Display device and touch method

Abstract

The embodiment of the invention belongs to the display technology, and provides display equipment, a touch method, a storage medium and a program product. The display device comprises a capacitive screen which comprises a plurality of mutually parallel signal transmitting channels and a plurality of mutually parallel signal receiving channels; the signal generating channel and the signal receiving channel are perpendicular to each other to form a plurality of intersected nodes, and each node is coupled to form a capacitor; the control panel comprises a processor, a transmitting circuit and a receiving circuit, and the processor is configured to control the transmitting circuit to transmit a driving signal to each capacitor through the signal transmitting channel and control the plurality of receiving units to scan each capacitor respectively to obtain scanning data of each capacitor; and at the target moment, controlling one of the plurality of receiving units to scan capacitance in one area of the capacitive screen, and controlling the other one of the plurality of receiving units to send scanning data obtained before the target moment to the processor. In this way, the response speed of the capacitive screen can be effectively increased.

Description

Technical Field

[0001] This application relates to the field of display technology. More specifically, it relates to a display device and a touch method. Background Technology

[0002] With the development of display technology, display devices equipped with touch screens are becoming increasingly popular among users, who can control these devices via touch.

[0003] Among current touch technologies, capacitive touch technology has achieved good user experience on small and medium-sized display devices. However, with the increasing size of electronic devices, the touch response speed is slow, resulting in a poor user experience. Summary of the Invention

[0004] This application provides a display device and a touch method to improve touch response speed and enhance user experience.

[0005] In a first aspect, embodiments of this application provide a display device, the display device comprising:

[0006] A capacitive touchscreen includes multiple signal transmission channels that are parallel to each other, and multiple signal receiving channels that are also parallel to each other; the signal transmission channels and the signal receiving channels are perpendicular to each other, forming multiple intersecting nodes, and the signal transmission channel and the signal receiving channel at each node form a capacitor;

[0007] The control board includes a processor, and a transmitting circuit and a receiving circuit respectively connected to the processor, the receiving circuit including multiple receiving units;

[0008] The processor is configured to control the transmitting circuit to send a drive signal to each of the capacitors through the signal transmitting channel, and to control the plurality of receiving units to scan each of the capacitors respectively to obtain scan data of each of the capacitors;

[0009] The processor is also configured to, at a target time, control one of the plurality of receiving units to scan the capacitance in a region of the capacitive touchscreen, and control another of the plurality of receiving units to send the scan data obtained before the target time to the processor.

[0010] In some embodiments, the processor is configured to:

[0011] Control the first receiving unit among the plurality of receiving units to scan the capacitance of the first area of ​​the capacitive screen;

[0012] At the target time when the first receiving unit scans and obtains the scan data of the capacitance of the first region, the first receiving unit is controlled to send the scan data to the processor, and the second receiving unit among the plurality of receiving units is controlled to scan the capacitance of the second region of the capacitive screen.

[0013] In some embodiments, the receiving unit is configured to:

[0014] When the first receiving unit obtains the scan data of the capacitance in the first area of ​​the capacitive screen, it sends a first interrupt signal to the processor, so that the processor controls the first receiving unit to send the scan data to the processor according to the first interrupt signal, and controls the second receiving unit to scan the capacitance in the second area of ​​the capacitive screen.

[0015] In some embodiments, the receiving unit is configured to:

[0016] When the second receiving unit obtains the scan data of the capacitance in the second area, it sends a second interrupt signal to the processor, so that the processor controls the second receiving unit to send the scan data to the processor according to the second interrupt signal, and controls the third receiving unit to scan the capacitance in the third area of ​​the capacitive screen;

[0017] or,

[0018] When the first receiving unit finishes sending the scan data to the processor, it sends a third interrupt signal to the processor, so that the processor controls the second receiving unit to send the scan data to the processor according to the third interrupt signal, and controls the third receiving unit to scan the capacitance of the third area of ​​the capacitive screen.

[0019] In some embodiments, if the currently scanned area is the last area of ​​the capacitive screen, then the next scanned area is the first area of ​​the capacitive screen.

[0020] In some embodiments, the processor is further configured to:

[0021] When the display device is powered on, the target receiving unit among the plurality of receiving units is controlled to scan the capacitance of the target area of ​​the capacitive screen; the target area is the area with the most receiving channels.

[0022] Calculate the scanning time of the capacitance of the target area, and the transmission time of the scan data of the capacitance of the target area;

[0023] If the scanning time is greater than the transmission time, then when the second receiving unit scans and obtains the scanning data of the capacitor in the second region, it sends a second interrupt signal to the processor.

