the second conductive trace.

4. the touch controller is configured to apply a first driving signal and a second driving signal to both ends of either the first conductive wire or the second conductive wire, respectively; The electronic device of claim 1 , wherein the first drive signal is in antiphase with the second drive signal.

5. The electronic device according to claim 1 , wherein the first conductive trace extends along a boundary of a display area of ​​the OLED display panel.

6. the OLED display panel includes at least one folding region; The electronic device according to claim 1 , wherein the folding area is configured with a curved surface, at least a portion of which has a predetermined curvature when the OLED display panel is folded.

7. a magnetic field shielding sheet disposed under the OLED display panel; 7. The electronic device of claim 6, wherein the magnetic field shielding sheet includes a first magnetic field shielding sheet disposed in a first region and a second magnetic field shielding sheet disposed in a second region separated by the folding region below the OLED display panel.

8. the at least one touch electrode includes a first touch electrode and a second touch electrode; The electronic device of claim 1 , wherein one of the first touch electrode and the second touch electrode is configured to transmit a signal generated by the stylus pen.

Images