Touch display device and driving method

Abstract

This invention provides a touch display device and a driving method. The touch display device includes a touch driving circuit and a channel switching module. The touch driving circuit includes multiple touch channels, which are divided into multiple first touch channels and multiple second touch channels. The multiple first touch channels correspond to multiple first electrode blocks in a first touch area, and the multiple second touch channels correspond to and are connected to multiple second electrode blocks in a second touch area. The channel switching module is used to connect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and disconnect the connections between the multiple first touch channels and the multiple second touch channels; or, it is used to disconnect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and connect the connection between the first touch channel receiving the touch detection signal and the corresponding second touch channel in the scanning direction. This invention can be used to achieve a high touch reporting rate in a local area, improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of touch display, and in particular to a touch display device and driving method. Background Technology

[0002] Touchscreen displays, such as mobile phones, tablets, and information kiosks in public lobbies, are widely used in daily life. This allows users to operate the interface simply by touching the screen with their fingers, eliminating reliance on other input devices (such as keyboards and mice) and making human-computer interaction much easier.

[0003] With the development of touch display devices and the widespread adoption of mobile networks, touch display devices often have specific areas that are used for extended periods, such as the control area in gaming applications. To improve user experience, there is an increasing demand for increasing the touch sampling rate in these specific areas. Manufacturers have subsequently launched touch display devices that market themselves with high refresh rates and high touch sampling rates. However, existing touch display devices adjust the sampling rate across the entire device. Increasing the overall sampling rate could potentially reduce display time and affect refresh rates, ultimately leading to a lower user experience.

[0004] Therefore, improving the user experience of touch display devices by increasing the reporting rate in local areas without taking up display time is a problem that the industry urgently needs to solve. Summary of the Invention

[0005] In view of the above problems, the purpose of the present invention is to provide a touch display device and a driving method.

[0006] This invention provides a touch display device, comprising a touch display panel, the touch display panel including multiple touch areas, the multiple touch areas being divided into first touch areas and second touch areas, the touch display device further including a touch driving circuit and a channel switching module; the touch driving circuit including multiple touch channels, the multiple touch channels being divided into multiple first touch channels and multiple second touch channels, the multiple first touch channels corresponding to multiple first electrode blocks of the first touch areas, and the multiple second touch channels corresponding to and connected to multiple second electrode blocks of the second touch areas; the channel switching module is used to connect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and disconnect the connections between the multiple first touch channels and the multiple second touch channels; or, it is used to disconnect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and connect the connection between the first touch channel receiving the touch detection signal and the second touch channel corresponding to the scanning direction, so as to control whether the second touch area replaces the first touch area to complete the corresponding touch reporting.

[0007] Specifically, the channel switching module includes multiple first switching elements, each of which includes a first control terminal, a first access terminal, and a second access terminal. The first control terminals of the multiple first switching elements are connected together, the first access terminals of the multiple first switching elements are correspondingly connected to the first touch channel, and the second access terminals of the multiple first switching elements are correspondingly connected to the multiple first electrode blocks.

[0008] Specifically, the channel switching module includes multiple second switching elements, each of which includes a second control terminal, a third path terminal, and a fourth path terminal. The first touch channel and the second touch channel in the scanning direction are connected to the third path terminals of the corresponding multiple second switching elements, and the fourth path terminals of the corresponding multiple second switching elements are connected together.

[0009] Specifically, the touch driving circuit also includes multiple interfaces, which are connected to the channel on / off module to provide corresponding multiple driving timing control signals.

[0010] This invention also provides a driving method for a touch display device, including a first driving mode and a second driving mode with different driving modes; in the first driving mode, the touch phase includes multiple sequentially repeated first touch phases; in the second driving mode, the touch phase includes at least one first touch phase and at least one second touch phase; in both the first and second touch phases, the touch driving circuit performs a scan; in the first touch phase, the channel switching module connects the corresponding connections between multiple first touch channels and multiple first electrode blocks, disconnects the connections between multiple first touch channels and multiple second touch channels, and completes touch reporting for the first touch area and the second touch area; in the second touch phase, the channel switching module disconnects the corresponding connections between multiple first touch channels and multiple first electrode blocks, connects the first touch channel receiving the touch detection signal and the second touch channel corresponding to the scanning direction, and completes touch reporting for the second touch area.

[0011] Specifically, if there is a touch operation on the second touch area within a first preset time period, and there is no touch operation on the first touch area, then the system enters the second driving mode.

[0012] Specifically, the touch driving circuit generates multiple driving timing control signals. The channel on / off module, according to the multiple driving timing control signals, connects the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and disconnects the connections between the multiple first touch channels and the multiple second touch channels; or, disconnects the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and connects the connection between the first touch channel receiving the touch detection signal and the second touch channel corresponding to the scanning direction.

[0013] Specifically, multiple touch areas are driven using an inter-frame touch driving mode, and the touch driving circuit generates a corresponding first driving timing control signal; or, multiple touch areas are driven using an intra-frame touch driving mode, and the touch driving circuit generates a corresponding second driving timing control signal.

[0014] Specifically, during the display phase, the channel switching module connects the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and disconnects the connections between the multiple first touch channels and the multiple second touch channels.

[0015] Specifically, in the second driving mode, the touch phase of a frame includes at least one first touch phase and at least one second touch phase.

[0016] Specifically, in the first touch phase, the channel switching module always keeps the corresponding connections between the multiple first touch channels and the multiple first electrode blocks open, and always disconnects the connections between the multiple first touch channels and the multiple second touch channels, thereby completing touch reporting for the first touch area and the second touch area; in the second touch phase, the channel switching module always disconnects the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and sequentially connects the connections between the multiple first touch channels and the corresponding second touch channels in the scanning direction according to the order in which the multiple first touch channels receive touch detection signals, thereby completing touch reporting for the second touch area.

