Touch input device

Abstract

To provide a touch input device that can minimize the influence of flicker.SOLUTION: A touch input device includes as a touch input device including a display panel, a touch sensor including a plurality of first electrodes and a plurality of second electrodes disposed so as to intersect with the first electrodes, and a touch controller electrically connected to the first electrodes and the second electrodes and configured to control the touch sensor. The second electrode includes a pair of electrode parts. One electrode part of the pair of electrode parts is disposed to get adjacent to the electrode of a part of at least one of the plurality of first electrodes. The other electrode part of the pair of electrode parts of the second electrode is disposed to get adjacent to the electrode of the rest of at least one of the plurality of first electrodes. The touch controller is configured to drive the touch sensor in synchronization with a horizontal synchronous signal applied to each scan line of the display panel.SELECTED DRAWING: Figure 31

Description

Technical Field

[0001] The present invention relates to a touch input device, and more particularly, to a touch input device that drives a touch sensor in consideration of the driving time of a display panel, thereby minimizing the influence of flicker that occurs in a display panel due to display noise caused by driving the display panel and driving the touch sensor.

Background Art

[0002] Various types of input devices are used for operating computing systems. For example, input devices such as buttons, keys, joysticks, and touch screens are used. Due to the easy and convenient operation of touch screens, the use of touch screens is increasing when operating computing systems. As a type of information input device, touch sensors are used by being provided on display panels. As an example, a touch sensor can be attached to one surface of a display panel, or can be manufactured integrally with a display panel for use. A user can input information by touching the touch sensor while viewing an image displayed on the screen of the display panel.

[0003] Fig. 1 is a drawing schematically illustrating a conventional stacked structure of an OCTA type.

[0004] OCTA, which is one type of touch screen panel technology, is an acronym for On Cell Touch AMOLED In abbreviation, as shown in Figure 1, a touch sensor is placed on top of the AMOLED display cell. It is a type of TSP (Touch Screen Panel) with SOR (solar) directly deposited onto it. In other words, it is a smartphone This technology integrates the touchscreen functionality of a tablet into an OLED panel. Because there is no reinforced glass between the polarity and the sensor, it has the effect of providing higher clarity than existing general TSPs. .

[0005] Y-OCTA has developed a touchscreen that allows touch sensors to be quickly deposited onto the cell. It is a flexible OLED panel. The "OCTA" is Samsung Display's flexible OLED. The name is derived from the brand name "YOUM," with the letter Y added. Y-OCTA technology is used in OLED manufacturing. This process is applied to the thin-film encapsulation (TFE) step. Aluminum metal used as a touch sensor between organic material and polarizer Y-OCTA is a system that uses a Lumesh sensor pattern to create a touchscreen. Then, bring the polarizing plate close to the cover window and attach it, and use the curved edge to emit light. This can solve the visibility problem that arises. Also, support film By removing the lamination process, the panel thickness is reduced, and the lamination process is eliminated, lowering the price. It can be reduced.

[0006] Conventional touch input devices with Y-Octah touchscreen panels are LGM (Low Gr There are problems with the situation (round Mass). The aforementioned problem is that the touch sensor is driven by a single layer or a double layer. When the dynamic electrode and the receiving electrode are realized, the touch input device on which the touch sensor is mounted is used When a predetermined touch occurs while the user is not holding it with their hand (floating state), touch If a signal that should be properly detected by the input device disappears or is not detected at all, This phenomenon occurs when a signal that is not being received is split and detected as having been touched at two or more locations. Furthermore, conventional touch input devices equipped with a Y-Okta touchscreen panel, touch There is a flicker problem in the display panel caused by the sensor's drive. Cars are a phenomenon where the display screen flashes or vibrates very rapidly, and can be caused by a variety of factors. Therefore, it can occur.

[0007] Traditionally, to solve this flicker problem, the image processing was performed frame by frame. This involves using dithering, lowering the drive voltage of the touch sensor, or VRR (Variab). When operating (refresh rate), the display driver chip (DDI) receives the frame rate (frame An attempt to change the frequency of the touch sensor's drive signal to match the rate information received. Although such attempts have been made, these have not been able to completely solve the flicker problem. [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] The problem that this invention aims to solve is display noise caused by the driving of the display panel. The objective is to provide a touch input device that can minimize size.

[0009] Furthermore, the flicker effect that can occur in the display panel due to the operation of the touch sensor. To provide a touch input device capable of minimizing

[0010] Another object of the present invention is to provide a touch input device capable of improving erroneous touch operation in the LGM state . Means for Solving the Problem

[0011] A touch input device according to an embodiment of the present invention is a touch input device including a display panel comprising: a touch sensor including a plurality of first electrodes and a plurality of second electrodes arranged to intersect with the plurality of first electrodes; and a touch controller electrically connected to the plurality of first electrodes and the plurality of second electrodes and configured to control the touch sensor, wherein the second electrode includes a pair of electrode portions, one of the pair of electrode portions is arranged adjacent to at least one partial electrode among the plurality of first electrodes, and the other of the pair of electrode portions of the second electrode is arranged adjacent to at least the remaining electrode among the plurality of first electrodes, and the touch controller is configured to drive the touch sensor in synchronization with at least one horizontal synchronization signal applied by the display panel, and after the horizontal synchronization signal starts to be applied to the display panel, the touch controller is configured to drive the touch sensor for a predetermined period of time. .

[0012] A touch input device according to another embodiment of the present invention is a touch input device including a display panel comprising: a touch sensor including a plurality of first electrodes and a plurality of second electrodes arranged to intersect with the plurality of first electrodes; and a touch controller electrically connected to the plurality of first electrodes and the plurality of second electrodes and configured to control the touch sensor. ​​​​ The second electrode includes a pair of electrode portions, and one of the electrode portions of the pair of electrode portions is the front The second electrode is arranged so as to be adjacent to at least one of the multiple first electrodes. Of the pair of electrode portions of the pole, the other electrode portion is at least one of the plurality of first electrodes. The touch controller is positioned adjacent to one of the remaining electrodes, and the display The touch sensor is set to a time interval different from the time interval in which the horizontal synchronization signal is applied to the ray panel. It is configured to be driven. [Effects of the Invention]

[0013] By using the touch input device according to the embodiment of the present invention, the drive of the display panel This has the advantage of minimizing display noise.

[0014] Furthermore, the flicker effect that can occur in the display panel due to the operation of the touch sensor. This has the advantage of being able to minimize [the problem].

[0015] Furthermore, it has the advantage of improving touch malfunctions in LGM mode. [Brief explanation of the drawing]

[0016] [Figure 1] This is a schematic diagram showing a conventional octa-type laminated structure. [Figure 2] This is a schematic diagram of a touch input device according to one embodiment of the present invention. [Figure 3] Figure 2 is a diagram illustrating a receiving circuit section 110, which is an example of a touch controller 15 shown in the diagram. [Figure 4] Figure 2 is a diagram illustrating the receiving circuit section 110' of another example of the touch controller 15 shown. [Figure 5]Figure 2 is a diagram illustrating yet another example of the receiving circuit section 110'' of the touch controller 15 shown. [Figure 6] Figure 2 is a diagram illustrating yet another example of the receiving circuit section 110''',110'''' of the touch controller 15 shown. [Figure 7] Figure 2 is a diagram illustrating yet another example of the receiving circuit section 110''''' of the touch controller 15 shown. [Figure 8] Figure 2 is a partial plan view of one embodiment of the touch sensor 10 shown. [Figure 9] Figure 8 is a plan view showing the touch sensor separated into layers. [Figure 10] Figure 8 is a diagram illustrating the electrical connection of multiple receiving electrodes shown. [Figure 11] Figure 2 is a plan view of some other embodiments of the touch sensor 10 shown. [Figure 12] Figure 11 is a plan view showing the touch sensor separated into layers. [Figure 13] Figure 11 is a diagram illustrating the electrical connection of multiple receiving electrodes shown. [Figure 14] Figure 2 is a plan view of part of yet another embodiment of the touch sensor 10 shown. [Figure 15] Figure 14 is a plan view showing the touch sensor separated into layers. [Figure 16] Figure 2 is a plan view of part of yet another embodiment of the touch sensor 10 shown. [Figure 17] Figure 16 is a plan view showing the touch sensor separated into layers. [Figure 18] Figure 2 is a plan view of part of yet another embodiment of the touch sensor 10 shown. [Figure 19] This is a schematic diagram of a touch input device according to another embodiment of the present invention. [Figure 20](a) is a graph showing that multi-driving is performed separately for each of the four drive electrodes in the touch input device shown in Figure 2, and (b) is an example of the drive signals (or drive codes) applied to the four drive electrodes Tx0, Tx1, Tx2, and Tx3 that are driven simultaneously during multi-driving in Figure 20(a). [Figure 21] (a) is a graph showing that the entire drive electrode is multi-driven in the touch input device shown in Figure 19, and (b) is an example of the drive signals (or drive codes) applied to all drive electrodes Tx0, Tx1, Tx2, Tx3, ... that are driven simultaneously during the multi-driven operation in Figure 21(a). [Figure 22] Figure 8 is a diagram illustrating the drive circuit section 130' of an example of the touch controller 15 shown in Figure 8. [Figure 23] Figure 8 is a diagram illustrating another example of the drive circuit section 130'' of the touch controller 15 shown in the figure. [Figure 24] Figure 8 is a diagram illustrating yet another example of the drive circuit section 130'''' of the touch controller 15 shown. [Figure 25] Figure 19 is a diagram illustrating yet another example of the drive circuit section 130''''' of the touch controller 15 shown. [Figure 26] Figure 19 is a partial plan view of one embodiment of the touch sensor 10' shown. [Figure 27] Figure 19 is a plan view of some other embodiments of the touch sensor 10' shown. [Figure 28] Figure 19 is a plan view of part of yet another embodiment of the touch sensor 10' shown. [Figure 29] Figure 19 is a plan view of part of yet another embodiment of the touch sensor 10' shown. [Figure 30] Figure 19 is a plan view of part of yet another embodiment of the touch sensor 10' shown. [Figure 31] These are diagrams illustrating the first driving method of the touch input devices 1 and 1' shown in Figures 2 and 8. [Figure 32] These are diagrams illustrating the second driving method of the touch input devices 1 and 1' shown in Figures 2 and 8. [Figure 33] These are diagrams illustrating the third driving method of the touch input devices 1 and 1' shown in Figures 2 and 8. [Figure 34] These are diagrams illustrating the fourth driving method for the touch input devices 1 and 1' shown in Figures 2 and 8. [Figure 35] These are diagrams illustrating the fifth driving method for the touch input devices 1 and 1' shown in Figures 2 and 8. [Modes for carrying out the invention]

[0017] The various embodiments of the touch input device described in this document are, as electronic devices, for example, smartphones. Smartphones, tablet PCs (personal computers), and in-vehicle displays. Play devices, mobile phones, video phones, e-book readers (e-books) Reader), laptop PC (laptop personal computer), netbook computer (netbook computer), mobile medical devices, cameras, or wearable devices It may include at least one of the wearable devices. Here, a wearable device is A Accessory type (e.g., watch, ring, bracelet, anklet, necklace, glasses, etc.) Contact lenses, or head-mounted devices (HMDs), textiles or clothing Body-shaped (e.g., electronic clothing), body-attached (e.g., skin pads or tattoos), This may include at least one of the following: a bio-implantable type (e.g., an implantable circuit).

[0018] Figure 2 is a schematic diagram of a touch input device according to one embodiment of the present invention.

[0019] Referring to Figure 2, the touch input device 1 according to one embodiment of the present invention includes a touch sensor 10, and A display panel 20, a touch controller 15 for controlling the touch sensor 10, and the aforementioned A display controller 25 for controlling the display panel 20 may be included. So, the touch controller 15 and the display controller 25 function as a single controller. It may be integrated.

[0020] The touch sensor 10 includes multiple electrodes (or patterns). The multiple electrodes include multiple first It includes an electrode and multiple second electrodes.

[0021] The touch controller 15 may include a drive unit 12, a sensing unit 11, and a control unit 13.

[0022] The drive unit 12 applies a drive signal (or TX signal) to the touch sensor 10 under the control of the control unit 13. The sensing unit 11 receives the sensing signal (or RX signal) received from the touch sensor 10.

[0023] The drive unit 12 can sequentially supply drive signals to multiple drive electrodes of the touch sensor 10. .

[0024] The sensing unit 11 receives signals output from multiple receiving electrodes of the touch sensor 10. The signal contains information on the change in capacitance between the adjacent driving electrode and the receiving electrode. This may include LGM noise signals and display noise signals.

[0025] The sensing unit 11 subtracts two signals from the signals output from multiple receiving electrodes to obtain the subtracted signal. It can output a number, and the output subtraction signal is converted from analog to digital. It can output data. For this purpose, the sensing unit 11 may include a comparator and an ADC.

[0026] The control unit 13 determines whether or not there is a touch based on the digital signal output from the sensing unit 11 and / or It can detect the touch position.

[0027] In Figure 2, the sensing unit 11, the drive unit 12, and the control unit 13 are shown separately for the sake of explanation, This is not limited to this. For example, at least one of the sensing unit 11, the drive unit 12, and the control unit 13 or Two or more of these may be realized in a single module, unit, chip, or circuit. The control unit 11, the drive unit 12, and the control unit 13 are realized in a single module, unit, chip, or circuit. It's okay.