[0024] If the scanning time is less than or equal to the transmission time, then when the first receiving unit finishes sending the scanning data to the processor, it sends a third interrupt signal to the processor.

[0025] In some embodiments, the processor is further configured to:

[0026] Real-time detection to determine whether the received scan data includes the scan data of the last region;

[0027] If included, it is determined that a frame of scan data from the capacitive touchscreen has been obtained;

[0028] Based on the preset capacitance value and the capacitance value included in the scan data of a frame, coordinate point positioning is performed;

[0029] If not included, then wait to receive scan data from the last region.

[0030] In some embodiments, the processor is further configured to:

[0031] The number of signal transmission channels and signal reception channels of the capacitive touchscreen, as well as the capability information of the transmission unit and the reception unit, are obtained; the capability information is used to indicate the maximum number of transmission channels and signal reception channels supported by the transmission unit and the reception unit.

[0032] Based on the quantity and the capability information, the number of transmitting units and receiving units used for functional control of the capacitive touchscreen is determined.

[0033] Secondly, embodiments of this application provide a touch control method applied to a display device, the display device comprising:

[0034] A capacitive touchscreen includes multiple signal transmission channels that are parallel to each other, and multiple signal receiving channels that are also parallel to each other; the signal transmission channels and the signal receiving channels are perpendicular to each other, forming multiple intersecting nodes, and the signal transmission channel and the signal receiving channel at each node form a capacitor;

[0035] The control board includes a transmitting circuit and a receiving circuit, the receiving circuit including multiple receiving units; the method includes:

[0036] The transmitting circuit is controlled to send a drive signal to each capacitor through the signal transmitting channel, and the plurality of receiving units are controlled to scan each capacitor respectively to obtain scan data of each capacitor;

[0037] At the target time, one of the multiple receiving units is controlled to scan the capacitance in a region of the capacitive touchscreen, and another receiving unit is controlled to send the scan data obtained before the target time to the processor.

[0038] Thirdly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the second aspect and / or various possible implementations of the second aspect.

[0039] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the second aspect and / or various possible implementations of the second aspect as described above.

[0040] This application provides a display device and a touch control method. The display device includes: a capacitive screen, comprising multiple parallel signal transmission channels and multiple parallel signal receiving channels; the signal transmission channels and the signal receiving channels are perpendicular to each other, forming multiple intersecting nodes, and the signal transmission channel and the signal receiving channel at each node form a capacitor; a control board, comprising a transmitting circuit and a receiving circuit, the receiving circuit comprising multiple receiving units; the method includes: controlling the transmitting circuit to send a driving signal to each capacitor through the signal transmission channels, and controlling the multiple receiving units to scan each capacitor respectively to obtain scan data for each capacitor; at a target time, controlling one of the multiple receiving units to scan the capacitors in a region of the capacitive screen, and controlling another receiving unit to send the scan data obtained before the target time to the processor. In the above method, by setting the scanning of the region capacitors and the scanning data of the region capacitors as a parallel mechanism, the time consumption for locating the touch point can be effectively reduced, and the touch response speed can be improved. Attached Figure Description

[0041] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0042] Figure 1 This is a schematic diagram of a display scenario provided in an embodiment of this application;

[0043] Figure 2 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0044] Figure 3 This is a schematic diagram of the structure of a capacitive touchscreen;

[0045] Figure 4 This is a schematic diagram of the structure of a capacitive touchscreen provided in an embodiment of this application;

[0046] Figure 5 This is a schematic diagram of a touch positioning process provided in an embodiment of this application;

[0047] Figure 6 A timing control diagram for scanning and transmission provided in an embodiment of this application. Figure 1 ;

[0048] Figure 7 A timing control diagram for scanning and transmission provided in an embodiment of this application. Figure 2 ;

[0049] Figure 8 A timing control diagram for scanning and transmission provided in an embodiment of this application. Figure 3 ;

[0050] Figure 9 A flowchart illustrating a touch control method provided in an embodiment of this application;

[0051] Figure 10 This is a schematic diagram of the structure of a touch device provided in an embodiment of this application.

[0052] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0053] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0054] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0055] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0056] A capacitive touch panel, also known as a capacitive touch screen, is a sensor-based display device that can receive input signals from touch points. It simplifies human-computer interaction and greatly enhances the user experience.

[0057] Figure 1 This is a schematic diagram illustrating an operation scenario of a display device provided in an embodiment of this application. Figure 1 As shown,

[0058] Users can control the display device 200 by sending user commands to the display device via touch.

[0059] Figure 2 This is a schematic diagram of the structure of a display device. For example... Figure 2 As shown, the display device may include a processor, a touch component, and a display screen.

