Touch display panel, touch driving method, electronic device and storage medium

Abstract

The application provides a touch display panel, a touch driving method, an electronic device and a storage medium. The display touch panel comprises a light-emitting layer and a touch panel which are arranged in layers. The touch panel comprises a plurality of driving electrodes arranged along a first direction, a plurality of sensing electrodes arranged along a second direction, and a touch driving unit. The touch driving unit is configured to send a scanning signal to the plurality of driving electrodes and receive a sensing signal of the plurality of sensing electrodes to determine a touch position of the touch panel. The touch driving unit is further configured to determine a target display area in the touch display panel, wherein a display refresh frequency of the target display area is different from a display refresh frequency of a display area outside the target area. According to the display refresh frequency of the target display area, the frequency of the scanning signal of the plurality of target driving electrodes is adjusted to match the touch report rate of the target display area with the display refresh frequency. The plurality of target driving electrodes correspond to the target display area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, more particularly, to a touch display panel, a touch driving method, an electronic device and a storage medium. BACKGROUND

[0002] The report rate of the touch display panel refers to the frequency of reporting touch events on the touch screen in a unit of time (i.e. the number of times of reporting touch events on the touch driving unit in a unit of time, for example, 120Hz report rate, which is 120Hz touch events reported in 1s), representing the response speed of the touch screen to touch events.

[0003] The higher the report rate of the touch display panel, the faster the response speed and the better the hand tracking performance, and the faster the frequency of scanning and sampling the touch screen by the driving unit, and the faster the frequency of calculating the coordinates, resulting in higher power consumption. At present, in order to balance the response speed and power consumption, the electronic device generally uses different report rates for different application scenarios, for example, 120hz frequency report rate in non-game scenarios, and 240hz frequency report rate in game scenarios. Although using different report rates for different application scenarios can reduce power consumption to a certain extent, the existing touch screen operation still has the problem of high power consumption. SUMMARY

[0004] The present application provides a touch display panel, a touch driving method, an electronic device and a storage medium. The various aspects related to the embodiments of the present application are introduced below.

[0005] In a first aspect, a touch display panel is provided, comprising: a light-emitting layer comprising a pixel array; a touch panel stacked with the light-emitting layer, comprising a plurality of driving electrodes arranged along a first direction, a plurality of sensing electrodes arranged along a second direction, and a touch driving unit; the touch driving unit is connected with the plurality of driving electrodes and the plurality of sensing electrodes, for sending a scanning signal to the plurality of driving electrodes and receiving a sensing signal of the plurality of sensing electrodes to determine a touch position of the touch panel; the touch driving unit is further configured to: determine a target display area in the touch display panel, wherein the display refresh frequency of the target display area is different from the display refresh frequency of a display area outside the target area; adjust the frequency of the scanning signal of a plurality of target driving electrodes according to the display refresh frequency of the target display area, so that the touch report rate of the target display area matches the display refresh frequency; wherein the plurality of target driving electrodes correspond to the target display area.

[0006] As a possible implementation manner, the touch display panel further comprises a display driving unit configured to send a display driving signal to the pixel array to drive the pixel array to emit light; the touch driving unit is connected with the display driving unit, and the determining of the target display region in the touch display panel comprises: determining display refresh frequencies of the plurality of sub-pixels according to a frequency of the display driving signal sent by the display driving unit; and determining, as the target display region, a region in the pixel array in which the plurality of sub-pixels having different display refresh frequencies are located.

[0007] As a possible implementation manner, the scanning signal comprises a plurality of groups of scanning waveforms, each group of the scanning waveforms comprises a plurality of single square waves, and the adjusting of the frequency of the scanning signal of the plurality of target driving electrodes comprises: adjusting a number of the single square waves in each group of the scanning waveforms, and / or adjusting a cycle time of the single square waves in each group of the scanning waveforms.

[0008] As a possible implementation manner, the adjusting of the frequency of the scanning signal of the plurality of target driving electrodes to match the touch report rate of the target display region with the display refresh frequency of the target display region comprises: adjusting the frequency of the scanning signal of the plurality of target driving electrodes to make the touch report rate of the target display region be twice or more than twice the display refresh frequency of the target display region.

[0009] As a possible implementation manner, the sensing signal is a mixed frequency sensing signal generated by the plurality of driving electrodes; and the touch driving unit comprises a filter configured to separate the mixed frequency signal to obtain sampling information of the target display region and a display region other than the target display region.

[0010] As a possible implementation manner, the touch driving unit receives the mixed frequency sensing signal at fixed time intervals.

