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

Abstract

The invention provides a touch control display panel, a touch control driving method, electronic equipment and a storage medium, the display touch control panel comprises a light emitting layer and a touch control panel which are arranged in a stacked mode, and the touch control panel comprises a plurality of driving electrodes arranged in the first direction, a plurality of induction electrodes arranged in the second direction and a touch control driving unit; the touch driving unit is used for sending scanning signals to the plurality of driving electrodes and receiving sensing signals of the plurality of sensing electrodes so as to determine the touch position of the touch panel; the touch driving unit is further used for determining a target display area in the touch display panel, and the display refresh frequency of the target display area is different from the 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 scanning signals of the multiple target driving electrodes is adjusted, so that the touch point reporting rate of the target display area is matched with the display refresh frequency; wherein the plurality of target driving electrodes correspond to the target display area.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically to a touch display panel, a touch driving method, an electronic device and a storage medium. Background Art

[0002] The reporting rate of a touch display panel refers to the frequency at which the touch screen detects and reports touch events per unit time (i.e., the number of touch events reported by the touch drive unit per unit time, for example, a 120Hz reporting rate means that 120Hz touch events are reported within 1s), which represents the response speed of the touch screen to touch events.

[0003] The higher the reporting rate of the touch display panel, the faster the response speed and the better the hand tracking. The faster the frequency of the drive unit scanning and sampling the touch screen, 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, electronic devices generally use different reporting rates for different application scenarios. For example, in non-game scenarios, 120hz frequency reporting is used; in game scenarios, 240hz frequency reporting is used. Although using different reporting rates in 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 of the invention

[0004] The present application provides a touch display panel, a touch driving method, an electronic device and a storage medium. Various aspects involved in 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 drive electrodes arranged along a first direction, a plurality of sensing electrodes arranged along a second direction, and a touch drive unit; the touch drive unit is connected to the plurality of drive electrodes and the plurality of sensing electrodes, and is used to send scanning signals to the plurality of drive electrodes and receive sensing signals from the plurality of sensing electrodes to determine a touch position of the touch panel; the touch drive unit is further used 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 area; and adjust the frequency of the scanning signals of the 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; wherein the plurality of target drive electrodes correspond to the target display area.

[0006] As a possible implementation, the touch display panel also includes: a display driving unit, used to send a display driving signal to the pixel array to drive the pixel array to emit light; the touch driving unit is connected to the display driving unit, and determining the target display area in the touch display panel includes: determining the display refresh frequency of the multiple sub-pixels according to the frequency of the display driving signal sent by the display driving unit; and determining, according to the display refresh frequency of the multiple sub-pixels, an area in the pixel array where multiple sub-pixels with different display refresh frequencies are located as the target display area.

[0007] As a possible implementation, the scanning signal includes multiple groups of scanning waveforms, each group of the scanning waveforms includes multiple single square waves, and the frequency of the scanning signal for multiple target driving electrodes is adjusted, including: adjusting the number of single square waves in each group of the scanning waveforms, and / or adjusting the cycle time of the single square waves in each group of the scanning waveforms.

[0008] As a possible implementation method, the frequency of scanning signals of multiple target driving electrodes is adjusted so that the touch reporting rate of the target display area matches the display refresh frequency, including: adjusting the frequency of scanning signals of multiple target driving electrodes so that the touch reporting rate of the target display area is twice or more of the display refresh frequency of the target display area.

[0009] As a possible implementation, the sensing signal is a mixed frequency sensing signal generated by the multiple driving electrodes; the touch driving unit includes a filter, and the filter is used to separate the mixed frequency signal to obtain sampling information of the target display area and the display area outside the target display area.

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

[0011] In a second aspect, a touch driving method is provided, the method being applied to a touch display panel, the touch display panel 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 being connected to the plurality of driving electrodes and the plurality of sensing electrodes, and being used to send scanning signals to the plurality of touch electrodes and receive sensing signals from the plurality of induction motors, so as to determine a touch position of the touch panel; the method comprising: 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; adjusting the frequency of scanning signals of a plurality of target driving 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; wherein the plurality of target driving electrodes correspond to the target display area.

