Touch detection method, touch chip, display module and electronic device

Abstract

A touch detection method, which is applied to an electronic device configured with a touch chip and a display screen. The display screen comprises a plurality of transmitting electrodes and a plurality of receiving electrodes, and the touch chip is electrically connected to the plurality of transmitting electrodes and the plurality of receiving electrodes, wherein the plurality of transmitting electrodes are divided into a first transmitting electrode group and a second transmitting electrode group, the first transmitting electrode group is composed of at least two continuous transmitting electrodes, and the second transmitting electrode group is composed of at least two continuous transmitting electrodes. The touch detection method comprises: a touch chip outputting a first scanning signal to a first transmitting electrode group, and outputting a second scanning signal to a second transmitting electrode group, wherein the second scanning signal is inverted relative to the first scanning signal. The touch detection method is used for improving the touch detection performance and reducing interference on electrical signals in a display cathode of a display layer, thereby improving the display effect of a display screen. Further disclosed are a touch chip, a display module and an electronic device.

Description

Touch detection method, touch chip, display module and electronic device

[0001] This application claims priority to Chinese patent application filed on December 22, 2023, application number 202311795732.X, and application name “Touch detection method, touch chip, display module and electronic device,” all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a touch detection method, a touch chip, a display module, and an electronic device. Background Art

[0003] With the continuous development of display technology, electronic devices with integrated touch functions have gradually become prevalent in people's lives. Currently, the display screens in electronic devices mostly adopt the On-Cell Touch structure. With the continuous increase in user demand, electronic devices are gradually developing in the direction of being thinner and larger. However, as the thickness of the display screen gradually decreases, the distance between the touch layer and the display layer in the display screen will gradually decrease, causing interference between the electrical signals in the touch layer and the electrical signals of the display cathode in the display layer, which in turn affects the display quality of the display screen (such as the occurrence of water ripples). Summary of the Invention

[0004] Embodiments of the present application provide a touch detection method, a touch chip, a display module, and an electronic device for reducing interference between a touch layer and a display layer in a display screen and improving the display effect of the display screen.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, a touch detection method is provided, which is applied to an electronic device equipped with a touch chip and a display screen. The display screen includes multiple transmitting electrodes and multiple receiving electrodes, and the touch chip is electrically connected to all of the multiple transmitting electrodes and all of the multiple receiving electrodes. The multiple transmitting electrodes are divided into at least one first transmitting electrode group and at least one second transmitting electrode group, wherein the first transmitting electrode group is composed of at least two consecutive transmitting electrodes, and the second transmitting electrode group is composed of at least two consecutive transmitting electrodes. The above-mentioned touch detection method includes a first detection phase. In this first detection phase, the touch chip outputs a first scanning signal to the transmitting electrodes in each first transmitting electrode group and outputs a second scanning signal to the transmitting electrodes in each second transmitting electrode group. The second scanning signal is inverted with respect to the first scanning signal.

[0007] The touch detection method provided in the embodiment of the present application, by grouping the above-mentioned multiple transmitting electrodes, can, during the touch detection process, transmit a first scanning signal to a portion of the multiple transmitting electrodes (i.e., all the transmitting electrodes included in the first transmitting electrode group), and simultaneously transmit a second scanning signal with a phase opposite to the first scanning signal to another portion of the multiple transmitting electrodes (i.e., all the transmitting electrodes included in the second transmitting electrode group). That is, at the same time, one of the first transmitting electrode group and the second transmitting electrode group receives a scanning signal with a positive phase, and the other receives a scanning signal with a negative phase.

[0008] In this way, the capacitance values ​​of the multiple mutual capacitors corresponding to the same receiving electrode have at least partial positive and negative offset. Accordingly, the capacitance value of the mutual capacitor corresponding to the same receiving electrode is reduced, and the capacitance change of the mutual capacitor caused by touch is increased, thereby improving touch detection performance and improving the accuracy of touch detection (or touch recognition). Moreover, when the above-mentioned multiple transmitting electrodes simultaneously receive the first scanning signal and the second scanning signal with mutually opposite phases, the impact on the electrical signal in the display cathode of the display layer can be reduced, thereby reducing the interference with the electrical signal in the display cathode of the display layer, effectively improving the display effect of the display screen.

[0009] In a possible design of the first aspect, the touch detection method further includes a second detection phase. During the second detection phase, the touch chip outputs the same scanning signal to at least two adjacent transmitting electrodes at the junction of the first and second transmitting electrode groups. The addition of the second detection phase can compensate for any missed touch position detections that may occur during the first detection phase. In other words, the embodiments of the present application can combine the detection signals corresponding to the first detection phase with the detection signals corresponding to the second detection phase to comprehensively determine whether a touch event has occurred. This significantly improves the accuracy of touch detection.

[0010] In a possible design of the first aspect, the multiple emitting electrodes are further divided into at least one third emitting electrode group and at least one fourth emitting electrode group, the third emitting electrode group is composed of at least two consecutive emitting electrodes, and the fourth emitting electrode group is composed of at least two consecutive emitting electrodes. The touch chip outputs the same scanning signal to at least two emitting electrodes adjacent to each other at the junction of the first emitting electrode group and the second emitting electrode group, including: the touch chip outputs a first scanning signal to the emitting electrodes in each third emitting electrode group, and outputs a second scanning signal to the emitting electrodes in each fourth emitting electrode group; at least two emitting electrodes adjacent to each other at the junction of the first emitting electrode group and the second emitting electrode group are located in the same third emitting electrode group or the same fourth emitting electrode group. In the second detection stage, by regrouping the multiple emitting electrodes included in the display screen, the emitting electrodes included in the first emitting electrode group and the emitting electrodes included in the third emitting electrode group are partially repeated, and the emitting electrodes included in the second emitting electrode group and the emitting electrodes included in the fourth emitting electrode group are partially repeated, so that any touch position on the full screen can be detected and identified, thereby improving the accuracy of touch detection.

[0011] In a possible design of the first aspect, along the extension direction of the receiving electrode, the third transmitting electrode group and the fourth transmitting electrode group are alternately arranged.

[0012] In a possible design of the first aspect, the absolute value of the difference between the number of transmitting electrodes receiving the first scan signal and the number of transmitting electrodes receiving the second scan signal is within a preset range. This can increase the change in mutual capacitance caused by touch, enhance touch detection performance, reduce interference with the electrical signal in the display cathode of the display layer, and improve the display quality of the display screen.

[0013] In a possible design of the first aspect, the number of transmitting electrodes receiving the first scan signal is equal to the number of transmitting electrodes receiving the second scan signal. This allows the overall row sum to be zero at the same time during the first detection phase, effectively increasing the change in mutual capacitance caused by touch, enhancing touch detection performance, and effectively reducing interference with the electrical signal in the display cathode of the display layer, thereby effectively improving the display quality of the display screen.

[0014] In a possible design of the first aspect, the maximum value of the preset range is 40% of the maximum of the number of transmitting electrodes receiving the first scanning signal and the number of transmitting electrodes receiving the second scanning signal. This ensures that, in the above-mentioned touch detection method, the proportion of the change in mutual capacitance caused by touch is increased, touch performance is improved, and interference with the electrical signal in the display cathode of the display layer is reduced, thereby improving the display effect of the display screen.

[0015] In a possible design of the first aspect, along the extension direction of the receiving electrode, the first transmitting electrode group and the second transmitting electrode group are alternately arranged.

[0016] In a possible design of the first aspect, the touch chip outputs a first scanning signal to the transmitting electrodes in each first transmitting electrode group and a second scanning signal to the transmitting electrodes in each second transmitting electrode group, including: the touch chip outputs the first scanning signal to the transmitting electrodes in each first transmitting electrode group and the second scanning signal to the transmitting electrodes in each second transmitting electrode group in a first power consumption detection mode. The touch detection method also includes: the touch chip receives detection signals from multiple receiving electrodes; the touch chip determines whether a touch event is detected based on the detection signals; after detecting the touch event, the touch chip switches from the first power consumption detection mode to the second power consumption detection mode to obtain the touch coordinates of the touch event; the power consumption of the first power consumption detection mode is lower than that of the second power consumption detection mode. In the above touch detection process, in the first power consumption detection mode, the touch chip only detects whether a touch event has occurred and does not obtain the touch coordinates of the touch event. Instead, the touch coordinates of the touch event are obtained after switching to the second power consumption detection mode, thereby achieving a higher sampling rate. This helps to significantly reduce the power consumption of touch detection.