[0017] The touch display device and driving method provided by the present invention include a plurality of first touch channels corresponding to a plurality of first electrode blocks of a first touch area, and a plurality of second touch channels corresponding to and connected to a plurality of second electrode blocks of a second touch area. A channel switching module can be used to connect the corresponding connections between the plurality of first touch channels and the plurality of first electrode blocks, and disconnect the connections between the plurality of first touch channels and the plurality of second touch channels; or, it can be used to disconnect the corresponding connections between the plurality of first touch channels and the plurality of first electrode blocks, and connect the first touch channel receiving the touch detection signal and the second touch channel corresponding to the scanning direction, thereby controlling whether the second touch area replaces the first touch area to complete the corresponding touch reporting. This can be used to enable the second touch area to have a higher touch reporting rate compared to the first touch area, achieving a high touch reporting rate in a local area without affecting display time, and can be used to improve the user experience in special applications such as games.

[0018] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the inter-frame touch drive mode.

[0020] Figure 2 This is a schematic diagram of the in-frame touch drive mode.

[0021] Figure 3 This is a schematic diagram of the structure of a touch display device according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the touch area partitioning of a touch display device according to an embodiment of the present invention.

[0023] Figure 5 This is a timing diagram of the operation of a touch display device according to an embodiment of the present invention.

[0024] Figure 6 This is another timing diagram of a touch display device according to an embodiment of the present invention. Detailed Implementation

[0025] To further illustrate the technical means and effects of the present invention in order to achieve the intended purpose, the following detailed description of the specific implementation methods, steps, structures, features and effects of the touch display device and driving method proposed according to the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0026] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the accompanying drawings. Through the description of the specific embodiments, a more in-depth and specific understanding can be gained of the technical means and effects adopted by the present invention to achieve its intended purpose. However, the accompanying drawings are for reference and illustration only and are not intended to limit the present invention.

[0027] Existing in-cell touch screens generally adopt touch and display driver integration (TDDI), and the touch working mode is divided into inter-frame touch driver mode and intra-frame touch driver mode.

[0028] Figure 1 This is a schematic diagram of the inter-frame touch driving mode. (Example) Figure 1 As shown, the inter-frame touch driving mode (Long V mode) refers to driving the touch sensor once after each image frame ends to detect touch signals. Specifically, this occurs in each cycle of the frame synchronization signal Vsync provided by the timing control circuit, including both the display and touch phases. At a refresh rate of 60Hz, this inter-frame touch driving mode can support a reporting rate of 120Hz. Figure 2 This is a schematic diagram of the in-frame touch driving mode. For example... Figure 2 As shown, the intra-frame touch driving mode (Long H mode) refers to dividing the display period of an image frame into multiple equal parts, and inserting the touch phase driven by the touch sensor into the interval between two adjacent parts. At a refresh rate of 60Hz, this intra-frame touch driving mode can support a reporting rate of 120Hz.

[0029] Figure 3 This is a schematic diagram of a touch display device according to an embodiment of the present invention. This embodiment provides a touch display device, which includes a touch display panel. The touch display panel includes multiple touch areas, which are divided into a first touch area and a second touch area. For example... Figure 3 As shown, for example, the touch display panel includes four touch areas MUX1 to MUX4, and these four touch areas can be divided into a first touch area and a second touch area. For example, the first touch area includes touch areas MUX1 to MUX3, and the second touch area includes touch area MUX4. The touch display device also includes a touch driving circuit 10 and a channel switching module 20.

[0030] The touch driving circuit 10 includes multiple touch channels, which are divided into multiple first touch channels and multiple second touch channels. The multiple first touch channels correspond to multiple first electrode blocks in a first touch area, and the multiple second touch channels correspond to and are connected to multiple second electrode blocks in a second touch area. For example... Figure 3 As shown, for example, the touch driving circuit 10 includes N touch channels, namely touch channel 1 to touch channel N. These N touch channels are divided into multiple first touch channels and multiple second touch channels. The multiple first touch channels include touch channel 1 to touch channel 3 / 4N, and the multiple second touch channels include touch channel 3 / 4N+1 to touch channel N. Touch channels 1 to touch channel 1 / 4N in the multiple first touch channels correspond to 1 / 4N first electrode blocks of touch area MUX 1 in the first touch area; touch channels 1 / 4N+1 to touch channel 2 / 4N in the multiple first touch channels correspond to 1 / 4N first electrode blocks of touch area MUX 2 in the first touch area; and touch channels 2 / 4N+1 to touch channel 3 / 4N in the multiple first touch channels correspond to 1 / 4N first electrode blocks of touch area MUX 3 in the first touch area. Furthermore, touch channels 3 / 4N+1 to touch channel N in the second touch channel correspond to and are connected to 1 / 4N of the second electrode blocks in the second touch area, i.e., touch area MUX 4.

[0031] The channel switching module 20 is used to connect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and disconnect the connection between the multiple first touch channels and the multiple second touch channels; or, it is used to disconnect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and connect the connection between the first touch channel receiving the touch detection signal and the second touch channel corresponding to the scanning direction, so as to control whether the second touch area replaces the first touch area to complete the corresponding touch reporting.

[0032] Specifically, during the touch phase, the touch driving circuit 10 scans multiple touch areas (touch areas MUX1 to touch areas MUX4) of the touch display panel through multiple touch channels (touch channels 1 to N). The scanning direction can be, for example, from left to right, but this embodiment does not impose any specific restrictions on the scanning direction. The touch driving circuit 10 provides touch detection signals to the touch channels and transmits them to the electrode blocks connected to the touch channels. When the touch driving circuit 10 provides touch detection signals to the second touch channels (touch channels 3 / 4N+1 to touch channels N), since the multiple second touch channels (touch channels 3 / 4N+1 to touch channels N) correspond to and are connected to the multiple second electrode blocks of the second touch area (touch area MUX4), the multiple second electrode blocks of the second touch area (touch area MUX4) can receive the corresponding touch detection signals, and the second touch area (touch area MUX4) can perform the corresponding touch detection, and the second touch area (touch area MUX4) completes the touch reporting. When the touch driving circuit 10 provides a touch detection signal to a first touch channel, the channel switching module 20 can be used to connect the first touch channel to the corresponding first electrode block, so that the first touch area (touch area MUX1 to touch area MUX3) performs the corresponding touch reporting; or it can be used to connect the first touch channel to the corresponding second touch channel, so that the first touch channel is connected to the corresponding second electrode block through the corresponding second touch channel, so that the second touch area (touch area MUX4) replaces the first touch area (touch area MUX1 to touch area MUX3) to complete the corresponding touch reporting, thereby reducing the touch reporting rate of the first touch area (touch area MUX1 to touch area MUX3) and correspondingly increasing the touch reporting rate of the second touch area (touch area MUX4), thus achieving a high touch reporting rate in a local area.