[0060] The aforementioned touch component may include a control board, a driving electrode layer, and a sensing electrode layer. The driving electrode layer and the sensing electrode layer are located on the upper side of the display screen. This application does not limit the hierarchical relationship between the driving electrode layer and the sensing electrode layer.

[0061] When a user touches the display screen, the control board can obtain information related to the touch location, determine the touch position based on this information, and send the touch position to the processor (display device control system processor). The processor can then respond to the operation corresponding to that touch position. Through this process, touch interaction can be achieved.

[0062] In some embodiments, the display screen is used to display images. Exemplarily, the display screen may include a display panel. The display panel may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a Mini LED, a MicroLED, a Micro-OLED, a quantum dot light-emitting diode (QLED), etc. In some embodiments, the above-described touch device may include one or more display screens.

[0063] In some embodiments, the processor may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processing component may integrate one or a combination of several of a Central Processing Unit (CPU), Graphics Processing Unit (GPU), Microcontroller Unit (MCU), and modem. The CPU may handle the operating system, user interface, and applications. The GPU may be used to render and draw the content required for display on the screen. The modem may be used to handle wireless communication. It is understood that the modem may also be implemented as a separate chip without being integrated into the processing component.

[0064] The display device provided in this application can have various implementation forms, such as a smart TV, a laser projection device, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 and Figure 2 This is one specific embodiment of the display device of this application.

[0065] Among current capacitive touch technologies, capacitive touch technology is widely accepted by users for its excellent user experience in small and medium-sized products.

[0066] Figure 3 This is a schematic diagram of a screen for a display device employing capacitive touch technology, such as... Figure 3 As shown, multiple signal transmission channels (TX channels, also known as driving channels or driving electrodes) and multiple signal receiving channels (RX channels, also known as sensing channels or sensing electrodes) are made in the screen using indium tin oxide (ITO), metal mesh, or nano-silver. The multiple signal transmission channels are parallel to each other, the multiple signal receiving channels are parallel to each other, and the signal transmission channels and signal receiving channels are perpendicular to each other, forming multiple intersecting nodes, with each node coupled into a capacitor.

[0067] After the display device is powered on, the screen's control unit (e.g., a microcontroller (MCU)) can control the signal transmitting unit (TX end) to sequentially send drive signals through the signal transmitting channel to charge each capacitor. Simultaneously, the control unit can control the receiving unit (RX end) to scan the capacitors at each node through the signal receiving channel and send the scanned capacitors at each node to the control unit. Here, the TX end can be a TX front-end analog device (Active Front End, AFE), and the RX end can be an RX AFE.

[0068] When the user is not touching the screen, the capacitance value at each node is basically the same. When the user touches the screen, it affects the coupling between TX and RX at the node corresponding to the touch position, thus affecting the capacitance (value) of that node. When the control unit receives the capacitance of each node sent by the receiving unit, it can locate the touch position based on the capacitance value of each node. That is, the current sequence of locating the touch position is: the receiving unit scans the capacitance of each node (scanning process), the receiving unit sends the scanned capacitance of each node to the control unit (transmission process), and the control unit performs positioning calculation based on the received capacitance of each node (calculation process). The positioning calculation time is the sum of the above three processes.

[0069] As the size and touch accuracy requirements of capacitive screens increase, the number of signal transmission and reception channels also increases. The time spent scanning and transmitting data to each node capacitor is getting longer, resulting in longer positioning time, slower response to user touch, and a poorer user experience.

[0070] In view of this, embodiments of this application provide a display device, a touch method, a storage medium, and a program product. By dividing the display screen into multiple areas, the scanning process and the transmission process process different areas simultaneously, which can effectively reduce the positioning time of the touch position, improve the response speed to user touch, and thus improve the user experience.

[0071] The technical solutions of this application will be described in detail below with reference to specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. In the description of this application, unless otherwise expressly specified and limited, the terms should be broadly understood within the art. The embodiments of this application will now be described with reference to the accompanying drawings.

[0072] Figure 4 This is a schematic diagram of the structure of a display device provided in an embodiment of this application, such as... Figure 4 As shown, the display device includes:

[0073] A capacitive touchscreen includes multiple signal transmission channels that are parallel to each other, and multiple signal receiving channels that are also parallel to each other. The signal transmission channels and the signal receiving channels are perpendicular to each other, forming multiple intersecting nodes. At each node, the signal transmission channel and the signal receiving channel form a capacitor.

[0074] A control board includes a processor (e.g., a processor dedicated to touch recognition), a transmitting circuit, and a receiving circuit, each connected to the processor. The transmitting circuit includes multiple transmitting units, and the receiving circuit includes multiple receiving units. Figure 4 The diagram illustrates a transmitting circuit comprising two transmitting units (also known as signal transmitting units) and a receiving circuit comprising two receiving units (also known as signal receiving units). It should be understood that the control board may be a control unit specifically designed for touch positioning.