[0017] In a second aspect, a touch control chip is provided, which is applied to an electronic device equipped with a display screen. The display screen includes multiple transmitting electrodes and multiple receiving electrodes, and the touch control chip is electrically connected to all of the multiple transmitting electrodes and all of the multiple receiving electrodes. The multiple transmitting electrodes are divided into at least one first transmitting electrode group and at least one second transmitting electrode group, the first transmitting electrode group consisting of at least two consecutive transmitting electrodes, and the second transmitting electrode group consisting of at least two consecutive transmitting electrodes. The touch control chip is configured to: in a first detection phase, output a first scanning signal to the transmitting electrodes in each first transmitting electrode group, and output a second scanning signal to the transmitting electrodes in each second transmitting electrode group, wherein the second scanning signal is inverted from the first scanning signal.

[0018] In a possible design of the second aspect, the touch chip is further configured to: in the second detection phase, output the same scanning signal to at least two adjacent transmitting electrodes at the junction of the first transmitting electrode group and the second transmitting electrode group.

[0019] In a possible design of the second aspect, the multiple transmitting electrodes are further divided into at least one third transmitting electrode group and at least one fourth transmitting electrode group, the third transmitting electrode group being composed of at least two consecutive transmitting electrodes, and the fourth transmitting electrode group being composed of at least two consecutive transmitting electrodes. During the second detection phase, the touch control chip is specifically configured to: output a first scanning signal to the transmitting electrodes in each third transmitting electrode group, and output a second scanning signal to the transmitting electrodes in each fourth transmitting electrode group; at least two adjacent transmitting electrodes at the junction of the first transmitting electrode group and the second transmitting electrode group are located in the same third transmitting electrode group or the same fourth transmitting electrode group.

[0020] In a possible design manner of the second aspect, along the extension direction of the receiving electrode, the third transmitting electrode group and the fourth transmitting electrode group are alternately arranged.

[0021] In a possible design of the second aspect, an absolute value of a difference between the number of transmitting electrodes receiving the first scanning signal and the number of transmitting electrodes receiving the second scanning signal is within a preset range.

[0022] In a possible design of the second aspect, the number of transmitting electrodes receiving the first scanning signal is equal to the number of transmitting electrodes receiving the second scanning signal.

[0023] In a possible design manner of the second aspect, the maximum value of the above-mentioned preset range is 40% of the maximum value of the number of transmitting electrodes receiving the first scanning signal and the number of transmitting electrodes receiving the second scanning signal.

[0024] In a possible design of the second aspect, along the extension direction of the receiving electrode, the first transmitting electrode group and the second transmitting electrode group are alternately arranged.

[0025] In a possible design of the second aspect, the touch control chip is specifically configured to: output a first scanning signal to each transmitting electrode in the first transmitting electrode group, and output a second scanning signal to each transmitting electrode in the second transmitting electrode group, in a first power consumption detection mode. The touch control chip is further configured to: receive detection signals from a plurality of receiving electrodes; determine whether a touch event has been detected based on the detection signals; and, after detecting a touch event, switch from the first power consumption detection mode to a second power consumption detection mode to obtain touch coordinates of the touch event. The power consumption of the first power consumption detection mode is lower than that of the second power consumption detection mode.

[0026] In a third aspect, a display module is provided, comprising: a display screen and a touch control chip. The display screen includes multiple transmitting electrodes and multiple receiving electrodes. The touch control chip is electrically connected to the multiple transmitting electrodes and the multiple receiving electrodes. The touch control chip is configured to implement the touch detection method described in any embodiment of the first aspect.

[0027] In a fourth aspect, an electronic device is provided, comprising a processor and a display module, wherein the processor is coupled to the display module. The display module comprises the display module as described in any embodiment of the third aspect.

[0028] In a fifth aspect, a computer-readable storage medium is provided, which includes computer instructions. When the computer instructions are executed on a device, the device executes the touch detection method as described in any embodiment of the first aspect.

[0029] In a sixth aspect, a computer program product is provided. When the computer program product is run on a computer, the computer is caused to execute the touch detection method according to any one of the first aspects.

[0030] The technical effects brought about by any design method in the second to sixth aspects can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a structural diagram of an electronic device provided in an embodiment of the present application;

[0032] FIG2 is a structural diagram of a display module provided in an embodiment of the present application;

[0033] FIG3 is a structural diagram of a display screen provided in an embodiment of the present application;

[0034] FIG4 is a structural diagram of another display module provided in an embodiment of the present application;

[0035] FIG5 is a structural diagram of a touch layer provided in an embodiment of the present application;

[0036] FIG6 is a timing diagram of a display module provided in an embodiment of the present application;

[0037] FIG7 is a timing diagram of another display module provided in an embodiment of the present application;

[0038] FIG8 is a timing diagram of another display module provided in an embodiment of the present application;

[0039] FIG9 is a diagram illustrating a structure of a touch layer and a timing sequence of a display module provided by an embodiment of the present application;

[0040] FIG10 is a diagram illustrating another structure of a touch layer and a timing sequence of a display module provided by an embodiment of the present application;

[0041] FIG11 is a diagram illustrating another structure of a touch layer and a timing sequence of a display module provided by an embodiment of the present application;

[0042] FIG12 is a diagram illustrating another structure of a touch layer and a timing sequence of a display module provided by an embodiment of the present application;

[0043] FIG13 is a flow chart of a touch detection method provided in an embodiment of the present application;

[0044] FIG14 is a flow chart of another touch detection method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] The following will describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0046] In the description of the embodiments of the present application, unless otherwise specified, "a plurality of" refers to two or more than two. "At least one item" or similar expressions refers to any combination of these items, including any combination of a single item or plural items.

[0047] In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0048] When describing some embodiments, the words "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connected" can be directly connected or indirectly connected through an intermediate medium. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term "coupled" may be used to indicate that two or more components are in direct physical or electrical contact. However, the term "coupled" may also mean that two or more components are not in direct contact with each other, but still cooperate or interact with each other.

[0049] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0050] In the embodiments of the present application, "up", "down", "left" and "right" are not limited to being defined relative to the orientation of the components schematically placed in the drawings. It should be understood that these directional terms can be relative concepts, which are used for description and clarification relative to the components, and can change accordingly according to changes in the orientation of the components in the drawings. In the drawings, the thickness of the layers and regions are exaggerated for the sake of clarity, and the dimensional ratio relationship between the parts in the drawings does not reflect the actual dimensional ratio relationship. Therefore, changes in the shape relative to the drawings due to, for example, manufacturing technology and / or tolerances can be envisioned. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown in the present application, but include shape deviations due to, for example, manufacturing. For example, an etched area shown as a rectangle will typically have curved features. Therefore, the areas shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of the areas of the device and are not intended to limit the scope of the exemplary embodiments.

[0051] In addition, the architecture and scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of the architecture and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0052] An embodiment of the present application provides an electronic device. The electronic device is, for example, a consumer electronic product, a home electronic product, a vehicle-mounted electronic product, a financial terminal product, and a communication electronic product. Among them, consumer electronic products include mobile phones, tablet computers, laptop computers, e-readers, personal computers (PCs), personal digital assistants (PDAs), desktop displays, smart wearable products (for example, smart watches, smart bracelets), virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, drones, etc. Home electronic products include smart door locks, televisions, remote controls, refrigerators, rechargeable small household appliances (for example, soymilk machines, sweeping robots), etc. Vehicle-mounted electronic products include car navigation systems, car high-density digital video discs (DVDs), etc. Financial terminal products include automated teller machines (ATMs), self-service terminals, etc. Communication electronic products include communication equipment such as servers, storage devices, radars, and base stations.

[0053] For ease of explanation, the following description uses a mobile phone as an example. Figure 1 is a block diagram of the structure of an electronic device provided in an embodiment of the present application. As shown in Figure 1, the electronic device 1000 may include one or more of the following components: a processor 100, a memory 200, and a display module 300.

