Touch display method, electronic device and readable storage medium

Abstract

The application discloses a touch display method, an electronic device and a readable storage medium, and belongs to the technical field of display application. The method is applied to a touch display panel, the touch display panel comprises a display screen and a touch layer arranged on a substrate of the display screen, the touch layer comprises a driving line and a receiving line which are arranged in a cross mode, and the method is characterized in that the method comprises the following steps: during a display period of a picture displayed by the display screen, the receiving line is grounded, so that the grounded receiving line forms a shielding layer for shielding radio frequency radiation of the display screen; during a blanking period between two adjacent pictures, the grounding of the receiving line is removed, and the receiving line is controlled to perform touch detection.

Description

Technical Field

[0001] This application relates to the field of display application technology, and in particular to a touch display method, electronic device and readable storage medium. Background Technology

[0002] With the continuous development of display technology, touch screens have been widely used in smartphones, automotive displays, and industrial control. To achieve thinner and lighter display modules with higher light transmittance, touch display architectures such as on-cell and in-cell touch have emerged. On-cell and in-cell structures typically have thin insulating layers; adding a shielding layer significantly increases parasitic capacitance, degrading touch detection performance. However, abandoning the shielding structure affects the product's electromagnetic compatibility. Therefore, existing technologies face the challenge of balancing electromagnetic compatibility and touch sensitivity. Summary of the Invention

[0003] This application provides a touch display method, an electronic device, and a readable storage medium to solve the problem in the prior art that it is difficult to balance electromagnetic compatibility and touch sensitivity.

[0004] In a first aspect, embodiments of this application provide a touch display method applied to a touch display panel. The touch display panel includes a display screen and a touch layer disposed on a substrate of the display screen. The touch layer includes interleaved driving lines and receiving lines. The method includes:

[0005] During the display period of the screen, the receiving line is grounded so that the grounded receiving line forms a shielding layer that shields the radio frequency radiation of the screen.

[0006] During the blanking period between two adjacent frames, the grounding of the receiving line is released, and the receiving line is controlled to perform touch detection.

[0007] Secondly, embodiments of this application provide an electronic device, including a touch display panel and a control unit; the touch display panel includes a display screen and a touch layer; the display screen includes a pixel array and a scanning driving circuit, the scanning driving circuit is electrically connected to the pixel array, and is used to scan and drive the pixel array to display an image according to a preset timing sequence; the touch layer is disposed on the substrate of the display screen, and the touch layer includes driving lines and receiving lines arranged in a cross manner;

[0008] The control unit is configured to: control the receiving line to be grounded during the display period of the screen display, so that the grounded receiving line forms a shielding layer that shields the radio frequency radiation of the screen display; and release the grounding of the receiving line during the blanking period between two adjacent frames, and control the receiving line to perform touch detection.

[0009] Thirdly, embodiments of this application provide an electronic device, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the touch display method as described in the first aspect.

[0010] Fourthly, embodiments of this application provide a readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the touch display method as described in the first aspect.

[0011] This application provides a touch display method applied to a touch display panel. The touch display panel includes a display screen and a touch layer disposed on a substrate of the display screen. The touch layer includes interleaved driving lines and receiving lines. The method includes: during the display period of the screen displaying an image, controlling the receiving lines to ground, so that the grounded receiving lines form a shielding layer that shields the radio frequency radiation of the display screen; during the blanking period between two adjacent frames, releasing the grounding of the receiving lines and controlling the receiving lines to perform touch detection. Thus, since the grounded receiving lines can shield the radio frequency radiation of the display screen, the electromagnetic compatibility of the touch display panel is effectively improved. Simultaneously, since the receiving lines of the touch layer itself act as a shielding layer, there is no need to add an additional physical shielding structure, avoiding the increase of parasitic capacitance. Therefore, while enhancing anti-interference capability, touch sensitivity is maintained, achieving a balance between electromagnetic compatibility and touch sensitivity.