[0075] by Figure 4 For example, transmitting unit 1 is connected to a portion of the transmitting channels in the capacitive screen, transmitting unit 2 is connected to another portion of the transmitting channels in the capacitive screen, receiving unit 1 is connected to a portion of the receiving channels in the capacitive screen, and receiving unit 2 is connected to another portion of the receiving channels in the capacitive screen.

[0076] After the display device is powered on, the processor can control transmitting unit 1 and transmitting unit 2 to send drive signals to each capacitor through the connected transmitting channel, thereby charging each capacitor. The processor can also receive scanning data of each capacitor from transmitting unit 1 and receiving unit 2 through the connected receiving channel.

[0077] In some embodiments, to improve the speed of touch location positioning, the processor can divide the display screen into N regions. For example, the processor can divide the display screen into a corresponding number of regions based on the number of receiving units, such as... Figure 4 As shown, the control board includes two receiving units, which can divide the display screen into two areas, ph0 and ph1. Each area includes all the receiving channels corresponding to each receiving unit.

[0078] In some embodiments, when the processor controls each receiving unit to scan the capacitance of its corresponding area and transmit the corresponding scan data, at a target time, it controls one of the multiple receiving units to scan the capacitance of a region of the capacitive touchscreen, and controls another receiving unit among the multiple receiving units to send the scan data obtained before the target time to the processor.

[0079] For example, such as Figure 4 As shown, the processor can control the first receiving unit (e.g., signal receiving unit 1) among the plurality of receiving units to scan the capacitance of the first region (e.g., ph0 region) of the capacitive screen. At the target time when the first receiving unit obtains the scan data of the capacitance of the first region, the processor can control the first receiving unit to send the scan data to the processor, and control the second receiving unit (e.g., signal receiving unit 2) among the plurality of receiving units to scan the capacitance of the second region (e.g., ph1 region) of the capacitive screen.

[0080] Simultaneously, the processor continuously monitors whether it has received scan data from the last region. If so, it determines that a complete frame of scan data has been received. The processor can then process the received scan data using a preset algorithm to determine if a touch location exists. For example, if the processor determines, based on the scan data, that the difference between the capacitance value at a certain capacitor and the capacitance values ​​at other capacitors is greater than a preset threshold, then the location corresponding to that capacitor can be identified as a touch point. When the processor determines the location of the touch point, it can report the point to the control system of the display device, enabling the control system (the processor of the control system) to respond to the touch point.

[0081] The display device provided in this application divides the capacitive screen into multiple regions. At a target time, the processor controls one of the multiple receiving units to scan the capacitance within one region of the capacitive screen, and controls another receiving unit to send the scan data obtained before the target time to the processor. By setting the scanning of the region capacitance and the scanning data of the region capacitance as a parallel mechanism, the time spent locating the touch point can be effectively reduced, and the touch response speed can be improved.

[0082] Based on the above embodiments, the complete process of the processor controlling the receiving unit to perform capacitance scanning and upload scan data will be described below.

[0083] Figure 5 This is a schematic diagram of a touch positioning process provided in an embodiment of this application, such as... Figure 5 As shown, it includes the following steps:

[0084] S1. The processor configures the correspondence between the transmitting unit and the receiving unit and the signal transmitting channel and the signal receiving unit.

[0085] In some embodiments, the control board includes multiple transmitting units and receiving units. The processor can obtain the number of signal transmitting channels and signal receiving channels of the capacitive touchscreen, as well as the capability information of the transmitting units and the receiving units. The capability information is used to indicate the maximum number of transmitting channels and signal receiving channels supported by the transmitting units and the receiving units. Based on the number and the capability information, the number of transmitting units and receiving units used for functional control of the capacitive touchscreen is determined.

[0086] For example, a capacitive touchscreen includes 108 signal transmission channels and 108 signal reception channels. The control board includes 4 transmission units and 4 reception units. Each reception unit can control up to 54 reception channels, and each transmission unit can control up to 54 transmission channels. Therefore, the processor can determine to use 2 transmission units and 2 reception units to perform signal transmission and capacitance detection for the capacitive touchscreen.

[0087] It should be understood that the processor can randomly select 2 transmitting units and 2 receiving units from 4 transmitting units and 4 receiving units to perform signal transmission and capacitance detection for the capacitive touchscreen.

[0088] S2. The processor determines the scanning method of the capacitor and the transmission method of the scan data.