[0054] The processor 100 may include one or more processing cores. The processor 100 utilizes various interfaces and circuits to connect various components within the entire electronic device 1000. By running or executing instructions, programs, code sets, or instruction sets stored in the memory 200, and calling data stored in the memory 200, the processor 100 performs various functions of the electronic device 1000 and processes data. For example, the processor 100 may be implemented in the form of at least one hardware component selected from the group consisting of a digital signal processing (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 100 may integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), a neural-network processing unit (NPU), an application processor (AP), and a modem. The CPU primarily processes the operating system, user interface, and application programs. The GPU is responsible for rendering and drawing the content displayed by the display module 300. The NPU is used to implement artificial intelligence (AI) functions. The modem is used to handle wireless communications. It is understandable that the above-mentioned modem may not be integrated into the processor 100, but may be implemented by a separate chip.

[0055] The memory 200 may include a random access memory (RAM) or a read-only memory (ROM). Exemplarily, the memory 200 includes a non-transitory computer-readable storage medium, and the memory 200 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 200 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing various method embodiments of the present application, etc. The data storage area may store data (such as audio data, a phone book), etc. created according to the use of the electronic device 1000.

[0056] The display module 300 is a display component for displaying images and is typically located on the light-emitting side of the electronic device 1000. The display module 300 can be designed as a full-screen, curved screen, special-shaped screen, double-sided screen, or foldable screen. The display module 300 can also be designed as a combination of a full-screen and a curved screen, or a combination of a special-shaped screen and a curved screen, etc., which are not limited in this embodiment of the present application.

[0057] In some embodiments, with continued reference to FIG. 1 , the display module 300 includes a display screen 310 and a touch panel integrated circuit (TPIC) 320 .

[0058] For example, the display screen 310 may be a low-temperature polysilicon (LTPS) display screen, an organic light emitting diode (OLED) display screen, a low-temperature polycrystalline oxide (LTPO) display screen, a liquid crystal display (LCD), a micro organic light emitting diode (micro LED) display screen, etc. Of course, the embodiment of the present application does not limit the type of the display screen 310. Any display screen with a touch display function is applicable to the embodiment of the present application. The above list is only for illustration.

[0059] The touch chip 320 is used to drive the display screen 310 to receive touch operations (also known as touch events). The touch operations are triggered by a user using any suitable object such as a finger or a stylus. In the embodiment of the present application, the touch chip 320 is also used to switch the power consumption detection mode of the display screen 310. The power consumption detection mode includes a first power consumption detection mode and a second power consumption detection mode. For details about the first power consumption detection mode and the second power consumption detection mode, please refer to the relevant description below and will not be repeated here.

[0060] In addition, those skilled in the art will understand that the structure of the electronic device 1000 shown in FIG1 does not limit the electronic device 1000. The electronic device 1000 may include more or fewer components than shown, or may combine certain components, or arrange the components differently. For example, the electronic device 1000 may also include a microphone, a speaker, a radio frequency circuit, an input unit, a sensor, an audio circuit, a wireless fidelity (WiFi) module, a power supply, a Bluetooth module, and other components, which will not be described in detail here.

[0061] FIG2 is a structural diagram of a display module provided in an embodiment of the present application. In some embodiments, FIG2 schematically illustrates a display screen 310 and a touch chip 320 in a display module 300 .

[0062] Exemplarily, the display screen 310 has an active display area (AA) A and a peripheral area B, wherein the peripheral area B is located outside the active display area A. For example, the peripheral area B is arranged around the active display area A. The active display area A of the display screen 310 serves as the display area of ​​the electronic device 1000, and the peripheral area B of the display screen 310 serves as the non-display area of ​​the electronic device 1000.

[0063] Continuing to refer to FIG2 , the display screen 310 includes a plurality of sub-pixels P located in an effective display area A. For the sake of convenience, the above-mentioned plurality of sub-pixels P are described in this application as an example of being arranged in a matrix form. Exemplarily, the display screen 310 also includes a gate drive circuit and a source drive circuit located in the peripheral area B, the gate drive circuit being used to provide a gate drive signal to the sub-pixel P, and the source drive circuit being used to provide a source drive signal to the sub-pixel P. The number of gate drive circuits may be one or more. Optionally, as shown in FIG2 , the display screen 310 includes two gate drive circuits, which are located on opposite sides of the effective display area A. The source drive circuit may be integrated in a display driver chip, for example. Optionally, the display driver chip is directly attached to the display screen 310 in the form of a bare chip (die).

[0064] The peripheral area B includes a bonding area, and the touch chip 320 is bonded in the bonding area to form an electrical connection with the display screen 310 .

[0065] Figure 3 is a cross-sectional view of a display screen 310 provided in an embodiment of the present application. In some embodiments, as shown in Figure 3, the display screen 310 includes a display substrate 1, a touch layer 2, a polarizer 3, an adhesive layer 4, and a cover plate 5 stacked in sequence.

[0066] Exemplarily, the display substrate 1 includes a substrate 11, a display layer 12 located on the substrate 11, and an encapsulation layer 13 located on the display layer 12. The material of the substrate 11 includes but is not limited to organic materials to facilitate flexible display. The display layer 12 includes a plurality of pixel circuits located on the substrate 11, and a plurality of light-emitting devices located on the plurality of pixel circuits, each light-emitting device including but not limited to an OLED. The plurality of pixel circuits and the plurality of light-emitting devices are electrically connected, for example, one to one, and the pixel circuit is used to drive the light-emitting device electrically connected thereto to emit light. A pixel circuit and a light-emitting device electrically connected thereto constitute a sub-pixel P. The encapsulation layer 13 covers the plurality of light-emitting devices and is used to encapsulate the pixel circuits and the light-emitting devices. The encapsulation layer 13 includes but is not limited to a thin film encapsulation layer (TFE).

[0067] Illustratively, polarizer 3 is attached to touch layer 2. Polarizer 3 is used to reduce reflection of natural light incident on the pixel circuits in display substrate 1, thereby improving contrast. Adhesive layer 4 is used to bond polarizer 3 to cover plate 5. Cover plate 5 includes, but is not limited to, a glass cover plate and is used to protect display screen 310.

[0068] Examples of touch layer 2 include, but are not limited to, FMLOC (flexible multi-layer on cell) and FSLOC (flexible single-layer on cell), though this embodiment of the present application does not limit this. Touch layer 2 is electrically connected to touch chip 320. Touch layer 2 is configured to receive touch operations and transmit them to touch chip 320.

[0069] Figure 4 is a structural diagram of another display module provided in an embodiment of the present application. In some embodiments, Figure 4 illustrates a touch chip 320 in a display module 300 and a touch layer 2 in a display screen 310. In Figure 4, the touch layer 2 is shown as FMLOC.

[0070] For example, referring to Figures 3 and 4 , the touch layer 2 includes a first conductive layer, an insulating layer, and a second conductive layer stacked in sequence along a direction perpendicular to and away from the substrate 11. The first conductive layer includes a plurality of receiving electrodes (RX) 21, wherein each receiving electrode 21 extends along a first direction X, and the plurality of receiving electrodes 21 are sequentially spaced apart along a second direction Y. The second conductive layer includes a plurality of transmitting electrodes (TX) 22, wherein each transmitting electrode 22 extends, for example, along the second direction Y, and the plurality of transmitting electrodes 22 are sequentially spaced apart along the first direction X. Optionally, the arrangement of the receiving electrodes 21 and the transmitting electrodes 22 can also be interchanged, and this is not limited in the present embodiment.

[0071] The first direction X and the second direction Y intersect. For example, the first direction X and the second direction Y are perpendicular to each other. This means that each receiving electrode 21 and each transmitting electrode 22 are arranged to intersect each other, and each receiving electrode 21 and the transmitting electrode 22 intersecting therewith can form a capacitor (or capacitor) through the insulating layer.

[0072] Continuing to refer to Figure 4, the display module 300 also includes a plurality of first signal lines L1 and a plurality of second signal lines L2. The plurality of first signal lines L1 and the plurality of second signal lines L2 all extend to the binding area and are electrically connected to the touch chip 320 through the pins in the binding area. The plurality of first signal lines L1 are also electrically connected to the plurality of receiving electrodes 21 in a one-to-one correspondence, so that each receiving electrode 21 can be electrically connected to the touch chip 320 through the corresponding first signal line L1, so as to facilitate the transmission of electrical signals (i.e., detection signals). The plurality of second signal lines L2 are also electrically connected to the plurality of transmitting electrodes 22 in a one-to-one correspondence, so that each transmitting electrode 22 can be electrically connected to the touch chip 320 through the corresponding second signal line L2, so as to facilitate the transmission of electrical signals (i.e., scanning signals). In this way, touch detection can be achieved through the mutual cooperation between the touch chip 320 and each transmitting electrode 22 and each receiving electrode 21.