[0011] In a second aspect, a touch driving method is provided. The method is applied to a touch display panel. The touch display panel includes a light emitting layer including a pixel array, a touch panel stacked with the light emitting layer, and a touch driving unit. The touch panel includes a plurality of drive electrodes arranged along a first direction, a plurality of sensing electrodes arranged along a second direction, and the touch driving unit. The touch driving unit is connected with the plurality of drive electrodes and the plurality of sensing electrodes, and is configured to send a scanning signal to the plurality of drive electrodes and receive a sensing signal of the plurality of sensing electrodes to determine a touch position of the touch panel. The method includes determining a target display area in the touch display panel, wherein a display refresh frequency of the target display area is different from a display refresh frequency of a display area other than the target area. The method further includes adjusting a frequency of the scanning signal of a plurality of target drive electrodes according to the display refresh frequency of the target display area, so that a touch reporting rate of the target display area matches the display refresh frequency. The plurality of target drive electrodes correspond to the target display area.

[0012] As a possible implementation, the touch display panel further includes a display driving unit configured to send a display driving signal to the pixel array to drive the pixel array to emit light. The determination of the target display area in the touch display panel includes determining a display refresh frequency of the plurality of sub-pixels according to a frequency of the display driving signal sent by the display driving unit, and determining a region in the pixel array in which a plurality of sub-pixels having different display refresh frequencies are located as the target display area.

[0013] As a possible implementation, the scanning signal includes a plurality of groups of scanning waveforms, and each group of the scanning waveforms includes a plurality of single square waves. The adjustment of the frequency of the scanning signal of the plurality of target drive electrodes includes adjusting a number of single square waves in each group of the scanning waveforms and / or adjusting a cycle time of the single square waves in each group of the scanning waveforms.

[0014] As a possible implementation, the adjustment of the frequency of the scanning signal of the plurality of target drive electrodes so that the touch reporting rate of the target display area matches the display refresh frequency includes adjusting the frequency of the scanning signal of the plurality of target drive electrodes so that the touch reporting rate of the target display area is twice or more than twice the display refresh frequency of the target display area.

[0015] As a possible implementation, the sensing signal is a mixed frequency sensing signal generated by the plurality of drive electrodes. The method further includes filtering the mixed frequency sensing signal to separate the mixed frequency signal to obtain sampling information of the target display area and a display area other than the target display area.

[0016] In a third aspect, an electronic device is provided, comprising the touch display panel according to the first aspect.

[0017] In a fourth aspect, an electronic device is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to invoke and run the computer program from the memory to execute the method according to the second aspect.

[0018] In a fifth aspect, a computer readable storage medium is provided, the storage medium is configured to store a computer program, and the computer program is configured to implement the method according to the second aspect when executed.

[0019] The technical solution provided in the embodiments of the present application adjusts the driving signal of the touch scanning electrode corresponding to the target display area with a changing display refresh rate, so that the touch reporting rate of the area is matched with the display refresh rate, thereby avoiding the problems of power waste and poor experience caused by excessively high or low reporting rate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a touch display panel in the related art.

[0021] Figure 2 is a schematic structural diagram of a display layer in Figure 1 .

[0022] Figure 3 is a schematic structural diagram of a touch layer in Figure 1 .

[0023] Figure 4 is a structural diagram of a display layer in the touch display panel provided by the embodiments of the present application.

[0024] Figure 5 is a structural diagram of a touch layer in the touch display panel provided by the embodiments of the present application.

[0025] Figure 6 is a waveform diagram of a scanning signal in a plurality of driving electrodes of a target area provided by the embodiments of the present application.

[0026] Figure 7 is a schematic principle diagram of a filter in a touch driving unit provided by the embodiments of the present application.

[0027] Figure 8 is a schematic flowchart of a scanning driving method provided by the embodiments of the present application.

[0028] Figure 9 is a schematic diagram of an electronic device provided by an embodiment of the present application.

[0029] Figure 10is a schematic diagram of an electronic device provided by another embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solution provided by the embodiments of the present application relates to a touch display panel, a touch driving method, an electronic device and a storage medium. Before introducing the embodiments of the present application, the problems existing in the touch display panel and the touch driving method in the related art will be illustrated in detail in combination with the drawings.

[0031] Figure 1 A schematic structural diagram of a touch display panel 100 in the related art is shown. Figure 1 The touch display panel 100 in the related art includes a display layer 110 and a touch layer 120. Figure 2 and Figure 3 are partial schematic diagrams of the display layer 110 and the touch layer 120, respectively.

[0032] As shown in Figure 2 , the display layer 110 includes a pixel array, a pixel circuit, a driving circuit, a display driving chip (drive IC, DIC), and the like.

