Touch sensing device and touch sensing method

Abstract

The present invention relates to a touch sensing apparatus and a touch sensing method. The present invention provides a technique to mitigate retransmission in a low ground mass (LGM) state and to improve touch sensitivity by driving two adjacent sensor electrodes at different times.

Description

Technical Field

[0001] This invention relates to touch sensing devices. Background Technology

[0002] A panel that includes multiple sensor electrodes to sense the proximity or touch of an object is generally referred to as a touch panel. Touch panels can be completely separated from display panels used to display images, depending on the panel type. However, recently, there have been many cases where touch panels and display panels are integrated, and the two panels are collectively referred to as a panel without distinction. The panel described below will be considered as including multiple sensor electrodes for sensing the proximity or touch of an object.

[0003] The proximity or touch of an object to a panel can be sensed by a touch sensing device that drives the panel. The touch sensing device senses the proximity or touch of an object to the panel by supplying a drive signal to the panel and receiving a response signal to the drive signal.

[0004] The touch sensing device can drive the panel in either self-capacitance mode or mutual capacitance mode. When driving the panel in self-capacitance mode, the touch sensing device senses a touch on the panel by receiving a response signal from electrodes supplied with a drive signal. When driving the panel in mutual capacitance mode, the touch sensing device senses a touch on the panel by supplying a drive signal to a transmitting electrode in the sensing electrodes and receiving a response signal from a receiving electrode coupled to the transmitting electrode via a capacitor. Both self-capacitance mode and mutual capacitance mode are touch sensing modes within the capacitance mode.

[0005] In capacitive touch sensing, the grounding state of the object and the panel can affect touch sensitivity. Typically, an object changes the capacitance of the sensor electrodes when it touches the panel. The touch sensing device can sense this change in capacitance and determine whether an object is touching the panel based on the capacitance change. However, when the panel has a weak ground, the capacitance between the sensor electrodes and the object is small; therefore, even when an object approaches the sensor electrodes, the change in capacitance is small. This state of weak ground is called a low ground quality (LGM) state. A technique is needed to improve touch sensitivity in this LGM state. Summary of the Invention

[0006] In this context, one aspect of the present invention is to provide a technique for improving touch sensitivity in LGM mode. Another aspect of the present invention is to provide a technique for mitigating retransmissions in LGM mode, where, during a retransmission, the drive signal supplied to another electrode flows as noise in the response signal of the electrode in question.

[0007] Therefore, in one aspect, the present invention provides a touch sensing device for sensing touch on a panel, wherein a plurality of transmitting (TX) electrodes and a plurality of receiving (RX) electrodes are arranged intersecting each other in the panel. The touch sensing device includes: a driving circuit for driving the plurality of TX electrodes and the plurality of RX electrodes such that a response signal can be received from an electrode to which a driving signal is supplied; a control circuit for controlling the driving circuit to drive two adjacent TX electrodes or two adjacent RX electrodes at different times; and a transmitting circuit for transmitting touch data generated based on the response signal to an external device.

[0008] The control circuit can drive the TX electrode or RX electrode configured in an odd-numbered position in one direction at a first time, and drive the TX electrode or RX electrode configured in an even-numbered position in the same direction at a second time, different from the first time.

[0009] The control circuit can divide the plurality of TX electrodes or the plurality of RX electrodes into N groups (N is a natural number of 2 or greater) and drive the groups at different times. Each group may include TX electrodes or RX electrodes that have the same remainder after dividing the index of an electrode configured in one direction by N.

[0010] The control circuit can control the drive circuit to drive the TX electrode and the RX electrode at different times.

[0011] The driving circuit can use multiple channels corresponding to the multiple RX electrodes to drive the multiple RX electrodes, wherein two adjacent channels can drive the RX electrodes at different times, and the remaining channels that do not drive the RX electrodes can operate in power-saving mode.

[0012] The driving circuit can receive a response signal from the electrode to which the driving signal has been supplied in self-capacitance mode, and the driving circuit can supply a driving signal to the TX electrode and receive a response signal from the RX electrode in mutual-capacitance mode.