[0012] As a possible implementation, the touch display panel also includes a display driving unit, which is used to send a display driving signal to the pixel array to drive the pixel array to emit light; determining the target display area in the touch display panel includes: determining the display refresh frequency of the multiple sub-pixels according to the frequency of the display driving signal sent by the display driving unit; and determining, according to the display refresh frequency of the multiple sub-pixels, that the area in the pixel array where the multiple sub-pixels with different display refresh frequencies are located is the target display area.

[0013] As a possible implementation, the scanning signal includes multiple groups of scanning waveforms, each group of the scanning waveforms includes multiple single square waves, and the frequency rate of the scanning signal for multiple target driving electrodes includes: adjusting the number of single square waves in each group of the scanning waveforms, and / or adjusting the cycle time of the single square waves in each group of the scanning waveforms.

[0014] As a possible implementation method, the frequency of scanning signals of multiple target driving electrodes is adjusted so that the touch reporting rate of the target display area matches the display refresh frequency, including: the frequency of scanning signals of multiple target driving electrodes is adjusted so that the touch reporting rate of the target display area is twice or more of the display refresh frequency of the target display area.

[0015] As a possible implementation manner, the sensing signal is a mixed frequency sensing signal generated by the multiple driving electrodes, and 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 the display area outside the target display area.

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

[0017] In a fourth aspect, an electronic device is provided, comprising: a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory to execute the method described in the second aspect.

[0018] According to a fifth aspect, a computer-readable storage medium is provided, wherein the storage medium is used to store a computer program, and when the computer program is executed, the method described in the second aspect is implemented.

[0019] The technical solution provided in the embodiment of the present application adjusts the driving signal of the touch scanning electrode corresponding to the target display area where the display refresh rate changes, so that the touch reporting rate of the area matches the display refresh rate, thereby avoiding power consumption waste and poor experience caused by too high or too low reporting rate. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 yes Figure 1 Schematic diagram of the display layer in .

[0022] Figure 3 yes Figure 1 Schematic diagram of the structure of the touch layer in FIG.

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

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

[0025] Figure 6 It is a waveform diagram of the scanning signals in multiple driving electrodes in the target area provided by the embodiment of the present application.

[0026] Figure 7 is a schematic principle diagram of a filter in a touch drive unit provided in an embodiment of the present application.

[0027] Figure 8 It is a schematic flow chart of the scan driving method provided in an embodiment of the present application.

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

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

[0030] The technical solution provided by the embodiment of the present application relates to a touch display panel, a touch driving method, an electronic device and a storage medium. Before introducing the embodiment of the present application, the problems existing in the touch display panel and the touch driving method in the related art are described in detail with reference to the accompanying drawings.

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

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

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

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

[0035] The display driving chip 114 is connected to the plurality of scanning lines 1131 and the plurality of data lines 1132 to provide electrical signals to drive the display layer 110 to display.

[0036] The touch layer 120 is stacked with the display layer 110 to identify the user's touch operation, thereby realizing human-computer interaction. Figure 3 The structure of the touch layer in the related art and its working principle are described in more detail.

[0037] like Figure 3 As shown, the touch layer 120 includes a driving electrode array and a sensing electrode array, wherein the touch 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 generally made of a transparent conductive material, such as indium tin oxide (ITO).

[0038] The touch layer 120 also includes a touch IC (TIC) 123, which is connected to a plurality of driving electrodes 121 and a plurality of sensing electrodes 122, and is used to send a scanning signal to the driving electrodes 121 and detect sensing signals from the plurality of sensing electrodes 123, 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 above-mentioned multiple driving electrodes 121 and multiple sensing electrodes 122 are arranged vertically and crosswise, and a capacitor will be formed where the two electrodes intersect, that is, the two groups of electrodes constitute the electrodes of the capacitor respectively. When a finger touches, it will affect the coupling between the two electrodes near the touch point, thereby changing the capacitance between the two electrodes. When detecting the size of the mutual capacitance, the driving electrode sends out an excitation signal in sequence, and the sensing electrode receives the signal at the same time, and the capacitance value of all the intersection points of the electrodes can be obtained, that is, the capacitance size of the two-dimensional plane of the entire touch screen. According to the two-dimensional capacitance change 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 above-mentioned first direction can be the width direction, and the second direction is the length direction, that is, the driving electrode extends along the length direction, and the sensing electrode extends along the width direction. Of course, the embodiment of the present application does not specifically limit the direction of the above-mentioned two electrodes. The driving battery can also be set to extend in the width direction, and the sensing electrode is configured to extend in the length direction.