[0033] The pixel array includes a plurality of sub-pixels 111 arranged in an array, and each sub-pixel is provided with a pixel circuit 112 corresponding thereto, and the pixel circuit includes a plurality of switching transistors for controlling each sub-pixel to emit light under the driving of the driving circuit.

[0034] The driving circuit 113 includes a plurality of scan lines 1131 connected to a plurality of pixel circuits corresponding to each pixel row, and a plurality of data lines 1132 connected to a plurality of pixel circuits corresponding to each pixel column.

[0035] The display driving chip 114 is connected to the plurality of scan lines 1131 and the plurality of data lines 1132, and is used to provide an electrical signal to drive the display layer 110 to display.

[0036] The touch layer 120 is arranged in a stack with the display layer 110, and is used to identify the touch operation of a user, so as to realize human-computer interaction. The structure of the touch layer in the related art and its working principle will be described in more detail in combination with Figure 3 .

[0037] As shown in Figure 3 , the touch layer 120 includes a driving electrode array and a sensing electrode array, wherein the driving electrode array includes a plurality of driving electrodes 121 arranged along a first direction, and the sensing electrode array includes a plurality of sensing electrodes 122 arranged along a second direction. The driving electrodes 121 and the sensing electrodes 122 are usually made of a transparent conductive material, which may be, for example, Indium Tin Oxides (ITO).

[0038] The touch control layer 120 further comprises a touch driving unit (TIC) 123 connected with the plurality of driving electrodes 121 and the plurality of sensing electrodes 122, for sending a scanning signal to the driving electrodes 121 and detecting a sensing signal of the plurality of sensing electrodes 122, so as to determine a touch position; the plurality of driving electrodes 121 are also referred to as TX channels, and the sensing electrodes are also referred to as RX channels.

[0039] The plurality of driving electrodes 121 and the plurality of sensing electrodes 122 are arranged in perpendicular intersection, and the intersection of the two electrodes forms a capacitor, that is, the two groups of electrodes constitute electrodes of the capacitor. When a finger touches, the touch point will affect the coupling between the two electrodes near the touch point, thereby changing the capacitance between the two electrodes. When detecting the mutual capacitance, the driving electrodes send excitation signals in turn, and the sensing electrodes receive signals at the same time, so that the capacitance values of all electrode intersection points, that is, the capacitance values of the two-dimensional plane of the entire touch screen, can be obtained. According to the two-dimensional capacitance variation data of the touch screen, the coordinates of each touch point can be calculated. It should be noted that in the touch display panel, the first direction can be the width direction, and the second direction can be the length direction, that is, the driving electrodes extend along the length direction, and the sensing electrodes extend along the width direction. Of course, the present application does not specifically limit the directions of the two electrodes, and the driving electrodes can also be arranged to extend along the width direction, and the sensing electrodes can be arranged to extend along the length direction.

[0040] The specific principle of the touch control layer will be further described below. When a user's finger touches the screen, the capacitance value of the mutual capacitance is detected, and a difference value is obtained by subtracting a reference value from the capacitance value. When the difference value exceeds a preset threshold value, it can be determined that a finger touches the screen, and the number of fingers touching the screen and the position information of the user touching the screen can be determined. Here, the reference value is a value set according to the capacitance (which can be referred to as the background capacitance) of the touch display panel when it is not touched. Since the background capacitances of different regions on the touch screen can not be consistent, the reference value can be usually set as an average value of the background capacitances of a plurality of regions on the touch screen, or as a maximum value of the background capacitances of the plurality of regions, or as the average value or the maximum value plus a constant, or as a value greater than the average value or the maximum value, and the present application does not limit this.

[0041] In the related art, the manner in which the touch driving unit 123 sends a scanning signal to the plurality of driving electrodes 121 includes single-channel sequential scanning and multi-channel group scanning. The report point rate of the touch screen is determined by the scanning time of the screen channels and the data processing and coordinate calculation time of the touch driving unit; since the data processing time and the coordinate calculation time of the touch driving unit are usually short. The key to determining the high and low of the report point rate depends on the time required for scanning all the TX channels on the screen.

[0042] As described above, the report rate of the existing touch screen depends on the time required to complete the scanning of all TX channels and the data processing by the touch driving unit, and to report the coordinates on the entire screen. Therefore, the report rate of the entire touch screen is a constant value at a moment. In order to meet the basic touch requirements, i.e., to achieve good hand following performance, the report rate is usually set to be twice the display frequency. For example, when the display layer refresh rate is 60 Hz, the touch report rate is usually set to 120 Hz.