[0013] The control circuit can selectively control the drive circuit to operate in one of the self-capacitance mode and the mutual capacitance mode.

[0014] The control circuit can control the drive circuit to drive the two adjacent TX electrodes or the two adjacent RX electrodes at different times in the self-capacitance mode, and control the drive circuit to drive the two adjacent TX electrodes simultaneously in the mutual capacitance mode.

[0015] The control circuit can control the drive circuit to simultaneously drive multiple non-adjacent TX electrodes or multiple non-adjacent RX electrodes.

[0016] In another invention, the present invention provides a touch sensing method for sensing touch on a panel having a plurality of TX electrodes and a plurality of RX electrodes arranged intersecting each other. The touch sensing method includes: driving the RX electrodes in a first time interval of self-capacitance mode such that a response signal is received from an electrode to which a drive signal is supplied, wherein two adjacent RX electrodes are driven at different times; and sending touch data generated based on the response signal to an external device.

[0017] The touch sensing method may further include: driving the TX electrode in a second time interval of the self-capacitance mode, such that a response signal is received from the electrode to which a driving signal is supplied, wherein two adjacent TX electrodes are driven at different times respectively.

[0018] The touch sensing method may further include: determining touch coordinates in one direction using the response signal of the RX electrode, and determining touch coordinates in another direction perpendicular to the one direction using the response signal of the TX electrode. The touch data includes the touch coordinates in the one direction and the touch coordinates in the other direction.

[0019] The touch sensing method may further include: simultaneously driving multiple adjacent TX electrodes in self-capacitance mode.

[0020] The touch sensing method may further include: after driving in the self-capacitance mode, supplying a driving signal to the TX electrode and receiving a response signal from the RX electrode in the mutual capacitance mode.

[0021] The touch sensing method can simultaneously drive multiple non-adjacent RX electrodes during the step of driving the RX electrodes.

[0022] As described above, the present invention allows for improved touch sensitivity in LGM mode. In particular, the present invention allows for improved touch sensitivity by mitigating retransmission in LGM mode, where the drive signal supplied to the other electrode flows as noise in the response signal of the electrode in question. Attached Figure Description

[0023] Figure 1 This is a schematic diagram illustrating a display device according to an embodiment;

[0024] Figure 2 This is a diagram illustrating the operation of a touch sensing circuit according to an embodiment in mutual capacitance mode;

[0025] Figure 3 This is a diagram illustrating the operation of a touch sensing circuit according to an embodiment in self-capacitance mode;

[0026] Figure 4 This is a diagram showing how the drive signal supplied to another electrode flows as noise in the response signal of the electrode in question;

[0027] Figure 5 This is a diagram illustrating a first typical method of driving sensor electrodes through a drive circuit of a touch sensing circuit;

[0028] Figure 6 This is a diagram illustrating a second typical method of driving sensor electrodes via a drive circuit of a touch sensing circuit; and

[0029] Figure 7 This is a flowchart of a touch sensing method according to an embodiment. Detailed Implementation

[0030] Figure 1 This is a schematic diagram illustrating a display device according to an embodiment.

[0031] refer to Figure 1 The display device 100 may include a display panel 122, a touch panel 120, a data driving circuit 160, a gate driving circuit 150, a timing control circuit 140, a touch sensing circuit 110, and a host 130. On the display panel 122, a plurality of data lines DL connected to the data driving circuit 160 and a plurality of gate lines GL connected to the gate driving circuit 150 may be configured. Additionally, on the display panel 122, a plurality of pixels corresponding to points where the plurality of data lines DL and the plurality of gate lines GL intersect each other may be defined. On the touch panel 120, a plurality of sensor electrodes may be configured to be spaced apart from each other. One or more pixels may be configured in the area where the sensor electrodes are located. Pixels may be of the liquid crystal display (LCD) type or include organic light-emitting diode (OLED) pixels.