[0033] In one embodiment, during a single touch scan in the touch phase, taking a scanning direction from left to right as an example, the touch driving circuit 10 first sequentially provides touch detection signals to multiple first touch channels (touch channels 1 to touch channels 3 / 4N). The channel switching module 20 can be used to connect the corresponding connections between the multiple first touch channels (touch channels 1 to touch channels 3 / 4N) and the multiple first electrode blocks, and disconnect the connections between the multiple first touch channels (touch channels 1 to touch channels 3 / 4N) and the multiple second touch channels (touch channels 3 / 4N+1 to touch channels N). When connected, the first touch channel (touch channel 1 to touch channel 3 / 4N) is connected to multiple first electrode blocks of the first touch area (touch area MUX1 to touch area MUX3) through the channel switching module 20. When the multiple first electrode blocks of the first touch area (touch area MUX1 to touch area MUX3) receive the touch detection signal, the first touch area (touch area MUX1 to touch area MUX3) can perform corresponding touch detection and complete the touch reporting. The touch driving circuit 10 then sequentially provides touch detection signals to the second touch channels (touch channels 3 / 4N+1 to touch channel N). Since the multiple second touch channels (touch channels 3 / 4N+1 to touch channel N) correspond to and are connected to the multiple second electrode blocks of the second touch area (touch area MUX4), the multiple second electrode blocks of the second touch area (touch area MUX4) can receive the corresponding touch detection signals. Therefore, the second touch area (touch area MUX4) can perform corresponding touch detection and complete touch reporting. Thus, in one touch scan, all touch areas can be scanned once, and the touch reporting rates of the first touch area (touch areas MUX1 to MUX3) and the second touch area (touch area MUX4) are equal.

[0034] In one embodiment, during a single touch scan in the touch phase, taking a scanning direction from left to right as an example, the touch driving circuit 10 first sequentially provides touch detection signals to multiple first touch channels (touch channels 1 to touch channels 3 / 4N). The channel switching module 20 can be used to disconnect the corresponding connections between the multiple first touch channels (touch channels 1 to touch channels 3 / 4N) and the multiple first electrode blocks, and sequentially connect the connection between the first touch channel receiving the touch detection signal and the corresponding second touch channel in the scanning direction. Thus, the multiple first touch channels (touch channels 1 to touch channels 3 / 4N) cannot be switched on and off by the channel switching module. Module 20 is connected to multiple first electrode blocks of the first touch area (touch area MUX1 to touch area MUX3). Instead, it first connects to the corresponding second electrode blocks through the channel switching module 20 and then through the corresponding second touch channel in the scanning direction. The corresponding second electrode blocks of the second touch area (touch area MUX4) can receive touch detection signals, so the second touch area (touch area MUX4) can perform corresponding touch detection. The second touch area (touch area MUX4) replaces the first touch area (touch area MUX1 to touch area MUX3) to complete the touch reporting. When the touch driving circuit 10 sequentially provides touch detection signals to the second touch channels (touch channels 3 / 4N+1 to touch channel N), since the multiple second touch channels (touch channels 3 / 4N+1 to touch channel N) correspond to and are connected to the multiple second electrode blocks of the second touch area (touch area MUX4), the multiple second electrode blocks of the second touch area (touch area MUX4) can receive the corresponding touch detection signals. Therefore, the second touch area (touch area MUX4) can perform corresponding touch detection and complete touch reporting. Thus, in a single touch scan, the first touch area (touch areas MUX1 to MUX3) can be scanned without scanning the second touch area (touch area MUX4), resulting in a higher touch reporting rate for the second touch area (touch area MUX4) compared to the first touch area (touch areas MUX1 to MUX3).

[0035] Therefore, during the touch phase, the channel on / off module 20 can control whether the second touch area (touch area MUX4) replaces the first touch area (touch areas MUX1 to MUX3) to complete the corresponding touch reporting. When the channel on / off module 20 controls the second touch area (touch area MUX4) to replace the first touch area (touch areas MUX1 to MUX3) to complete the touch reporting, the touch reporting rate of the first touch area (touch areas MUX1 to MUX3) is reduced, and the touch reporting rate of the second touch area (touch area MUX4) is correspondingly increased, achieving a high touch reporting rate in a local area. Simultaneously, because this embodiment can achieve a high touch reporting rate in a local area only during the touch phase, it does not affect the display of image frames, achieving a high touch reporting rate in a local area without affecting display time, which can be used to improve the user experience.

[0036] In one embodiment of the invention, during the display phase, the channel switching module 20 is used to connect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and to disconnect the connections between the multiple first touch channels and the multiple second touch channels. Thus, during the display phase, all touch channels are connected to their corresponding electrode blocks, thereby the touch driving circuit 10 can provide a driving voltage for image display, such as a DC common voltage.