[0043] With the development of display technology, in order to achieve the purpose of reducing screen power consumption, a local refresh technical solution has appeared in the display field at present, that is, different refresh rates are used in different areas of the same screen. For example, in a video scene, the refresh rate of the area outside the video picture display area can be reduced; for example, in a split screen application scene, the display areas of different applications can be set to be different, for example, the refresh rate of the area where the instant messaging application is located is reduced, and the refresh rate of the area where the short video application is located is increased, so as to reduce the overall power consumption on the premise of providing better user experience.

[0044] In the driving scheme of the touch layer described above, whether the refresh rate of the current display layer is a fixed value (for example, 60 Hz or 120 Hz) or the refresh rates of different display areas are different, the report rate of the entire touch layer at the same moment is a fixed value. At this time, the touch report rate and the display refresh rate are mismatched, which will be illustrated by examples. For example, when the touch report rate is 120 Hz and the refresh rate of all display areas is 60 Hz, the touch report rate and the display refresh rate are matched; when the refresh rate of a first display area is adjusted to 30 Hz and the refresh rate of a second display area is adjusted to 120 Hz, if the touch report rate is still maintained at 120 Hz, at this time, the touch report rate is "wasted" in the first display area, and the report rate is insufficient in the second display area. Therefore, how to balance the high report rate of touch driving and low power consumption has become a problem to be solved.

[0045] In view of the above problems, the embodiments of the present application provide a touch display panel, a touch driving method, an electronic device and a storage medium. The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0046] The touch display panel 400 provided by the embodiments of the present application includes a light-emitting layer 410 and a touch panel 420 which are arranged in layers, Figure 4 andFigure 5 Schematic structural diagram of the light-emitting layer and the touch layer, respectively.

[0047] As shown in Figure 4 , the light-emitting layer 410 includes a pixel array 411, which includes a plurality of sub-pixels arranged in an array, capable of emitting light under the driving of a display driving signal for display. The specific principle of the light-emitting layer 410 will not be described here, and can be referred to the description of the light-emitting layer in the foregoing Figure 2 .

[0048] The touch panel 420 is arranged above the light-emitting layer 410 along the light-emitting direction of the light-emitting layer 410. In some embodiments, the touch panel 420 can be bonded on the light-emitting layer 410 through transparent optical adhesive OCA.

[0049] As shown in Figure 5 , the touch panel 420 includes a plurality of driving electrodes 421 arranged along a first direction, a plurality of sensing electrodes 422 arranged along a second direction, and a touch driving unit 423.

[0050] The touch driving unit 423 is connected with the plurality of driving electrodes 421 and the plurality of sensing electrodes 422, and is configured to send a scanning signal to the plurality of driving electrodes 421 and receive a sensing signal of the plurality of sensing electrodes 422 to determine a touch position of the touch panel 420.

[0051] The touch driving unit 423 can send the scanning signal to the plurality of driving electrodes 421 in many ways. For example, the touch driving unit can send the scanning signal to each driving electrode in turn, while receiving the sensing signal of the sensing electrode, and determine the touch position according to the received sensing signal. For another example, the plurality of driving electrodes 421 can also be processed in groups, so that each group of driving electrodes includes a first number of driving electrodes, and the touch driving unit is configured to send the scanning signal to all driving electrodes in a group of driving electrodes at the same time, and send the driving signal to the groups of driving electrodes in turn according to the order of the groups of driving electrodes. The scanning mode of the driving signal is not limited in the embodiments of the present application.

[0052] The driving control unit in the embodiments of the present application is also configured to determine a target display area (such as the area A shown in Figure 4 ) in the touch display panel, and the refresh rate of the target display area is different from the refresh rate of the display area outside the target area. For example, the area is an area for displaying a game picture in a frequency division scenario, and the area outside the target area displays instant messaging software.

[0053] After the target display region is determined, the driving unit is further configured to adjust the frequency of the scanning signals of the plurality of target driving electrodes according to the display refresh frequency of the target display region, so that the touch report rate of the target display region matches the display refresh frequency; wherein the plurality of target driving electrodes correspond to the target display region.

[0054] Still taking Figure 4 and Figure 5 as an example, the target display region in the touch display panel is a rectangular region composed of the a1-an rows of pixels and the b1-bm rows of pixels, and the display refresh rate of the region is different from that of other regions; and the plurality of target driving electrodes correspondingly are the fourth to seventh driving electrodes (also referred to as TX4-TX7 channels).

[0055] It should be noted that Figure 5 The 10 driving electrodes shown in the above

[0056] The technical solution provided in the embodiments of the present application adjusts the driving signals of the touch scanning electrodes corresponding to the target display region with a variable display refresh rate, so that the touch report rate of the region matches the display refresh rate, thereby avoiding the problems of power waste and poor experience caused by excessively high or low report rates.