[0073] As the frequency of user use of the electronic device 1000 increases, the power consumption requirements for the electronic device 1000 are becoming increasingly higher to ensure continuity of use. Correspondingly, the power consumption requirements for touch detection of the display screen 310 are becoming increasingly stringent. In order to reduce the power consumption of touch detection of the display screen 310, the touch detection mode can be divided into a first power consumption detection mode and a second power consumption detection mode. The power consumption of the first power consumption detection mode is lower than that of the second power consumption detection mode. The first power consumption detection mode can also be referred to as a low power consumption detection mode, and the second power consumption detection mode can also be referred to as a normal detection mode or a high-performance detection mode. When the user is not operating the electronic device 1000, the display screen 310 and the touch chip 320 enter the first power consumption detection mode. In the first power consumption detection mode, power consumption is low, and it is possible to determine whether a touch event exists, that is, it is possible to determine whether the user has touched the display screen 310. If a touch event is determined to exist, the touch detection mode is switched to the second power consumption detection mode to respond to the touch event in a timely manner.

[0074] In the second power consumption detection mode, the electronic device 1000 may adopt a self-capacitive touch detection technology or a mutual-capacitive touch detection technology. The following uses the structure shown in FIG5 as an example to schematically illustrate these two touch detection technologies.

[0075] In Figure 5 , there are 16 receiving electrodes 21 (R1, R2, R3, ..., R14, R15, and R16), each extending along the second direction Y. These 16 receiving electrodes 21 are sequentially spaced apart along the first direction X. There are 8 transmitting electrodes 22 (T1, T2, ..., T7, and T8), each extending along the first direction X. Of course, the number of receiving electrodes 21 and the number of transmitting electrodes 22 in the touch layer 2 are not limited to this. Alternatively, the number of receiving electrodes 21 may be 38, and the number of transmitting electrodes 22 may be 18; alternatively, the number of receiving electrodes 21 may be 32, and the number of transmitting electrodes 22 may be 16.

[0076] FIG6 is a timing diagram of a display module provided in an embodiment of the present application. In combination with FIG5 and FIG6, when mutual capacitance touch detection technology is adopted, 128 (=8×16) mutual capacitances are formed between the 16 receiving electrodes 21 and the 8 transmitting electrodes 22. The touch chip 320 outputs scanning signals to the 8 transmitting electrodes 22 in a time-sharing manner, and simultaneously receives detection signals from the 16 receiving electrodes 21 to determine whether a touch event occurs based on the detection signal, and confirm the touch coordinates of the touch event if a touch event occurs. That is, in this case, 8 scanning signals need to be output to complete the detection of the above 128 mutual capacitances.

[0077] In addition, the mutual capacitance typically has a capacitance range of 0.3 pF to 0.4 pF. When a touch event occurs, the touch change typically ranges from 0.06 pF to 0.08 pF, that is, the mutual capacitance capacitance change is approximately 20%.

[0078] FIG7 is a timing diagram of another display module provided in an embodiment of the present application. In conjunction with FIG5 and FIG7, when self-capacitive touch detection technology is adopted, the mutual capacitance between the transmitting electrode 22 and the receiving electrode 21 can no longer be detected. Only the capacitance of the transmitting electrode 22 to the ground and the capacitance of the receiving electrode 21 to the ground are detected. In this case, the above-mentioned 8 transmitting electrodes 22 and 16 receiving electrodes 21 can constitute 24 (=8+16) self-capacitors. The touch chip 320 simultaneously outputs a scan signal to the 8 transmitting electrodes 22, and then simultaneously outputs a scan signal to the 16 receiving electrodes 21, so as to complete the detection of touch events through these two scans.

[0079] In addition, the distance between the touch layer 2 and the display layer of the display substrate 1 is small. For example, the distance between the touch layer 2 and the display cathode of the light-emitting device in the display layer 12 is approximately 10 μm. This makes the self-capacitance of the transmitting electrode 22 or the receiving electrode 21 (especially the transmitting electrode 22) to the ground very large. For example, the capacitance of the self-capacitance of the transmitting electrode 22 to the ground is typically in the range of 400pF-800pF. In the case of a touch event, the touch change is typically in the range of 0.3pF-0.4pF, that is, the capacitance change of the self-capacitance is less than 0.1%.

[0080] The two touch detection technologies demonstrate that mutual-capacitive touch detection takes longer and consumes more power, while self-capacitive touch detection takes less time and consumes less power. Furthermore, mutual-capacitive touch detection offers superior performance, with a signal-to-noise ratio (SNR) exceeding 30 times that of self-capacitive touch detection, compared to less than 10 times for self-capacitive touch detection.

[0081] In the first power consumption detection mode, the electronic device 1000 may adopt a self-capacitive touch detection technology or a mutual-capacitive touch detection technology. Continuing with the structure shown in FIG5 as an example, the two touch detection technologies are schematically described.

[0082] 7 , when the self-capacitive touch detection technology is adopted, the capacitance of the transmitting electrode 22 to the ground and / or the capacitance of the receiving electrode 21 to the ground can be detected to determine whether a touch event occurs.

[0083] However, the performance of self-capacitive touch detection technology is poor and prone to misidentification, which can easily cause the display module to exit the first power consumption detection mode and enter the second power consumption detection mode, making it difficult to reduce power consumption. Moreover, during the touch detection process, the phase waveform of the scanning signal output to each transmitting electrode 22 is the same, and the phase waveform of the scanning signal output to each receiving electrode 21 is the same. This can easily interfere with the electrical signal in the display cathode of the display layer 12, thereby affecting the display effect of the display screen 310 (for example, the appearance of water ripples).

[0084] Figure 8 is a timing diagram of another display module provided by an embodiment of the present application. Combining Figures 5 and 8, when using mutual capacitance touch detection technology, the touch chip 320 simultaneously outputs a scanning signal to each transmitting electrode 22 and simultaneously receives a detection signal from each receiving electrode 21 to determine whether a touch event has occurred based on the detection signal. In other words, touch detection only requires outputting a scanning signal once to each transmitting electrode 22. This helps reduce power consumption.

[0085] However, because the scanning signals are simultaneously output to the eight transmitting electrodes 22, the mutual capacitance corresponding to the same receiving electrode 21 increases eightfold, while the touch change remains essentially unchanged. This reduces the mutual capacitance change from 20% to approximately 2.5%, thereby degrading touch detection performance. Furthermore, during touch detection, the scanning signals output to each transmitting electrode 22 have identical phase waveforms, which can easily interfere with the electrical signals in the display cathode of the display layer 12, thereby affecting the display quality of the display screen 310 (e.g., causing water ripples).

[0086] Based on this, embodiments of the present application provide a touch detection method that, for example, employs mutual capacitance touch detection technology and is applied to the aforementioned display module 300 and electronic device 1000. Embodiments of the present application group the emitter electrodes 22 and transmit scan signals to corresponding emitter electrodes 22 based on the grouping, thereby improving touch detection performance, reducing interference with electrical signals in the display cathode of the display layer 12, and improving the display effect of the display screen 310.

[0087] In some examples, the multiple emitting electrodes 22 included in the display screen 310 of the display module 300 can be divided into at least one first emitting electrode group 22a and at least one second emitting electrode group 22b. That is, the number of first emitting electrode groups 22a can be one, two, three, or even more; the number of second emitting electrode groups 22b can be one, two, three, or even more. The first emitting electrode groups 22a and the second emitting electrode groups 22b are arranged alternately along the extension direction of the receiving electrodes 21.

[0088] The first emitting electrode group 22a is composed of at least two consecutive emitting electrodes 22, and the second emitting electrode group 22b is composed of at least two consecutive emitting electrodes 22. That is, the first emitting electrode group 22a includes two, three, or even more consecutive emitting electrodes 22, and the second emitting electrode group 22b includes two, three, or even more consecutive emitting electrodes 22. This also means that there is no intersection between the first emitting electrode group 22a and the second emitting electrode group 22b.