[0012] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 This is a structural diagram of a touch display panel in an electronic device provided in an embodiment of this application;

[0015] Figure 2 This is a flowchart illustrating a touch display method provided in an embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the overall execution flow of a touch display method provided in an embodiment of this application;

[0017] Figure 4 This is a schematic flowchart illustrating the working state detection of the scanning drive circuit in a touch display method provided in this application embodiment;

[0018] Figure 5 This is a structural diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0019] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] The touch display method provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0022] Reference Figure 1 and Figure 2 This application provides a touch display method applied to a touch display panel 10. The touch display panel 10 includes a display screen 11 and a touch layer 12 disposed on the substrate of the display screen. The touch layer 12 includes interleaved driving lines and receiving lines. The method includes:

[0023] Step 201: During the display period of the screen, control the receiving line to be grounded so that the grounded receiving line forms a shielding layer to shield the radio frequency radiation of the screen.

[0024] In this embodiment, by controlling the receiving line to be grounded during screen display, a physical shielding layer is constructed using the conductivity of the receiving line. In this way, the receiving line can directly absorb the radio frequency radiation generated during the operation of the display screen, thereby improving the electromagnetic compatibility of the display screen.

[0025] It should be understood that the display period of the above-mentioned display screen can be the time interval in which the scanning driving circuit scans and drives the pixel array to display the image within a frame.

[0026] It should be noted that the aforementioned single frame can be understood as a single image displayed on the screen, containing the brightness and color data of all pixels on the screen. The screen presents a smooth dynamic visual effect by rapidly and continuously displaying multiple frames at a fixed refresh rate. The aforementioned pixel array can be understood as a matrix-like collection of pixels distributed within the display area of ​​the screen, consisting of rows and columns. Each pixel has the ability to independently display brightness and color, and all pixels work together to piece together a complete image. The aforementioned scan drive circuit can be understood as a control component that provides drive signals to the aforementioned pixel array. It is responsible for generating timing control signals and data signals, activating the aforementioned pixels sequentially according to a preset order, thereby displaying a complete image on the aforementioned screen. Because the aforementioned scan drive circuit outputs electrical signals at a high frequency during the display period, the aforementioned screen generates radio frequency radiation.

[0027] It should be understood that the above-mentioned preset order can be row-by-row or column-by-column, and no further restrictions are made here.

[0028] Step 202: During the blanking period between two adjacent frames, disconnect the grounding of the receiving line and control the receiving line to perform touch detection.

[0029] In this embodiment, by removing the grounding of the receiving line during the blanking period, the receiving line resumes its signal acquisition state. Thus, the receiving line can capture signal changes caused by external touch operations, achieving recognition of touch actions during the blanking period.

[0030] It should be understood that the blanking period between two adjacent frames can be the time window after the display screen finishes displaying one frame and before it starts scanning to drive the next frame.

[0031] It should be noted that the aforementioned touch detection can be understood as the process of processing touch signals to determine the touch position. The aforementioned receiving line is configured as a signal receiver during the aforementioned blanking period. When the touch object touches the display screen, it changes the capacitance value on the aforementioned receiving line. The aforementioned control unit can determine the position information of the touch object by reading the signal changes on the aforementioned receiving line. Of course, in other embodiments, the capacitance value on the aforementioned receiving line can also be changed by the touch object approaching but not touching the display screen.

[0032] It should be understood that the aforementioned touch object can be a finger, stylus, or other object, without further limitation here.

[0033] This application provides a touch display method applied to a touch display panel. The touch display panel includes a display screen and a touch layer disposed on a substrate of the display screen. The touch layer includes interleaved driving lines and receiving lines. The method includes: during the display period of the screen displaying an image, controlling the receiving lines to ground, so that the grounded receiving lines form a shielding layer that shields the radio frequency radiation of the display screen; during the blanking period between two adjacent frames, releasing the grounding of the receiving lines and controlling the receiving lines to perform touch detection. Thus, since the grounded receiving lines can shield the radio frequency radiation of the display screen, the electromagnetic compatibility of the touch display panel is effectively improved. Simultaneously, since the receiving lines of the touch layer itself act as a shielding layer, there is no need to add an additional physical shielding structure, avoiding the increase of parasitic capacitance. Therefore, while enhancing anti-interference capability, touch sensitivity is maintained, achieving a balance between electromagnetic compatibility and touch sensitivity.