[0040] The specific principle of the touch layer is further explained below. When the user's finger touches the screen, the capacitance value of the mutual capacitance is detected, and the difference is obtained by subtracting the reference value from the capacitance value. When the difference exceeds the preset threshold value, it can be determined that a finger touches the screen, and the number of fingers touching the screen and the location information of the user's touch can be determined. Here, the reference value is a value set according to the untouched capacitance of the touch display panel (which can be called the background capacitance). Since the background capacitance of different areas on the touch screen may not be consistent, the reference value can usually be set to the average value of the local capacitance of multiple areas on the touch screen, or to the maximum value of the background capacitance of the above multiple areas, or to the above average value or maximum value plus a constant, or to a value greater than the above average value or maximum value, which is not limited in this application.

[0041] In the related art, the touch driving unit 123 sends scanning signals to the multiple driving electrodes 121 in the following ways: scanning a single channel one by one and scanning multiple channels in groups. The reporting rate of the touch screen is determined by the channel scanning time of the screen body and the data processing and coordinate calculation time of the touch driving unit; since the data processing time and coordinate calculation time of the touch driving unit are usually short, the key to determining the reporting rate depends on the time required to complete the scanning of all TX channels on the screen body.

[0042] As mentioned above, the reporting rate of the existing touch screen depends on the time required to scan all TX channels and complete the reporting of the coordinates on the entire screen after the touch drive unit processes the data. Therefore, the reporting rate of the entire touch screen is a fixed value at a time. In order to meet the basic touch requirements, that is, to achieve good hand tracking performance, the reporting rate is usually set to twice the display frequency. For example, when the display layer refresh rate is 60Hz, the touch reporting rate is usually set to 120Hz.

[0043] With the development of display technology, in order to achieve the purpose of reducing screen power consumption, a local refresh technical solution has emerged in the display field. That is, different refresh rates are used in different areas of the same screen. For example, in a video scenario, the refresh rate of areas outside the area where the video screen is displayed can be reduced; for example, in a split-screen application scenario, the display areas of different applications can be set to different, such as lowering the refresh rate of the area where the instant messaging application is located, and increasing the refresh rate of the area where the short video application is located, thereby reducing the overall power consumption while providing a better user experience.

[0044] In the driving scheme of the touch layer described above, no matter the refresh rate of the current display layer is a fixed value (for example, 60Hz or 120Hz), or the refresh rates of different display areas are different, the reporting rate of the entire touch layer at the same time is a fixed value. This will cause the touch reporting rate to not match the display refresh rate, as illustrated below. For example, when the touch reporting rate is 120Hz and the refresh rates of all display areas are 60Hz, the touch reporting rate matches the display refresh rate; when the refresh rate of a first display area is adjusted to 30Hz and the refresh rate of the second display area is adjusted to 120Hz, if the touch reporting rate is still maintained at 120Hz, the first display area has a "waste" of touch reporting rate, while the second display area has an insufficient reporting rate. Therefore, how to balance the high reporting rate and low power consumption of touch drive has become an urgent 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 scheme in the embodiments of the present application will be clearly and completely described below in conjunction 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 of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0046] The touch display panel 400 provided in the embodiment of the present application includes a light emitting layer 410 and a touch panel 420 which are stacked. Figure 4 and Figure 5 They are schematic structural diagrams of the light-emitting layer and the touch layer respectively.

[0047] like Figure 4 As shown, the light emitting layer 410 includes a pixel array 411, and the pixel array 411 includes a plurality of sub-pixels arranged in an array. The plurality of sub-pixels can emit light under the drive of a display driving signal to perform display. The specific principle of the light emitting layer 410 is not described here in detail, and can be referred to the above description of Figure 2 Description.

[0048] The touch panel 420 is disposed above the light emitting layer 410 along the light emitting direction of the light emitting layer 410. In some embodiments, the touch panel 420 may be bonded to the light emitting layer 410 by transparent optical adhesive OCA.