[0032] The display panel 122 and the touch panel 120 can be separated from each other or included in an embedded panel, wherein the display panel and the touch panel share some components.

[0033] The data drive circuit 160 supplies data signals via the data line DL to display digital images in the pixels of the display panel 122.

[0034] The gate drive circuit 150 sequentially supplies scan signals through the gate line GL to turn on or off the transistors located in each pixel.

[0035] The timing control circuit 140 supplies various control signals to the data driving circuit 160, the gate driving circuit 150, and the touch sensing circuit 110.

[0036] The timing control circuit 140 can output a data control signal DCS for controlling the data drive circuit 160 and a gate control signal GCS for controlling the gate drive circuit 150 based on external timing signals such as vertical / horizontal synchronization signals Vsync, Hsync, image signals RGB, or clock signals input from the host 130. Additionally, the timing control circuit 140 can convert the image signal RGB input from the host 130 into a data signal of the form used in the data drive circuit 160 and supply the converted image signal RGB' to the data drive circuit 160. As an example, the timing control circuit 140 can convert the image signal RGB according to the resolution or structure of the pixels of the display panel 122 and supply the converted image signal RGB' to the data drive circuit 160.

[0037] In response to the data control signal DCS input from the timing control circuit 140 and the converted image signal RGB', the data driving circuit 160 can convert the converted image signal RGB' into an analog pixel signal (data signal or data voltage), which is a voltage value corresponding to the grayscale value, and the data driving circuit 160 can supply the analog pixel signal to the data line DL. The gate driving circuit 150 can sequentially supply scan signals to the gate line GL in response to the gate control signal GCS input from the timing control circuit 140. The timing control circuit 140 can send a touch control signal TCS for timing control of the touch sensing circuit 110 to the touch sensing circuit 110.

[0038] The touch sensing circuit 110 can supply drive signals to all or some of the multiple sensor electrodes connected to the sensing line SL according to the touch control signal TCS, and receive response signals to the drive signals to generate touch data TDAT, and then send the touch data TDAT to the host 130. Figure 1 As shown, the touch sensing circuit 110 can be configured externally to the data driving circuit 160 and the gate driving circuit 150 as a component separate from them. However, depending on the implementation method, the touch sensing circuit 110 can also be implemented as an internal component of a driver integrated circuit including at least one of the data driving circuit 160 and the gate driving circuit 150, or it can be implemented as an internal component of either the data driving circuit 160 or the gate driving circuit 150.

[0039] Therefore, the action of the touch sensing circuit 110 supplying drive signals to all or some of the multiple sensor electrodes can be considered as the action of the driver integrated circuit of the touch sensing circuit 110 supplying drive signals to all or some of the multiple sensor electrodes, or, depending on the design method, as the action of the data driving circuit 160 or the gate driving circuit 150 of the touch sensing circuit 110 supplying drive signals to all or some of the multiple sensor electrodes. As mentioned above, the touch sensing circuit 110 can be a standalone component or an internal component configured inside or outside other components, without being limited by the implementation or design method, as long as it performs the same function as described in this specification.

[0040] Additionally, although the display device 100 includes Figure 1 The display device 100 may include one or more touch sensing circuits 110.

[0041] In order for the touch sensing circuit 110 to supply drive signals to all or some of the multiple sensor electrodes, sensing lines SL are required to be connected to the multiple sensor electrodes respectively. Therefore, the sensing lines SL, which are connected to the multiple sensor electrodes respectively and send drive signals, can be arranged on the touch panel 120 in a first direction (e.g., the vertical direction) or in a second direction (e.g., the horizontal direction).

[0042] The display device 100 can employ a capacitive mode that senses the approach or touch of an object by detecting changes in capacitance through sensor electrodes.

[0043] Capacitor modes can be classified into, for example, mutual capacitance modes and self-capacitance modes.

[0044] According to the mutual capacitance mode (which is a capacitance mode), a drive signal is supplied to one sensor electrode (TX electrode), and another sensor electrode (RX electrode) coupled to the TX electrode is sensed. In the mutual capacitance mode, the value sensed in the RX electrode changes according to the proximity or touch of a finger, pen, etc., and the touch or the coordinates of the touch can be detected using the value sensed in the RX electrode.