[0034] Optionally, in some embodiments, the method further includes: controlling the high-speed clock signal of the display screen to stop working during the blanking period.

[0035] In this embodiment, by controlling the high-speed clock signal of the display screen to stop operating during the blanking period, the main source of radio frequency radiation from the display screen is cut off. Thus, during the blanking period, the high-speed clock signal is in a silent state, minimizing electromagnetic interference background and providing a low-interference environment for touch detection.

[0036] It should be noted that the aforementioned high-speed clock signal can be understood as the reference clock signal that drives the aforementioned display screen to output pixel data. This signal has an extremely high frequency and is one of the core noise sources that generate radio frequency radiation from the aforementioned display screen. Stopping the aforementioned high-speed clock signal during the aforementioned blanking period can effectively avoid invalid high-frequency signal output and the radio frequency radiation it causes.

[0037] Optionally, in some embodiments, stopping the high-speed clock signal can be achieved by completely shutting down the high-speed clock signal or switching it to a low-frequency mode; no further limitations are made here.

[0038] Optionally, in some embodiments, controlling the receiving line to perform touch detection includes:

[0039] The drive circuit is controlled to output a first drive signal;

[0040] The second driving signal is received through the receiving line, wherein the second driving signal is the signal after the first driving signal is coupled by mutual capacitance between the driving line and the receiving line and is affected by touch operation;

[0041] The touch position is determined based on the second drive signal.

[0042] In this embodiment, the first driving signal can be understood as an excitation signal applied to the driving circuit, typically an alternating electrical signal, used to establish a stable electric field in the space surrounding the driving circuit. The second driving signal can be understood as a response signal sensed by the receiving circuit through mutual capacitance coupling. When a touch object intervenes, the distribution of the electric field changes, causing the value of the coupling capacitance to change, and thus the characteristics of the second driving signal also change. Through the mutual capacitance coupling between the driving circuit and the receiving circuit, the electric field disturbance caused by the intervention of the touch object can be sensed. In this way, the touch operation is converted into the characteristics of the second driving signal for detection, achieving accurate identification of the touch position and improving the sensitivity and accuracy of touch detection.

[0043] It should be understood that the aforementioned second driving signal is the signal resulting from the mutual capacitance coupling between the aforementioned driving line and the aforementioned receiving line of the aforementioned first driving signal, and is also affected by touch operation. Specifically, the intervention of a touch object will change the original electric field distribution, thereby causing a change in the mutual capacitance value, which in turn causes a corresponding change in the aforementioned second driving signal coupled to the aforementioned receiving line; the change in the aforementioned electric field distribution and the change in the mutual capacitance value are physically corresponding to each other, both reflecting the degree of influence of touch operation on the coupled signal.

[0044] Optionally, in some embodiments, determining the touch position based on the second driving signal includes:

[0045] The second driving signal is amplified.

[0046] Based on the charge change of the amplified second driving signal, determine the target location where the capacitance value changes;

[0047] The target location is determined as the touch location.

[0048] In this embodiment, the amplification of the second driving signal can be understood as converting the weak electrical signal received by the receiving line into a signal with a larger amplitude to enhance signal strength and improve anti-interference capability. For example, in some embodiments, after receiving the second driving signal, the receiving line inputs the second driving signal to a signal amplification circuit; the signal amplification circuit includes an operational amplifier or a transistor amplification unit, used to amplify the weak second driving signal and output the amplified second driving signal to the controller, which determines the corresponding touch position based on the amplified second driving signal.

[0049] It should be understood that the aforementioned change in charge can be interpreted as the change in the amount of charge induced at the receiving line end, which is proportional to the change in mutual capacitance.