[0049] like Figure 5 As shown, 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 to the plurality of driving electrodes 421 and the plurality of sensing electrodes 422 , and is used to send scanning signals to the plurality of driving electrodes 421 and receive sensing signals from the plurality of sensing electrodes 422 , so as to determine the touch position of the touch panel 420 .

[0051] There are many ways for the touch drive unit 423 to send scan signals to the multiple drive electrodes 421. For example, the touch drive unit can send scan signals to each drive electrode in turn, receive the sensing signal of the sensing electrode at the same time, and determine the touch position according to the received sensing signal. For another example, the multiple drive electrodes 421 can also be grouped so that each group of drive electrodes includes a first number of drive electrodes, and the touch drive unit is used to send scan signals to all drive electrodes in a group of drive electrodes at the same time, and send drive signals to the multiple groups of drive electrodes in turn according to the order of the multiple groups of drive electrodes. The embodiment of the present application does not specifically limit the scanning method of the drive signal.

[0052] The driving control unit in the embodiment of the present application is also used to: determine a target display area (such as Figure 4 The target display area has a refresh rate different from the refresh rate of the display area outside the target area. For example, the area is the area where the game screen is displayed in the frequency division scenario, and the area outside the target area displays the instant messaging software.

[0053] After determining the target display area, the driving unit is also used to: adjust the frequency of the scanning signals of multiple target driving electrodes according to the display refresh frequency of the target display area, so that the touch reporting rate of the target display area matches the display refresh frequency; wherein the multiple target driving electrodes correspond to the target display area.

[0054] Still Figure 4 and Figure 5 For example, the target display area in the touch display panel is a rectangular area formed by pixels in rows a1-an and rows b1-bm, and the display refresh rate of this area is different from that of other areas; correspondingly, the multiple target driving electrodes are the fourth to seventh driving electrodes (also called TX4-TX7 channels).

[0055] It should be noted that Figure 5 The 10 driving electrodes shown in the figure are only examples and do not constitute a limitation on the technical solution of the present application. The embodiments of the present application do not specifically limit the number of driving electrodes and sensing electrodes.

[0056] The technical solution provided in the embodiment of the present application adjusts the driving signal of the touch scanning electrode corresponding to the target display area where the display refresh rate changes, so that the touch reporting rate of the area matches the display refresh rate, thereby avoiding power consumption waste and poor experience caused by too high or too low reporting rate.

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

[0058] The touch driving unit 423 is also connected to the display driving unit 431. The above-mentioned determination of the target display area in the touch display panel includes:

[0059] According to the frequency of the display driving signal sent by the display driving unit, the display refresh frequency of multiple sub-pixels in the pixel array 411 is determined, and, according to the display refresh frequency of the multiple sub-pixels, the area where multiple sub-pixels with different refresh frequencies in the pixel array 411 are located is determined as the target display area.

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

[0061] Based on this, the frequency of adjusting the scanning signals of multiple target driving electrodes in the embodiment of the present application can be: adjusting the number of single square waves in each group of scanning waveforms; and / or adjusting the cycle time of a single square wave in each group of scanning waveforms.

[0062] It should be understood that the display refresh rate of the target display area in the embodiment of the present application is different from the display refresh rate of the area outside the target display area, including: the display refresh rate of the target display area is greater than the display refresh rate of the area outside the target display area, or the display refresh rate of the target display area is less than the display refresh rate of the area outside the target display area. In the above two cases, in order to match the reporting rate with the display refresh rate, the frequency of the scanning signal of the target driving electrode in the embodiment of the present application includes increasing and decreasing the frequency of the scanning signal to increase or decrease the reporting rate.

[0063] The following is a detailed explanation of the method of adjusting the scanning signal by taking the solution of improving the reporting rate as an example. Figure 6 The waveform diagram of the scanning signal is shown, which includes scanning signal A-scanning signal D. Among them, scanning signal A is a driving signal of a non-target driving electrode, and scanning signal B-scanning signal D are several implementation modes of scanning signals of a target driving electrode.

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

[0065] There are several ways to increase the scanning signal of the target drive electrode:

[0066] (1) Reduce the number of single square waves in each group of scanning waveforms in the scanning signal from four to three, and keep the cycle time of each single square wave unchanged, and obtain Figure 6 In the scanning signal B, the scanning time of each group of scanning waveforms in the scanning signal is reduced from T1 to T2, so that the touch reporting rate is improved.