[0037] In one embodiment of the invention, the channel switching module 20 includes a plurality of first switching elements T1. Each of the plurality of first switching elements T1 includes a first control terminal, a first access terminal, and a second access terminal. The first control terminals of the plurality of first switching elements T1 are connected together. The first access terminals of the plurality of first switching elements T1 are correspondingly connected to a first touch channel, and the second access terminals of the plurality of first switching elements T1 are correspondingly connected to a plurality of first electrode blocks. For example... Figure 3 As shown, for example, the channel switching module 20 includes 3 / 4N first switching elements T1, which are respectively disposed between 3 / 4N first touch channels (touch channel 1 to touch channel 3 / 4N) and the corresponding 3 / 4N first electrode blocks. The 3 / 4N first switching elements T1 are used to connect or disconnect the corresponding connection between the 3 / 4N first touch channels (touch channel 1 to touch channel 3 / 4N) and the 3 / 4N first electrode blocks in the first touch area.

[0038] In one embodiment of the invention, the channel switching module 20 includes a plurality of second switching elements T2. Each of the plurality of second switching elements T2 includes a second control terminal, a third path terminal, and a fourth path terminal. The corresponding first touch channel and second touch channel in the scanning direction are connected to the third path terminal of the corresponding plurality of second switching elements T2, and the fourth path terminals of the corresponding plurality of second switching elements T2 are connected together. For example... Figure 3As shown, for example, touch channels 1 / 4N, 1 / 2N, and 3 / 4N in the first touch channel, and touch channel N in the second touch channel in the scanning direction, are connected to the third path terminals of the corresponding four second switching elements T2. The fourth path terminals of the corresponding four second switching elements T2 are connected together. Thus, the four second switching elements T2 can connect touch channels 1 / 4N, 1 / 2N, and 3 / 4N in the first touch channel, and touch channel N in the second touch channel in the scanning direction. This connection between the first touch channel and the second touch channel can be achieved by turning on the second switching element T2 connected to a first touch channel receiving a touch detection signal and by turning on the second switching element T2 connected to a corresponding second touch channel in the scanning direction. Similarly, connection structures between other touch channels and corresponding second switching elements T2 are configured in this manner. Therefore, the second switching element T2 can be used to connect the first touch channel receiving a touch detection signal and the corresponding second touch channel in the scanning direction.

[0039] In one embodiment of the invention, the touch driving circuit 10 further includes multiple interfaces connected to the channel on / off module 20, providing corresponding multiple driving timing control signals. For example... Figure 3 As shown, exemplarily, the touch driving circuit 10 includes multiple interfaces connected to the channel on / off module 20, providing corresponding multiple driving timing control signals. In one embodiment, such as... Figure 3 As shown, among the multiple interfaces, the first interface GL1 is connected to the first control terminal of multiple first switching elements T1 in the channel switching module 20; interfaces 1-N correspond to touch channels 1-N, wherein interfaces 1-3 / 4N and touch channels 1-3 / 4N (touch areas MUX1 to touch areas MUX3) can be connected through 3 / 4N first switching elements T1, and interfaces 3 / 4N+1-N are directly connected to touch channels 3 / 4N+1-N (touch area MUX4); the other interfaces are connected to the second control terminals of multiple second switching elements T2 in the channel switching module 20. For example, the second interface GL2 is connected to the second control terminals of multiple second switching elements T2 corresponding to the first column of touch areas in the scanning direction, i.e., touch area MUX1; the third interface GL3 is connected to the second control terminals of multiple second switching elements T2 corresponding to the second column of touch areas in the scanning direction, i.e., touch area MUX2; and the fourth interface GR1 is connected to the third column of touch areas in the scanning direction, i.e., touch area MUX2. The second control terminals of multiple second switching elements T2 corresponding to 3 are connected, and the fifth interface GR2 is connected to the second control terminals of multiple second switching elements T2 corresponding to the fourth column of the touch area in the scanning direction, i.e., the touch area MUX 4.

[0040] Figure 4This is a schematic diagram of the touch area partitioning of a touch display device according to an embodiment of the present invention. In one embodiment of the invention, as shown... Figure 4 As shown, the second touch area (touch area MUX4) can be customized according to the interface of an application such as a game application (e.g., Figure 4 Configure the operation area (as shown in a) accordingly. That is, the touch area (such as...) Figure 4 As shown in b), corresponding partitioning settings can be configured. The second touch area (touch area MUX4) can meet the higher touch reporting rate requirements of the operation area to promptly detect user control actions. The first touch area (touch areas MUX1 to MUX3) can correspond to the non-operation area with lower touch reporting rate requirements, mainly used for displaying game scenes, etc. For example, the touch reporting rate of the first touch area (touch areas MUX1 to MUX3) can be 60Hz, and the touch reporting rate of the second touch area (touch area MUX4) can be 300Hz to achieve a high touch reporting rate in local areas.

[0041] Based on the same inventive concept, this embodiment of the invention also provides a driving method for a touch display device, which can be used to control the touch display device of the above embodiments. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above embodiments.

[0042] The driving method of the touch display device in this embodiment includes: a first driving mode and a second driving mode with different driving modes; in the first driving mode, the touch phase includes multiple sequentially repeated first touch phases; in the second driving mode, the touch phase includes at least one first touch phase and at least one second touch phase. In both the first and second touch phases, the touch driving circuit 10 performs one scan. In the first touch phase, the channel switching module 20 connects the corresponding connections between multiple first touch channels and multiple first electrode blocks, disconnects the connections between multiple first touch channels and multiple second touch channels, and completes touch reporting for the first and second touch areas. In the second touch phase, the channel switching module 20 disconnects the corresponding connections between multiple first touch channels and multiple first electrode blocks, connects the first touch channel receiving the touch detection signal and the corresponding second touch channel in the scanning direction, and completes touch reporting for the second touch area.