[0089] In some embodiments, the capacitor scanning method and the scan data transmission method may refer to how to start scanning or transmitting data to the next area when performing capacitor scanning and scan data transmission.

[0090] In some embodiments, since the scanning time for scanning a region is different from the transmission time for transmitting a region, the processor can determine the scanning method for capacitors and the transmission method for scan data based on the scanning time for capacitors in the target region and the transmission time for scanning data.

[0091] For example, when the display device is powered on, the processor can control the target receiving unit among the plurality of receiving units to scan the capacitance of a target area of ​​the capacitive touchscreen; the target area is the area with the most receiving channels; the processor calculates the scanning time for scanning the capacitance of the target area and the transmission time for transmitting the scanned data of the capacitance of the target area. If the scanning time is greater than the transmission time, the capacitor scanning method and the scanned data transmission method shown in S3, S4, and S5 are executed; if the scanning time is less than or equal to the transmission time, the capacitor scanning method and the scanned data transmission method shown in S3, S4, and S6 are executed.

[0092] For example, such as Figure 4 As shown, the processor divides the capacitive screen into two regions, ph0 and ph1. The ph0 region includes 12 receiving channels, and the ph1 region includes 11 receiving channels. The processor can use the ph0 region as the target region.

[0093] The processor can send a scan command to the signal receiving unit 1 corresponding to region ph0 and start a timer. When the signal receiving unit 1 receives the scan command, it begins scanning the capacitors in region ph0 and sends an interrupt signal to the processor when the scan is complete. When the processor receives the interrupt signal, it stops the timer, obtaining the scan time (also known as the scan duration) of region ph0. Simultaneously, the processor sends a data transmission command to the signal receiving unit 1. When the signal receiving unit 1 receives the data transmission command, it begins transmitting the obtained scan data and sends an interrupt signal to the processor when the data transmission is complete. When the processor receives the interrupt signal, it stops the timer, obtaining the transmission time (also known as the transmission duration) of region ph0. If the scan time of region ph0 is greater than the transmission time of region ph0, the processor can execute steps S3, S4, and S5. If the scan time of region ph0 is less than or equal to the transmission time of region ph0, the processor can execute steps S3, S4, and S6.

[0094] It should be understood that steps S1 and S2 can be performed after the display device is powered on for the first time. After the correspondence between the transmitting unit and receiving unit and the signal transmitting channel and signal receiving unit, as well as the scanning method of the capacitor and the transmission method of the scanning data, are determined, the correspondence and method determined in the first instance can be used directly to execute steps S3, S4, and S5 or steps S3, S4, and S6 after subsequent power-on.

[0095] Optionally, the steps shown in S1 and S2 can also be predefined in the processor after the display device leaves the factory. After the display device is powered on, the predefined relationships and methods can be used directly to execute the steps shown in S3, S4, S5 or S3, S4, S6.

[0096] S3. The processor controls the first receiving unit to scan the capacitance of the first region.

[0097] When the display device starts working, the processor can send a scan command to the first receiving unit to scan the capacitance of the first region. When the first receiving unit receives the scan command, it performs a scan of the capacitance of the first region.

[0098] S4. When the first receiving unit scans and obtains the scan data of the capacitance in the first area of ​​the capacitive screen, it sends a first interrupt signal to the processor, so that the processor controls the first receiving unit to send the scan data to the processor according to the first interrupt signal, and controls the second receiving unit to scan the capacitance in the second area of ​​the capacitive screen.

[0099] When the first receiving unit completes the scanning of the capacitance of the first region, it can send a first interrupt signal to the processor. When the processor receives the first interrupt signal, it sends a data transmission instruction to the first receiving unit and simultaneously sends a data scanning instruction to the second receiving unit.

[0100] When the first receiving unit receives a data transmission instruction, it sends scan data of the capacitance of the first region to the processor. When the second receiving unit receives a scan instruction, it scans the capacitance of the second region.

[0101] S5. When the second receiving unit scans and obtains the scan data of the capacitor in the second area, it sends a second interrupt signal to the processor, so that the processor controls the second receiving unit to send the scan data to the processor according to the second interrupt signal, and controls the third receiving unit to scan the capacitor in the third area of ​​the capacitive screen.

[0102] Since the scanning time is greater than the transmission time, the processor can use a scan interrupt to communicate with the receiving unit, as shown below:

[0103] When the second receiving unit completes the scanning of the second region capacitance, it can send a second interrupt signal to the processor. When the processor receives the second interrupt signal, it sends a data transmission instruction to the second receiving unit and simultaneously sends a data scanning instruction to the third receiving unit.

[0104] When the second receiving unit receives a data transmission instruction, it sends scan data of the capacitance of the second region to the processor. When the third receiving unit receives a scan instruction, it scans the capacitance of the third region.