[0050] Optionally, in some embodiments, the amplified second driving signal can be a sine wave signal; when no touch operation occurs, the amplitude and phase of the sine wave signal remain relatively stable; when a touch operation occurs, the touch object causes a change in the capacitance of the corresponding touch area, thereby causing a change in the amplitude or phase of the sine wave. The controller can determine whether a touch operation has occurred based on the change in the amplitude or phase of the sine wave signal, thereby further determining the corresponding touch position.

[0051] Optionally, in some embodiments, the receiving line is configured to correspond to the pixel rows of the pixel array of the display screen, and the receiving line covers all the pixel rows;

[0052] The control of grounding the receiving line includes:

[0053] When the scanning drive circuit of the display screen scans to the first area of ​​the pixel array, the receiving line corresponding to the first area is grounded.

[0054] When the first area is finished being displayed and the scanning drive circuit enters the scanning of the second area, the grounding of the receiving line corresponding to the first area is released, and the grounding of the receiving line corresponding to the second area is restored.

[0055] In this embodiment, the first region and the second region can be understood as adjacent scanning regions divided according to the scanning order in the pixel array. The scanning driving circuit sequentially scans the first region and the second region according to a preset order to complete the screen display. Removing the grounding of the receiving line corresponding to the first region can be understood as follows: after the scanning driving circuit finishes scanning the first region and enters the second region, the receiving line corresponding to the first region no longer remains grounded but returns to the touch detection state. By synchronously controlling the grounding state of the receiving line with the scanning position of the scanning driving circuit, dynamic adjustment of the shielding area is achieved. Thus, the area being scanned generates strong radio frequency radiation, and the corresponding receiving line is grounded, thereby shielding the radio frequency radiation of that local area; while the unscanned area has lower radio frequency radiation interference, and the corresponding receiving line is in a non-grounded state. These non-grounded receiving lines synchronously perform touch detection, thereby achieving a balance between electromagnetic compatibility and touch sensitivity during the display period.

[0056] It should be noted that the above-mentioned receiving line and the pixel row of the above-mentioned pixel array are set to correspond to each other in terms of physical layout. This means that the above-mentioned receiving line and the pixel row have established a one-to-one spatial mapping relationship in physical layout. This allows the scanning driving circuit to accurately correspond to the grounded receiving line covering a specific pixel row when scanning it, thereby enhancing the electromagnetic shielding effect.

[0057] Optionally, in some embodiments, the method further includes:

[0058] The pixel rows of the pixel array and the receiving line are combined into multiple regions in a multi-row combination manner;

[0059] The division of the region is determined based on the response time of the touch detection and the refresh frequency of the pixel array.

[0060] In this embodiment, the pixel rows of the pixel array and the receiving lines are divided into multiple regions in a multi-row combination manner. This can be understood as merging multiple adjacent pixel rows and their corresponding receiving lines into one region, so that all lines in the region can synchronously perform ground shielding or touch detection state switching at the same time. By performing ground shielding or touch detection state switching in batches through region division instead of performing ground shielding or touch detection state switching row by row, the requirements on the processing speed of the touch chip can be reduced.

[0061] It should be noted that, in the embodiments of this application, the overall execution flow diagram is as follows: Figure 3 As shown:

[0062] First, step 301 is executed, which divides the pixel rows of the pixel array and the receiving line into multiple regions in a multi-row combination manner;

[0063] Then, step 302 is executed: during the display period of the screen display, when the scanning driving circuit of the screen displays scans to the first area of ​​the pixel array, the receiving line corresponding to the first area is grounded.

[0064] Next, step 303 is executed. When the first area is finished being displayed and the scanning driving circuit enters the scanning of the second area, the grounding of the receiving line corresponding to the first area is released and the receiving line corresponding to the second area is grounded.

[0065] Since the pixel rows of the pixel array and the receiving line are divided into multiple regions in a multi-row combination manner, all regions can be scanned sequentially based on steps 302 and 303. That is, steps 302 and 303 will be executed cyclically until all regions are scanned. After all regions are scanned, step 304 is executed.