[0057] In some embodiments, the touch display panel further includes a display driving unit 431 connected with the plurality of sub-pixels in the pixel array 411, configured to drive the pixel array to emit light.

[0058] The touch driving unit 423 is further connected with the display driving unit 431, and the above-mentioned determination of the target display region in the touch display panel includes:

[0059] determining the display refresh frequency of the plurality of sub-pixels in the pixel array 411 according to the frequency of the display driving signals sent by the display driving unit, and determining the region in which the plurality of sub-pixels with different refresh frequencies in the pixel array 411 are located as the target display region according to the display refresh frequency of the plurality of sub-pixels.

[0060] In some embodiments, the touch driving unit 423 sends scanning signals to the plurality of driving electrodes 421, including a plurality of groups of scanning waveforms, each group of scanning waveforms including a plurality of single square waves, and the touch report rate of the touch display panel is the inverse of the time required by the touch driving unit to scan an entire frame of the touch screen, and the shorter the time, the higher the touch report rate. The time required by the touch driving unit to scan an entire frame of the touch screen is related to the number of single square waves, the cycle time of the single square wave, the number of driving electrodes in the touch screen, and the grouping of the driving electrodes.

[0061] Based on this, the adjusting of the frequency of the scan signal of the target driving electrode in the embodiments of the present application can be: adjusting the number of single square waves in each group of scan waveforms; and / or adjusting the cycle time of the single square wave in each group of scan waveforms.

[0062] It should be understood that the display refresh rate of the target display area being different from the display refresh rate of the area other than the target display area in the embodiments of the present application includes that the display refresh rate of the target display area is greater than the display refresh rate of the area other than the target display area, or the display refresh rate of the target display area is less than the display refresh rate of the area other than the target display area. In the above two cases, in order to match the report point rate with the display refresh rate, the adjusting of the frequency of the scan signal of the target driving electrode in the embodiments of the present application includes increasing and decreasing the frequency of the scan signal to increase or decrease the report point rate.

[0063] The adjustment of the scan signal will be illustrated in detail below taking the scheme of increasing the report point rate as an example. Figure 6 The waveforms of the scan signal are shown, which include scan signal A-scan signal D. Among them, scan signal A is the driving signal of the non-target driving electrode, and scan signal B-scan signal D are several implementation modes of the scan signal of the target driving electrode.

[0064] Figure 6 The plurality of waveforms in the above formula each include three groups of scan waveforms. Taking one group of scan waveforms as an example, the group of scan waveforms in waveform A includes four single square waves, and the cycle time of each single square wave is t1. The scan time of the group of scan waveforms is T1.

[0065] The mode of increasing the scan signal of the target driving electrode includes the following modes:

[0066] (1) The number of single square waves in each group of scan waveforms in the scan signal is reduced from four to three, and the cycle time of each single square wave remains unchanged, obtaining the scan signal B in the above formula. Figure 6 The scan time of each group of scan waveforms in the scan signal B is reduced from T1 to T2, so that the touch report point rate is increased.

[0067] (2) The number of single square waves in each group of scan waveforms remains unchanged, and the cycle time of the single square wave is reduced from t1 to t2, obtaining the scan signal C in the above formula. Figure 6 The scan time of each group of scan waveforms is reduced from T1 to T3, so that the touch report point rate is increased.

[0068] (3) The number of single square waves in each group of scan waveforms and the cycle time of the single square wave are reduced simultaneously, for example, the number of single square waves is reduced to three, and the cycle time thereof is reduced to t2, obtaining the scan signal D in the above formula. Figure 6The scan signal D in which the scan time of each group of waveforms is less than any one of the scan waveforms A-C.

[0069] It should be noted that the above only takes the improvement of the point reporting rate as an example to describe the scheme of the present application in detail. In the scheme of the embodiment of the present application, the scan time of each group of scan waveforms can also be increased by increasing the number of single square waves and / or increasing the cycle time of single square waves, so as to achieve the purpose of reducing the point reporting rate.

[0070] In some embodiments, the adjustment of the scan frequency can be performed by means of the MUX switch and the frequency selector in the touch driving unit. Specifically, after the plurality of target driving electrodes are determined according to the target display area, the frequency of the scan signal is determined by the frequency selector, and the signal is input into the plurality of target driving electrodes by the MUX switch, so as to achieve the adjustment of the frequency of the scan signal.