[0105] In some embodiments, if the capacitive screen includes only two areas, the second area is the last area of ​​the capacitive screen, and the third area is the first area of ​​the capacitive screen. That is, the processor sequentially polls each area of ​​the capacitive screen using the above-described scanning and data transmission method. If the current area is the last scanned area, the next scanned area is the first area of ​​the capacitive screen.

[0106] Figure 6 This is a timing control diagram for scanning and transmission provided in an embodiment of this application. The capacitive touchscreen includes a first region and a second region, as shown below. Figure 6 As shown, at time T1, the scanning of the first region is completed, interruption triggers the data transmission of the first region and the scanning of the second region. At time T2, the scanning of the second region is completed, interruption triggers the data transmission of the second region and the scanning of the first region. At time T3, the scanning of the first region is completed, interruption triggers the data transmission of the first region and the scanning of the second region again, and so on.

[0107] S6. When the first receiving unit finishes sending the scan data to the processor, it sends a third interrupt signal to the processor, so that the processor controls the second receiving unit to send the scan data to the processor according to the third interrupt signal, and controls the third receiving unit to scan the capacitance of the third area of ​​the capacitive screen.

[0108] Since the transmission time is greater than the scanning time, the processor can use a transmission interrupt to communicate with the receiving unit, thereby reducing unnecessary waiting time, as shown below:

[0109] When the first receiving unit completes the transmission of the first area scan data, it can send a third interrupt signal to the processor. When the processor receives the third interrupt signal, it sends a data transmission instruction to the second receiving unit and simultaneously sends a data scan instruction to the third receiving unit.

[0110] When the second receiving unit receives a data transmission instruction, it sends scan data of the capacitance of the second region to the processor. When the third receiving unit receives a scan instruction, it scans the capacitance of the third region.

[0111] In some embodiments, if the capacitive screen includes only two areas, the second area is the last area of ​​the capacitive screen, and the third area is the first area of ​​the capacitive screen. That is, the processor sequentially polls each area of ​​the capacitive screen using the above-described scanning and data transmission method. If the current area is the last scanned area, the next scanned area is the first area of ​​the capacitive screen.

[0112] Figure 7 This is a timing control diagram for scanning and transmission provided in an embodiment of this application. The capacitive touchscreen includes a first region and a second region, as shown below. Figure 7As shown, at time T1, the scanning of the first region is completed, interruption triggers the data transmission of the first region and the scanning of the second region. At time T2, the data transmission of the first region is completed, interruption triggers the data transmission of the second region and the scanning of the first region. At time T3, the data transmission of the second region is completed, interruption triggers the data transmission of the first region and the scanning of the second region again, and so on.

[0113] In some embodiments, when the first receiving unit or the second receiving unit scans the capacitance of its respective corresponding region, it can store the scanned data in its respective corresponding storage space (e.g., RAM region). This storage space can be a predefined storage space for the first receiving unit or the second receiving unit, or a storage space allocated by the processor for the first receiving unit or the second receiving unit. When the first receiving unit or the second receiving unit receives a data transmission instruction, it can read the scanned data from its respective corresponding storage space and transmit it to the processor.

[0114] In some embodiments, when the processor interacts with each receiving unit, it can also poll and monitor in real time whether the scan data of the last area of ​​the capacitive screen has been received. If the scan data of the last area has not been received, it continues to wait. If the scan data of the last area has been received, it can be determined that a complete frame of scan data of the capacitive screen has been obtained. Then, based on the received frame of scan data, the touch point is calculated. If the calculation result indicates that there is a touch point in the data of the current frame, the processor sends the position of the touch point to the control system of the display device so that the control system of the display device can respond to the touch point.

[0115] For example, such as Figure 8 As shown, the capacitive screen includes a first area and a second area. The scanning of the first area begins at time T0. The scanning of the first area is completed at time T1. An interrupt triggers the data transmission of the first area and the scanning of the second area. The scanning of the second area is completed at time T2. An interrupt triggers the data transmission of the second area and the scanning of the first area. The data transmission of the second area is completed at time T3. The processor starts calculating the positioning point. The positioning point of the first frame of scan data is completed at time T4. The point is reported.

[0116] While the processor begins calculating the positioning points, the scanning and transmission of the second frame of data also occur simultaneously. At time T6, the positioning points of the second frame of scanned data are completed, and the points are reported. This method not only reduces the time spent on scanning, transmitting, and calculating the points for the first frame of data, but also significantly reduces the time spent on scanning, transmitting, and calculating the points for subsequent frames, thereby greatly reducing the response speed of the capacitive screen and improving the user experience.