[0067] (2) It is inconvenient to keep the number of single square waves in each set of scanning waveforms. Reduce the cycle time of a single square wave from t1 to t2, and obtain Figure 6 In the scanning signal C, the scanning time of each group of scanning waveforms is reduced from T1 to T3, thereby improving the touch reporting rate.

[0068] (3) Simultaneously reduce the number of single square waves and the cycle time of a single square wave in each set of scanning waveforms. For example, reduce the number of single square waves to three and reduce the cycle time to t2, and obtain Figure 6In the scanning signal D, in the scanning signal D, the scanning time of each group of waveforms is less than any one of the above-mentioned scanning waveforms A to C.

[0069] It should be noted that the above only describes the solution of the present application in detail by taking the improvement of the reporting rate as an example. In the solution of the embodiment of the present application, the scanning time of each group of scanning waveforms can be increased by increasing the number of single square waves and / or increasing the cycle time of a single square wave, thereby achieving the purpose of reducing the reporting rate.

[0070] In some embodiments, the above-mentioned scanning frequency can be adjusted by means of a MUX switch and a frequency selector in the touch driving unit. Specifically, after a plurality of target driving electrodes are determined according to the above-mentioned target display area, the frequency of the scanning signal is determined by the frequency selector, and the signal is input into the plurality of target driving electrodes by means of the MUX switch, thereby achieving the adjustment of the scanning signal frequency.

[0071] In some embodiments, the aforementioned adjusting the frequencies of the scanning signals of the plurality of target driving electrodes so that the touch reporting rate of the target display area matches the display refresh frequency includes:

[0072] Adjust the frequency of the scanning signals of the multiple target drive electrodes so that the touch 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 120Hz, and the touch reporting rate is set to 240Hz; when the display refresh rate of the target area in the touch display panel is reduced to 20Hz, according to the scheme of the present application, it is necessary to reduce the touch reporting rate of the area to achieve the effect of reducing power consumption. At this time, the touch reporting rate of the area can be set to twice or more of the display refresh rate, that is, set to 40Hz or more, which can meet the requirements for touch control under the premise of reducing power consumption.

[0073] As mentioned above, the scanning frequency of the multiple target driving electrodes corresponding to the target display area is different from that of the driving electrodes in other areas. At this time, the sensing signal in the sensing electrode is a mixed frequency sensing signal generated by the multiple 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 control driving unit further includes a filter, and the filter is used to separate the mixed frequency signal to obtain sampling information of the target display area and the display area other than the target display area.

[0075] Specifically, Figure 7As shown, when a touch operation occurs, the scanning signal with a frequency of F1 in the target display area and the signal with a frequency of F2 in the area outside the target display area are coupled through mutual capacitance MC to generate a corresponding sensing signal. The sensing signal is received and processed by the front-end analog amplifier AFE in the touch drive unit to become a mixed sensing signal. Then, a filter NBF composed of a specific capacitor and resistor circuit is provided inside the touch drive unit. The filter NBF is a narrow bandwidth filter, which can pass the signal of a pre-set specific frequency component in the received signal, while greatly attenuating or suppressing the signal of other frequency components. Among them, filtering the signal is the premise and basis of signal processing. The main purpose of filtering is to filter out useless interference signals or signals irrelevant to the target signal, and then obtain the signal required by the system.

[0076] The touch drive unit filters the received analog electrical signal (specific voltage amplitude / certain frequency) by passing the signal of specific frequency through the filter NBF inside the touch drive unit, thereby intercepting the desired part from the numerous received signals, including the target signal / various noise signals NS. It can then identify whether the corresponding sensing 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] Typically, the analog signal obtained after analog filtering inside the touch drive unit is converted by an analog-to-digital converter ADC to obtain a digital signal (for example, 10101, or 10111), and after digital filtering by a digital filter DF, the data required for calculating the touch coordinates of the target inside the touch drive unit is obtained.

[0078] The core of digital filtering is the digital signal processor (DSP), and the DSP unit is set inside the touch drive unit. Digital filtering is an algorithm or device composed of digital multipliers, adders and other units to process the input discrete digital signal code. Processing is to calculate according to a pre-programmed program.