[0045] According to the self-capacitance mode (which is another type of capacitance mode), a drive signal is supplied to a sensor electrode and the sensor electrode is sensed. In self-capacitance mode, the value sensed in the TX electrode changes according to the proximity or touch of a finger, pen, etc., and the sensed value can be used to detect a touch or the coordinates of the touch. In self-capacitance mode, the sensor electrode to which the drive signal is supplied is the same as the sensor electrode to be sensed. That is, there is no distinction between the TX electrode and the RX electrode.

[0046] The display device 100 can employ both types of capacitance modes (mutual capacitance mode and self-capacitance mode). The display device 100 can distinguish between one mode and the other, so that when the mode is mutual capacitance mode, it senses touch on the touch panel in mutual capacitance mode, and when the mode is self-capacitance mode, it senses touch on the touch panel in self-capacitance mode.

[0047] Figure 2 This is a diagram illustrating the operation of a touch sensing circuit according to an embodiment in mutual capacitance mode.

[0048] refer to Figure 2 On the touch panel 120, multiple TX electrodes (TXE) and multiple RX electrodes (RXE) can be configured to intersect each other. The multiple TX electrodes (TXE) can be configured such that their length direction is set to a first direction X and they are spaced apart from each other in a second direction Y. The multiple RX electrodes (RXE) can be configured such that their length direction is set to a second direction Y and they are spaced apart from each other in the first direction X. Here, the first direction X and the second direction Y can be perpendicular to each other.

[0049] Multiple TX electrodes (TXE) and multiple RX electrodes (RXE) can be coupled to each other via capacitors. This coupling allows the signal in the AC waveform supplied to the TX electrode (TXE) to be transmitted to the RX electrode (RXE).

[0050] The touch sensing circuit 110 may include a first driving circuit 220, a second driving circuit 230, and a control circuit 210.

[0051] The first driving circuit 220 can supply the driving signal TXS to multiple TX electrodes TXE in mutual capacitance mode. The first driving circuit 220 can sequentially supply the driving signal TXS to the TX electrodes TXE along the second direction.

[0052] The second driving circuit 230 can receive response signals RXS from multiple RX electrodes RXE in mutual capacitance mode. The second driving circuit 230 can convert the response signals RXS into digital data, and the control circuit 210 can use this digital data to generate touch data including touch coordinates. The control circuit 210 can send the touch data to an external device (e.g., a host computer, see...). Figure 1 (130)). Touch coordinates can include coordinates in the first direction X and coordinates in the second direction Y.

[0053] The first driving circuit 220 may include multiple TX channels respectively connected to multiple TX electrodes TXE. The first driving circuit 220 can sequentially operate the multiple TX channels to sequentially send driving signals to the multiple TX electrodes TXE.

[0054] The second driving circuit 230 may include multiple RX channels that are respectively connected to multiple RX electrodes RXE. The second driving circuit 230 can operate multiple RX channels simultaneously and convert the response signals RXS received through the multiple RX channels into digital data.

[0055] Multiple TX channels can be used as RX channels to receive response signals and convert them into digital data. Multiple RX channels can also be used as TX channels to transmit drive signals. This multiple functionality of each channel allows the touch sensing circuit 110 to operate in mutual capacitance mode as well as in self-capacitance mode.

[0056] Figure 3 This is a diagram illustrating the operation of a touch sensing circuit according to an embodiment in self-capacitance mode.

[0057] The touch sensing circuit 110 can change its operating mode as needed during operation. For example, the touch sensing circuit 110 can operate in self-capacitance mode and then change its mode to mutual capacitance mode, or operate in mutual capacitance mode and then change its mode to self-capacitance mode. When the display device is in power-saving mode, the touch sensing circuit 110 can operate in self-capacitance mode, and then, when a touch is sensed in self-capacitance mode, the touch sensing circuit 110 can change its mode to mutual capacitance mode.