[0117] Based on the above embodiments, this application also provides a touch method applied to the display device shown in any of the above embodiments. The execution entity of the touch method provided in this application can be the processor in the control board of the display device in the above embodiments.

[0118] Figure 9 This is a flowchart illustrating the touch method provided in an embodiment of this application, as shown below. Figure 9 As shown, it includes:

[0119] S901, control the transmitting circuit to send a driving signal to each capacitor through the signal transmitting channel, and control the plurality of receiving units to scan each capacitor respectively to obtain scan data of each capacitor.

[0120] S902. At the target time, control one of the plurality of receiving units to scan the capacitance in a region of the capacitive screen, and control another of the plurality of receiving units to send the scan data obtained before the target time to the processor.

[0121] In some embodiments, the processor controls a first receiving unit among the plurality of receiving units to scan the capacitance of a first region of the capacitive touchscreen; at a target time when the first receiving unit obtains scan data of the capacitance of the first region, the processor controls the first receiving unit to send the scan data to the processor, and controls a second receiving unit among the plurality of receiving units to scan the capacitance of a second region of the capacitive touchscreen.

[0122] In some embodiments, when the display device is powered on, the processor controls a target receiving unit among the plurality of receiving units to scan the capacitance of a target area of ​​the capacitive touchscreen; the target area is the area with the most receiving channels; the processor calculates the scanning time for scanning the capacitance of the target area and the transmission time for transmitting the scanned data of the capacitance of the target area; if the scanning time is greater than the transmission time, then when the second receiving unit scans and obtains the scanned data of the capacitance in the second area, it sends a second interrupt signal to the processor; if the scanning time is less than or equal to the transmission time, then when the first receiving unit finishes sending the scanned data to the processor, it sends a third interrupt signal to the processor.

[0123] In some embodiments, the processor detects in real time whether the received scan data includes scan data of the last region; if it does, it determines that a frame of scan data of the capacitive touchscreen has been acquired; and performs coordinate point positioning based on a preset capacitance value and the capacitance value included in the frame of scan data; if it does not, it waits to receive scan data of the last region.

[0124] In some embodiments, the processor acquires the number of signal transmission channels and signal reception channels of the capacitive touchscreen, as well as the capability information of the transmission unit and the reception unit; the capability information is used to indicate the maximum number of transmission channels and signal reception channels supported by the transmission unit and the reception unit; and based on the number and the capability information, determines the number of transmission units and reception units used for functional control of the capacitive touchscreen.

[0125] The specific implementation of each step in the touch method provided in this application embodiment can be referred to the corresponding specific implementation in the foregoing embodiment, and will not be repeated here.

[0126] Based on the above embodiments, this application also provides a touch device that is applied to the display device in any of the above embodiments.

[0127] Figure 10 This is a schematic diagram of the structure of the touch device provided in the embodiments of this application, such as... Figure 10 As shown, it includes:

[0128] The control module 1001 is used to control the transmitting circuit to send a driving signal to each of the capacitors through the signal transmitting channel, and to control the plurality of receiving units to scan each of the capacitors respectively to obtain scan data of each of the capacitors.

[0129] The processing module 1002 is used to control one of the plurality of receiving units to scan the capacitance in a region of the capacitive screen at a target time, and to control another receiving unit among the plurality of receiving units to send the scan data obtained before the target time to the processor.

[0130] The touch device provided in this application embodiment can execute the touch method in any of the above embodiments, and its principle and technical effect are similar, so they will not be described again here.

[0131] It should be noted that the division of the various modules in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. These modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented in software via processing element calls, while others are implemented in hardware. Each module can be a separate processing element, or it can be integrated into a chip within the device. Alternatively, it can be stored as program code in the device's memory, and its functions can be called and executed by a processing element. Furthermore, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each of the above modules can be completed through integrated logic circuits in the processor element or through software instructions.

[0132] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0133] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0134] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0135] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0136] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0137] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0138] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0139] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0140] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A display device, characterized in that, The display device includes: A capacitive touchscreen includes multiple parallel signal transmitting channels and multiple parallel signal receiving channels. The signal transmitting channels and the signal receiving channels are perpendicular to each other, forming multiple intersecting nodes. At each node, the signal transmitting channel and the signal receiving channel are coupled into a capacitor. The control board includes a processor, and a transmitting circuit and a receiving circuit respectively connected to the processor, the receiving circuit including multiple receiving units; The processor is configured to control the transmitting circuit to send a drive signal to each of the capacitors through the signal transmitting channel, and to control the plurality of receiving units to scan each of the capacitors respectively to obtain scan data of each of the capacitors; The processor is also configured to, at a target time, control one of the plurality of receiving units to scan the capacitance in a region of the capacitive touchscreen, and control another of the plurality of receiving units to send the scan data obtained before the target time to the processor.