[0071] In some embodiments, the aforementioned adjustment of the frequency of the scan signal of the plurality of target driving electrodes so as to match the touch point reporting rate of the target display area with the display refresh frequency comprises:

[0072] The frequency of the scan signal of the plurality of target driving electrodes is adjusted so that the touch point reporting rate of the target display area is twice or more than the display refresh rate of the target display area. For example, in the initial state, the touch display panel displays at a display refresh rate of 120 Hz, and at this time, the touch point reporting rate is set to 240 Hz; when the display refresh rate of the target area in the touch display panel is reduced to 20 Hz, according to the scheme of the present application, the touch point reporting rate of the area needs to be reduced to achieve the effect of reducing power consumption, and at this time, the touch point reporting rate of the area can be set to twice or more than the display refresh rate, i.e., set to 40 Hz or more, at this time, the requirement for touch can be met on the premise of reducing power consumption.

[0073] As mentioned above, the scan frequency of the plurality of target driving electrodes corresponding to the target display area is different from that of the driving electrodes of other areas, and at this time, the sensing signal in the sensing electrode is a mixed frequency sensing signal generated by the plurality of driving electrodes. In order to determine accurate sampling information, the mixed frequency sensing signal needs to be further processed.

[0074] In some embodiments, the touch driving unit further comprises a filter for separating the mixed frequency signal to obtain the sampling information of the target display area and the display area other than the target display area.

[0075] Specifically, as Figure 7As shown, when the touch operation occurs, the scanning signal with frequency F1 in the target display area and the signal with frequency F2 in the area outside the target display area pass through mutual capacitance MC coupling to generate corresponding induced signals. The induced signals are received and processed by the front-end analog amplifier AFE in the touch driving unit to become mixed-frequency induced signals. Then, the touch driving unit is internally provided with a filter NBF composed of specific capacitors and resistors. The filter NBF is a narrow-band filter that can pass the signal with the specific frequency component preset in the received signal, while greatly attenuating or suppressing signals with other frequency components. The filtering of the signal is the premise and basis of signal processing, and the main purpose of filtering is to filter out useless interference signals or signals irrelevant to the target signal, so as to obtain the required signal of the system.

[0076] The touch driving unit internally filters the received analog electrical signal (specific voltage amplitude / certain frequency) by passing the signal with the specific frequency through the filter NBF in the touch driving unit, so as to extract the part it wants from the received numerous signals, including the target signal and various noise signals NS. Then, it can identify that the corresponding induced signal comes from the target display area or other areas, and independently process the touch positioning of the target display area and / or the touch positioning of the area outside the target display area.

[0077] Generally, the analog signal obtained after the internal analog filtering of the touch driving unit is converted into a digital signal (for example, 10101 or 10111) by the analog-to-digital converter ADC, and then the digital signal is filtered by the digital filter DF to obtain the data required by the touch driving unit for calculating the touch coordinates.

[0078] The core of digital filtering is a digital signal processor (DSP), and the touch driving unit is internally provided with a DSP unit. Digital filtering is an algorithm or device composed of digital multipliers, adders and other units, which processes the input discrete digital signal code according to the pre-programmed program.

[0079] The above describes the device embodiments of the present application in detail. Figures 1-7 The method embodiments of the present application are described in detail below. Figure 8 The method embodiments of the present application are described in detail below.

[0080] Figure 8is a schematic flowchart of a touch driving method provided by an embodiment of the present application. The method is applied to a touch display panel, which can be the touch display panel in any of the above embodiments. The touch display panel includes a light-emitting layer including a pixel array, a touch panel stacked with the light-emitting layer and including a plurality of drive electrodes arranged along a first direction, a plurality of sensing electrodes arranged along a second direction, and a touch driving unit. The touch driving unit is connected with the plurality of drive electrodes and the plurality of sensing electrodes, and is configured to send a scanning signal to the plurality of drive electrodes and receive a sensing signal of the plurality of sensing electrodes to determine a touch position of the touch panel.

[0081] Figure 8 The method in the above embodiment includes steps S810-S820.

[0082] In step S810, a target display region in the touch display panel is determined. The refresh frequency of the target display region is different from that of a display region other than the target region.

[0083] In step S820, the frequency of the scanning signal of a plurality of target drive electrodes is adjusted according to the refresh frequency of the target display region, so that the touch report rate of the target display region matches the display refresh frequency. The plurality of target drive electrodes correspond to the target display region.

[0084] Optionally, the touch display panel further includes a display driving unit configured to send a display driving signal to the pixel array to drive the pixel array to emit light. The determination of the target display region in the touch display panel includes: determining the refresh frequency of the plurality of sub-pixels according to the frequency of the display driving signal sent by the display driving unit; and determining a region in the pixel array in which a plurality of sub-pixels have different refresh frequencies as the target display region.