[0043] Specifically, only in Figure 3Taking a touch display device as an example, the driving method of the touch display device is explained. In the first driving mode, in the first touch stage, multiple first touch channels (touch channels 1 to 3 / 4N) are connected to corresponding first electrode blocks, while multiple second touch channels (touch channels 3 / 4N+1 to N) are connected to corresponding second electrode blocks. Therefore, the first touch area (touch area MUX1 to MUX3) and the second touch area (touch area MUX4) are scanned the same number of times. In the second driving mode, there are both a first touch stage and a second touch stage. In the second touch stage, the channel switching module 20 can control the second touch area (touch area MUX4) to replace the first touch areas (touch areas MUX1 to MUX3) to complete the corresponding touch reporting. The second driving mode reduces the touch reporting rate of the first touch area (touch areas MUX1 to MUX3) and correspondingly increases the touch reporting rate of the second touch area (touch area MUX4), achieving a high touch reporting rate in a local area. Furthermore, because this embodiment can achieve a high touch reporting rate in a local area only during the touch phase, it does not affect the display of image frames, thus achieving a high touch reporting rate in a local area without affecting display time, which can be used to improve the user experience.

[0044] In one embodiment of the invention, the driving method includes: entering a first driving mode when the touch display device receives a touch command, so that the touch reporting rate of each touch area is the same.

[0045] In one embodiment of the invention, the driving method includes: if a touch operation occurs in the second touch area and no touch operation occurs in the first touch area within a first preset time, then the system enters a second driving mode. For example, if a touch operation occurs in the second touch area (touch area MUX4) and no touch operation occurs in the first touch area (touch areas MUX1 to MUX3) within the first preset time, then the user has a corresponding need for a high touch reporting rate in a local area. In this case, the touch driver automatically enters the second driving mode, reducing the touch reporting rate of the first touch area (touch areas MUX1 to MUX3) and correspondingly increasing the touch reporting rate of the second touch area (touch area MUX4), thereby achieving a high touch reporting rate in a local area.

[0046] In one embodiment of the invention, the driving method includes: a touch driving circuit 10 generating multiple driving timing control signals; a channel on / off module 20, according to the multiple driving timing control signals, connecting the corresponding connections between multiple first touch channels and multiple first electrode blocks, and disconnecting the connections between the multiple first touch channels and multiple second touch channels; or, disconnecting the corresponding connections between the multiple first touch channels and multiple first electrode blocks, and connecting the first touch channel currently receiving a touch detection signal and the second touch channel corresponding to the scanning direction.

[0047] In one embodiment of the invention, the driving method includes: driving multiple touch areas using an inter-frame touch driving mode, wherein the touch driving circuit 10 generates a corresponding first driving timing control signal; or, driving multiple touch areas using an intra-frame touch driving mode, wherein the touch driving circuit 10 generates a corresponding second driving timing control signal.

[0048] In one embodiment of the invention, the driving method includes: in a second driving mode, a touch phase in a frame includes at least one first touch phase and at least one second touch phase.

[0049] In one embodiment of the invention, the driving method includes: in a first touch phase, the channel on / off module 20 always connects the corresponding connections between the plurality of first touch channels and the plurality of first electrode blocks, and always disconnects the connections between the plurality of first touch channels and the plurality of second touch channels, thereby completing touch reporting for the first touch area and the second touch area; in a second touch phase, the channel on / off module 20 always disconnects the corresponding connections between the plurality of first touch channels and the plurality of first electrode blocks, and sequentially connects the connections between the plurality of first touch channels and the corresponding second touch channels in the scanning direction according to the order in which the plurality of first touch channels receive touch detection signals, thereby completing touch reporting for the second touch area.

[0050] Figure 5 This is a timing diagram of a touch display device according to an embodiment of the present invention. Please also refer to... Figure 3 and Figure 5 The touch display device driver can adopt an inter-frame touch driving mode, that is, within one frame of each cycle of the frame synchronization signal Vsync, there can be a display stage and a touch stage. This embodiment does not restrict the order in which the two stages are set. The driving modes of the touch display device include a first driving mode and a second driving mode.

[0051] In the second drive mode, such as Figure 5 For example, the touch phase may include a first touch phase and a second touch phase, corresponding to the high level of TP_EN. The touch driving circuit 10 generates a plurality of corresponding first driving timing control signals, which can be sent to the channel on / off module 20 through the interface. The channel on / off module 20, according to the plurality of first driving timing control signals, connects the corresponding connections between the plurality of first touch channels (touch channels 1 to touch channels 3 / 4N) and the plurality of first electrode blocks, and disconnects the connection between the plurality of first touch channels (touch channels 1 to touch channels 3 / 4N) and the plurality of second touch channels (touch channels 3 / 4N+1 to touch channels N); or, disconnects the corresponding connections between the plurality of first touch channels (touch channels 1 to touch channels 3 / 4N) and the plurality of first electrode blocks, and connects the first touch channel receiving the touch detection signal and the corresponding second touch channel in the scanning direction.

[0052] During the display phase, the channel switching module 20 connects multiple first touch channels (touch channels 1 to 3 / 4N) to multiple first electrode blocks and disconnects the connections between multiple first touch channels (touch channels 1 to 3 / 4N) and multiple second touch channels (touch channels 3 / 4N+1 to N). For example, if the first switching element T1 in the channel switching module 20 receives the corresponding first drive timing control signal GPIOL_1 sent by the first interface GL1 and is always at a high level VGH, then the corresponding connections between multiple first touch channels (touch channels 1 to 3 / 4N) and multiple first electrode blocks can always be connected. Similarly, if the second switching element T2 in the channel switching module 20 receives the corresponding first drive timing control signals (GPIOL_2, GPIOL_3, GPIOR_1, and GPIOR_2) sent by the second interface GL2 to the fifth interface GR1, then the corresponding connections between multiple first touch channels (touch channels 1 to 3 / 4N) and multiple first electrode blocks can be connected. If all touch channels are always at a low level (VGL), the corresponding connections between multiple first touch channels (touch channel 1 to touch channel 3 / 4N) and multiple first electrode blocks can be always disconnected, so that multiple first touch channels (touch channel 1 to touch channel 3 / 4N) are connected to their corresponding first electrode blocks, while multiple second touch channels (touch channel 3 / 4N+1 to touch channel N) are connected to their corresponding second electrode blocks. In the display stage, all touch channels are connected to their corresponding electrode blocks, so the touch driving circuit 10 can provide a driving voltage for image display, such as a DC common voltage.