[0028] As shown in Figure 1, the octa-type configuration, the touch sensor 10 is connected to the display panel 20. They may be placed on top of the display panel 20, and in the in-cell method, they may be placed within the cells of the display panel 20. It may be positioned as follows: In some cases, the touch sensor 10 may be positioned below the display panel 20. This may be done. For example, the touch sensor 10 is located on the upper substrate of the display panel 20 and and / or the outer surface of the lower substrate (for example, the upper surface of the upper substrate or the lower surface of the lower substrate), , formed directly on the internal surface (for example, the lower surface of the upper substrate or the upper surface of the lower substrate) i. The touch sensor 10 is coupled to the display panel 20 to form a touchscreen panel. It can be configured as a TSP or a touch display.

[0029] The display panel 20 has a large number of scan lines (or gate lines) and a large number of A data line may be placed in the area where the scan line and data line intersect. Cells can be positioned.

[0030] The display panel 20 has an active region in which a large number of subpixels are arranged, and the active The active region may include an inactive region located outside the active region. The active region is the touch input device The display screen can be configured. The display screen has a vertical length that is greater than the horizontal length. It may have a long rectangular shape.

[0031] The display controller 25 controls the display panel 20, Gate drive circuit and data drive circuit for driving various signal lines arranged on panel 20 , and may include a display control unit.

[0032] The gate drive circuit is controlled by the display control unit and controls the display panel. The numerous scan lines arranged sequentially output display scan signals, allowing for the output of multiple scan lines. The timing of the pixel's movement can be controlled.

[0033] The data driving circuit receives video data from the display control unit and processes the video data. It can be converted to an analog data voltage. The data driving circuit uses scan lines The data voltage (Vdata) is set in accordance with the timing at which the scan signal is applied via the system. The data is output to the data line, and each subpixel represents the brightness based on the video data. It can be controlled in that way.

[0034] The display control unit supplies various control signals to the gate drive circuit and the data drive circuit. This allows for the control of the gate drive circuit and the data drive circuit.

[0035] The touch sensor 10 has multiple drive electrodes Tx0, Tx1, Tx2, ... and multiple receiving electrodes Rx0, Rx1, Rx2 Includes Rx3, ...

[0036] Multiple driving electrodes Tx0, Tx1, Tx2, ... and multiple receiving electrodes Rx0, Rx1, Rx2, Rx3, ... They may be arranged so as to intersect each other. Multiple drive electrodes Tx0, Tx1, Tx2, ... and multiple Between the receiving electrodes Rx0, Rx1, Rx2, Rx3, ... and especially at their intersections, there is a predetermined mutual capacitance. A can be formed on an object that is in contact with or close to the surface of the touch input device. Therefore, the capacitance can be changed.

[0037] Each driving electrode Tx0, Tx1, Tx2, ... extends in the first axial direction, and each receiving electrode Rx0, Rx1, Rx2, Rx3, ... It can extend in a second axis direction that is different from the first axis direction. Here, the second axis direction is the same as the first axis direction. It may be in a direction perpendicular to it.

[0038] Each of the multiple receiving electrodes Rx0, Rx1, Rx2, Rx3, ... consists of a pair of receiving electrode sections (Rx0a and Rx0b Includes Rx1a and Rx1b, Rx2a and Rx2b, Rx3a and Rx3b, ...). A pair of receiving electrode sections (Rx0a and Rx0b, Rx1a and Rx1b, Rx2a and Rx2b, Rx3a and Rx3b, ...) are the first receiving electrode section Rx0a, Rx1a, Rx2a, Rx3a , ... and second receiving electrode sections Rx0b, Rx1b, Rx2b, Rx3b, ... are included.

[0039] Among multiple receiving electrodes Rx0, Rx1, Rx2, Rx3, ..., the first receiving electrode portion Rx0a, Rx1a, Rx2a, Rx3a ,… refers to some of the multiple drive electrodes Tx0, Tx1, Tx2,…, including Tx0, Tx2, Tx4, Tx6, ...and may be arranged so as to form a mutual capacitance cm, and multiple receiving electrodes Rx0, Rx1, Rx2 Among the second receiving electrode sections Rx0b, Rx1b, Rx2b, Rx3b, ..., there are multiple driving electrodes Tx0, Tx1, Tx2 The remaining drive electrodes Tx1, Tx3, Tx5, Tx7, ... of the ... shall form mutual capacitance with the ... It is acceptable to place it there.

[0040] Among multiple receiving electrodes Rx0, Rx1, Rx2, Rx3, ..., the first receiving electrode portion Rx0a, Rx1a, Rx2a, Rx3a ,… refers to some of the multiple drive electrodes Tx0, Tx1, Tx2,…, including Tx0, Tx2, Tx4, Tx6, ...can be placed right next to each other, and the remaining drive electrodes Tx1, Tx3, Tx5, Tx7,... They may be arranged so as to be separated by a predetermined distance and not adjacent to each other. Here, the first receiving electrode parts Rx0a,R Between x1a, Rx2a, Rx3a, ... and the remaining drive electrodes Tx1, Tx3, Tx5, Tx7, ... there is at least 1 Other electrodes may be placed as described above. These other electrodes include some of the driving electrodes Tx0, Tx2, Tx4, Tx6. ...that's fine.

[0041] Of the multiple receiving electrodes Rx0, Rx1, Rx2, ... the second receiving electrode portions Rx0b, Rx1b, Rx2b, Rx3b, ... are Of the multiple drive electrodes Tx0, Tx1, Tx2, ..., the remaining drive electrodes are Tx1, Tx3, Tx5, Tx7, ... They may be arranged adjacent to each other, and some of the drive electrodes Tx0, Tx2, Tx4, Tx6, ... may be right next to each other. They may be arranged so as to be separated by a predetermined distance. Here, the second receiving electrode section Rx0b, Rx1b, R Between x2b, Rx3b, ... and some of the drive electrodes Tx0, Tx2, Tx4, Tx6, ... there is at least one Other electrodes may be placed. These other electrodes are connected to the remaining drive electrodes Tx1, Tx3, Tx5, Tx7, ... That's fine.

[0042] When a drive signal is applied to some of the drive electrodes Tx0, Tx2, Tx4, Tx6, ..., mutual electrostatic capacitance occurs. A first signal is output from the first receiving electrode sections Rx0a, Rx1a, Rx2a, Rx3a, ... which form the quantity, and The second receiving electrode section Rx0b, Rx1b, Rx2b, Rx3b, ... which does not substantially form mutual capacitance, receives the second signal A signal is output. The touch controller 15 subtracts the second signal from the output first signal and It can perform differential amplification to output a third signal, and based on the said third signal, the object The position can be detected. Here, the first signal contains the mutual electrostatic capacitance due to the object. Information on the amount of change in quantity, display noise (e.g., zebra noise), and changes due to image changes. Quantity, LGM noise in floating state, cathode retransmission (Cathode re- The transmission phenomenon (the larger the resistance of the ELVSS layer (RELVSS)) The weaker the GND (i.e., the weaker the RX), the more high-frequency components of the signal are affected. This includes noise caused by phenomena such as signals transmitted to the sensor and added to the main signal. Hmm. On the other hand, the second signal contains almost no information about the change in mutual capacitance due to the object. However, the remaining noise information (display noise (e.g., Zebra noise), due to image changes) The amount of change, LGM noise in the floating state, cathode retransmission phenomenon (This includes noise, etc.) Therefore, the sensing unit 11 subtracts the second signal from the first signal. Therefore, the signal input to the control unit 13 does not contain noise information, and interaction between objects is not possible. Only information on the change in capacitance may be included.

[0043] Conversely, if a drive signal is applied to the remaining drive electrodes Tx1, Tx3, Tx5, Tx7, ... then the phase The second signal is output from the second receiving electrode sections Rx0b, Rx1b, Rx2b, Rx3b, ... which form mutual capacitance. , and the first receiving electrode portions Rx0a, Rx1a, Rx2a, Rx3a, ... which do not substantially form mutual capacitance with these first receiving electrode portions A first signal is output from there. The touch controller 15 receives the first signal from the output second signal. A third signal can be output by subtraction or differential amplification, and based on the third signal, The touch position of the object can be detected. Here, the second signal is a phase due to the object. Since it contains information about the change in mutual capacitance, the third signal is obtained by subtracting the first signal from the second signal. The signal contains no noise information, only information about the change in mutual capacitance caused by the objects. It is included.

[0044] Multiple driving electrodes Tx0, Tx1, Tx2, ... and multiple receiving electrodes Rx0, Rx1, Rx2, ... are in the same layer (1 They may be placed together in the same layer, or each may be placed in a different double layer (2 layers). It is acceptable. Also, some of the multiple drive electrodes Tx0, Tx1, Tx2, ... are different from the rest. They may be arranged in layers, and some of the multiple receiving electrodes Rx0, Rx1, Rx2, ... may be different from the rest. They may be arranged in layers. Multiple driving electrodes Tx0, Tx1, Tx2, ... and multiple receiving electrodes Rx0, Rx1 Rx2, ... have a diamond pattern, circular, elliptical or polygonal shape. That's fine.

[0045] Multiple drive electrodes Tx0, Tx1, Tx2, ... and multiple receiving electrodes Rx0, Rx1, Rx2, ... are metal mesh It consists of a thin film encapsulation (TFE) layer within the display panel 20. It is acceptable to pattern it above.

[0046] Figure 3 illustrates the receiving circuit section 110 according to an example of the touch controller 15 shown in Figure 2. This is the drawing.

[0047] Referring to Figure 3, the receiving circuit 110 is connected to the multiple receiving electrodes Rx0 of the touch sensor 10 shown in Figure 2. They are electrically connected as Rx1, Rx2, Rx3, ...

[0048] Each of the multiple receiving electrodes Rx0, Rx1, Rx2, Rx3, ... of the touch sensor 10 shown in Figure 2 is It includes a pair of receiving electrode sections (Rx0a and Rx0b, Rx1a and Rx1b, Rx2a and Rx2b, Rx3a and Rx3b, ...).

[0049] The receiving circuit section 110 may include a plurality of differential amplifiers DA0, DA1, DA2, DA3, ... Each differential amplifier Each differential amplifier DA0, DA1, DA2, DA3, ... includes a pair of input terminals. ...can differentially amplify the two signals received at the pair of input terminals and output them. .

[0050] The pair of input terminals receive each pair of receiving electrodes Rx0, Rx1, Rx2, Rx3, ... of the touch sensor 10. This corresponds to the signal electrode section (Rx0a and Rx0b, Rx1a and Rx1b, Rx2a and Rx2b, Rx3a and Rx3b, ...). The pair of input terminals of the 0th differential amplifier DA0 are connected to the pair of receiving electrode sections Rx0a and Rx0b of the 0th receiving electrode Rx0. Each is electrically connected. In this manner, the remaining differential amplifiers DA1, DA2, DA3, ... The remaining receiving electrodes Rx1, Rx2, Rx3, ... are electrically connected.

[0051] The signal output to the output terminal of each differential amplifier DA0, DA1, DA2, DA3, ... is a differential signal * (diff It may be an erential signal, or it may be a single signal.

[0052] The receiving circuit 110 may be included in the sensing unit 11 shown in Figure 2.

[0053] Figure 4 illustrates the receiving circuit section 110' of the touch controller 15 shown in Figure 2, according to another example. This is a drawing for that purpose.

[0054] Referring to Figure 4, the receiving circuit section 110' receives multiple power signals from the touch sensor 10 shown in Figure 2. The poles Rx0, Rx1, Rx2, Rx3, ... are electrically connected.

[0055] The receiving circuit section 110' has multiple amplifiers P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, ... Includes numerical signal processors SP0, SP1, SP2, SP3, ...

[0056] Each receiving electrode Rx0, Rx1, Rx2, Rx3, ... of the touch sensor 10 has a pair of receiving electrode portions (Rx0a and Rx0b Each of the Rx1a and Rx1b, Rx2a and Rx2b, Rx3a and Rx3b, ... is a pair of amplifiers (P0a and P0b, It is electrically connected to the input terminals of P1a and P1b, P2a and P2b, P3a and P3b, ...

[0057] Each signal processor SP0, SP1, SP2, SP3, ... controls the pair of amplifiers (P0a and P0b, P1a and P1b, P2 It is electrically connected to the output terminals of the pair of amplifiers (P0a and P0b, P3a and P3b, ...). One of the amplifiers P0a, P1a, P2a, P3a, ... (P1a and P1b, P2a and P2b, P3a and P3b, ...) It may be connected to the positive (+) input terminal of signal processors SP0, SP1, SP2, SP3, ... and the remaining one The amplifiers P0b, P1b, P2b, P3b, ... are connected to the negative (-) input terminals of the signal processors SP0, SP1, SP2, SP3, ... It may be connected to this.

[0058] The receiving circuit section 110' shown in Figure 4 is one of the receiving electrodes Rx0, Rx1, Rx2, Rx3, ... The signals from the pair of receiving electrodes (Rx0a and Rx0b, Rx1a and Rx1b, Rx2a and Rx2b, Rx3a and Rx3b, ...) After receiving the signal from the input terminal in a single-ended configuration, it is then processed through an amplifier and signal processing unit. This allows for differential operation.

[0059] On the other hand, the receiving circuit section 110' shown in Figure 4, and each pair of receiving electrodes Rx0, Rx1, Rx2, Rx3, ... Analog signals from the signal electrode section (Rx0a and Rx0b, Rx1a and Rx1b, Rx2a and Rx2b, Rx3a and Rx3b, ...) After being converted to a digital signal, it is then divided into digital blocks. It may be executed.

[0060] Figure 5 shows the receiving circuit section 110'' of the touch controller 15 shown in Figure 2, in yet another example. This is a diagram to explain [the concept].