[0079] Combination of the above Figure 1-Figure 7 The device embodiment of the present application is described in detail. Figure 8 , the method embodiment of the present application is described in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the part not described in detail can refer to the previous device embodiment.

[0080] Figure 81 is a schematic flow chart of a touch driving method provided in an embodiment of the present application, the method is applied to a touch display panel, the touch display panel can be the touch display panel in any of the embodiments above, the touch display panel comprises: 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 to the plurality of driving electrodes and the plurality of sensing electrodes, and is used to send scanning signals to the plurality of touch electrodes and receive sensing signals from the plurality of induction motors, so as to determine a touch position of the touch panel.

[0081] Figure 8 The method includes steps S810-S820.

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

[0083] In step S820, the frequencies of scanning signals of multiple target drive electrodes are adjusted according to the refresh frequency of the target display area so that the touch reporting rate of the target display area matches the display refresh frequency; wherein the multiple target drive electrodes correspond to the target display area.

[0084] Optionally, the touch display panel also includes a display driving unit for sending a display driving signal to the pixel array to drive the pixel array to emit light; determining the target display area in the touch display panel includes: determining a refresh frequency of the multiple sub-pixels according to the frequency of the display driving signal sent by the display driving unit; and determining, according to the refresh frequency of the multiple sub-pixels, a region in the pixel array where multiple sub-pixels with different refresh frequencies are located as the target display area.

[0085] Optionally, the scanning signal includes multiple groups of scanning waveforms, each group of the scanning waveforms includes multiple single square waves, and the frequency rate of the scanning signal for multiple target driving electrodes includes: adjusting the number of single square waves in each group of the scanning waveforms, and / or adjusting the cycle time of the single square waves in each group of the scanning waveforms.

[0086] Optionally, the step of adjusting the frequency of scanning signals of the plurality of target driving electrodes so that the touch reporting rate of the target display area matches the display refresh frequency includes: adjusting the frequency of scanning signals of the plurality of target driving electrodes so that the touch reporting rate of the target display area is twice or more of the display refresh frequency of the target display area.

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

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

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

[0090] The embodiment of the present application also provides an electronic device, Fig.10 is a schematic structural diagram of the electronic device 1000, Fig.10 The dotted line in the figure indicates that the unit or module is optional. The electronic device is used to implement the method described in the above method embodiment, or the electronic device can also be a chip or integrated circuit that can implement the method of the above embodiment.

[0091] Fig.10 The electronic device 1000 in the embodiment may include one or more processors 1010. The processor 1010 may support the electronic device 1000 to implement the method described in the method embodiment of the foregoing text. The processor 1010 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor 1010 may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0092] The electronic device 1000 may further include one or more memories 1020. The memory 1020 stores a program, which can be executed by the processor 1010, so that the processor 1010 executes the method described in the above method embodiment. The memory 1020 may be independent of the processor 1010 or integrated in the processor 1010.

[0093] The electronic device 1000 may further include a transceiver 1030. The processor 1010 may communicate with other devices or chips through the transceiver 1030. For example, the processor 1010 may transmit and receive data with other devices or chips through the transceiver 1030.

[0094] The application embodiment also provides a chip, including a processor, which can be used to call and run a computer program from a memory, so that a device equipped with the chip performs the method described in the above method embodiment. It is understood that the processor can be any type of processor mentioned above. It is understood that the memory can be independent of the chip or integrated in the chip.

[0095] An embodiment of the present application further provides a computer-readable storage medium, wherein the storage medium stores executable code, and when the executable code is executed, the method described in any of the above embodiments is implemented.

[0096] The embodiment of the present application also provides 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 embodiment of the present application, and the program enables the computer to execute the method in each embodiment of the present application.

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

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

[0099] In the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship of indication and being indicated, configuration and being configured, etc.

[0100] In the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0101] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0102] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0103] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

[0105] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may 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 may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[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 who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A touch display panel, characterized in that: include: a light emitting layer including 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 to the plurality of driving electrodes and the plurality of sensing electrodes, and is used to send scanning signals to the plurality of driving electrodes and receive sensing signals from the plurality of sensing electrodes, so as to determine a touch position of the touch panel; The touch driving unit is further used 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 area; According to the display refresh frequency of the target display area, the frequency of the scanning signal of the multiple target drive electrodes is adjusted to make the touch reporting rate of the target display area match the display refresh frequency; wherein the multiple target drive electrodes correspond to the target display area.