[0058] In self-capacitance mode, the first driving circuit 220 can supply a driving signal TXS to the TX electrode TXE and receive a response signal RXS from the TX electrode TXE to generate digital data for the response signal RXS. The control circuit 210 can use the digital data generated by the first driving circuit 220 to calculate the touch coordinates in the second direction Y.

[0059] In self-capacitance mode, the second driving circuit 230 can supply a driving signal TXS to the RX electrode RXE and receive a response signal from the RX electrode RXE to generate digital data for the response signal RXS. The control circuit 210 can use the digital data generated by the second driving circuit 230 to calculate the touch coordinates in the first direction X.

[0060] On the other hand, when the touch panel is in LGM state (e.g., when the user does not hold the display device in the user's hand), the drive signal supplied to the other electrode may flow as noise in the response signal of the electrode in question, and this may reduce touch sensitivity.

[0061] Figure 4 This is a diagram showing the flow of the drive signal supplied to another electrode as noise in the response signal of the electrode in question.

[0062] refer to Figure 4 The driving circuit 23 uses two channels CH1 and CH2 to simultaneously supply driving signals TXS1 and TXS2 to two adjacent sensor electrodes RXE1 and RXE2.

[0063] Here, the touch panel 120 can be in LGM state, in which the touch panel is not grounded. In this case, no current path is formed between the object, ground, and touch panel 120. Therefore, the second drive signal TXS2 supplied to the second sensor electrode RXE2 may flow into the first sensor electrode RXE1 through the capacitance formed between the two sensor electrodes RXE1, RXE2 and the object. Assume that the signal formed in the first sensor electrode RXE1 by the second drive signal TXS2 is called the retransmission signal RES, and the response signal RXS of the first drive signal TXS1 and the retransmission signal RES are formed in the first sensor electrode RXE1.

[0064] In this situation, the first channel CH1 may perceive the retransmitted signal RES as noise, which could lead to reduced touch sensitivity.

[0065] To minimize the impact of such retransmission signals and improve touch sensitivity, the touch sensing circuit according to the embodiment can drive two adjacent sensor electrodes at different times.

[0066] Figure 5 This is a diagram illustrating a first typical method of driving sensor electrodes through a drive circuit of a touch sensing circuit.

[0067] refer to Figure 5 The driving circuit 510 may include multiple channels CH1 to CH8. Multiple sensor electrodes SE1 to SE8 may be configured on the panel 520. The driving circuit 510 may be as described above. Figures 1 to 3 The first driving circuit 220 or the second driving circuit 230 described herein. Alternatively, the driving circuit 510 may include the above-mentioned references. Figures 1 to 3 The apparatus of the first drive circuit 220 and the second drive circuit 230 is described. Panel 520 may be referenced above. Figures 1 to 3 The touch panel 120 described is identical, and the multiple sensor electrodes SE1 to SE8 can be referenced above. Figures 1 to 3 The described touch panel 120 has multiple RX electrodes or multiple TX electrodes.

[0068] Each channel CH1 to CH8 can be connected to each sensor electrode SE1 to SE8. Each channel CH1 to CH8 can supply drive signals to each sensor electrode SE1 to SE8 and receive response signals from the sensor electrodes to which the channel supplies drive signals.

[0069] The driving circuit 510 can drive two adjacent sensor electrodes SE1 to SE8 at different times. This driving method allows each of the sensor electrodes SE1 to SE8 to be driven separately from its adjacent sensor electrodes.

[0070] The drive circuit 510 can drive the sensor electrodes SE1, SE3, SE5, and SE7 configured in odd positions in the direction X at a first time T1, and drive the sensor electrodes SE2, SE4, SE6, and SE8 configured in even positions in the direction X at a second time T2.