[0061] Referring to Figure 5, the receiving circuit section 110'' receives multiple touch sensors 10 shown in Figure 2. The electrodes Rx0, Rx1, Rx2, Rx3, ... are electrically connected.

[0062] The receiving circuit section 110'' consists of multiple amplifiers P0, P1, P2, P3, ... and multiple signal processors SP0, SP1 Includes SP2, SP3, ...

[0063] Multiple receiving electrodes Rx0, Rx1, Rx2, Rx3, ... of the touch sensor 10, receiving electrode parts Rx0a, Rx0b, Rx 1a, Rx1b, ... are electrically connected one-to-one to the input terminals of multiple amplifiers (P0 and P1, P2 and P3, ...). For example, the 0th amplifier (P0) is connected to the 1st receiving electrode section Rx0a of the 0th receiving electrode Rx0, and the 1 Amplifier P1 is connected to the second receiving electrode section Rx0b of the first receiving electrode Rx0, and the second amplifier P2 is connected to the first receiving electrode R The first receiving electrode section Rx1a of x1 is connected, and the third amplifier P3 is connected to the second receiving electrode section Rx1b of the first receiving electrode Rx1. This is how it is connected. In this manner, other receiving electrode sections are electrically connected to multiple amplifiers.

[0064] The output terminals of multiple amplifiers P0, P1, P2, P3, ... are connected to multiple signal processors SP0, SP1, SP2, SP3, ...and are electrically connected. Here, the first amplifier, amplifier 0 P0, and the last amplifier are The remaining amplifiers are electrically connected to the two signal processors, respectively. Although not shown in the diagram, the first amplifier, amplifier P0 (number 0), and the last amplifier are separate signals. It may be electrically connected to the processor. Such a separate signal processor is connected to the output of the 0th amplifier P0. It can output the difference between the signal and the output signal of the final amplifier.

[0065] Each signal processor SP0, SP1, SP2, SP3, ... controls two of the multiple amplifiers P0, P1, P2, P3, ... It is electrically connected to the output terminal of the amplifier. In other words, each signal processor SP0, SP1, SP2, SP3 ...can be configured to receive differential signals between receiving electrodes. For example, The output terminal of the 0th amplifier P0 is connected to the positive (+) terminal of the 0th signal processor SP0, and the output terminal of the 1st amplifier P0 is connected to the negative (-) terminal. The output terminal of the amplifier P1 may be connected. The output of the first amplifier P1 is connected to the positive (+) terminal of the first signal processor SP1. The terminals are connected, and the output terminal of the second amplifier P2 may be connected to the negative (-) terminal. Second signal processor SP2 The output terminal of the second amplifier P2 is connected to the positive (+) terminal, and the output terminal of the third amplifier P3 is connected to the negative (-) terminal. They may be connected. The output terminal of the third amplifier P3 is connected to the positive (+) terminal of the third signal processor SP3, and the negative terminal is connected to the positive (+) terminal of the third signal processor SP3. The output terminal of a fourth amplifier (not shown) may be connected to the (-) terminal. In this manner, iteratively The remaining amplifiers shown in the drawing may be electrically connected to the signal processor.

[0066] The receiving circuit section 110'' shown in Figure 5 detects water on the touch sensor 10 shown in Figure 2. Special situations such as when something is positioned, or when a metallic object like a coin is positioned. This prevents accidental touches.

[0067] Figures 6(a) and 6(b) show yet another example of the touch controller 15 shown in Figure 2. This is a diagram illustrating the signal circuit section 110''',110''''.

[0068] Referring to Figure 6(a), the receiving circuit section 110''' consists of a pair of receiving electrode sections for each receiving electrode Rx0. Includes a switch element SW for electrically short-circuiting or opening Rx0a and Rx0b. Control unit (not shown) The switch element SW is controlled by (not), but when the switch element SW is closed, each received power The pair of receiving electrode portions Rx0a and Rx0b of pole Rx0 are electrically connected to each other. On the other hand, as shown in the drawing... Although not present, a switch element may also be placed between the pair of receiving electrode portions of other receiving electrodes.

[0069] Such a receiving circuit section 110'' is controlled by a switch element SW, which then receives a pair of receivers. The electrode sections Rx0a and Rx0b can be electrically connected. This control method is shown in Figure 2. The touch sensor 10 is driven in self-sensing mode, or Stylus sensing mode for detecting pen signals from illustrations. It can be used when driving the device.

[0070] The methods for driving the touch sensor 10 include self-sensing and mutual sensing. There is mutual sensing. Self-sensing involves marking each electrode with a drive signal. At the same time as the application, a sensing signal is received from the electrode, and the object changes based on the capacitance of each electrode itself. This method recognizes whether or not an object is touched and / or the location of the touch. On the other hand, mutual In real sensing, the mutual capacitance between the driving electrode and the receiving electrode changes depending on the object. This is a method of recognizing that it is doing so. The touch controller 15 that controls the touch sensor 10 is above Use one of the two methods to determine whether or not an object is touched and / or where it is touched. It can also detect touch, and both methods can be used to determine whether or not an object is being touched and / or It can sense the touch position. Here, if both methods are used, time division This allows the two systems to be controlled to operate independently of each other.

[0071] Referring to Figure 6(b), the receiving circuit section 110'''' consists of multiple switch elements SW1, SW2, S Includes W3, SW4, and SW5.

[0072] The first switch element SW1 performs the same function as the switch element SW shown in Figure 6(a). The first switch element SW1 is connected between the pair of receiving electrode sections Rx0a and Rx0b. Element SW1 can be short-circuited or opened by control of a control unit (not shown).

[0073] The second to fifth switch elements SW2, SW3, SW4, SW5 each have a pair of receiving electrode portions Rx0a Which of the Rx0b receiving electrodes is connected to the input terminal of the amplifier (not shown) located at the rear end? It is possible to control whether or not it is possible.

[0074] The second switch element SW2 is connected to one end of the first switch element SW1, and the third switch element SW3 is It may be connected to the other end of the switch element SW1.

[0075] The fourth switch element SW4 is located between the output terminal of the second switch element SW2 and AC ground. The fifth switch element SW5 is connected between the output terminal of the third switch element SW3 and AC ground. That's fine.

[0076] On the other hand, in the pair of receiving electrode sections Rx0a and Rx0b, one of the receiving electrode sections is positioned at the rear end. Depending on whether they are connected to the input terminal of the amplifier (not shown), the second and fifth switching elements SW2, SW5, or the third and fourth switch elements SW3, SW4 may be omitted.

[0077] Such a receiving circuit section 110'''' controls the first switch element SW1, The receiving electrode sections Rx0a and Rx0b can be electrically connected, as shown in Figure 2 of the touch sensor 10 It can be driven in self-sensing mode or stylus sensing mode. Furthermore, by controlling the second to fifth switch elements SW2, SW3, SW4, SW5, the pair of receiving electrode sections Rx0a , one of the receiving electrodes of Rx0b is located at the rear end of another electronic element (e.g., an amplifier). It is possible to control whether or not it is connected.

[0078] Figure 7 shows the receiving circuit section 110'' of the touch controller 15 shown in Figure 2, in yet another example. This is a diagram to explain ''''.

[0079] Referring to Figure 7, the receiving circuit section 110''''' consists of multiple switching sections SP0, SP1, SP2 ,SP3, ..., multiplexer M, and differential amplifier DA may be included.

[0080] Each switching unit SP0, SP1, SP2, SP3, ... is controlled by an external control signal, and each receiving electrode A pair of receiving electrode sections (Rx0a and Rx0b, ...) are electrically connected or disconnected from each other. For example. The pair of input terminals of the 0th switching unit SP0 are connected to the pair of receiving electrode units Rx0a and Rx0b of the 0th receiving electrode. It is electrically connected, and one output terminal is connected to one of the many input terminals of the multiplexer M. It is connected to the input terminal. The remaining switching units SP1, SP2, SP3, ... are connected in the same manner. It will be done.

[0081] Multiplexer M is paired with the output terminals of multiple switching units SP0, SP1, SP2, SP3, ... It includes a plurality of input terminals connected by a single link, and includes at least two output terminals. The two output terminals These are connected to the two input terminals of the differential amplifier (DA).

[0082] Such a receiving circuit section 110'''''' drives the display panel 20 shown in Figure 2. Display noise can be eliminated. Specifically, the touch sensor shown in Figure 2 The SA10 operates in pen sensing mode to detect the pen signal generated from the stylus. When this happens, multiple switching units SP0, SP1, SP2, SP3, ... are connected to a pair of receiving electrode units of each receiving electrode. Rx0a and Rx0b, Rx1a and Rx1b, Rx2a and Rx2b, Rx3a and Rx3b, ...) are electrically connected to each other. Multiplexer M receives input from multiple switching units SP0, SP1, SP2, SP3, ... Two signals from the signals SRx0, SRx1, SRx2, SRx3, ... are output to the differential amplifier DA, and the differential amplifier The DA can differentially amplify two signals selected by the multiplexer M and output them. The differentially amplified signal, as shown above, is affected by the display noise caused by the drive of the display panel 20. Because most of the noise has been removed, it is possible to prevent accidental touches and improve touch sensitivity. It can be improved.

[0083] Figures 8 to 17 are drawings illustrating various embodiments of the touch sensor 10 shown in Figure 2. be.

[0084] Figure 8 is a partial plan view of one embodiment of the touch sensor 10 shown in Figure 2, and Figure 9 is a partial plan view of Figure 8. Figure 10 is a plan view showing the touch sensors separated into layers, and Figure 8 shows multiple This is a diagram illustrating the electrical connection of the receiving electrodes.

[0085] Referring to Figures 8 to 10, the touch sensor according to one embodiment of the present invention is a display panel It may be placed on top of the flannel or inside the display panel.

[0086] A touch sensor according to one embodiment of the present invention includes a plurality of first electrodes and a plurality of second electrodes. Of the number of first electrodes and multiple second electrodes, the electrode to which the drive signal is applied becomes the drive electrode, and the remaining The electrodes may also act as receiving electrodes. In the following, multiple first electrodes can be multiple driving electrodes TX0, TX1, TX2. In TX3, ..., multiple second electrodes are multiple receiving electrodes RX0, RX1, RX2, RX3, RX4, ... I will explain it by doing so.

[0087] Multiple drive electrodes TX0, TX1, TX2, TX3, ... are the 0th drive electrode TX0, the 1st drive electrode TX1, the 2nd drive electrode It may include a dynamic electrode TX2 and a third drive electrode TX3. Here, a plurality of drive electrodes TX0, TX1, TX2, TX3,... correspond to the multiple drive electrodes Tx0, Tx1, Tx2,... shown in Figure 2.

[0088] Multiple receiving electrodes RX0, RX1, RX2, RX3, RX4, ... are defined as the 0th receiving electrode Rx0, the 1st receiving electrode RX1, It may include a second receiving electrode RX2, a third receiving electrode RX3, and a fourth receiving electrode RX4. Here, multiple receiving electrodes The signal electrodes RX0, RX1, RX2, RX3, RX4, ... are the multiple receiving electrodes RX0, RX1, RX2, R shown in Figure 2. Compatible with X3, RX4, etc.

[0089] Multiple drive electrodes TX0, TX1, TX2, TX3, ... are arranged along the second direction (or longitudinal direction). Each extends along a first direction (or lateral direction) perpendicular to the second direction. The signal electrodes RX0, RX1, RX2, RX3, RX4, ... may be arranged along the first direction. Here, Conversely, the multiple drive electrodes TX0, TX1, TX2, TX3, ... are aligned along the first direction (or lateral direction). The multiple receiving electrodes RX0, RX1, RX2, RX3, RX4, ... are arranged in the second direction (or vertical direction) They may be arranged along the direction.

[0090] Multiple drive electrodes TX0, TX1, TX2, TX3, ... and multiple receiving electrodes RX0, RX1, RX2, RX3, RX4, ...a predetermined capacitance may be formed between these two points. Such capacitance is It changes when touch input occurs at or near the relevant location. Therefore, multiple received power The change in capacitance is detected from the signals output from poles RX0, RX1, RX2, RX3, RX4, ... This allows for the detection of whether or not a touch was made and for touch input to be detected.

[0091] Each of the multiple drive electrodes TX0, TX1, TX2, TX3, ... has a rectangular pattern extending in the first direction. It has a bar or bar pattern shape and has multiple openings arranged along a first direction inside. It may have part O.

[0092] A single receiving electrode may be placed inside each opening O. The shape of each opening O is determined by the arrangement inside. It corresponds to the shape of one receiving electrode. For example, as shown in Figure 8, multiple openings O The remaining parts, excluding the openings located at the left and right ends, may have a diamond shape. The openings located at the side ends may have a triangular shape. Although not shown in the drawings, all The opening O may have a rhombus shape. Alternatively, multiple openings O may be polygonal, rectangular, They may have a variety of shapes, such as circular or elliptical.

[0093] Each receiving electrode RX0, RX1, RX2, RX3, RX4, ... corresponds to multiple receiving electrode patterns RX0a, RX0b, RX1 Includes a,RX1b,RX2a,RX2b,RX3a,RX3b,RX4a,RX4b and connection patterns P0,P1,P2,P3,P4 Hmm. Here, multiple receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b Some of the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, and RX4a among RX4a and RX4b are shown in Figure 2. This corresponds to some of the receiving electrodes Rx0a, Rx1a, Rx2a, Rx3a, ..., and the remaining receiving electrode pattern RX 0b, RX1b, RX2b, RX3b, RX4b are the remaining receiving electrodes Rx0b, Rx1b, Rx2b, Rx3b shown in Figure 2. It can handle...