[0085] Optionally, the scanning signal includes a plurality of groups of scanning waveforms, and each group of scanning waveforms includes a plurality of single square waves. The adjustment of the frequency of the scanning signal of the plurality of target drive electrodes includes: adjusting the number of single square waves in each group of scanning waveforms, and / or adjusting the cycle time of single square waves in each group of scanning waveforms.

[0086] Optionally, the adjustment of the frequency of the scanning signal of the plurality of target drive electrodes so that the touch report rate of the target display region matches the display refresh frequency includes: the adjustment of the frequency of the scanning signal of the plurality of target drive electrodes so that the touch report rate of the target display region is twice or more than twice the display refresh frequency of the target display region.

[0087] Optionally, the sensing signal is a mixed frequency sensing signal generated by the plurality of driving electrodes, and the method further includes: filtering the mixed frequency sensing signal to separate the mixed frequency signal in order to obtain sampling information of the target display area and the display area outside the target display area.

[0088] This application also provides an electronic device. Figure 9 This is a schematic structural diagram of the electronic device 900, which includes a touch display panel 910. The touch display panel can be the touch display panel described in any of the embodiments above.

[0089] In this embodiment, the aforementioned electronic device may be a mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), mobile internet device (MID), or wearable device, etc.

[0090] This application also provides an electronic device. Figure 10 This is a schematic structural diagram of the electronic device 1000. Figure 10 The dashed lines in the diagram indicate that the unit or module is optional. This electronic device is used to implement the methods described in the above method embodiments; alternatively, the electronic device may also be a chip or integrated circuit capable of implementing the methods of the above embodiments.

[0091] Figure 10 The electronic device 1000 may include one or more processors 1010. The processor 1010 can support the electronic device 1000 in implementing the methods described in the preceding method embodiments. The processor 1010 can be a general-purpose processor or a special-purpose processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor 1010 can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0092] The electronic device 1000 can further include one or more memories 1020. The memories 1020 store programs, which can be executed by the processor 1010, so that the processor 1010 performs the methods described in the foregoing method embodiments. The memories 1020 can be independent of the processor 1010 or integrated in the processor 1010.

[0093] The electronic device 1000 can further include a transceiver 1030. The processor 1010 can communicate with other devices or chips through the transceiver 1030. For example, the processor 1010 can perform data transceiving with other devices or chips through the transceiver 1030.

[0094] The chip provided in the embodiments of the application includes a processor, which can be used to call and run a computer program from a memory, so that a device in which the chip is installed performs the methods described in the foregoing method embodiments. It can be understood that the processor can be any of the processors mentioned above. It can be understood that the memory can be independent of the chip or integrated in the chip.

[0095] The embodiments of the application further provide a computer readable storage medium, which stores executable codes. The executable codes are executed to implement the method according to any of the foregoing embodiments.

[0096] The embodiments of the application further provide a computer program product. The computer program product includes a program. The computer program product can be applied to the electronic device provided in the embodiments of the application, and the program causes a computer to execute the method in the embodiments of the application.

[0097] It should be understood that the units described as separate components above can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the application.

[0098] In the embodiments of the application, “B corresponding to A” means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0099] In the embodiments of the application, the term “corresponding” can mean a direct or indirect corresponding relationship between the two, can also mean an associated relationship between the two, and can also mean an indicated relationship, a configured relationship, and the like.

[0100] The term "and / or" used in the embodiments of the present application only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the front and rear associated objects.

[0101] In various embodiments of the present application, the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0102] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other means. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0103] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiments of the present application.

[0104] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0105] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server, data center and the like integrated with one or more available media sets. The available media can be magnetic media (for example, floppy disk, hard disk, magnetic tape), optical media (for example, digital video disc (DVD)) or semiconductor media (for example, solid state disk (SSD)) and the like.