[0071] Each channel CH1 to CH8 can be driven without power during non-drive periods or in power-saving mode. For example, channels CH1, CH3, CH5, and CH7 connected to sensor electrodes SE1, SE3, SE5, and SE7 located in odd-numbered positions can be driven without power or in power-saving mode at the second time T2, while channels CH2, CH4, CH6, and CH8 connected to sensor electrodes SE2, SE4, SE6, and SE8 located in even-numbered positions can be driven without power or in power-saving mode at the first time T1.

[0072] Figure 6 This is a diagram illustrating a second typical method of driving sensor electrodes through a drive circuit of a touch sensing circuit.

[0073] refer to Figure 6 The driving circuit 610 may include multiple channels CH1 to CH(3n). Multiple sensor electrodes SE1 to SE(3n) may be configured on the panel 620. The driving circuit 610 may be as described above. Figures 1 to 3 The first driving circuit 220 or the second driving circuit 230 described herein. Alternatively, the driving circuit 610 may include the above-mentioned references. Figures 1 to 3 The apparatus of the first drive circuit 220 and the second drive circuit 230 is described. Panel 620 may be referenced above. Figures 1 to 3 The touch panel 120 described is identical, and the multiple sensor electrodes SE1 to SE(3n) can be those referenced above. Figures 1 to 3 The described touch panel 120 has multiple RX electrodes or multiple TX electrodes.

[0074] The corresponding channels CH1 to CH(3n) can be connected to the corresponding sensor electrodes SE1 to SE(3n). Each channel CH1 to CH(3n) can supply a drive signal to each sensor electrode SE1 to SE(3n) and receive a response signal from the sensor electrode to which the channel supplies the drive signal.

[0075] The driving circuit 610 can drive two adjacent sensor electrodes among the sensor electrodes SE1 to SE(3n) at different times. This driving method allows each sensor electrode SE1 to SE(3n) to be driven separately from its adjacent sensor electrode.

[0076] The driving circuit 610 can divide a plurality of sensor electrodes SE1 to SE(3n) into N groups (N is a natural number of 2 or greater) in a direction X and drive the groups at different times. Each group can include sensor electrodes SE1 to SE(3n) that have the same remainder after dividing the index of the electrodes arranged in a direction X by N. For example, the driving circuit 610 can drive the sensor electrodes SE1, SE(n+1), and SE(2n+1) of the first group at a first time T1, drive the sensor electrodes SE2, SE(n+2), and SE(2n+2) of the second group at a second time T2, and drive the sensor electrodes SE(n), SE(2n), and SE(3n) of the Nth group at a time N Tn.

[0077] In addition, the drive circuit 610 can drive channels CH1 to CH(3n) that do not receive drive signals in power-saving mode, or it can choose not to supply drive power to these channels.

[0078] Figure 7 This is a flowchart of a touch sensing method according to an embodiment.

[0079] refer to Figure 7 In the first time interval of the self-capacitance mode, the touch sensing circuit can drive the RX electrode, so that a response signal is received from the RX electrode supplied with the drive signal, and drive two adjacent RX electrodes at different times (S710).

[0080] In addition, during the second time interval of the self-capacitance mode, the touch sensing circuit can drive the TX electrode, so that a response signal is received from the TX electrode that is supplied with a drive signal, and drive two adjacent TX electrodes at different times (S720).

[0081] The touch sensing circuit can use the response signal of the RX electrode to determine the touch coordinates in one direction, and use the response signal of the TX electrode to determine the touch coordinates in another direction perpendicular to that one direction (S730).

[0082] The touch sensing circuit can send touch data, including touch coordinates in one direction and touch coordinates in another direction, to an external device (S740).

[0083] The touch sensing circuit can change its mode to mutual capacitance mode, supply a drive signal to the TX electrode, and receive a response signal from the RX electrode.

[0084] Cross-reference to related applications

[0085] This application claims priority to Korean Patent Application No. 10-2019-0171206, filed on December 19, 2019, the entire contents of which are incorporated herein by reference.