[0094] As shown in Figure 9(a), there are multiple drive electrodes TX0, TX1, TX2, TX3, ... and multiple receiving electrodes The pole patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b, RX4a, RX4b are in the first layer (f They may be placed together in the first layer. Here, multiple drive electrodes TX0,TX placed in the first layer. 1, TX2, TX3, ... and multiple receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a RX3b, RX4a, and RX4b may be represented by a metal mesh, as shown in Figure 9(b). Multiple linked patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, P4b are in the second layer (sec The second layer may be placed in the first layer. The second layer is a different layer from the first layer in Figure 9(a), and the first layer is They are electrically insulated. Here, multiple connection patterns P0a, P0b, P1a, P1b, P2a, P2b, P3 a, P3b, P4a, P4b may be represented by a metal mesh. The first layer of Figure 9(a) is the same as in Figure 9( It may be placed on the second layer of (b), and vice versa.

[0095] The multiple receiving electrode patterns contained in each receiving electrode are divided into at least two groups. It is possible. Between the receiving electrode patterns of one group, the receiving within another group The electrode patterns are arranged alternately, one by one. The receiving electrode pattern of one group is connected to the other. Electrically isolated from the receiving electrode pattern within one group. Here, within one group The receiving electrode pattern is the first receiving electrode pattern, and the receiving electrode patterns in another group are This can be named the second receiving electrode pattern.

[0096] Multiple linked patterns contained in each receiving electrode are the first receiving electrode pattern within a single group. A first connection pattern electrically connects the two electrodes, and a second receiving electrode in another group electrically connects the two electrodes. This includes a second linking pattern that connects to the first one.

[0097] For example, the 0th receiving electrode Rx0 consists of multiple receiving electrode patterns RX0a, RX0b and multiple linked patterns P0 may be included. Multiple receiving electrode patterns RX0a and RX0b alternate one by one along the second direction. The first group of receiving electrode patterns RX0a and the second group of receiving electrode patterns RX0b are arranged in this manner. It may include: the first group receiving electrode pattern RX0a and the second group receiving electrode pattern RX 0b may be electrically isolated from each other. The 0th connected pattern P0 is the receiving electrode pattern of the 1st group The first connecting pattern P0a and the second group receiving electrode pattern RX0 electrically connect turn RX0a. It may include a second connection pattern P0b that electrically connects b.

[0098] The first receiving electrode RX1 includes multiple receiving electrode patterns RX1a, RX1b and multiple connecting patterns P1. That's fine. Multiple receiving electrode patterns RX1a and RX1b are arranged alternately one by one along the second direction. Includes a first group receiving electrode pattern RX1a and a second group receiving electrode pattern RX1b Good. The receiving electrode pattern RX1a of the first group and the receiving electrode pattern RX1b of the second group are mutual. It can be electrically separated. The first coupling pattern P1 is the first group of receiving electrode patterns A first connection pattern P1a electrically connects the RX1a, and the second group of receiving electrode patterns RX1 It may include a second connection pattern P1b that electrically connects b.

[0099] The second receiving electrode RX2 includes multiple receiving electrode patterns RX2a, RX2b and multiple connecting patterns P2. That's fine. Multiple receiving electrode patterns RX2a and RX2b are arranged alternately one by one along the second direction. Includes a first group receiving electrode pattern RX2a and a second group receiving electrode pattern RX2b Good. The receiving electrode pattern RX2a of the first group and the receiving electrode pattern RX2b of the second group are mutual. It can be electrically separated. The second coupling pattern P2 is the receiving electrode pattern of the first group A first connecting pattern P2a electrically connects the RX2a, and the second group of receiving electrode patterns RX2 It may include a second connection pattern P2b that electrically connects b.

[0100] The third receiving electrode RX3 includes multiple receiving electrode patterns RX3a, RX3b and multiple connecting patterns P3. That's fine. Multiple receiving electrode patterns RX3a and RX3b are arranged alternately one by one along the second direction. Includes a first group receiving electrode pattern RX3a and a second group receiving electrode pattern RX3b Good. The receiving electrode pattern RX3a of the first group and the receiving electrode pattern RX3b of the second group are mutual. It can be electrically separated. The third coupling pattern P3 is the receiving electrode pattern of the first group A first connecting pattern P3a electrically connects the RX3a, and the second group of receiving electrode patterns RX3 It may include a second connection pattern P3b that electrically connects b.

[0101] The fourth receiving electrode RX4 includes multiple receiving electrode patterns RX4a, RX4b and multiple connecting patterns P4. That's fine. Multiple receiving electrode patterns RX4a and RX4b are arranged alternately one by one along the second direction. Includes a first group receiving electrode pattern RX4a and a second group receiving electrode pattern RX4b Good. The receiving electrode pattern RX4a of the first group and the receiving electrode pattern RX4b of the second group are mutual. It can be electrically separated. The fourth coupling pattern P4 is the receiving electrode pattern of the first group A first connecting pattern P4a electrically connects the RX4a, and the second group of receiving electrode patterns RX4 It may include a second connection pattern P4b that electrically connects b.

[0102] Multiple receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b, RX4a, RX 4b is positioned inside the multiple openings O of the multiple drive electrodes TX0, TX1, TX2, TX3, ... The shape of each receiving electrode pattern is located inside a single opening O. The shape corresponds to the shape of the corresponding opening.

[0103] In any receiving electrode RX1, the receiving electrode patterns within the first group, which are arranged adjacent to each other Between the receiving electrode pattern RX1a and the receiving electrode pattern RX1b in the second group, the receiving electrode in the first group A portion of the drive electrode TX0 immediately adjacent to pattern RX1a, and the receiving electrode pattern within the second group A portion of the drive electrode TX1, which is immediately adjacent to the RX1b, is positioned together with it.

[0104] Any drive electrode TX0 corresponds to one group of receiving electrode patterns RX0a, RX1a, RX2a, RX3a, R Located immediately adjacent to X4a, and connected to the receiving electrode patterns RX0b, RX1b, and RX2b of the other groups. Other drive electrodes TX1 located immediately adjacent to RX3b and RX4b are any of the drive electrodes TX0 This separates the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, and RX4a of the aforementioned group. They are arranged in such a way.

[0105] Each of the linked patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, P4b is the second It may have a bar pattern shape extending along the direction, and at least one conductive via v Includes. Conductive vias v may be placed at each end of the connecting pattern.

[0106] In the 0th receiving electrode Rx0, each of the first connected patterns P0a is a receiving electrode of the first group. Two adjacent receiving electrode patterns RX0a of pattern RX0a are connected via conductive via v. A second electrically connected receiving electrode pattern RX0a is positioned between the two adjacent receiving electrode patterns RX0a. The second set is positioned to overlap the receiving electrode pattern RX0b of the group. Each of the connection patterns P0b is adjacent to one another among the receiving electrode patterns RX0b of the second group. Two receiving electrode patterns RX0b are electrically connected via conductive via v, and the adjacent ones The first group of receiving electrode patterns RX0a is positioned between the two receiving electrode patterns RX0b. They are positioned so as to overlap below. The remaining receiving electrodes RX1, RX2, RX3, RX4 The connection patterns P1a, P2a, P3a, P4a and the second connection pattern P1b, P2b, P3b, P4b were also explained earlier. They are arranged in the same manner as shown above.

[0107] In the following, at least one of the multiple drive electrodes Tx0, Tx1, Tx2, Tx3 is used for driving The operation when a dynamic signal is applied will be explained in detail. For the sake of explanation, the operation of the first receiving electrode RX1 will be described. The operation of the sensing unit 11 in Figure 2 will be explained in detail.

[0108] If a drive signal is applied sequentially or simultaneously to multiple drive electrodes Tx0, Tx1, Tx2, Tx3, the first series Two sensing signals are output via connection pattern P1. The first signal is connected to the first connection pattern P1a. The first signal is output via the second connection pattern P1b. Yes. Therefore, each receiving electrode RX0, RX1, RX2, RX3, RX4 has two channels for the first and second signals. The signal is output. The first and second signals are output simultaneously, and the output first and second signals are shown in Figure The output may be sent to the sensing unit 11 of unit 2.

[0109] The drive electrodes TX0, TX1, TX2, TX3, ... to which the drive signal is applied, the first signal and the second signal One of the offshoots may be the active channel signal (or the active receive signal ARX). The remaining one can be a dummy channel signal (or a dummy receive signal DRX). Specifically, the first group of receiving electrode patterns RX1a are driven by the driving electrodes TX0 and / or TX2 where the receiving electrode pattern RX1a is located. When a motion signal is applied, the first signal output via the first coupling pattern P1a becomes active. The second signal, which becomes a channel signal and is output via the second linked pattern P1b, is a dummy channel signal. This becomes the number. On the other hand, the driving electrode TX1 or / and the receiving electrode pattern RX1b of the second group is arranged thereon. When a drive signal is applied to TX3, the second signal output via the second coupling pattern P1b becomes active. The first signal, which becomes a dual channel signal and is output via the first linked pattern P1a, is a dummy channel signal. This becomes a channel signal.

[0110] For example, as shown in Figure 8, the objects (dotted lines) represent the first drive electrode TX1 and the first receiver electrode. Assuming that the first drive electrode TX1 is in proximity to or in contact with the intersection point of RX1, a drive signal is received at the first drive electrode TX1. When applied, the receiving electrode pattern RX1b belonging to the second group of the first receiving electrode RX1 and the first driving power The capacitance (or mutual active capacitance) formed between pole TX1 and the other pole changes. The second signal, which contains information about the changing capacitance, is the active channel signal. It is output via the second linked pattern P1b.

[0111] On the other hand, between the receiving electrode patterns RX1a that belonged to the first group of the first receiving electrode RX1 Capacitance (or dummy capacitance) also changes. Capacitance change information The first signal, which includes the above, is output as a dummy channel signal via the first concatenated pattern P1a. ru.

[0112] The sensing unit 11 shown in Figure 2, in the second signal output via the second linking pattern P1b, By subtracting the first signal output via the first coupling pattern P1a, the second group is determined. The cathode input to the receiving electrode pattern RX1b and the receiving electrode pattern RX1a, which belonged to the first group. The drive transmission noise signal, LGM noise signal, and display noise signal It can be offset in whole or in large part.

[0113] Figure 11 is a plan view of some other embodiments of the touch sensor 10 shown in Figure 2, and Figure 12 is Figure 11 is a plan view showing the touch sensor separated into layers, and Figure 13 is a plan view showing the touch sensor separated into layers, as shown in Figure 11. This is a diagram illustrating the electrical connection of multiple receiving electrodes.

[0114] A touch sensor according to another embodiment of the present invention, shown in Figures 11 to 13, is shown in Figures 8 to 10. Compared to a touch sensor according to one embodiment of the present invention, the multiple receiving electrodes RX0', RX1', There are differences between RX2', RX3', and RX4'. In particular, each receiving electrode RX0', RX1', RX2', RX3', and RX4'. The structures of the multiple receiving electrode patterns RX1a' included in are different. Below, the multiple receiving electrode patterns I will now explain the structure of Turn RX1a' in detail, and the remaining components will be described as previously mentioned. .

[0115] Multiple receiving electrode patterns RX1 included in each receiving electrode RX0', RX1', RX2', RX3', RX4' a' has an opening O' inside and includes a dummy pattern DX1a positioned inside the opening O'. Here, the dummy pattern DX1a may have a shape corresponding to the opening O'.

[0116] Dummy pattern DX1a is linked pattern P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a , is not electrically connected to P4b. The dummy pattern DX1a is electrically floating. Maintain the state.

[0117] The operation of the touch sensor according to another embodiment of the present invention shown in Figures 11 to 13 is shown in Figures 8 to 10. This is identical to the operation of the touch sensor according to one embodiment of the present invention shown in Figure. A touch input device including a touch sensor according to another embodiment of the present invention shown in Figures 11 to 13 is also, Various types of noise can occur during touch sensing, such as cathode retransmission The advantage is that it can remove noise signals, display noise, and LGM noise, etc. be.

[0118] Figure 14 is a plan view of a part of yet another embodiment of the touch sensor 10 shown in Figure 2. Figure 15 is a plan view showing the touch sensor shown in Figure 14 separated into layers.

[0119] A touch sensor according to yet another embodiment of the present invention, shown in Figures 14-15, is shown in Figures 8-10. Compared to the touch sensor according to one embodiment of the present invention shown, the multiple receiving electrodes RX0'',R There are differences in X1, RX2, RX3, and RX4. In particular, in each receiving electrode RX0, RX1, RX2, and RX3. The arrangement structure and form of the multiple linked patterns P0', P1', P2', P3', P4' contained in RX4'' That is incorrect. Below, we will explain in detail the arrangement structure and form of each linking pattern P0', P1', P2', P3', and P4'. Therefore, the remaining components will be replaced with the content mentioned above.

[0120] Each linked pattern P0', P1', P2', P3', P4' corresponds to the first linked pattern P0a', P1a', P2a', Includes P3a', P4a' and the second linked pattern P0b', P1b', P2b', P3b', P4b'.

[0121] Each of the first linked patterns P0a', P1a', P2a', P3a', P4a' is a combination of two received powers from the first group. The pole patterns RX0a, RX1a, RX2a, RX3a, and RX4a are electrically connected, but the two receiving power The second group of receiving electrode patterns, RX0b, RX1b, RX2b, RX3b, R, are positioned between the pole patterns. They are arranged so as not to overlap with X4b. For example, each first connected pattern P0a', P1a', P2a', P At least a portion of 3a',P4a' is the receiving electrode pattern RX0b,RX1b,RX of the second group. The receiving electrode patterns of the second group, RX0b, RX1b, R, are arranged so as not to overlap with 2b, RX3b, and RX4b. X2b, RX3b, RX4b and the receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b of the second group It may be placed between the drive electrodes Tx0, Tx1, Tx2, and Tx3 which are placed immediately adjacent to each other. On the other hand, the remaining The portion indicated may be arranged so as to overlap with the drive electrodes Tx0, Tx1, Tx2, and Tx3.