2. The touch display panel according to claim 1, characterized in that: Also includes: A display driving unit, used for sending a display driving signal to the pixel array to drive the pixel array to emit light; The touch driving unit is connected to the display driving unit, and the determining of the target display area in the touch display panel includes: Determining a display refresh frequency of the plurality of sub-pixels according to the frequency of the display driving signal sent by the display driving unit; According to the display refresh frequencies of the plurality of sub-pixels, a region where the plurality of sub-pixels with different display refresh frequencies are located in the pixel array is determined as the target display region.

3. The touch display panel according to claim 1, characterized in that: The scanning signal includes a plurality of groups of scanning waveforms, each group of the scanning waveforms includes a plurality of single square waves, and the frequency of the scanning signal of the plurality of target driving electrodes is adjusted, including: adjusting the number of single square waves in each set of the scanning waveforms, and / or, The cycle time of a single square wave in each group of the scanning waveforms is adjusted.

4. The touch display panel according to claim 1, characterized in that: The step of adjusting the frequencies of the scanning signals of the plurality of target driving electrodes so that the touch reporting rate of the target display area matches the display refresh frequency includes: The frequencies of the scanning signals of the plurality of target driving electrodes are adjusted so that the touch reporting rate of the target display area is twice or more of the display refresh frequency of the target display area.

5. The touch display panel according to any one of claims 1 to 4, characterized in that: The sensing signal is a mixed frequency sensing signal generated by the plurality of driving electrodes; The touch control driving unit includes a filter, and the filter is used to separate the mixed frequency signal to obtain sampling information of the target display area and the display area other than the target display area.

6. The touch display panel according to claim 5, characterized in that: The touch control driving unit receives the mixed frequency sensing signal at fixed time intervals.

7. A touch driving method, the method being applied to a touch display panel, the touch display panel comprising: a light emitting layer, including 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 to the plurality of driving electrodes and the plurality of sensing electrodes, and is used to send scanning signals to the plurality of touch electrodes and receive sensing signals from the plurality of induction motors to determine a touch position of the touch panel; Characterized in that the method comprises: 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; According to the display refresh frequency of the target display area, the frequency of the scanning signal of the multiple target drive electrodes is adjusted to make the touch reporting rate of the target display area match the display refresh frequency; wherein the multiple target drive electrodes correspond to the target display area.

8. The method according to claim 7, characterized in that The touch display panel further includes a display driving unit, which is used to send a display driving signal to the pixel array to drive the pixel array to emit light; The determining of the target display area in the touch display panel includes: Determining a display refresh frequency of the plurality of sub-pixels according to the frequency of the display driving signal sent by the display driving unit; According to the display refresh frequencies of the plurality of sub-pixels, a region where the plurality of sub-pixels with different display refresh frequencies are located in the pixel array is determined as the target display region.

9. The method according to claim 7, characterized in that: The scanning signal includes a plurality of groups of scanning waveforms, each group of the scanning waveforms includes a plurality of single square waves, and the frequency rate of the scanning signal of the plurality of target driving electrodes is adjusted, including: adjusting the number of single square waves in each set of the scanning waveforms, and / or, The cycle time of a single square wave in each group of the scanning waveforms is adjusted.

10. The method according to claim 7, characterized in that The step of adjusting the frequencies of the scanning signals of the plurality of target driving electrodes so that the touch reporting rate of the target display area matches the display refresh frequency includes: The frequency of the scanning signals of the plurality of target driving electrodes is adjusted so that the touch reporting rate of the target display area is twice or more of the display refresh frequency of the target display area.

11. The method according to any one of claims 7 to 10, characterized in that: The sensing signal is a mixed frequency sensing signal generated by the plurality of driving electrodes, and the method further includes: The mixed frequency sensing signal is filtered to separate the mixed frequency signal to obtain sampling information of the target display area and the display area other than the target display area.

12. An electronic device, characterized in that: It comprises a touch display panel as claimed in any one of claims 1 to 6.

13. An electronic device, characterized in that: include: The system comprises a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory to execute the method according to any one of claims 7 to 11.

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

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