[0066] Step 304: During the blanking period between two adjacent frames, disconnect the grounding of the receiving line and control the receiving line to perform touch detection.

[0067] It should be understood that the size of the aforementioned regions needs to comprehensively consider the response time of touch detection and the refresh rate of the pixel array to ensure that the detection task is completed within a limited time window. It should be noted that the size of the aforementioned regions is inversely proportional to the response time of touch detection. That is, when the time required for the touch chip to sample and process the second driving signal is long, the region size usually needs to be reduced to shorten the dwell time of the scanning position in a single region, thus providing a longer effective window for touch detection; conversely, when the response time is short, the region size can be appropriately increased. At the same time, the size of the aforementioned regions is inversely proportional to the refresh rate of the pixel array. That is, when the refresh rate is high, the single-frame period is shortened, and the time window for touch detection is compressed, so the size of each region also needs to be reduced to ensure that touch detection of all regions is completed within a limited time; conversely, when the refresh rate is low, the single-frame time is more generous, and the region size can be appropriately increased.

[0068] Optionally, in some embodiments, the receiving line is selectively connected to the touch chip or the ground terminal via a switching switch;

[0069] The control of grounding the receiving line includes: controlling the switching switch to connect the receiving line to the grounding terminal;

[0070] The step of controlling the receiving line to perform touch detection includes: controlling the switching switch to connect the receiving line to the touch chip.

[0071] In this embodiment, by introducing the aforementioned switching switch, flexible switching between different functional states of the receiving line is achieved. Thus, the receiving line can form a shielding layer based on the scanning timing of the scanning drive circuit, or connect to the touch chip to receive the second driving signal. This design achieves time-division multiplexing of the receiving line.

[0072] It should be understood that the aforementioned switch can be an electronic switching element, such as an analog switch, a transmission gate circuit, or a transistor switch array. The aforementioned switch is controlled by the scan timing signal of the aforementioned scan drive circuit, and the operation timing of the aforementioned switch is synchronized with the scan timing of the aforementioned scan drive circuit.

[0073] To better understand this application, the specific implementation process of this application will be described below through an embodiment.

[0074] like Figure 4 As shown, the process includes the following:

[0075] Step S1: Obtain the timing signal output by the scanning drive circuit and detect the current working status of the display screen in real time.

[0076] Step S2: Determine whether the current scan timing is within the blanking region based on the timing signal.

[0077] Step S3: If it is determined that the current area is within the blanking region (Y), the touch receiving line is disconnected from the ground and switched to the working state, and the touch function is enabled at the same time.

[0078] Step S4: If it is determined that the current area is not in the blanking area (N), that is, in the display area, then the touch receiving line is switched to the ground state and the touch function is disabled.

[0079] The process returns to step S1 to re-execute the above judgment and control process.

[0080] This application embodiment also provides an electronic device, which includes: a touch display panel 10 and a control unit (not shown in the figure); the touch display panel 10 includes a display screen 11 and a touch layer 12; the display screen 11 includes a pixel array and a scanning driving circuit, the scanning driving circuit is electrically connected to the pixel array, and is used to scan and drive the pixel array to display an image according to a preset timing sequence; the touch layer 12 is disposed on the substrate of the display screen 11, and the touch layer 12 includes driving lines and receiving lines arranged in a cross pattern;

[0081] The control unit is configured to: control the receiving line to be grounded during the display period of the screen display, so that the grounded receiving line forms a shielding layer that shields the radio frequency radiation of the screen display; and release the grounding of the receiving line during the blanking period between two adjacent frames, and control the receiving line to perform touch detection.

[0082] Optionally, in some embodiments, the control unit is further configured to: detect the current timing signal and determine whether the working state of the display screen is in the aforementioned blanking period;

[0083] The control unit, based on the timing signal, cyclically controls the grounding of the receiving line and performs touch detection.