[0053] In the first touch phase, the first switching element T1 in the channel switching module 20 receives the corresponding first driving timing control signal GPIOL_1 sent by the first interface GL1, which is always at a high level VGH. This ensures that the corresponding connections between multiple first touch channels (touch channel 1 to touch channel 3 / 4N) and multiple first electrode blocks are always connected. The second switching element T2 in the channel switching module 20 receives the corresponding first driving timing control signals (GPIOL_2, GPIOL_3, GPIOR_1, and GPIOR_2) sent by the second interface GL2 to the fifth interface GR1. _2) If both are always at a low level (VGL), the corresponding connections between multiple first touch channels (touch channels 1 to 3 / 4N) and multiple first electrode blocks can be consistently disconnected. This ensures that multiple first touch channels (touch channels 1 to 3 / 4N) are connected to their corresponding first electrode blocks, while multiple second touch channels (touch channels 3 / 4N+1 to N) are connected to their corresponding second electrode blocks. Therefore, both the first touch area (touch area MUX1 to MUX3) and the second touch area (touch area MUX4) undergo the same number of scans and complete touch reporting. Thus, in the first touch phase, the first touch area (touch area MUX1 to MUX3) can be scanned once, and the second touch area (touch area MUX4) can be scanned once.

[0054] In the second touch phase, the first switching element T1 in the channel on / off module 20 receives the corresponding first driving timing control signal GPIOL_1 sent by the first interface GL1, which is always at a low level VGL. Therefore, the corresponding connection between the multiple first touch channels (touch channel 1 to touch channel 3 / 4N) and the multiple first electrode blocks is always disconnected. The second switching element T2 in the channel on / off module 20 receives the corresponding first driving timing control signals (GPIOL_2, GPIOL_3, GPIOR_1, and GPIOR_2) sent by the second interface GL2 to the fifth interface GR1. For example, the first driving timing control signal GPIOL_2 output by the second interface GL2 is only at a high level VGH when touch channel 1 to touch channel 1 / 4N in the first touch channel receives the touch detection signal, and is at a low level VGL at other times; the first driving timing control signal GPIOL_3 output by the third interface GL3 is only at a high level VGH when touch channel 1 to touch channel 1 / 4N in the first touch channel receives the touch detection signal, and is at a low level VGL at other times; the first driving timing control signal GPIOL_3 output by the third interface GL3 is only at a high level VGH when touch channel 1 to touch channel 1 / 4N in the first touch channel receives the touch detection signal. The first drive timing control signal GPIOR_1 output by the fourth interface GR1 is high only when touch channels 1 / 2N+1 to 3 / 4N receive touch detection signals, and low only when touch channels 1 / 2N+1 to 3 / 4N receive touch detection signals, and low only when touch channels 3 / 4N receive touch detection signals, and low only when touch channels 4 / 4N+1 to 3 / 4N receive touch detection signals, and low only when touch channels 3 / 4N+1 receive touch detection signals, and low only when touch channels 4 / 4N+1 receive touch detection signals, and low only when touch channels 3 ... The second switching element T2 in the channel switching module 20 sequentially connects the first touch channel receiving the touch detection signal and the corresponding second touch channel in the scanning direction. The first touch channel cannot be connected to the multiple first electrode blocks of the first touch area (touch area MUX1 to touch area MUX3) through the channel switching module 20. Instead, it first connects to the corresponding second electrode block through the channel switching module 20 and then through the corresponding second touch channel in the scanning direction. The corresponding second electrode block of the second touch area (touch area MUX4) can receive the touch detection signal, and the second touch area (touch area MUX4) can perform the corresponding touch detection. The second touch area (touch area MUX4) replaces the first touch area (touch area MUX1 to touch area MUX3) to complete the touch reporting, completing three scans.When the touch driving circuit 10 sequentially provides touch detection signals to the second touch channels (touch channels 3 / 4N+1 to touch channel N), since the multiple second touch channels (touch channels 3 / 4N+1 to touch channel N) correspond to and are connected to the multiple second electrode blocks of the second touch area (touch area MUX4), the multiple second electrode blocks of the second touch area (touch area MUX4) can receive the corresponding touch detection signals. Therefore, the second touch area (touch area MUX4) can perform corresponding touch detection and complete touch reporting. Thus, in the second touch stage, the second touch area (touch area MUX4) can be scanned four times.

[0055] Therefore, an inter-frame touch driving mode is adopted. In the second driving mode, the touch reporting rate of the first touch area (touch area MUX1 to touch area MUX3) can be 60Hz, and the touch reporting rate of the second touch area (touch area MUX4) can be 300Hz. The touch reporting rate of the second touch area (touch area MUX4) is higher than that of the first touch area (touch area MUX1 to touch area MUX3), achieving a high touch reporting rate in a local area. Furthermore, because this embodiment can achieve a high touch reporting rate in a local area only during the touch phase, it does not affect the display of image frames, achieving a high touch reporting rate in a local area without affecting display time, which can be used to improve the user experience.

[0056] It should be noted that this embodiment does not limit the first drive timing control signal to only Figure 5 The timing control signal shown can be any other timing control signal to achieve different combinations of touch reporting rates.