[0122] Each of the second linked patterns P0b', P1b', P2b', P3b', P4b' is a second group of two received power Although the pole patterns RX0b, RX1b, RX2b, RX3b, and RX4b are electrically connected, the two receiving power The first group of receiving electrode patterns RX0a, RX1a, RX2a, RX3a, R are positioned between the pole patterns. They are arranged so as not to overlap with X4a. For example, each second connected pattern P0b', P1b', P2b', P At least a portion of 3b',P4b' is the receiving electrode pattern RX0a,RX1a,RX of the first group. so as not to overlap with 2a, RX3a, and RX4a, the reception electrode patterns RX0a, RX1a, R of the first group X2a, RX3a, RX4a may be disposed between the driving electrodes Tx0, Tx1, Tx2, Tx3 disposed immediately adjacent to the reception electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a of the first group . On the other hand, the remaining portion may be disposed so as to overlap with the driving electrodes Tx0, Tx1, Tx2, and Tx3.

[0123] According to still another embodiment of the present invention, such a touch sensor is shown in FIGS. 8 to 10 Compared with the touch sensor according to an embodiment of the present invention, the first connection pattern and the second group of receiving electrode patterns, or between the second connection pattern and the first group of receiving electrode patterns, the ca pacitance value can be reduced.

[0124] On the other hand, although not shown in separate drawings, the dummy pattern DX1a shown in FIGS. 12 to 13 can be applied to the present invention may also be applied to a touch sensor according to still another embodiment of the present invention.

[0125] FIG. 16 is a plan view of a part of still another embodiment of the touch sensor 10 shown in FIG. 2, FIG. 17 is a layered separated plan view of the touch sensor shown in FIG. 16.

[0126] The touch sensor according to still another embodiment of the present invention shown in FIGS. 16 to 17 is the same as that shown in FIGS. 8 to 10 Compared with the touch sensor according to one embodiment of the present invention shown in, the plurality of receiving electrodes RX0'' ', RX1''', RX2''', RX3''' are different. In particular, each of the receiving electrodes RX0''', RX1' '', RX2''', RX3''' includes a plurality of receiving electrode patterns RX0a-1, RX0a-2, RX0b-1 ,RX0b-2,RX1a-1,RX1a-2,RX1b-1,RX1b-2,RX2a-1,RX2a-2,RX2b-1,RX2b-2,RX3a-1 Structure of RX3a-2, RX3b-1, RX3b-2 and multiple connection patterns P0, P1, P2, P3'' The arrangement and configuration differ. Below, the receiving electrode patterns RX0a-1, RX0a-2, RX0b-1, RX0b-2, RX1a-1,RX1a-2,RX1b-1,RX1b-2,RX2a-1,RX2a-2,RX2b-1,RX2b-2,RX3a-1,RX3a-2, Detailed information on the structure and arrangement of RX3b-1, RX3b-2 and connection patterns P0, P1, P2, P3''. I will explain in detail, and the remaining structure will be replaced by the content mentioned above.

[0127] Multiple receiving electrode patterns RX for each receiving electrode RX0''',RX1''',RX2''',RX3''' 0a-1,RX0a-2,RX0b-1,RX0b-2,RX1a-1,RX1a-2,RX1b-1,RX1b-2,RX2a-1,RX2a-2,RX 2b-1, RX2b-2, RX3a-1, RX3a-2, RX3b-1, RX3b-2 are arranged alternately one by one along the second direction. The first group of receiving electrode patterns are arranged as follows: RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2 a-2, RX3a-1, RX3a-2 and the receiving electrode patterns of the second group: RX0b-1, RX0b-2, RX1b-1, RX1b-2 Includes RX2b-1, RX2b-2, RX3b-1, RX3b-2. Receiver electrode patterns of the first group: RX0a-1, RX0 a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, RX3a-2 and the second group of receiving electrode patterns RX0b-1, RX0b-2, RX1b-1, RX1b-2, RX2b-1, RX2b-2, RX3b-1, and RX3b-2 are electrically connected to each other. It can be separated into:

[0128] Receiver electrode patterns for the first group: RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, R X3a-1 and RX3a-2 respectively have the first receiving electrode patterns RX0a-1, RX1a-1, RX2a-1, and RX3a-1. Includes 2 receiving electrode patterns RX0a-2, RX1a-2, RX2a-2, RX3a-2. First receiving electrode pattern RX0a-1 RX1a-1, RX2a-1, RX3a-1 and the second receiving electrode patterns RX0a-2, RX1a-2, RX2a-2, RX3a-2 are, The drive electrodes TX0 and TX2 are respectively positioned within two openings O that are adjacent to each other in the first direction. The openings located at both ends of the multiple openings O of each drive electrode Tx0, Tx1, Tx2, Tx3. Within the section, one first or second receiving electrode pattern is arranged, and within the remaining opening, multiple The first receiving electrode of any one of the receiving electrodes RX0''',RX1''',RX2''',RX3''' The second receiving electrode pattern of the group's receiving electrode pattern and the first group of another receiving electrode. The first receiving electrode patterns of the receiving electrode pattern of the P are arranged together, but separated from each other. It will be placed.

[0129] Each linked pattern P0'', P1'', P2'', P3'', corresponds to the first group's receiving electrode pattern R Connect X0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, and RX3a-2 electrically. The first linked pattern P0a'', P1a'', P2a'', P3a'', and the second group of receiving electrode patterns Connect RX0b-1, RX0b-2, RX1b-1, RX1b-2, RX2b-1, RX2b-2, RX3b-1, and RX3b-2 electrically. includes the second connection patterns P0b'', P1b'', P2b'', P3b''.

[0130] Each of the first connection patterns P0a'', P1a'', P2a'', P3a'' and the second connection pattern P0 b'', P1b'', P2b'', P3b'' are configured and arranged to connect two mutually adjacent receiving electrode pa tterns for each group at the shortest possible distance. For example, each of the first connecti on patterns P0a'', P1a'', P2a'', P3a'' and the second connection patterns P0b'', P1b'', P 2b'', P3b'' may be configured such that one end thereof is connected to one side of a lower end of any one of two mutually adjacent receiving electrode patterns in any one group, and the other end thereof is connected to one side of an upper end of the other remaining receiving electrode pattern. 2b'', P3b'' may be configured such that one end thereof is connected to one side of the lower end of any one of two mutually adjacent receiving electrode patterns in any one group, and the other end is connected to one side of the upper end of the other remaining receiving electrode pattern. the other end is connected to one side of the upper end of the other remaining receiving electrode pattern. Except for the one end and the other end, the other end may be connected to one side of the upper end of the other remaining receiving electrode pattern. The remaining portion excluding the one end and the other end has a shape extending along the second direction, and the receiving electrode of another group disposed between the one receiving electrode patter n and the other remaining receiving electrode pattern is arranged such that the largest possible cross-sectional area overlaps the opening O of the driving electrode without overlapping with the receiving electrode n and the other remaining receiving electrode pattern without overlapping the receiving electrode pattern of another group disposed therebetween, such that as large a cross-sectional area as possible overlaps the opening O of the drive electrode pattern without overlapping, such that the widest possible cross-sectional area overlaps the opening O of the driving electrode .

[0131] Further, each of the first connection patterns P0a'', P1a'', P2a'', P3a'' is configured to electrically connect the first receiving electrode pattern and the second receiving electrode pattern of the receiving electrode patterns of the first group electrically connects the first receiving electrode pattern and the second receiving electrode pattern of the receiving electrode patterns of the first group further includes a receiving connection pattern, and each of the second connection patterns P0b'', P1b'', P2b'' , P3b'' further includes a receiving connection pattern that electrically connects the first receiving electrode pattern and the second receiving electrode pattern of the receiving electrode patterns of the second group. further includes a receiving connection pattern that electrically connects the first receiving electrode pattern and the second receiving electrode pattern of the receiving electrode patterns of the second group.

[0132] Touch sensors according to yet another embodiment of the present invention are shown in Figures 8 to 10. Compared to a touch sensor according to one embodiment of the present invention, the first linked pattern and the second group of receiving The gap between the signal electrode patterns, or between the second connecting pattern and the first group of receiving electrode patterns. The advantage is that the capacitance value can be reduced, and the resistance value of each connected pattern can also be reduced. There is.

[0133] Figure 18 is a plan view of a part of yet another embodiment of the touch sensor 10 shown in Figure 2.

[0134] The touch sensor according to yet another embodiment of the present invention shown in Figure 18 comprises multiple drive electrodes Tx Includes 0 and multiple receiving electrodes Rx0.

[0135] Each drive electrode Tx0 includes a diamond-shaped pattern arranged in one direction. A connecting pattern that connects two adjacent pattern sections among the aforementioned pattern sections. Includes the section.

[0136] Each receiving electrode Rx0 has a first electrode portion Rx0a and a second electrode portion arranged in a direction different from the aforementioned one direction. It includes an electrode portion Rx0b. The first electrode portion Rx0a and the second electrode portion Rx0b may have a triangular shape. They are adjacent to each other. The first electrode portion Rx0a and the second electrode portion Rx0b, which are arranged in this manner, are diamond-shaped overall. It may have a form.

[0137] The first electrode portion Rx0a is positioned to be even more adjacent to the drive electrode Tx0 relative to the second electrode portion Rx0b. The second electrode portion Rx0b is positioned further adjacent to the other drive electrodes relative to the first electrode portion Rx0a. They are arranged in this manner.

[0138] The first electrode portion Rx0a may be electrically connected via multiple conductive traces. Second electrode portion Rx0b may also be electrically connected via multiple conductive traces.

[0139] Figure 19 is a schematic diagram of a touch input device according to another embodiment of the present invention.

[0140] Referring to Figure 19, another embodiment of the present invention, the touch input device 1', includes a touch sensor 1 0', display panel 20, touch controller 15 for controlling touch sensor 10, and may include a display controller 25 for controlling the display panel 20. Here, the remaining components, excluding the touch sensor 10', are the touch input device 1 shown in Figure 2 and Since they are identical, the following explanation will focus on the touch sensor 10'.

[0141] The touch sensor 10' has multiple drive electrodes Tx0, Tx1, Tx2, ... and multiple receiving electrodes Rx0, Rx1, R Includes x2, Rx3, ...

[0142] Multiple driving electrodes Tx0, Tx1, Tx2, ... and multiple receiving electrodes Rx0, Rx1, Rx2, Rx3, ... They may be arranged so as to intersect each other. Multiple drive electrodes Tx0, Tx1, Tx2, ... and multiple Between the receiving electrodes Rx0, Rx1, Rx2, Rx3, ..., and especially at their intersections, there is a predetermined mutual capacitance. It may be formed by an object that is in contact with or close to the surface of the touch input device. The electrical capacity can be changed.

[0143] Each driving electrode Tx0, Tx1, Tx2, ... extends in the first axial direction, and each receiving electrode Rx0, Rx1, Rx2, Rx3, ... It can extend in a second axis direction which is different from the first axis direction. Here, the second axis direction is different from the first axis direction. It can be in a vertical direction.

[0144] Each of the multiple drive electrodes TX0, TX1, TX2, TX3, ... consists of a pair of drive electrode sections (Tx0a and Tx0b Includes Tx1a and Tx1b, Tx2a and Tx2b, Tx3a and Tx3b, ...). A pair of drive electrode sections (Tx0a and Tx0b, Tx1a and Tx1b, Tx2a and Tx2b, Tx3a and Tx3b, ...) are the first drive electrode sections Tx0a, Tx1a, Tx2a, Tx3a , ... and second drive electrode sections Tx0b, Tx1b, Tx2b, Tx3b, ... are included.

[0145] Among the multiple drive electrodes TX0, TX1, TX2, TX3, ..., the first drive electrode section Tx0a, Tx1a, Tx2a, Tx3a ... refers to some of the receiving electrodes Rx0, Rx1, Rx2, ... among multiple receiving electrodes Rx0, Rx2, Rx4, Rx6 , ... may be arranged so as to form a mutual capacitance cm, and multiple drive electrodes TX0, TX1, TX 2,TX3,... the second drive electrode section Tx0b, Tx1b, Tx2b, Tx3b,... consists of multiple receiving electrodes Rx0, Rx Mutual capacitance is formed with the remaining receiving electrodes Rx1, Rx3, Rx5, Rx7, ... from 1, Rx2, ... They may be arranged in this way.

[0146] Among the multiple drive electrodes TX0, TX1, TX2, TX3, ..., the first drive electrode section Tx0a, Tx1a, Tx2a, Tx3a ... refers to some of the receiving electrodes Rx0, Rx1, Rx2, ... among multiple receiving electrodes Rx0, Rx2, Rx4, Rx6 They are often placed right next to each other, and the remaining receiving electrodes Rx1, Rx3, Rx5, Rx7, ... They may be arranged so as to be separated by a predetermined distance, not directly adjacent to each other. Here, the first drive electrode section Tx0a Between Tx1a, Tx2a, Tx3a, ... and the remaining receiving electrodes Rx1, Rx3, Rx5, Rx7, ... there is at least One or more other electrodes may be placed. The other electrodes are some of the receiving electrodes Rx0, Rx2, Rx4, It can be Rx6,...