2. The display device according to claim 1, characterized in that, The processor is configured to: Control the first receiving unit among the plurality of receiving units to scan the capacitance of the first area of ​​the capacitive screen; At the target moment when the first receiving unit scans the scan data of the capacitance of the first region, the first receiving unit is controlled to send the scan data to the processor, and the second receiving unit among the plurality of receiving units is controlled to scan the capacitance of the second region of the capacitive screen.

3. The display device according to claim 2, characterized in that, The receiving unit is configured as follows: When the first receiving unit obtains the scan data of the capacitance in the first area of ​​the capacitive screen, it sends a first interrupt signal to the processor, so that the processor controls the first receiving unit to send the scan data to the processor according to the first interrupt signal, and controls the second receiving unit to scan the capacitance in the second area of ​​the capacitive screen.

4. The display device according to claim 3, characterized in that, The receiving unit is configured as follows: When the second receiving unit obtains the scan data of the capacitance in the second area, it sends a second interrupt signal to the processor, so that the processor controls the second receiving unit to send the scan data to the processor according to the second interrupt signal, and controls the third receiving unit to scan the capacitance in the third area of ​​the capacitive screen; or, When the first receiving unit finishes sending the scan data to the processor, it sends a third interrupt signal to the processor, so that the processor controls the second receiving unit to send the scan data to the processor according to the third interrupt signal, and controls the third receiving unit to scan the capacitance of the third area of ​​the capacitive screen.

5. The display device according to claim 4, characterized in that, If the currently scanned area is the last area of ​​the capacitive screen, then the next scanned area will be the first area of ​​the capacitive screen.

6. The display device according to claim 4, characterized in that, The processor is also configured to: When the display device is powered on, the target receiving unit among the plurality of receiving units is controlled to scan the capacitance of the target area of ​​the capacitive screen; the target area is the area with the most receiving channels. Calculate the scanning time of the capacitance of the target area, and the transmission time of the scan data of the capacitance of the target area; If the scanning time is greater than the transmission time, then when the second receiving unit scans and obtains the scanning data of the capacitor in the second region, it sends a second interrupt signal to the processor. If the scanning time is less than or equal to the transmission time, then when the first receiving unit finishes sending the scanning data to the processor, it sends a third interrupt signal to the processor.

7. The display device according to claim 1, characterized in that, The processor is configured to: Real-time detection to determine whether the received scan data includes the scan data of the last region; If included, it is determined that a frame of scan data from the capacitive touchscreen has been obtained; Based on the preset capacitance value and the capacitance value included in the scan data of a frame, coordinate point positioning is performed; If not, then wait to receive scan data from the last region.

8. The display device according to claim 1, characterized in that, The processor is configured to: The number of signal transmission channels and signal reception channels of the capacitive touchscreen, as well as the capability information of the transmission unit and the reception unit, are obtained; the capability information is used to indicate the maximum number of transmission channels and signal reception channels supported by the transmission unit and the reception unit. Based on the quantity and the capability information, the number of transmitting units and receiving units used for functional control of the capacitive touchscreen is determined.

9. A touch control method, characterized in that, Applied to a display device, the display device comprising: A capacitive touchscreen includes multiple parallel signal transmitting channels and multiple parallel signal receiving channels. The signal transmitting channels and the signal receiving channels are perpendicular to each other, forming multiple intersecting nodes. At each node, the signal transmitting channel and the signal receiving channel are coupled into a capacitor. The control board includes a transmitting circuit and a receiving circuit, the receiving circuit including multiple receiving units; the method includes: The transmitting circuit is controlled to send a drive signal to each capacitor through the signal transmitting channel, and the plurality of receiving units are controlled to scan each capacitor respectively to obtain scan data of each capacitor; At the target time, one of the multiple receiving units is controlled to scan the capacitance in a region of the capacitive touchscreen, and another receiving unit is controlled to send the scan data obtained before the target time.

10. The method according to claim 9, characterized in that, The step of controlling one of the plurality of receiving units to scan the capacitance of a region of the capacitive touchscreen at a target time, and controlling another receiving unit to transmit the scan data obtained before the target time, includes: Control the first receiving unit among the plurality of receiving units to scan the capacitance of the first area of ​​the capacitive screen; At the target time when the first receiving unit scans and obtains the scan data of the capacitance of the first region, the first receiving unit is controlled to send the scan data, and the second receiving unit among the plurality of receiving units is controlled to scan the capacitance of the second region of the capacitive screen.

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