[0089] The following diagrams schematically illustrate the grouping of transmitting electrodes. Figures 9(a), 10(a), 11(a), and 12(a) each illustrate a touch layer structure. In Figures 9(a), 10(a), 11(a), and 12(a), the number of receiving electrodes 21 is 32 (R1, R2, R3, ..., R30, R31, R32), and the number of transmitting electrodes 22 is 16 (T1, T2, T3, ..., T14, T15, T16). In the touch layer 2 shown in FIG9( a ), there is one first emitting electrode group 22a, which includes eight consecutive emitting electrodes 22 (e.g., T1, T2, ..., T7, T8); and one second emitting electrode group 22b, which includes eight consecutive emitting electrodes 22 (e.g., T9, T10, ..., T15, T16). The first emitting electrode group 22a and the second emitting electrode group 22b are arranged sequentially along the extending direction of the receiving electrode 21. In the touch layer 2 shown in FIG11( a ), there are two first emitting electrode groups 22 a , each of which includes four consecutive emitting electrodes 22 (e.g., T1, T2, T3, T4, and T13, T14, T15, and T16). There is one second emitting electrode group 22 b , which includes eight consecutive emitting electrodes 22 (e.g., T5, T6, ..., T11, and T12). The second emitting electrode group 22 b is located between the two first emitting electrode groups 22 a .

[0090] In some examples, as shown in FIG13 , the touch detection method includes: S10 , a first detection stage.

[0091] S10, in the first detection phase, the touch control chip 320 outputs a first scanning signal to each emitting electrode 22 in the first emitting electrode group 22a, and outputs a second scanning signal to each emitting electrode 22 in the second emitting electrode group 22b. As shown in FIG9(b) and FIG11(b), the second scanning signal is inverted with respect to the first scanning signal.

[0092] Exemplarily, "anti-phase" means that the frequencies of the first scanning signal and the second scanning signal are the same, and the first scanning signal and the second scanning signal will switch levels (or phases) at the same time. In other words, when the level of the first scanning signal switches from a high level to a low level, the level of the second scanning signal switches from a low level to a high level; or, when the level of the first scanning signal switches from a low level to a high level, the level of the second scanning signal switches from a high level to a low level. The "simultaneous" here can be the same moment in a strict sense, or there can be a small deviation, which is not limited in the embodiments of the present application.

[0093] This means that in the above-mentioned first detection stage, at the same time, one of the first transmitting electrode group 22a and the second transmitting electrode group 22b receives a high-level scanning signal (which can also be understood as a scanning signal with a positive phase), and the other receives a low-level scanning signal (which can also be understood as a scanning signal with a negative phase).

[0094] Compared to simultaneously transmitting the same scanning signal to multiple transmitting electrodes 22, in the embodiment of the present application, the mutual capacitance corresponding to the same receiving electrode 21 has at least partial positive and negative offset. Accordingly, the mutual capacitance corresponding to the same receiving electrode 21 is reduced, and the change in the mutual capacitance caused by touch is increased, thereby improving touch detection performance and improving the accuracy of touch detection (or touch recognition). In addition, the interference with the electrical signal in the display cathode of the display layer 12 is also reduced, which is conducive to improving the display effect of the display screen 310.

[0095] In some embodiments, in the first detection phase, the absolute value of the difference between the number of emitting electrodes 22 receiving the first scanning signal and the number of emitting electrodes 22 receiving the second scanning signal is within a preset range.

[0096] For example, the number of emitting electrodes 22 receiving the first scan signal may be equal to the number of emitting electrodes 22 receiving the second scan signal. In this case, the difference between the number of emitting electrodes 22 receiving the first scan signal and the number of emitting electrodes 22 receiving the second scan signal is 0.

[0097] For example, the number of emitting electrodes 22 receiving the first scan signal may not be equal to the number of emitting electrodes 22 receiving the second scan signal. In this case, the number of emitting electrodes 22 receiving the first scan signal may be, for example, greater than the number of emitting electrodes 22 receiving the second scan signal; or, the number of emitting electrodes 22 receiving the first scan signal may be, for example, less than the number of emitting electrodes 22 receiving the second scan signal. Accordingly, the absolute value a of the difference between the number of emitting electrodes 22 receiving the first scan signal and the number of emitting electrodes 22 receiving the second scan signal is in the range of a≤X, where X is a positive integer. For example, X can be 1, 2, 3, etc., where X can be determined based on the touch detection performance and the display effect of the display screen 310.

[0098] That is, the absolute value a of the difference is in the range of 0≤a≤X.

[0099] By setting the absolute value of the difference between the number of emitting electrodes 22 receiving the first scanning signal and the number of emitting electrodes 22 receiving the second scanning signal within a preset range, in the above-mentioned first detection stage, at the same time, the overall row sum can be 0 (at this time, the number of emitting electrodes 22 receiving the first scanning signal is equal to the number of emitting electrodes 22 receiving the second scanning signal) or close to 0 (at this time, the number of emitting electrodes 22 receiving the first scanning signal is not equal to the number of emitting electrodes 22 receiving the second scanning signal), thereby effectively increasing the capacitance change of the mutual capacitance caused by touch, enhancing the touch detection performance, and effectively reducing the interference with the electrical signal in the display cathode of the display layer 12, thereby effectively improving the display effect of the display screen 310.

[0100] In some examples, the maximum value of the preset range is 40% of the maximum value between the number of emitting electrodes 22 receiving the first scanning signal and the number of emitting electrodes 22 receiving the second scanning signal.

[0101] Optionally, the absolute value of the difference between the number of transmitting electrodes 22 receiving the first scanning signal and the number of transmitting electrodes 22 receiving the second scanning signal can be 40%, 35%, 33%, 30%, 25%, 20%, 10% of the above maximum value.

[0102] For example, in FIG9(a), the number of emitting electrodes 22 is 16. In this case, the maximum number of emitting electrodes 22 included in the first emitting electrode group 22a and the minimum number of emitting electrodes 22 included in the second emitting electrode group 22b is 10, and the minimum number of emitting electrodes 22 included in the second emitting electrode group 22b is 6. In other words, the number of emitting electrodes 22 included in the first emitting electrode group 22a can be 10, 9, 8, 7, or 6, and correspondingly, the number of emitting electrodes 22 included in the second emitting electrode group 22b can be 6, 7, 8, 9, or 10.

[0103] By limiting the maximum value of the above-mentioned preset range, it can be ensured that in the above-mentioned touch detection method, the proportion of the mutual capacitance change caused by touch is increased, the touch performance is improved, and the interference with the electrical signal in the display cathode of the display layer 12 is also reduced, thereby improving the display effect of the display screen 310.

[0104] In some examples, in the above S10, the touch control chip outputs a first scanning signal to the emitting electrode 22 in each first emitting electrode group 22a, and outputs a second scanning signal to the emitting electrode 22 in each second emitting electrode group 22b, including: the touch control chip 320 outputs a first scanning signal to the emitting electrode 22 in each first emitting electrode group 22a, and outputs a second scanning signal to the emitting electrode 22 in each second emitting electrode group 22b in the first power consumption detection mode.

[0105] The first power consumption detection mode is a low power consumption detection mode.

[0106] On this basis, as shown in FIG13 , the touch detection method further includes: S20 - S40 .

[0107] S20 , the touch control chip 320 receives detection signals from the plurality of receiving electrodes 21 .

[0108] When no touch operation is performed, the mutual capacitances corresponding to different receiving electrodes 21 are substantially the same. Accordingly, the detection signals received by the touch control chip 320 from the receiving electrodes 21 are substantially the same.

[0109] When a touch operation is performed, the capacitance of the mutual capacitance corresponding to the receiving electrode 21 below the touch position changes, while the capacitance of the mutual capacitance corresponding to the other receiving electrodes 21 remains basically unchanged. Accordingly, the detection signal received by the touch chip 320 from the receiving electrode 21 below the touch position is different from the detection signals of the other receiving electrodes 21.