[0147] Of the multiple drive electrodes Tx0, Tx1, Tx2, ... the second drive electrode parts Tx0b, Tx1b, Tx2b, Tx3b, ... are Of the multiple receiving electrodes Rx0, Rx1, Rx2, ..., the remaining receiving electrodes are Rx1, Rx3, Rx5, Rx7, ... They may be arranged adjacent to each other, and some of the receiving electrodes Rx0, Rx2, Rx4, Rx6, ... may be right next to each other. They may be arranged so as to be separated by a predetermined distance. Here, the second drive electrode parts Tx0b, Tx1b, T Between x2b, Tx3b, ... and some of the receiving electrodes Rx0, Rx2, Rx4, Rx6, ... there is at least one Other electrodes may be placed. These other electrodes are placed on the remaining receiving electrodes Rx1, Rx3, Rx5, Rx7, ... That's fine.

[0148] A predetermined drive signal may be input to each drive electrode TX0, TX1, TX2, TX3, ... The first drive electrode portions Tx0a, Tx1a, Tx2a, Tx3a, ... of the dynamic electrodes TX0, TX1, TX2, TX3, ... have first drive A second drive signal may be applied to the second drive electrode sections Tx0b, Tx1b, Tx2b, Tx3b, ... The first and second drive signals may be applied simultaneously, or they may be applied at different times. The second drive signal may be the first drive signal with only the phase shifted by 180 degrees.

[0149] The first drive signal and the second drive signal simultaneously activate the first drive electrode portion Tx0a of any drive electrode Tx0 and the second drive When applied to electrode Tx0b, a predetermined signal is received from any receiving electrode Rx0 that intersects with the driving electrode Tx0. The signal is output. The signal includes the first capacitance between the first drive electrode Tx0a and the receiving electrode Rx0. Information and capacitance based on second capacitance information between the second drive electrode Tx0b and the receiving electrode Rx0 The information is included. The capacitance information is obtained by subtracting the second capacitance information from the first capacitance information. It's fine if it's just that information.

[0150] The touch controller 15 receives signals output from multiple receiving electrodes Rx0, Rx1, Rx2, Rx3, ... Based on this, it is possible to determine whether or not an object is being touched and / or the touch location.

[0151] According to the touch input device 1' shown in Figure 19, the display is driven by the touch sensor 10'. This prevents flicker from occurring in the Ray Panel 20 and shortens the operating time. Yes, it is possible. Here, the flicker is a drive signal applied to the drive electrode of the touch sensor 10'. This electrically affects the display panel, causing a portion of the display screen to blink rapidly. This is a phenomenon of vibration or oscillation. Refer to Figures 20 and 21 for a detailed explanation.

[0152] Figure 20(a) shows multi-drive operation for each of the four drive electrodes in the touch input device shown in Figure 2. The graph shows how the process is carried out, and Figure 20(b) shows the multi-drive in Figure 20(a). The drive signal applied to the four drive electrodes Tx0, Tx1, Tx2, Tx3 that are driven simultaneously during operation (or This is an example of a drive code.

[0153] As shown in Figure 20(a), of the 20 drive electrodes Tx0 to Tx19, 4 drive electrodes Tx0, Tx 1, Tx2, Tx3 are given the drive signal shown in Figure 20(b) during an arbitrary time interval (0~T1) When a signal is applied simultaneously, the total sum of the drive signals (Drive sum) becomes "2". In this case, if the drive voltage applied to each drive electrode is, for example, 10[V], then 2 * 10[V] corresponds to 20 The overall drive voltage [V] affects the display panel, causing flicker on the display screen. - may occur. Furthermore, the more the number of simultaneously driven electrodes increases beyond four, the greater the risk. The total sum of the drive signals will be even larger, so the total drive voltage will be even larger. As a result, the display screen may end up flickering badly.

[0154] On the other hand, in the touch input device shown in Figure 19, the touch controller 15 has multiple drive electrodes Tx Apply a drive signal simultaneously to four or more of the drive electrodes 0, Tx1, Tx2, ..., or to all drive electrodes. Even when controlled in this way, the flickering problem in the display panel mentioned above does not occur. There is a point. Refer to Figure 21 for a detailed explanation.

[0155] Figure 21(a) shows the touch input device shown in Figure 19, where the entire drive electrode is multi-drive The graph shows the movement, and Figure 21(b) shows the multi-drive operation in Figure 21(a). The drive signal applied to all drive electrodes Tx0, Tx1, Tx2, Tx3, ... which are driven simultaneously (or, This is an example of a drive code.

[0156] As shown in Figure 21(a), all the drive electrodes Tx0, Tx1, Tx2, ... of the touch sensor 10' are... In the case where the drive signals shown in Figure 21(b) are simultaneously applied during a predetermined time interval (0 to T1) In total, the drive sum is always "0". This is because some of the drive electrodes Tx0a The drive signals applied simultaneously to Tx1a, Tx2a, Tx3a, ... and the remaining drive electrodes Tx0b, Tx1b, Tx The drive signals applied simultaneously to 2b, Tx3b, ... have the same magnitude, but only their phase differs by 180°. This is due to a degree inversion. In this way, the total sum of the drive signals (Drive sum) becomes 0. Therefore, it does not affect the display panel in any way. It has the advantage of not causing flicker on the display screen during operation.

[0157] Furthermore, as shown in Figure 21(a), the touch input device shown in Figure 19 is a touch controller. The torola 15 drives all or four or more of the multiple drive electrodes Tx0, Tx1, Tx2, ... simultaneously. Therefore, the mutual drive time can be reduced to 1 / 5 compared to the graph in Figure 20(a). This can also reduce the turn-on time of the analog front end (AFE). This can reduce the power consumption of touch input devices.

[0158] Furthermore, when the touch input device 1' is in the LGM state, noise caused by LGM occurs. It is also possible to remove the signal.

[0159] Figures 22(a) and (b) show a drive circuit according to an example of the touch controller 15 shown in Figure 19. This is a drawing illustrating part 130'.

[0160] Referring to Figure 22(a), the drive circuit section 130' consists of a pair of drive electrode sections Tx0a for each drive electrode Tx0. Includes a switch element SW for electrically short-circuiting or opening Tx0b. Control unit (not shown) The switch element SW is controlled by this, but when the switch element SW is closed, each drive electrode Tx The pair of drive electrode parts Tx0a and Tx0b of 0 are electrically connected to each other. On the other hand, not shown in the drawing However, a switch element may also be placed between the pair of drive electrode portions of other drive electrodes.

[0161] In this drive circuit section 130', the pair of drive electrodes are controlled by the switch element SW. Sections Tx0a and Tx0b can be electrically connected. Such a control method is shown in Figure 19. The touch sensor 10' is driven in self-sensing mode, and the pen signals from the stylus are transmitted. This can be used to activate the stylus sensing mode for detecting numbers. .

[0162] Referring to Figure 22(b), the drive circuit section 130'' consists of multiple switch elements SW1, SW2, SW3, S Includes W4 and SW5.

[0163] The first switch element SW1 performs the same role as the switch element SW shown in Figure 22(a). The first switch element SW1 is connected between a pair of drive electrode sections Tx0a and Tx0b. The control element SW1 may be short-circuited or open-circuited by the control unit (not shown).

[0164] The second to fifth switch elements SW2, SW3, SW4, SW5 each have a pair of drive electrode portions Tx0a It is possible to control which of the following drive electrode sections, Tx0b, is selected.

[0165] The second switch element SW2 is connected to one end of the first switch element SW1, and the third switch element SW3 is It may be connected to the other end of the first switch element SW1.

[0166] The fourth switch element SW4 is connected between the output terminal of the second switch element SW2 and AC ground, and the fifth Switch element SW5 may be connected between the output terminal of the third switch element SW3 and AC ground.

[0167] On the other hand, depending on which of the pair of drive electrode sections (Tx0a, Tx0b) is selected... Therefore, the second and fifth switch elements SW2, SW5, or the third and fourth switch elements SW3, SW4 are omitted. You may do so.

[0168] Such a drive circuit section 130'' controls the first switch element SW1, thereby controlling a pair of drive power The poles Tx0a and Tx0b can be electrically connected, and the touch sensor 10' shown in Figure 19 can be set It can be driven in stylus sensing mode or stylus sensing mode. By controlling the second to fifth switch elements SW2, SW3, SW4, SW5, a pair of drive electrode sections Tx0a, Tx It is possible to control which of the 0b drive electrode sections is selected and connected to other electronic elements. Cut.

[0169] Figure 23 shows the drive circuit section 130'''' of the touch controller 15 shown in Figure 19, in another example. This is a diagram for explanatory purposes.

[0170] Referring to Figure 23, the drive circuit section 130'''' is such that the touch sensor 10' is self-sensing When driven by a drive or in pen sensing mode, multiple drive power The poles Tx0, Tx1, Tx2, ... can perform the function of outputting a predetermined signal.

[0171] Such a drive circuit section 130''' includes multiple switching sections SP0, SP1, SP2, SP3, ... It may include a multiplexer M and a differential amplifier DA.

[0172] Each switching unit SP0 electrically connects a pair of drive electrode units Tx0a and Tx0b of each drive electrode to each other. Connect or electrically disconnect. The pair of input terminals of each signal processor SP0 are connected to the pair of drive terminals. It is electrically connected to the electrode sections Tx0a and Tx0b, and one output terminal is connected to the multiple inputs of the multiplexer M. It is connected to one of the input terminals at the end. The remaining switching units SP1, SP2, SP3,… They are connected in the same way.

[0173] Multiplexer M has a one-to-one correspondence between the output terminals of multiple switching units SP0, SP1, SP2, SP3, ... It includes multiple input terminals connected to it, and includes at least two output terminals. The two output terminals are These are connected to the two input terminals of the differential amplifier (DA).

[0174] Such a drive circuit section 130'' is used to drive the display panel 20 shown in Figure 19. Display noise can be eliminated. Specifically, the touch sensor shown in Figure 19 The 10' is driven in pen sensing mode to detect the pen signal generated from the stylus. At that time, multiple switching units SP0, SP1, SP2, SP3, ... are connected to a pair of drive electrode units of each drive electrode ( Tx0a and Tx0b, Tx1a and Tx1b, Tx2a and Tx2b, Tx3a and Tx3b, ... are electrically connected to each other. The Lutiplexer M receives multiple signals STx from multiple signal processors SP0, SP1, SP2, SP3, ... Two signals from 0, STx1, STx2, STx3, ... are output to the differential amplifier DA, and the differential amplifier DA is The Luciplexer M can differentially amplify two selected signals and output them in this way. Furthermore, the differentially amplified signal contains display noise caused by the driving of the display panel 20. Because almost all of it has been removed, it prevents accidental touches and improves touch sensitivity. It can be made to happen.

[0175] Figure 24 shows the drive circuit section 130' of the touch controller 15 shown in Figure 19, in yet another example. This is a diagram to explain ''''.

[0176] Referring to Figure 24, the drive circuit section 130'''' includes a drive driver D and a switch element SW. That's fine. The drive driver D amplifies the drive signal input to the input terminal and outputs it. The output terminal of driver D is connected to the first drive electrode section Tx0a of each drive electrode.

[0177] The switch element SW has one end connected to the output terminal of the drive driver D, and the other end is connected to each drive electrode. It is connected to the second drive electrode section Tx0b. The switch element SW is closed by the touch controller 15. It can be closed or opened.

[0178] Such a drive circuit section 130'''' is a self-sensing touch sensor 10' shown in Figure 19. It can be driven in single mode or in pen-driven mode to power a stylus. It may be used in that case.

[0179] On the other hand, although not shown in the separate diagram, the drive circuit section uses a multiplexer (MUX). They can also be driven together as a single drive driver. In this case, the drive driver is An inverter-type logic circuit is also acceptable, but an analog It may also be in the form of a buffer using an analog amplifier. .

[0180] Figure 25 shows the drive circuit section 130' of the touch controller 15 shown in Figure 19, in yet another example. This is a diagram to explain ''''.

[0181] The drive circuit section 130'''''' includes a drive driver D, a plurality of switch elements SW1, SW2, SW3 and Includes a receiving analog front-end Rx AFE.

[0182] The drive driver D amplifies the drive signal input to the input terminal and outputs it. The output terminal is connected to the first drive electrode portion Tx0a of each drive electrode.

[0183] The first switching element SW1 has one end connected to the output terminal of the drive driver D, and the other end is connected to each drive power It is connected to the second drive electrode section Tx0b of the pole.

[0184] The first switch element SW1 is opened or closed by the touch controller 15. It is possible.

[0185] The second switch element SW2 is connected between the drive driver D and the first drive electrode Tx0a. When turned on, the drive driver D and the first drive electrode Tx0a are electrically connected, and when turned off... This electrically isolates the drive driver D from the first drive electrode Tx0a.

[0186] The third switching element SW3 is connected between the receiving analog front end Rx AFE and the first drive electrode section Tx0a. It is connected in between. When turned on, the receiving analog front end Rx AFE and the first drive power When the pole section Tx0a is electrically connected and turned off, the receiving analog front end Rx AFE and The first drive electrode section Tx0a is electrically isolated from this section.

[0187] The touch controller 15 performs self-sensing using each drive electrode of the touch sensor. In this case, the touch controller 15 turns on the first switch element SW1 and the first drive electrode The part Tx0a and the second drive electrode part Tx0b can be electrically connected. The second switch element SW2 It can be turned on to electrically connect the drive driver D and the first drive electrode Tx0a. And the third switch element SW3 can be turned off. The self-sensing drive signal, amplified and output by the drive driver D, is directed to the first drive electrode section Tx0a This can be applied simultaneously to the second drive electrode Tx0b.