Claims

1. A touch sensing device for sensing touch on a panel, wherein a plurality of TX electrodes and a plurality of RX electrodes are disposed therein, the touch sensing device comprising: A driving circuit is used to drive the plurality of TX electrodes and the plurality of RX electrodes, such that a response signal is received from the electrodes to which a driving signal is supplied; A control circuit is used to control the drive circuit so that two adjacent TX electrodes or two adjacent RX electrodes are driven at different times respectively. as well as A transmitting circuit is used to send touch data generated based on the response signal to an external device. In this configuration, the driving circuit receives a response signal from an electrode that has already been supplied with a driving signal in self-capacitance mode, and in mutual capacitance mode, the driving circuit supplies a driving signal to the TX electrodes among the plurality of TX electrodes and receives a response signal from the RX electrodes among the plurality of RX electrodes. The control circuit selectively controls the drive circuit to operate in one of the self-capacitance mode and the mutual capacitance mode, and The control circuit controls the drive circuit to drive two adjacent TX electrodes or two adjacent RX electrodes among the plurality of TX electrodes at different times in the self-capacitance mode, and controls the drive circuit to drive the two adjacent TX electrodes simultaneously in the mutual capacitance mode.

2. The touch sensing device according to claim 1, wherein, The control circuit drives the TX electrode among the plurality of TX electrodes arranged in odd-numbered positions in one direction or the RX electrode among the plurality of RX electrodes at a first time, and drives the TX electrode among the plurality of TX electrodes arranged in even-numbered positions in one direction or the RX electrode among the plurality of RX electrodes at a second time different from the first time.

3. The touch sensing device according to claim 1, wherein, The control circuit divides the plurality of TX electrodes or the plurality of RX electrodes into N groups and drives the groups at different times. Each group includes TX electrodes or RX electrodes whose serial numbers are divided by N and have the same remainder, where N is a natural number of 2 or greater.

4. The touch sensing device according to claim 1, wherein, The control circuit controls the drive circuit to drive the TX electrode and the RX electrode at different times.

5. The touch sensing device according to claim 1, wherein, The driving circuit uses multiple channels corresponding to the multiple RX electrodes to drive the multiple RX electrodes, wherein two adjacent channels drive the RX electrodes at different times, and the remaining channels that do not drive the RX electrodes operate in power-saving mode.

6. The touch sensing device according to claim 1, wherein, The control circuit controls the drive circuit to simultaneously drive multiple non-adjacent TX electrodes among the multiple TX electrodes or multiple non-adjacent RX electrodes among the multiple RX electrodes.

7. A touch sensing method for sensing a touch on a panel, wherein a plurality of TX electrodes and a plurality of RX electrodes are disposed in the panel and intersecting with each other, the touch sensing method comprising: The TX electrode is driven in the first time interval of the self-capacitance mode, such that a response signal is received from the electrode that has been supplied with a drive signal, wherein two adjacent TX electrodes among the plurality of TX electrodes are driven at different times respectively. Sends touch data generated based on the response signal to an external device, and In mutual capacitance mode, multiple adjacent TX electrodes among the multiple TX electrodes are driven simultaneously.

8. The touch sensing method according to claim 7, further comprising: In the second time interval of the self-capacitance mode, the RX electrode among the plurality of RX electrodes is driven such that a response signal is received from the electrode that has been supplied with a drive signal, wherein two adjacent RX electrodes among the plurality of RX electrodes are driven at different times respectively.

9. The touch sensing method according to claim 8, further comprising: Touch coordinates in one direction are determined using the response signals of the RX electrodes among the plurality of RX electrodes, and touch coordinates in another direction perpendicular to the first direction are determined using the response signals of the TX electrodes among the plurality of TX electrodes. The touch data includes touch coordinates in one direction and touch coordinates in the other direction.

10. The touch sensing method according to claim 7, further comprising: After driving in the self-capacitance mode, in the mutual capacitance mode, the driving signal is supplied to the TX electrode among the plurality of TX electrodes and a response signal is received from the RX electrode among the plurality of RX electrodes.

11. The touch sensing method according to claim 7, wherein, In the self-capacitance mode, multiple non-adjacent TX electrodes among the plurality of TX electrodes are driven simultaneously.

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