[0084] The electronic device in this application embodiment can be a device, or a component, integrated circuit, or chip in a terminal. The device can be a mobile electronic device or a non-mobile electronic device. For example, a mobile electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc., while a non-mobile electronic device can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. The embodiments of this application do not impose specific limitations.

[0085] The electronic device in this application embodiment can be a device with an operating system. The operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system.

[0086] The electronic device provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0087] Optionally, such as Figure 5 As shown, this application embodiment also provides an electronic device 500, including a processor 501, a memory 502, and a program or instructions stored in the memory 502 and executable on the processor 501. When the program or instructions are executed by the processor 501, they implement the various processes of the above-described touch display method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0088] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0089] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described touch display method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0090] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0091] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described touch display method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0092] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0093] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described touch display method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0094] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0095] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0096] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A touch display method applied to a touch display panel, the touch display panel comprising a display screen and a touch layer disposed on a substrate of the display screen, the touch layer comprising interleaved driving lines and receiving lines, characterized in that, The method includes: During the display period of the screen, the receiving line is grounded so that the grounded receiving line forms a shielding layer that shields the radio frequency radiation of the screen. During the blanking period between two adjacent frames, the grounding of the receiving line is released, and the receiving line is controlled to perform touch detection.

2. The touch display method according to claim 1, characterized in that, The method further includes: During the blanking period, the high-speed clock signal controlling the display screen stops working.

3. The touch display method according to claim 1, characterized in that, The control of the receiving line to perform touch detection includes: The drive circuit is controlled to output a first drive signal; The second driving signal is received through the receiving line, wherein the second driving signal is the signal after the first driving signal is coupled by mutual capacitance between the driving line and the receiving line and is affected by touch operation; The touch position is determined based on the second drive signal.

4. The touch display method according to claim 1, characterized in that, The receiving line is configured to correspond to the pixel rows of the pixel array of the display screen, and the receiving line covers all the pixel rows; The control of grounding the receiving line includes: When the scanning drive circuit of the display screen scans to the first area of ​​the pixel array, the receiving line corresponding to the first area is grounded. When the first area is finished being displayed and the scanning drive circuit enters the scanning of the second area, the grounding of the receiving line corresponding to the first area is released, and the grounding of the receiving line corresponding to the second area is restored.

5. The touch display method according to claim 4, characterized in that, The method further includes: The pixel rows of the pixel array and the receiving line are combined into multiple regions in a multi-row combination manner; The division of the region is determined based on the response time of the touch detection and the refresh frequency of the pixel array.

6. The touch display method according to claim 1, characterized in that, The receiving line is selectively connected to the touch chip or the ground terminal via a switching switch; The control of grounding the receiving line includes: controlling the switching switch to connect the receiving line to the grounding terminal; The step of controlling the receiving line to perform touch detection includes: controlling the switching switch to connect the receiving line to the touch chip.

7. An electronic device, characterized in that, The device includes a touch display panel and a control unit; the touch display panel includes a display screen and a touch layer; the display screen includes a pixel array and a scanning drive circuit, the scanning drive circuit is electrically connected to the pixel array and is used to scan and drive the pixel array to display an image according to a preset timing sequence; the touch layer is disposed on the substrate of the display screen, and the touch layer includes driving lines and receiving lines arranged in a cross pattern. The control unit is configured to: control the receiving line to be grounded during the display period of the screen display, so that the grounded receiving line forms a shielding layer that shields the radio frequency radiation of the screen display; and release the grounding of the receiving line during the blanking period between two adjacent frames, and control the receiving line to perform touch detection.

8. The electronic device according to claim 7, characterized in that, The control unit is also used to: detect the current timing signal and determine whether the working state of the display screen is in the above-mentioned blanking period; The control unit, based on the timing signal, cyclically controls the grounding of the receiving line and performs touch detection.

9. An electronic device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the touch display method as described in any one of claims 1-6.

10. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the touch display method as described in any one of claims 1-6.

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