[0188] The touch controller 15 uses each drive electrode of the touch sensor to emit light from the stylus pen. When performing stylus sensing, which senses the pen signal, touch control Ra15 turns on the first switch element SW1, and the first drive electrode section Tx0a and the second drive electrode section Tx0b The three can be electrically connected. Turn on the third switch element SW3 and receive analog The front end Rx AFE and the first drive electrode Tx0a can be electrically connected. This allows the second switch element SW2 to be turned off. With this control, the first The pen signal received via the drive electrode section Tx0a and the second drive electrode section Tx0b is received by the analog front The input can be Rx AFE.

[0189] On the other hand, although not shown in a separate drawing, in addition to the multiple switch elements SW1, SW2, SW3, there is also Figure 22 The additional switching elements shown can also be driven together. Furthermore, the third switching element S A multiplexer M, as shown in Figure 23, is added between W3 and the receiving analog front end Rx AFE. They may be placed additionally.

[0190] Figure 26 is a partial plan view of one embodiment of the touch sensor 10' shown in Figure 19.

[0191] One embodiment of the touch sensor 10' shown in Figure 26 is one of the touch sensor 10's shown in Figure 8. The embodiment and the structure of the multiple electrodes are the same, but the drive electrodes TX0, TX1, to which the drive signal is applied The receiving electrodes RX0, RX1, RX2, RX3, which output the received signal, are configured in reverse order to TX2, TX3, and TX4. The difference lies in the fact that they exist.

[0192] Referring to Figure 26, the touch controller 15 shown in Figure 19 has multiple drive electrodes TX0, TX1 When a predetermined drive signal is simultaneously applied to the linked pattern P0, P1, P2, P3, P4, ... of TX2, TX3, TX4, ... It can be controlled to be applied. Here, the second connected pattern P of each connected pattern P0 The drive signal applied to 0b is 180 degrees in phase with the drive signal applied to the first linked pattern P0a. This is a reversed drive signal.

[0193] Figure 27 is a plan view of some of other embodiments of the touch sensor 10' shown in Figure 19.

[0194] Another embodiment of the touch sensor 10' shown in Figure 27 is the touch sensor 10 shown in Figure 11. The structure of the multiple electrodes is the same as in other embodiments, but the drive electrode to which the drive signal is applied and the receiving electrode The difference lies in the fact that the receiving electrode from which the signal is output is configured in the opposite direction.

[0195] Referring to Figure 27, the touch controller 15 shown in Figure 19 has multiple drive electrodes TX0',TX A predetermined drive signal is simultaneously applied to the linked pattern P0, P1, P2, P3, P4, ... of 1', TX2', TX3', TX4', ... The number can be controlled to be applied. Here, the second connecting pattern of each connecting pattern P0 The drive signal applied to line P0b has a phase difference of 180 compared to the drive signal applied to the first linked pattern P0a. This is a reversed drive signal.

[0196] Figure 28 is a partial plan view of yet another embodiment of the touch sensor 10' shown in Figure 19. .

[0197] Another embodiment of the touch sensor 10' shown in Figure 28 is the touch sensor shown in Figure 14. The structure of the multiple electrodes is the same as in yet other embodiments of Sa 10, but the drive signal is applied to the drive The difference lies in the fact that the dynamic electrode and the receiving electrode, which outputs the received signal, are configured in opposite ways.

[0198] Referring to Figure 28, the touch controller 15 shown in Figure 19 has multiple drive electrodes TX0'',T The linked pattern P0', P1', P2', P3', P4', ... of X1'', TX2'', TX3'', TX4'', ... simultaneously It can be controlled so that a constant drive signal is applied. Here, each linked pattern P0' The drive signal applied to the second connection pattern P0b is the same as the drive signal applied to the first connection pattern P0a. This is an inverted drive signal with a phase inverted by 180 degrees.

[0199] Figure 29 is a plan view of a part of yet another embodiment of the touch sensor 10' shown in Figure 19.

[0200] Another embodiment of the touch sensor 10' shown in Figure 29 is the touch sensor shown in Figure 16. The structure of the multiple electrodes is the same as in yet other embodiments of Sa 10, but the drive signal is applied to the drive The difference lies in the fact that the dynamic electrode and the receiving electrode, which outputs the received signal, are configured in opposite ways.

[0201] Referring to Figure 29, the touch controller 15 shown in Figure 19 has multiple drive electrodes TX0''', The concatenation pattern P0'', P1'', P2'', P3'', ... of TX1'''', TX2'''', TX3'''', ... simultaneously has a predetermined The drive signal can be controlled to be applied. Here, the second of each coupling pattern P0'' The drive signal applied to the coupling pattern P0b is the same as the drive signal applied to the first coupling pattern P0a. This is an inverted drive signal with a phase inverted by 180 degrees.

[0202] Figure 30 is a partial plan view of yet another embodiment of the touch sensor 10' shown in Figure 19. .

[0203] Another embodiment of the touch sensor shown in Figure 30 is the touch sensor shown in Figure 18. Furthermore, the structure of the multiple electrodes is the same as in other embodiments, but the drive electrode to which the drive signal is applied is the same. The difference lies in the fact that the receiving electrode, which outputs the received signal, is configured in the opposite direction.

[0204] Referring to Figure 30, the touch controller 15 shown in Figure 19 is the first of a plurality of drive electrodes Tx0 Control the system so that a predetermined drive signal is applied simultaneously to the drive electrode unit Tx0a and the second drive electrode unit Tx0b. This can be done. Here, the drive signal applied to the first drive electrode Tx0a is the second drive electrode Tx This is an inverted drive signal, which is a drive signal applied to 0b with a phase inverted by 180 degrees.

[0205] The touch controller 15 shown in Figure 19 is any of the touch sensors shown in Figures 26 to 30. Or the change in mutual capacitance from multiple receiving electrodes RX0, RX1, RX2, RX3, ... of a single touch sensor. The system receives a received signal containing quantitative information and outputs a differential signal from the received signal. This can be done. Then, the differential signal is integrated and multiple receiving electrodes RX0, RX1, RX2, RX3, ... The received signal can be reconstructed, and the code of the reconstructed received signal can be The touch position of an object is determined based on the information about the change in the processed mutual capacitance. It is possible.

[0206] Figure 31 illustrates the first driving method of the touch input devices 1,1' shown in Figures 2 and 19. This is a drawing.

[0207] The first driving method shown in Figure 31 is a touch sensor 1 that takes into account the driving of the display panel 20. This is a driving method for 0,10'. This first driving method is shown in the touch controller in Figures 2 and 19. It may be carried out at 15.

[0208] The first driving method synchronizes the touch sensors 10, 10' to at least one horizontal synchronization signal H-sync. Although it is driven by the same mechanism, after the horizontal synchronization signal is applied to the display panel 20, This is a method for driving touch sensors 10, 10' during a predetermined time interval. The time interval is from the time when the horizontal synchronization signal began to be applied to the display panel 20 to the next water This may be during the time immediately before the normal synchronization signal is applied to the display panel 20.

[0209] Here, the horizontal synchronization signal H-sync lifts one scanline of the display panel 20. This is a refresh signal. The meaning of driving touch sensors 10,10' is: The touch controller 15 applies a drive signal to the selected drive electrode of the touch sensors 10, 10'. This means enabling the system to receive a sensing signal from the receiving electrode.

[0210] This first driving method uses touch sensors 10, 10' to transmit at least one horizontal synchronization signal Hs Although it is driven in synchronization with YNC, the horizontal synchronization signal is applied to the display panel 20. After that, the touch sensors 10, 10' are driven for a predetermined time interval, so the touch sensors 10, 10 While the ' is in operation, the horizontal synchronization signal H-sync is not applied to the display panel 20. However, This minimizes display noise caused by the driving of the display panel 20. ru.

[0211] On the other hand, Figure 31 shows the time between two adjacent horizontal synchronization signals H-sync along the time axis t. In the interval, it is indicated that the touch sensors 10, 10' should be driven only once, but two Touch sensors 10,10' may also be driven at temperatures above 10°.

[0212] Figure 32 illustrates the second driving method for the touch input devices 1,1' shown in Figures 2 and 19. This is a drawing.

[0213] The second driving method shown in Figure 32 is a touch sensor 1 that takes into account the driving of the display panel 20. This is a driving method for 0,10'. This second driving method is shown in the touch control in Figures 2 and 19. This may be carried out in step 15.

[0214] The second driving method involves the driving time interval of the touch sensors 10, 10' and the driving of the display panel 20. This is a driving method that completely separates time intervals. For example, the overall horizontal synchronization signal H-sync is driven. Afterwards, control was used to drive the touch sensors 10, 10', although this was not shown in the drawing. Controlling the horizontal synchronization signal H-sync to be driven after the touch sensors 10 and 10' are driven. It is the law.

[0215] Referring to Figure 32, in the time interval between the two vertical synchronization signals V-sync1 and V-sync2, A one-hour interval is the time interval during which the horizontal synchronization signal H-sync, which constitutes one frame, is driven. Assuming that the second time interval is the time interval in which the touch sensors 10,10' are driven, The touch controller 15 shown in Figures 2 and 19 operates in the first time interval and the second time interval. They can be controlled to be completely separated from each other.

[0216] Here, the second time interval is the same as the first time interval, or a shorter time interval. It is acceptable. On the other hand, although not shown in the diagram, the second time section is ahead of the first time section in terms of time. It may be even earlier. That is, after the touch sensors 10, 10' are driven first, multiple water The H-sync synchronous signal may be driven.

[0217] This second driving method allows the display panel to operate while the touch sensors 10,10' are being driven. There is no display update for the 20, so the touch sensor 10,10' While it is in operation, it is designed not to be affected by display noise from the display panel 20. This has the advantage of being driven by the touch sensors 10, 10' on the display panel 20. The effects of potential flicker can also be minimized.

[0218] Figure 33 illustrates the third driving method for the touch input devices 1,1' shown in Figures 2 and 19. This is a drawing.

[0219] The third driving method shown in Figure 33 is a touch sensor 1 that takes into account the driving of the display panel 20. This is a driving method for 0,10'. Such a third driving method is the touch control shown in Figures 2 and 19. This may be carried out in step 15.

[0220] Referring to Figure 33, the third driving method is the driving timing of the touch sensors 10, 10' and the disk When the drive timing of the play panel 20 is completely isolated, the touch report rate (Touch report rate) is the same as the display refresh rate. This is the driving method when the value is high.

[0221] As shown in Figure 33, the display controller 25 outputs two vertical synchronization signals V-sy In the time interval between nc1 and V-sync2, the entire time interval during which the horizontal synchronization signal H-sync is driven is The time interval is divided into the first time interval display sub frame 1 and the second time interval display sub frame 2. Then, the touch controller 15 displays sub frame 1, display sub During a predetermined time in frame 2, activate the touch sensors 10, 10' (touch frame 1) or , a predetermined time between the second time interval display sub frame 2 and the second vertical synchronization signal V-sync 2 The touch sensors 10, 10' can be driven (touch frame 2) in between. Here, If the display refresh rate is 60Hz, then the touch report rate is 120Hz. good.

[0222] On the other hand, in Figure 33, the touch report rate is twice the display refresh rate. It has been indicated that, rather than being limited to this, the touch report rate of the display The refresh rate can be three, four, ..., or even N times higher.

[0223] This third driving method allows the display to operate while the touch sensors 10, 10' are being driven. Since there is no display update for Nell 20, the touch sensor 10,10' will be operational. This has the advantage of not being affected by display noise from the display panel 20. Furthermore, the drive of the touch sensors 10, 10' may cause freezing in the display panel 20. The impact of the ker can also be minimized.

[0224] Figure 34 illustrates the fourth driving method for the touch input devices 1,1' shown in Figures 2 and 19. This is a drawing.

[0225] The fourth driving method shown in Figure 34 is a touch sensor 1 that takes into account the driving of the display panel 20. This is a driving method for 0,10'. Such a fourth driving method is the touch control shown in Figures 2 and 19. This may be carried out in step 15.

[0226] Referring to Figure 34, the fourth driving method is the driving timing of the touch sensors 10, 10' and the disk When the drive timing of the play panel 20 is completely isolated, the touch report rate This is an alternative driving method when the refresh rate is faster than the display refresh rate.

[0227] As shown in Figure 34, the display controller 25 outputs two vertical synchronization signals V-sy In the time interval between nc1 and V-sync2, the entire time interval during which the horizontal synchronization signal H-sync is driven is The time interval is divided into the first time interval display sub frame 1 and the second time interval display sub frame 2. In this case, the touch controller 15 receives a vertical synchronization signal V-sync1 from an external source and, based on this, One or more internal signals whose period is 1 / N times (where N is a natural number) or whose frequency is N times (where N is a natural number) After generation, the generated internal signal is applied to the touch sensors 10, 10' based on the generated internal signal. The timing of motion signals can be controlled.

[0228] If the aforementioned internal signal is not used, the touch sensors 10, 10' will be driven in multiple time intervals. The touch controller 15 must control Touch frame 1 and Touch frame 2 individually. No. However, according to the fourth drive method described above, the touch controller 15 is touch sensor The two or more time intervals in which Sa10 and 10' are driven are controlled based on the generated internal signal. Because it can be controlled, there is the advantage of simplifying the drive control of the touch sensors 10,10'. .

[0229] Furthermore, the fourth driving method involves the display panel 2 while the touch sensors 10, 10' are being driven. Since there is no display update, while the touch sensor 10,10' is active, This has the advantage of being unaffected by display noise caused by the display panel 20. Also, The flicker shadow that may occur on the display panel 20 due to the operation of the touch sensors 10, 10' The resonance can also be minimized.