[0110] For example, FIG9(a) and FIG11(a) illustrate touch position TP1 and touch position TP2, respectively. Touch position TP1 is located above the emitting electrode 22 included in the first emitting electrode group 22a, and touch position TP2 is located above the emitting electrode 22 included in the second emitting electrode group 22b. Optionally, when a touch operation occurs, the first scanning signal input to each emitting electrode 22 in the first emitting electrode group 22a has a positive phase, and the second scanning signal input to each emitting electrode 22 in the second emitting electrode group 22b has a negative phase. In this case, the capacitance of the mutual capacitance corresponding to the receiving electrode 21 (i.e., R29) below the touch position TP1 changes, and the change is positive. The detection signal received by the touch chip 320 from the receiving electrode 21 (i.e., R29) can be the positive change in capacitance; the capacitance of the mutual capacitance corresponding to the receiving electrode 21 (i.e., R20) below the touch position TP2 changes, and the change is negative. The detection signal received by the touch chip 320 from the receiving electrode 21 (i.e., R20) can be the negative change in capacitance.

[0111] S30 : The touch chip 320 determines whether a touch event is detected based on the detection signal.

[0112] For example, if the detection signal from the receiving electrode 21 remains essentially unchanged, it indicates that the capacitance of the mutual capacitance corresponding to the receiving electrode 21 remains essentially unchanged. In this case, the touch control chip 320 determines that no touch event has been detected and no touch operation has occurred. If the detection signal from the receiving electrode 21 changes, it indicates that the capacitance of the mutual capacitance corresponding to the receiving electrode 21 has changed. In this case, the touch control chip 320 determines that a touch event has been detected and a touch operation has occurred.

[0113] S40: After detecting a touch event, the touch chip 320 switches from a first power consumption detection mode to a second power consumption detection mode to obtain touch coordinates of the touch event. The power consumption of the first power consumption detection mode is lower than that of the second power consumption detection mode.

[0114] In other words, when a touch event occurs, the touch chip 320 will switch the power consumption detection mode, that is, exit the first power consumption detection mode and enter the second power consumption detection mode, and then combine the detection signal received by the touch chip 320 to obtain the touch coordinates of the touch event to make a timely response to the touch event.

[0115] During the touch detection process, in the first power consumption detection mode, the touch chip 320 only detects whether a touch event has occurred and does not obtain the touch coordinates of the touch event. Instead, the touch coordinates of the touch event are obtained after switching to the second power consumption detection mode, achieving a higher sampling rate. This helps significantly reduce the power consumption of touch detection.

[0116] It is understandable that when a touch position simultaneously covers multiple adjacent transmit electrodes 22 at the intersection of the first transmit electrode group 22a and the second transmit electrode group 22b, the changes in the mutual capacitance corresponding to the receive electrodes 21 below the touch position may cancel each other out. For example, FIG9(a) and FIG11(a) illustrate touch position TP3, and FIG11(a) also illustrates touch position TP4. In FIG9(a), touch position TP3 simultaneously covers one emitting electrode 22 (i.e., T8) in the first emitting electrode group 22a and one emitting electrode 22 (i.e., T9) in the second emitting electrode group 22b. In FIG11(a), touch position TP3 simultaneously covers one emitting electrode 22 (i.e., T4) in the first emitting electrode group 22a and one emitting electrode 22 (i.e., T5) in the second emitting electrode group 22b. Touch position TP4 simultaneously covers one emitting electrode 22 (i.e., T13) in the first emitting electrode group 22a and one emitting electrode 22 (i.e., T12) in the second emitting electrode group 22b. Optionally, when a touch operation occurs, the first scanning signal input to each emitting electrode 22 in the first emitting electrode group 22a has a positive phase, and the second scanning signal input to each emitting electrode 22 in the second emitting electrode group 22b has a negative phase. In this case, the positive and negative changes in the mutual capacitance corresponding to the receiving electrode 21 below touch position TP3 or touch position TP4 cancel each other out.

[0117] This will cause the detection signal received by the touch chip 320 to remain substantially unchanged, resulting in missed touch position detection, which reduces the accuracy of touch detection.

[0118] Based on this, as shown in FIG14 , the touch detection method further includes: S15 , a second detection stage.

[0119] S15 , as shown in FIG. 10 and FIG. 12 , in the second detection phase, the touch control chip 320 outputs the same scanning signal to at least two adjacent emitting electrodes 22 at the junction of the first emitting electrode group 22 a and the second emitting electrode group 22 b .

[0120] At this time, in combination with (a) and (b) in Figure 10 and (a) and (b) in Figure 12, the touch position of the two adjacent transmitting electrodes 22 at the intersection of the first transmitting electrode group 22a and the second transmitting electrode group 22b is covered, and the change in the mutual capacitance caused by the change is positive or negative, and the positive and negative values ​​will not be offset to 0, thereby realizing the detection and identification of the touch position.

[0121] Exemplarily, the second detection phase is performed after S10 (i.e., the first detection phase). Furthermore, as shown in FIG14 , the second detection phase is performed before S20 (i.e., the touch chip 320 receives the detection signal from the receiving electrode 21). Alternatively, the second detection phase is performed before S30 (i.e., the touch chip 320 determines whether a touch event has been detected). In this case, an additional step can be added: the touch chip 320 receives the detection signal from the plurality of receiving electrodes 21 during the second detection phase.

[0122] By adding a second detection phase, the present embodiment can compensate for potential missed touch position detections during the first detection phase. In other words, the present embodiment can combine the detection signals corresponding to the first detection phase with those corresponding to the second detection phase to comprehensively determine whether a touch event has occurred. This significantly improves the accuracy of touch detection.

[0123] In some examples, the plurality of transmitting electrodes 22 may be further divided into at least one third transmitting electrode group 22c and at least one fourth transmitting electrode group 22d. That is, the number of third transmitting electrode groups 22c may be one, two, three, or even more; and the number of fourth transmitting electrode groups 22d may be one, two, three, or even more. The third transmitting electrode groups 22c and the fourth transmitting electrode groups 22d are alternately arranged along the extension direction of the receiving electrodes 21.

[0124] The third emitting electrode group 22c is composed of at least two consecutive emitting electrodes 22, and the fourth emitting electrode group 22d is composed of at least two consecutive emitting electrodes 22. That is, the third emitting electrode group 22c includes two, three, or even more consecutive emitting electrodes 22, and the fourth emitting electrode group 22d includes two, three, or even more consecutive emitting electrodes 22. This also means that there is no intersection between the third emitting electrode group 22c and the fourth emitting electrode group 22d.

[0125] The following schematically illustrates the grouping of transmitting electrodes with reference to the accompanying drawings. In Figures 10(a) and 12(a), there are 32 receiving electrodes 21 (R1, R2, R3, ..., R30, R31, R32), and 16 transmitting electrodes 22 (T1, T2, T3, ..., T14, T15, T16). In the touch layer 2 shown in Figure 10(a), there is one third transmitting electrode group 22c, which includes nine consecutive transmitting electrodes 22 (e.g., T1, T2, ..., T8, T9); and one fourth transmitting electrode group 22d, which includes seven consecutive transmitting electrodes 22 (e.g., T10, T11, ..., T15, T16). The third and fourth transmitting electrode groups 22c, 22d, are arranged sequentially along the extending direction of the receiving electrodes 21. In the touch layer 2 shown in FIG12( a ), there are two third emitting electrode groups 22 c , one of which includes three consecutive emitting electrodes 22 (e.g., T1, T2, and T3), and the other includes five consecutive emitting electrodes 22 (e.g., T12, T13, T14, T15, and T16). There is one fourth emitting electrode group 22 d , which includes eight consecutive emitting electrodes 22 (e.g., T4, T5, ..., T10, and T11). The fourth emitting electrode group 22 d is located between the two third emitting electrode groups 22 c .

[0126] In the above S15, in combination with (a) and (b) in FIG. 10 and (a) and (b) in FIG. 12 , the touch control chip 320 outputs the same scanning signal to at least two adjacent emitting electrodes 22 at the intersection of the first emitting electrode group 22a and the second emitting electrode group 22b, including: the touch control chip 320 outputs the first scanning signal to the emitting electrodes 22 in each third emitting electrode group 22c, and outputs the second scanning signal to the emitting electrodes 22 in each fourth emitting electrode group 22d. The at least two adjacent emitting electrodes 22 at the intersection of the first emitting electrode group 22a and the second emitting electrode group 22b are located in the same third emitting electrode group 22c or the same fourth emitting electrode group 22d.