[0106] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A touch display panel, characterized in that, The method comprises the following steps: a light-emitting layer comprising a pixel array; a touch panel arranged in a stack with the light-emitting layer, comprising a plurality of drive electrodes arranged along a first direction, a plurality of sensing electrodes arranged along a second direction, and a touch driving unit; the touch driving unit is connected with the plurality of drive electrodes and the plurality of sensing electrodes, and is configured to send a scanning signal to the plurality of drive electrodes and receive a sensing signal of the plurality of sensing electrodes to determine a touch position of the touch panel; the touch driving unit is further configured to determine a target display area in the touch display panel, wherein a display refresh frequency of the target display area is different from a display refresh frequency of a display area other than the target display area; according to the display refresh frequency of the target display area, the frequency of the scanning signal of a plurality of target drive electrodes is adjusted to match the touch report rate of the target display area with the display refresh frequency; wherein the plurality of target drive electrodes correspond to the target display area. 2.The touch display panel of claim 1, wherein, Further comprising: a display driving unit configured to send a display driving signal to the pixel array to drive the pixel array to emit light; the touch driving unit is connected with the display driving unit, and the determination of the target display area in the touch display panel comprises: determining the display refresh frequency of a plurality of sub-pixels according to the frequency of the display driving signal sent by the display driving unit; determining the area in the pixel array where a plurality of sub-pixels with different display refresh frequencies are located as the target display area according to the display refresh frequency of the plurality of sub-pixels. 3.The touch display panel of claim 1, wherein, The scanning signal comprises a plurality of groups of scanning waveforms, each group of scanning waveforms comprises a plurality of single square waves, and the adjustment of the frequency of the scanning signal of the plurality of target drive electrodes comprises: adjusting the number of single square waves in each group of scanning waveforms, and / or adjusting the cycle time of single square waves in each group of scanning waveforms. 4.The touch display panel of claim 1, wherein, The adjustment of the frequency of the scanning signal of the plurality of target drive electrodes to match the touch report rate of the target display area with the display refresh frequency comprises: adjusting the frequency of the scanning signal of the plurality of target drive electrodes to make the touch report rate of the target display area be twice or more than twice the display refresh frequency of the target display area.

5. The touch display panel of any one of claims 1-4, wherein: the sensing signal is a mixed frequency sensing signal generated by the plurality of drive electrodes; the touch driving unit comprises a filter configured to separate the mixed frequency sensing signal to obtain sampling information of the target display area and a display area other than the target display area. 6.The touch display panel of claim 5, wherein, The touch driving unit receives the mixed frequency sensing signal at a fixed time interval.

7. A touch driving method, the method is applied to a touch display panel, the touch display panel comprises: a light-emitting layer comprising a pixel array; a touch panel arranged in a stack with the light-emitting layer, comprising a plurality of drive electrodes arranged along a first direction, a plurality of sensing electrodes arranged along a second direction, and a touch driving unit; The touch driving unit is connected with the plurality of driving electrodes and the plurality of sensing electrodes, and is configured to send a scanning signal to the plurality of driving electrodes and receive a sensing signal of the plurality of sensing electrodes, so as to determine a touch position of the touch panel. The method comprises: determining a target display region in the touch display panel, wherein a display refresh frequency of the target display region is different from a display refresh frequency of a display region other than the target display region; adjusting a frequency of a scanning signal of a plurality of target driving electrodes according to the display refresh frequency of the target display region, so that a touch report rate of the target display region matches the display refresh frequency, wherein the plurality of target driving electrodes correspond to the target display region.

8. The method of claim 7, wherein, The touch display panel further comprises a display driving unit configured to send a display driving signal to the pixel array, so as to drive the pixel array to emit light. The determining of the target display region in the touch display panel comprises: determining a display refresh frequency of a plurality of sub-pixels according to a frequency of the display driving signal sent by the display driving unit; determining a region in the pixel array in which a plurality of sub-pixels having different display refresh frequencies are located as the target display region according to the display refresh frequencies of the plurality of sub-pixels.

9. The method of claim 7, wherein, The scanning signal comprises a plurality of groups of scanning waveforms, each group of scanning waveforms comprises a plurality of single square waves, and the adjusting of the frequency of the scanning signal of the plurality of target driving electrodes comprises: adjusting a number of single square waves in each group of scanning waveforms, and / or adjusting a cycle time of single square waves in each group of scanning waveforms.

10. The method of claim 7, wherein, The adjusting of the frequency of the scanning signal of the plurality of target driving electrodes so that the touch report rate of the target display region matches the display refresh frequency comprises: The adjusting of the frequency of the scanning signal of the plurality of target driving electrodes so that the touch report rate of the target display region is twice or more than twice the display refresh frequency of the target display region.

11. The method according to any one of claims 7-10, characterized in that, The sensing signal is a mixed frequency sensing signal generated by the plurality of driving electrodes, and the method further comprises: filtering and processing the mixed frequency sensing signal to separate the mixed frequency sensing signal, so as to obtain sampling information of the target display region and a display region other than the target display region.

12. An electronic device, comprising: The touch display panel comprises the touch display panel according to any one of claims 1-6.

13. An electronic device, comprising: The method comprises: The device comprises a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and run the computer program from the memory, so as to execute the method according to any one of claims 7-11.

14. A computer-readable storage medium, characterized in that, The storage medium is configured to store a computer program, and the computer program is executed to implement the method according to any one of claims 7-11.

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