[0230] Figure 35 illustrates a fifth driving method for the touch input devices 1,1' shown in Figures 2 and 19. This is a drawing.

[0231] The fifth driving method shown in Figure 35 is a touch sensor 1 that takes into account the driving of the display panel 20. This is a driving method for 0,10'. Such a fifth driving method is the touch control shown in Figures 2 and 19. This may be carried out in step 15.

[0232] Referring to Figure 35, the fifth driving method is the driving timing of the touch sensors 10, 10' and the disk When the drive timing of the play panel 20 is completely isolated, the touch report rate For cases where the touch sensor is faster than the display refresh rate, not just the touch sensor 10,10' This is a driving method that also supports the use of a stylus.

[0233] When the touch sensors 10, 10' and the stylus are driven to be supported simultaneously, the touch controls The controller 15 also performs time division for the drive / reception time interval of the touch sensors 10, 10' and the stylus. It can be driven by (time divisions).

[0234] As shown in Figure 35, the display controller 25 outputs two vertical synchronization signals V-sy In the time interval between nc1 and V-sync2, the entire time interval during which the horizontal synchronization signal H-sync is driven is The time interval is divided into the first time interval display sub frame 1 and the second time interval display sub frame 2. Then, the touch controller 15 displays subframe 1 and displays subframe f. During a predetermined time interval between steps 2, the touch sensors 10, 10' are driven to drive / receive the stylus. However, the touch sensor drive and the stylus drive / reception time are driven separately. It is possible.

[0235] For example, a predetermined time between two time intervals, display sub frame 1 and display sub frame 2. During this time, the touch sensors 10, 10' and the stylus are driven alternately (Touch frame 1-1, It is possible to use Stylus frame 1, Touch frame 1-2, and Stylus frame 2.

[0236] Here, the meaning of the touch controller 15 driving the stylus is that it is located externally. A pen drive signal that allows a stylus to be driven using the principle of an electric or magnetic field, It can also be applied to the touch sensors 10, 10'. At this time, multiple touch sensors 10, 10' One or more second electrodes may also receive the pen drive signal from the touch controller 15. The touch sensors 10, 10' can then receive the pen drive signal from a separate electrode in the touch controller. It can also receive signals from the Torola 15.

[0237] Other examples include a predetermined time interval between two time intervals, display subframe 1 and display subframe 2. During this time, the driving of touch sensors 10,10' and the receiving of stylus signals are performed alternately. (Touch frame 1-1, Stylus frame 1, Touch frame 1-2, Stylus frame 2) It can be controlled.

[0238] Here, the meaning of the touch controller 15 receiving the stylus is that it is located externally. This method involves receiving the pen signal emitted from the stylus using the principles of electric or magnetic fields. This is acceptable. At this time, the touch controller 15 uses the multiple first electrodes of the touch sensors 10, 10' or The pen signal can also be received via multiple second electrodes, and is included in the touch sensors 10, 10'. The pen signal can also be received via a separate, additional electrode.

[0239] Another example is the time interval between two time intervals, display subframe 1 and display subframe 2. During a set period of time, the operation of touch sensors 10,10' and the operation and reception of the stylus alternate. Return and execute (Touch frame 1-1, Stylus frame 1, Touch frame 1-2, Stylus frame 2) It can be controlled to do so.

[0240] Also, the last refresh time interval is display sub frame 2 and the next vertical sync signal is V-sync 2. During the time between these two points, the touch sensors 10, 10' and the stylus are both driven, but the touch sensor The sensor and stylus are driven alternately (Touch frame 2-1, Stylus frame 3, Touch fr ame 2-2, Stylus frame 4) can be made to work. Alternatively, the touch sensors 10, 10' can be driven and , the stylus is driven and / or receives repeatedly in alternation (Touch frame 2-1, Stylus f It can be controlled to be frame 3, Touch frame 2-2, Stylus frame 4.

[0241] The touch controller 15 sets the stylus report rate. If you want to control it to be even higher than portrait, the stylus report rate will be the touch rate. The portrait can be N times (where N is a natural number greater than 1). In Figure 35, the stylus This assumes that the report rate is twice the touch report rate. In Figure 35, if the display refresh rate is 60Hz, the touch report rate is The touch frequency is 120Hz, and the stylus report rate may be 240Hz. In this case, touch The controller 15 divides the total time interval for driving the touch sensors 10,10' into two parts. (Touch frame 1-1, Touch frame 1-2), during the predetermined time interval between the two divided time segments The stylus is driven (Stylus frame 1), and the second driving time interval (Touch frame 1- 2) After this, you can drive the stylus (Stylus frame 2) again in between. ru.

[0242] This fifth driving method allows the touch sensors 10, 10' and the stylus to be driven while the touch sensors 10, 10' and the stylus are being driven. There is no display update for the display panel 20, so the touch sensors 10, 10' and While the stylus is in motion, the display noise from the display panel 20 is affected. There is an advantage in that it will no longer receive. Also, the touch sensors 10, 10' and the stylus drive the The effects of flicker that may occur on the display panel 20 can also be minimized.

Claims

1. In a touch input device including a display panel, A touch sensor including a plurality of first electrodes and a plurality of second electrodes arranged to intersect the plurality of first electrodes, The system includes a touch controller configured to be electrically connected to the plurality of first electrodes and the plurality of second electrodes to control the touch sensor, Each of the aforementioned second electrodes includes a pair of electrode portions, one of which is arranged adjacent to at least one portion of the plurality of first electrodes, and the other electrode portion of the pair of electrode portions of the second electrode is arranged adjacent to at least one remaining electrode of the plurality of first electrodes. The touch controller drives the touch sensor in synchronization with at least one horizontal synchronization signal applied to the display panel, but is configured to drive the touch sensor within a predetermined time period after the horizontal synchronization signal is applied to the display panel. The touch controller controls the system to receive sensing signals from the plurality of first electrodes by simultaneously applying a first drive signal to one of the pair of electrode portions of the second electrode and a second drive signal to the other electrode portion of the pair of electrode portions. The first drive signal has the same magnitude as the second drive signal, but with its phase inverted by 180 degrees. The touch controller includes a drive circuit section electrically connected to the plurality of second electrodes, The drive circuit section includes a first switch element that electrically connects or disconnects a pair of electrode sections of each of the second electrodes, in a touch input device.

2. In a touch input device including a display panel, A touch sensor including a plurality of first electrodes and a plurality of second electrodes arranged to intersect the plurality of first electrodes, The system includes a touch controller configured to be electrically connected to the plurality of first electrodes and the plurality of second electrodes to control the touch sensor, Each of the aforementioned second electrodes includes a pair of electrode portions, one of which is arranged adjacent to at least one portion of the plurality of first electrodes, and the other electrode portion of the pair of electrode portions of the second electrode is arranged adjacent to at least one remaining electrode of the plurality of first electrodes. The touch controller is configured to drive the touch sensor in a time interval different from the time interval in which a horizontal synchronization signal is applied to the display panel. The touch controller controls the system to receive sensing signals from the plurality of first electrodes by simultaneously applying a first drive signal to one of the pair of electrode portions of the second electrode and a second drive signal to the other electrode portion of the pair of electrode portions. The first drive signal has the same magnitude as the second drive signal, but with its phase inverted by 180 degrees. The touch controller includes a drive circuit section electrically connected to the plurality of second electrodes, The drive circuit section includes a first switch element that electrically connects or disconnects a pair of electrode sections of each of the second electrodes, in a touch input device.

3. The aforementioned drive circuit section is A second switch element connected to one end of the first switch element, A third switch element connected to the other end of the first switch element, A fourth switch element connected between the second switch element and AC ground, A fifth switch element connected between the third switch element and the AC ground, A touch input device according to claim 1 or 2, including the following:

4. The aforementioned drive circuit section is A drive driver that amplifies and outputs the first drive signal, A second switch element connected between the drive driver and one of the pair of electrode portions, A third switch element connected to any one of the aforementioned electrode portions, The receiving analog front end connected to the third switching element, A touch input device according to claim 1 or 2, including the following:

5. In a touch input device including a display panel, A touch sensor including a plurality of first electrodes and a plurality of second electrodes arranged to intersect the plurality of first electrodes, The system includes a touch controller configured to be electrically connected to the plurality of first electrodes and the plurality of second electrodes to control the touch sensor, Each of the aforementioned second electrodes includes a pair of electrode portions, one of which is arranged adjacent to at least one portion of the plurality of first electrodes, and the other electrode portion of the pair of electrode portions of the second electrode is arranged adjacent to at least one remaining electrode of the plurality of first electrodes. The touch controller drives the touch sensor in synchronization with at least one horizontal synchronization signal applied to the display panel, but is configured to drive the touch sensor within a predetermined time period after the horizontal synchronization signal is applied to the display panel. The touch controller controls the system to receive sensing signals from the plurality of first electrodes by simultaneously applying a first drive signal to one of the pair of electrode portions of the second electrode and a second drive signal to the other electrode portion of the pair of electrode portions. The first drive signal has the same magnitude as the second drive signal, but with its phase inverted by 180 degrees. The touch controller includes a drive circuit section electrically connected to the plurality of second electrodes, The aforementioned drive circuit section is A plurality of switching units, each electrically connected to a pair of electrode portions of the second electrode, electrically connect or disconnect the pair of electrode portions from each other, A multiplexer that outputs two selected signals from the signals output from the plurality of switching units, A differential amplifier that differentially amplifies the two signals output from the multiplexer and outputs the result, A touch input device, including one.

6. In a touch input device including a display panel, A touch sensor including a plurality of first electrodes and a plurality of second electrodes arranged to intersect the plurality of first electrodes, The system includes a touch controller configured to be electrically connected to the plurality of first electrodes and the plurality of second electrodes to control the touch sensor, Each of the aforementioned second electrodes includes a pair of electrode portions, one of which is arranged adjacent to at least one portion of the plurality of first electrodes, and the other electrode portion of the pair of electrode portions of the second electrode is arranged adjacent to at least one remaining electrode of the plurality of first electrodes. The touch controller is configured to drive the touch sensor in a time interval different from the time interval in which a horizontal synchronization signal is applied to the display panel. The touch controller controls the system to receive sensing signals from the plurality of first electrodes by simultaneously applying a first drive signal to one of the pair of electrode portions of the second electrode and a second drive signal to the other electrode portion of the pair of electrode portions. The first drive signal has the same magnitude as the second drive signal, but with its phase inverted by 180 degrees. The touch controller includes a drive circuit section electrically connected to the plurality of second electrodes, The aforementioned drive circuit section is A plurality of switching units, each electrically connected to a pair of electrode portions of the second electrode, electrically connect or disconnect the pair of electrode portions from each other, A multiplexer that outputs two selected signals from the signals output from the plurality of switching units, A differential amplifier that differentially amplifies the two signals output from the multiplexer and outputs the result, A touch input device, including

7. In a touch input device including a display panel, A touch sensor including a plurality of first electrodes and a plurality of second electrodes arranged to intersect the plurality of first electrodes, The system includes a touch controller configured to be electrically connected to the plurality of first electrodes and the plurality of second electrodes to control the touch sensor, Each of the aforementioned second electrodes includes a pair of electrode portions, one of which is arranged adjacent to at least one portion of the plurality of first electrodes, and the other electrode portion of the pair of electrode portions of the second electrode is arranged adjacent to at least one remaining electrode of the plurality of first electrodes. The touch controller drives the touch sensor in synchronization with at least one horizontal synchronization signal applied to the display panel, but is configured to drive the touch sensor within a predetermined time period after the horizontal synchronization signal is applied to the display panel. The touch controller controls the system to receive sensing signals from the plurality of first electrodes by simultaneously applying a first drive signal to one of the pair of electrode portions of the second electrode and a second drive signal to the other electrode portion of the pair of electrode portions. The first drive signal has the same magnitude as the second drive signal, but with its phase inverted by 180 degrees. The touch controller includes a drive circuit section electrically connected to the plurality of second electrodes, The aforementioned drive circuit section is A drive driver that amplifies the first drive signal and outputs it to one of the pair of electrode portions of the second electrode, A touch input device including a switch element that electrically connects or disconnects one of the aforementioned electrode portions from the remaining electrode portion which is different from the other electrode portion.

8. In a touch input device including a display panel, A touch sensor including a plurality of first electrodes and a plurality of second electrodes arranged to intersect the plurality of first electrodes, The system includes a touch controller configured to be electrically connected to the plurality of first electrodes and the plurality of second electrodes to control the touch sensor, Each of the aforementioned second electrodes includes a pair of electrode portions, one of which is arranged adjacent to at least one portion of the plurality of first electrodes, and the other electrode portion of the pair of electrode portions of the second electrode is arranged adjacent to at least one remaining electrode of the plurality of first electrodes. The touch controller is configured to drive the touch sensor in a time interval different from the time interval in which a horizontal synchronization signal is applied to the display panel. The touch controller controls the system to receive sensing signals from the plurality of first electrodes by simultaneously applying a first drive signal to one of the pair of electrode portions of the second electrode and a second drive signal to the other electrode portion of the pair of electrode portions. The first drive signal has the same magnitude as the second drive signal, but with its phase inverted by 180 degrees. The touch controller includes a drive circuit section electrically connected to the plurality of second electrodes, The aforementioned drive circuit section is A drive driver that amplifies the first drive signal and outputs it to one of the pair of electrode portions of the second electrode, A touch input device including a switch element that electrically connects or disconnects one of the aforementioned electrode portions from the remaining electrode portion which is different from the other electrode portion.

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