[0127] Optionally, at least two adjacent emitting electrodes 22 at the junction of the first emitting electrode group 22a and the second emitting electrode group 22b are located in the same third emitting electrode group 22c. In this case, in the second detection phase, at least two adjacent emitting electrodes 22 at the junction of the first emitting electrode group 22a and the second emitting electrode group 22b can receive the first scanning signal.

[0128] For example, in conjunction with Figures 9 and 10, in the first detection phase, the two adjacent transmitting electrodes 22 at the junction of the first transmitting electrode group 22a and the second transmitting electrode group 22b are T8 and T9, respectively. In the second detection phase, the two transmitting electrodes 22 (i.e., T8 and T9) are located in the third transmitting electrode group 22c to receive the first scanning signal. For example, when a touch operation occurs, the first scanning signal input to each transmitting electrode 22 in the third transmitting electrode group 22c has a positive phase. In this case, the mutual capacitance corresponding to the receiving electrode 21 (i.e., R13) below the touch position TP3 changes, and the change is positive.

[0129] Optionally, at least two adjacent emitting electrodes 22 at the junction of the first emitting electrode group 22a and the second emitting electrode group 22b are located in the same fourth emitting electrode group 22d. In this case, in the second detection phase, at least two adjacent emitting electrodes 22 at the junction of the first emitting electrode group 22a and the second emitting electrode group 22b can receive the second scanning signal.

[0130] For example, with reference to Figures 11 and 12, in the first detection phase, the two adjacent transmitting electrodes 22 at the junction of the first transmitting electrode group 22a and the second transmitting electrode group 22b are T4 and T5, respectively. In the second detection phase, the two transmitting electrodes 22 (i.e., T4 and T5) are located in the fourth transmitting electrode group 22d to receive the second scanning signal. For example, when a touch operation occurs, the second scanning signal input to each transmitting electrode 22 in the fourth transmitting electrode group 22d has a negative phase. In this case, the mutual capacitance corresponding to the receiving electrode 21 (i.e., R13) below the touch position TP3 changes, and the change is negative.

[0131] In the embodiment of the present application, the multiple emitting electrodes 22 included in the display screen 310 are regrouped in the second detection stage, so that at least two emitting electrodes 22 adjacent to each other at the intersection of the first emitting electrode group 22a and the second emitting electrode group 22b in the first detection stage are located in the same third emitting electrode group 22c or the same fourth emitting electrode group 22d in the second detection stage. That is, the emitting electrodes included in the first emitting electrode group 22a and the emitting electrodes included in the third emitting electrode group 22c are partially repeated, and the emitting electrodes included in the second emitting electrode group 22b and the emitting electrodes included in the fourth emitting electrode group 22d are partially repeated. This can realize the detection and identification of any touch position on the entire screen, thereby improving the accuracy of touch detection.

[0132] In some embodiments, in the second detection phase, the absolute value of the difference between the number of emitting electrodes 22 receiving the first scanning signal and the number of emitting electrodes 22 receiving the second scanning signal is within a preset range.

[0133] Among them, the absolute value of the difference in the number of emitting electrodes 22 included in the third emitting electrode group 22c and the emitting electrodes 22 included in the fourth emitting electrode group 22d is set in the same way as the absolute value of the difference in the number of emitting electrodes 22 included in the first emitting electrode group 22a and the emitting electrodes 22 included in the first emitting electrode group 22b in some of the above embodiments. For details, please refer to the relevant descriptions in some of the above embodiments, and the steps are not repeated here.

[0134] It is understood that the division of the first emitting electrode group 22a and the second emitting electrode group 22b occurs during the first detection phase. That is, during the first detection phase, the portion of emitting electrodes 22 that receives the first scanning signal from the touch control chip 320 constitutes the first emitting electrode group 22a, and the portion of emitting electrodes 22 that receives the second scanning signal from the touch control chip 320 constitutes the second emitting electrode group 22b. The division of the third emitting electrode group 22c and the fourth emitting electrode group 22d occurs during the second detection phase. That is, during the second detection phase, the portion of emitting electrodes 22 that receives the first scanning signal from the touch control chip 320 constitutes the third emitting electrode group 22c, and the portion of emitting electrodes 22 that receives the second scanning signal from the touch control chip 320 constitutes the fourth emitting electrode group 22d. The division of the various groups is determined based on the detection phase and the received scanning signals.

[0135] In some embodiments, the above touch detection method is applied to a touch chip.

[0136] Based on this, some embodiments of the present application further provide a touch control chip 320, which is applied to an electronic device 1000 equipped with a display screen 310. The display screen 310 includes a plurality of transmitting electrodes 22 and a plurality of receiving electrodes 21. The touch control chip 320 is electrically connected to all of the plurality of transmitting electrodes 22 and all of the plurality of receiving electrodes 21. The plurality of transmitting electrodes 22 are divided into at least one first transmitting electrode group 22a and at least one second transmitting electrode group 22c. The first transmitting electrode group 22a is composed of at least two consecutive transmitting electrodes 22, and the second transmitting electrode group 22b is composed of at least two consecutive transmitting electrodes 22.

[0137] In some examples, the touch control chip 320 is configured to: during the first detection phase, output a first scanning signal to each emitting electrode 22 in the first emitting electrode group 22a, and output a second scanning signal to each emitting electrode 22 in the second emitting electrode group 22b. The second scanning signal is inverted from the first scanning signal.

[0138] In some examples, an absolute value of a difference between the number of transmitting electrodes receiving the first scan signal and the number of transmitting electrodes receiving the second scan signal is within a preset range.

[0139] Optionally, the number of transmitting electrodes receiving the first scanning signal is equal to the number of transmitting electrodes receiving the second scanning signal.

[0140] Optionally, the maximum value of the preset range is 40% of the maximum value between the number of transmitting electrodes receiving the first scanning signal and the number of transmitting electrodes receiving the second scanning signal.

[0141] In some examples, along the extension direction of the receiving electrode, the first transmitting electrode group and the second transmitting electrode group are alternately arranged.

[0142] In some examples, the touch control chip is further configured to: in the second detection phase, output the same scanning signal to at least two adjacent transmitting electrodes at the junction of the first transmitting electrode group and the second transmitting electrode group.

[0143] In some examples, the plurality of transmitting electrodes are further divided into at least one third transmitting electrode group and at least one fourth transmitting electrode group, where the third transmitting electrode group is composed of at least two consecutive transmitting electrodes, and the fourth transmitting electrode group is composed of at least two consecutive transmitting electrodes. During the second detection phase, the touch control chip is specifically configured to: output a first scanning signal to the transmitting electrodes in each third transmitting electrode group, and output a second scanning signal to the transmitting electrodes in each fourth transmitting electrode group. At least two adjacent transmitting electrodes at the junction of the first transmitting electrode group and the second transmitting electrode group are located in the same third transmitting electrode group or the same fourth transmitting electrode group.

[0144] In some examples, along the extension direction of the receiving electrode, the third transmitting electrode group and the fourth transmitting electrode group are alternately arranged.

[0145] In some examples, the touch control chip is specifically used to: output a first scanning signal to the transmitting electrodes in each first transmitting electrode group, and output a second scanning signal to the transmitting electrodes in each second transmitting electrode group in the first power consumption detection mode.

[0146] In some examples, the touch chip is also used to: receive detection signals from the multiple receiving electrodes; determine whether a touch event is detected based on the detection signal; after detecting the touch event, switch from a first power consumption detection mode to a second power consumption detection mode to obtain the touch coordinates of the touch event, the power consumption of the first power consumption detection mode being lower than the power consumption of the second power consumption detection mode.

[0147] For detailed description of various embodiments of the touch control chip 320 , please refer to the relevant description of the touch control detection method, which will not be repeated here.

[0148] Some embodiments of the present application further provide a display module 300, which can be, for example, the display module 300 shown in Figures 1 and 2. The display module 300 includes a display screen 310 and a touch chip 320. The display screen 310 includes a plurality of transmitting electrodes 22 and a plurality of receiving electrodes 21. The touch chip 320 is electrically connected to all of the plurality of transmitting electrodes 22 and all of the plurality of receiving electrodes 21. The touch chip 320 is configured to implement any of the touch detection methods described in some of the aforementioned embodiments.