[0057] Figure 6 This is another timing diagram of a touch display device according to an embodiment of the present invention. Please also refer to... Figure 3 and Figure 6 The touch display device driver can adopt an intra-frame touch driving mode, meaning that within each frame of the frame synchronization signal Vsync, there can be a display stage and a touch stage. The display stage can be divided into multiple equal parts, and the touch stage is inserted into the interval between two adjacent equal parts. The driving modes of the touch display device include a first driving mode and a second driving mode. In the second driving mode, such as... Figure 6For example, the touch phase may include a first touch phase and a second touch phase, corresponding to a high level of TP_EN. The touch driving circuit 10 generates a plurality of corresponding second driving timing control signals, which can be sent to the channel on / off module 20 via an interface. The channel on / off module 20, according to the plurality of second driving timing control signals, connects the corresponding connections between the plurality of first touch channels and the plurality of first electrode blocks, and disconnects the connections between the plurality of first touch channels and the plurality of second touch channels; or, disconnects the corresponding connections between the plurality of first touch channels and the plurality of first electrode blocks, and connects the first touch channel receiving the touch detection signal and the corresponding second touch channel in the scanning direction.

[0058] During the display phase, the channel switching module 20 connects multiple first touch channels (touch channels 1 to 3 / 4N) to multiple first electrode blocks and disconnects the connections between multiple first touch channels (touch channels 1 to 3 / 4N) and multiple second touch channels. For example, if the first switching element T1 in the channel switching module 20 receives the corresponding first drive timing control signal GPIOL_1 sent by the first interface GL1 and is always at a high level VGH, then the corresponding connections between multiple first touch channels (touch channels 1 to 3 / 4N) and multiple first electrode blocks can always be connected. Similarly, the second switching element T2 in the channel switching module 20 receives the corresponding first drive timing control signals (GPIOL_1, GPIOL_2, GPIOR_1, and GPIOR_2) sent by the second interface GL2 to the fifth interface GR1. If all touch channels are always at a low level (VGL), the corresponding connections between multiple first touch channels (touch channel 1 to touch channel 3 / 4N) and multiple first electrode blocks can be always disconnected, so that multiple first touch channels (touch channel 1 to touch channel 3 / 4N) are connected to their corresponding first electrode blocks, while multiple second touch channels (touch channel 3 / 4N+1 to touch channel N) are connected to their corresponding second electrode blocks. In the display stage, all touch channels are connected to their corresponding electrode blocks, so the touch driving circuit 10 can provide a driving voltage for image display, such as a DC common voltage.

[0059] In the first touch phase, the first switching element T1 in the channel switching module 20 receives the corresponding first driving timing control signal GPIOL_1 sent by the first interface GL1, which is always at a high level VGH. This ensures that the corresponding connections between multiple first touch channels (touch channel 1 to touch channel 3 / 4N) and multiple first electrode blocks are always connected. The second switching element T2 in the channel switching module 20 receives the corresponding first driving timing control signals (GPIOL_1, GPIOL_2, GPIOR_1, and GPIOR) sent by the second interface GL2 to the fifth interface GR1. _2) If both are always at a low level (VGL), the corresponding connections between multiple first touch channels (touch channels 1 to 3 / 4N) and multiple first electrode blocks can be consistently disconnected. This ensures that multiple first touch channels (touch channels 1 to 3 / 4N) are connected to their corresponding first electrode blocks, while multiple second touch channels (touch channels 3 / 4N+1 to N) are connected to their corresponding second electrode blocks. Therefore, both the first touch area (touch area MUX1 to MUX3) and the second touch area (touch area MUX4) undergo the same number of scans and complete touch reporting. Thus, in the first touch phase, the first touch area (touch area MUX1 to MUX3) can be scanned once, and the second touch area (touch area MUX4) can be scanned once.

[0060] In the second touch phase, the first switching element T1 in the channel on / off module 20 receives the corresponding first driving timing control signal GPIOL_1 sent by the first interface GL1, which is always at a low level VGL. Therefore, the corresponding connection between the multiple first touch channels (touch channel 1 to touch channel 3 / 4N) and the multiple first electrode blocks is always disconnected. The second switching element T2 in the channel on / off module 20 receives the corresponding first driving timing control signals (GPIOL_1, GPIOL_2, GPIOR_1, and GPIOR_2) sent by the second interface GL2 to the fifth interface GR1. For example, the second driving timing control signal GPIOL_2 output by the second interface GL2 is only at a high level VGH when touch channel 1 to touch channel 1 / 4N in the first touch channel receives the touch detection signal, and is at a low level VGL at other times; the second driving timing control signal GPIOR_2 output by the third interface GL3 is only at a high level VGH when touch channel 1 to touch channel 1 / 4N in the first touch channel receives the touch detection signal, and is at a low level VGL at other times; the second driving timing control signal GPIOR_2 output by the third interface GL3 is only at a high level VGH when touch channel 1 to touch channel 1 / 4N in the first touch channel receives the touch detection signal. The second drive timing control signal GPIOR_1 output by the fourth interface GR1 is high only when touch detection signals are received from touch channels 1 / 2N+1 to 3 / 4N in the first touch channel, and low only at the other time. The second switching element T2 in the channel switching module 20 sequentially connects the first touch channel receiving the touch detection signal and the corresponding second touch channel (touch channel 3 / 4N+1 to touch channel N) in the scanning direction. The first touch channel cannot be connected to the multiple first electrode blocks of the first touch area (touch area MUX1 to touch area MUX3) through the channel switching module 20. Instead, it is first connected to the corresponding second electrode block through the channel switching module 20 and then through the corresponding second touch channel in the scanning direction. The corresponding second electrode block of the second touch area (touch area MUX4) can receive the touch detection signal. The second touch area (touch area MUX4) can perform the corresponding touch detection. The second touch area (touch area MUX4) replaces the first touch area (touch area MUX1 to touch area MUX3) to complete the touch reporting and complete 3 scans.When the touch driving circuit 10 sequentially provides touch detection signals to the second touch channels, since the multiple second touch channels (touch channels 3 / 4N+1 to touch channel N) correspond to and are connected to the multiple second electrode blocks of the second touch area (touch area MUX4), the multiple second electrode blocks of the second touch area (touch area MUX4) can receive the corresponding touch detection signals. Therefore, the second touch area (touch area MUX4) can perform corresponding touch detection and complete touch reporting. Thus, in the second touch stage, the second touch area (touch area MUX4) can be scanned four times.

[0061] Therefore, an inter-frame touch driving mode is adopted. In the second driving mode, the touch reporting rate of the first touch area (touch area MUX1 to touch area MUX3) can be 60Hz, and the touch reporting rate of the second touch area (touch area MUX4) can be 300Hz. The touch reporting rate of the second touch area (touch area MUX4) is higher than that of the first touch area (touch area MUX1 to touch area MUX3), achieving a high touch reporting rate in a local area. Furthermore, because this embodiment can achieve a high touch reporting rate in a local area only during the touch phase, it does not affect the display of image frames, achieving a high touch reporting rate in a local area without affecting display time, which can be used to improve the user experience.

[0062] It should be noted that this embodiment does not limit the second drive timing control signal to only Figure 6 The timing control signal shown can be any other timing control signal to achieve different combinations of touch reporting rates.

[0063] The touch display device and driving method provided by the present invention have multiple first touch channels corresponding to multiple first electrode blocks of a first touch area, and multiple second touch channels corresponding to and connected to multiple second electrode blocks of a second touch area. The channel switching module 20 can be used to connect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and disconnect the connections between the multiple first touch channels and the multiple second touch channels; or, it can be used to disconnect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and connect the connection between the first touch channel receiving the touch detection signal and the second touch channel corresponding to the scanning direction, so as to control whether the second touch area replaces the first touch area to complete the corresponding touch reporting. This can be used to make the second touch area have a higher touch reporting rate than the first touch area, realizing a high touch reporting rate in a local area without affecting the display time, and can be used to improve the user experience in special applications such as game applications.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the invention without departing from the scope of the invention shall still fall within the scope of the present invention.

Claims

1. A touch display device, the touch display device comprising a touch display panel, the touch display panel comprising a plurality of touch areas, characterized in that, The plurality of touch areas are divided into a first touch area and a second touch area, and the touch display device further includes: The touch driving circuit (10) includes multiple touch channels, which are divided into multiple first touch channels and multiple second touch channels. The multiple first touch channels correspond to multiple first electrode blocks of the first touch area, and the multiple second touch channels correspond to and are connected to multiple second electrode blocks of the second touch area. The channel switching module (20) is used to connect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and disconnect the connections between the multiple first touch channels and the multiple second touch channels, so that the first touch area and the second touch area can independently complete the touch reporting; or, it is used to disconnect the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and connect the connection between the first touch channel receiving the touch detection signal and the second touch channel corresponding to the scanning direction, so that the second touch area can replace the first touch area to complete the corresponding touch reporting.

2. The touch display device according to claim 1, characterized in that, The channel switching module (20) includes multiple first switching elements (T1), each of the multiple first switching elements (T1) includes a first control terminal, a first path terminal and a second path terminal. The first control terminals of the multiple first switching elements (T1) are connected together, the first path terminals of the multiple first switching elements (T1) are connected to the first touch channel, and the second path terminals of the multiple first switching elements (T1) are connected to the multiple first electrode blocks.

3. The touch display device according to claim 1, characterized in that, The channel switching module (20) includes multiple second switching elements (T2), each of which includes a second control terminal, a third path terminal and a fourth path terminal. The first touch channel and the second touch channel in the scanning direction are connected to the third path terminals of the corresponding multiple second switching elements (T2), and the fourth path terminals of the corresponding multiple second switching elements (T2) are connected together.

4. The touch display device according to claim 1, characterized in that, The touch driving circuit (10) also includes multiple interfaces, which are connected to the channel on / off module (20) to provide corresponding multiple driving timing control signals.

5. A driving method for a touch display device, used to control the touch display device as described in any one of claims 1 to 4, characterized in that, This includes a first drive mode and a second drive mode with different driving modes; In the first driving mode, the touch phase includes multiple sequentially repeated first touch phases; in the second driving mode, the touch phase includes at least one first touch phase and at least one second touch phase; in both the first touch phase and the second touch phase, the touch driving circuit (10) performs one scan; During the first touch phase, the channel switching module (20) connects the corresponding connections between multiple first touch channels and multiple first electrode blocks, disconnects the connections between multiple first touch channels and multiple second touch channels, and completes touch reporting for the first touch area and the second touch area; In the second touch phase, the channel switching module (20) disconnects the corresponding connection between the multiple first touch channels and the multiple first electrode blocks, and connects the connection between the first touch channel receiving the touch detection signal and the second touch channel corresponding to the scanning direction, so as to complete the touch reporting for the second touch area.

6. The driving method according to claim 5, characterized in that, If there is a touch operation on the second touch area within a first preset time period, and there is no touch operation on the first touch area, then the system enters the second driving mode.

7. The driving method according to claim 5, characterized in that, Multiple touch areas are driven using an inter-frame touch driving mode, and the touch driving circuit (10) generates corresponding first driving timing control signals; Alternatively, multiple touch areas can be driven using an intra-frame touch driving mode, and the touch driving circuit (10) generates corresponding second driving timing control signals.

8. The driving method according to claim 7, characterized in that, During the display phase, the channel switching module (20) connects the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and disconnects the connections between the multiple first touch channels and the multiple second touch channels.

9. The driving method according to claim 7, characterized in that, In the second driving mode, the touch phase of a frame includes at least one first touch phase and at least one second touch phase.

10. The driving method according to claim 9, characterized in that, During the first touch phase, the channel switching module (20) always connects the corresponding connections between the multiple first touch channels and the multiple first electrode blocks, and always disconnects the connections between the multiple first touch channels and the multiple second touch channels, so as to complete the touch reporting for the first touch area and the second touch area; During the second touch phase, the channel switching module (20) always disconnects the corresponding connection between the multiple first touch channels and the multiple first electrode blocks. According to the order in which the multiple first touch channels receive touch detection signals, the module sequentially connects the multiple first touch channels and the second touch channels corresponding to the scanning direction to complete the touch reporting for the second touch area.

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