[0149] Illustratively, the above-mentioned display module may be applied to the electronic device 1000 provided in an embodiment of the present application. The electronic device 1000 may be, for example, the electronic device 1000 shown in FIG. 1 .

[0150] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0151] Based on this, an embodiment of the present application further provides a computer-readable storage medium, which includes computer instructions. When the computer instructions are executed on a device, the device executes any one of the touch detection methods in the above examples.

[0152] An embodiment of the present application further provides a computer program product. When the computer program product is run on a computer, the computer is enabled to execute any one of the touch detection methods in the above examples.

[0153] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in this disclosure should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A touch detection method, characterized in that: Applicable to an electronic device equipped with a touch control chip and a display screen, the display screen includes a plurality of transmitting electrodes and a plurality of receiving electrodes, the touch control chip is electrically connected to all of the plurality of transmitting electrodes, and is electrically connected to all of the plurality of receiving electrodes; the plurality of transmitting electrodes are divided into at least one first transmitting electrode group and at least one second transmitting electrode group, the first transmitting electrode group is composed of at least two consecutive transmitting electrodes, and the second transmitting electrode group is composed of at least two consecutive transmitting electrodes; the touch control detection method includes a first detection stage; In the first detection phase, the touch control chip outputs a first scanning signal to each emitting electrode in the first emitting electrode group, and outputs a second scanning signal to each emitting electrode in the second emitting electrode group, wherein the second scanning signal is inverted to the first scanning signal.

2. The touch detection method according to claim 1, characterized in that: The touch detection method further includes a second detection stage; In the second detection stage, the touch control chip outputs the same scanning signal to at least two adjacent transmitting electrodes at the junction of the first transmitting electrode group and the second transmitting electrode group.

3. The touch detection method according to claim 2, characterized in that: The plurality of transmitting electrodes are further divided into at least one third transmitting electrode group and at least one fourth transmitting electrode group, the third transmitting electrode group is composed of at least two consecutive transmitting electrodes, and the fourth transmitting electrode group is composed of at least two consecutive transmitting electrodes; The touch control chip outputs the same scanning signal to at least two adjacent transmitting electrodes at the junction of the first transmitting electrode group and the second transmitting electrode group, including: The touch control chip outputs the first scanning signal to the transmitting electrodes in each of the third transmitting electrode groups, and outputs the second scanning signal to the transmitting electrodes in each of the fourth transmitting electrode groups; at least two adjacent transmitting electrodes at the junction of the first transmitting electrode group and the second transmitting electrode group are located in the same third transmitting electrode group or the same fourth transmitting electrode group.

4. The touch detection method according to claim 3, characterized in that: Along the extending direction of the receiving electrode, the third transmitting electrode group and the fourth transmitting electrode group are arranged alternately.

5. The touch detection method according to any one of claims 1 to 4, characterized in that: An absolute value of a difference between the number of transmitting electrodes receiving the first scanning signal and the number of transmitting electrodes receiving the second scanning signal is within a preset range.

6. The touch detection method according to claim 5, characterized in that: The number of transmitting electrodes receiving the first scanning signal is equal to the number of transmitting electrodes receiving the second scanning signal.

7. The touch detection method according to claim 5, characterized in that: The maximum value of the preset range is 40% of the maximum value of the number of transmitting electrodes receiving the first scanning signal and the number of transmitting electrodes receiving the second scanning signal.

8. The touch detection method according to any one of claims 1 to 7, characterized in that: Along the extending direction of the receiving electrode, the first transmitting electrode group and the second transmitting electrode group are arranged alternately.

9. The touch detection method according to any one of claims 1 to 8, characterized in that: The touch control chip outputs a first scanning signal to each transmitting electrode in the first transmitting electrode group, and outputs a second scanning signal to each transmitting electrode in the second transmitting electrode group, including: In a first power consumption detection mode, the touch control chip outputs the first scanning signal to each transmitting electrode in the first transmitting electrode group, and outputs the second scanning signal to each transmitting electrode in the second transmitting electrode group; The touch detection method further includes: The touch control chip receives detection signals from the plurality of receiving electrodes; The touch chip determines whether a touch event is detected based on the detection signal; After detecting a touch event, the touch chip switches from the first power consumption detection mode to the second power consumption detection mode to obtain touch coordinates of the touch event; the power consumption of the first power consumption detection mode is lower than that of the second power consumption detection mode.

10. A touch chip, characterized in that: Applicable to an electronic device equipped with a display screen, the display screen includes a plurality of transmitting electrodes and a plurality of receiving electrodes, the touch control chip is electrically connected to all of the plurality of transmitting electrodes, and is electrically connected to all of the plurality of receiving electrodes; the plurality of transmitting electrodes are divided into at least one first transmitting electrode group and at least one second transmitting electrode group, the first transmitting electrode group is composed of at least two consecutive transmitting electrodes, and the second transmitting electrode group is composed of at least two consecutive transmitting electrodes; The touch chip is used for: In the first detection phase, a first scanning signal is output to each emitting electrode in the first emitting electrode group, and a second scanning signal is output to each emitting electrode in the second emitting electrode group, wherein the second scanning signal is inverse to the first scanning signal.

11. The touch control chip according to claim 10, characterized in that: The touch control chip is further used for: in the second detection stage, the touch control chip outputs the same scanning signal to at least two adjacent emitting electrodes at the junction of the first emitting electrode group and the second emitting electrode group.

12. The touch control chip according to claim 11, characterized in that: The plurality of transmitting electrodes are further divided into at least one third transmitting electrode group and at least one fourth transmitting electrode group, the third transmitting electrode group is composed of at least two consecutive transmitting electrodes, and the fourth transmitting electrode group is composed of at least two consecutive transmitting electrodes; In the second detection stage, the touch control chip is specifically used to: output the first scanning signal to the transmitting electrodes in each of the third transmitting electrode groups, and output the second scanning signal to the transmitting electrodes in each of the fourth transmitting electrode groups; at least two adjacent transmitting electrodes at the junction of the first transmitting electrode group and the second transmitting electrode group are located in the same third transmitting electrode group or the same fourth transmitting electrode group.

13. The touch control chip according to claim 12, characterized in that: Along the extending direction of the receiving electrode, the third transmitting electrode group and the fourth transmitting electrode group are arranged alternately.

14. The touch control chip according to any one of claims 10 to 13, characterized in that: An absolute value of a difference between the number of transmitting electrodes receiving the first scanning signal and the number of transmitting electrodes receiving the second scanning signal is within a preset range.

15. The touch control chip according to claim 14, characterized in that: The number of transmitting electrodes receiving the first scanning signal is equal to the number of transmitting electrodes receiving the second scanning signal.

16. The touch control chip according to claim 14, characterized in that: The maximum value of the preset range is 40% of the maximum value of the number of transmitting electrodes receiving the first scanning signal and the number of transmitting electrodes receiving the second scanning signal.

17. The touch control chip according to any one of claims 10 to 16, characterized in that: Along the extending direction of the receiving electrode, the first transmitting electrode group and the second transmitting electrode group are arranged alternately.

18. The touch control chip according to any one of claims 10 to 17, characterized in that: The touch control chip is specifically used to: in the first power consumption detection mode, output a first scanning signal to each transmitting electrode in the first transmitting electrode group, and output a second scanning signal to each transmitting electrode in the second transmitting electrode group; The touch chip is also used to: receive detection signals from the multiple receiving electrodes; determine whether a touch event is detected based on the detection signals; and after detecting the touch event, switch from the first power consumption detection mode to the second power consumption detection mode to obtain the touch coordinates of the touch event, the power consumption of the first power consumption detection mode being lower than the power consumption of the second power consumption detection mode.

19. A display module, characterized in that: The display module comprises: A display screen, comprising a plurality of transmitting electrodes and a plurality of receiving electrodes; A touch control chip is electrically connected to the plurality of transmitting electrodes and the plurality of receiving electrodes; the touch control chip is used to implement the touch detection method according to any one of claims 1 to 9.

20. An electronic device, characterized in that: The electronic device includes a processor and a display module, wherein the processor is coupled to the display module; the display module includes the display module as claimed in claim 19.

21. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes computer instructions. When the computer instructions are executed on a device, the device executes the touch detection method according to any one of claims 1 to 9.

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