Touch display panel and display device

Abstract

The application discloses a touch display panel and a display device. The touch display panel comprises a plurality of touch sensors, a plurality of touch signal lines, a plurality of first light sensors and a plurality of compensation circuit components. The plurality of first light sensors are arranged in a plurality of touch areas respectively. The plurality of compensation circuit components are connected with the plurality of touch signal lines and the plurality of first light sensors simultaneously. When the touch sensor in the same touch area generates a touch signal and the first light sensor is blocked, a compensation signal is sent to the corresponding touch signal line. When the touch sensor generates a touch signal, a compensation signal is superimposed on the basis of the touch signal, so that the voltage of the touch signal line fed back to the chip is larger, thereby judging that the touch area exists user touch, rather than false touch, thereby improving the touch accuracy of the touch display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a touch display panel and display device. Background Technology

[0002] In recent years, with the increasingly widespread application of consumer electronics, the number of products combining touch functionality with displays to form touch display panels has also increased, including mobile phones and tablets. Generally speaking, a touch display panel consists of a display panel and a touch panel, where the touch panel can be built into the display panel or attached externally. Currently, touch panels can be classified according to their sensing methods into resistive touch panels, capacitive touch panels, optical touch panels, acoustic wave touch panels, and electromagnetic touch panels. Due to their advantages such as fast response time, high reliability, and high durability, capacitive touch panels have been widely used in electronic products.

[0003] However, when the surface of a capacitive touch panel is disturbed, accidental touches are likely to occur, affecting the touch accuracy of the touch display panel and adversely affecting the use of the product. Summary of the Invention

[0004] The purpose of this application is to provide a touch display panel and a display device to improve the touch accuracy of the touch display panel.

[0005] This application discloses a touch display panel, which includes multiple touch sensors, multiple touch signal lines, multiple first light sensors, and multiple compensation circuit components. The multiple touch sensors are respectively distributed in multiple touch areas of the touch display panel; the multiple touch signal lines are correspondingly connected to the multiple touch sensors and are used to receive touch signals from the touch sensors; the multiple first light sensors are respectively disposed in the multiple touch areas; the multiple compensation circuit components are simultaneously connected to the multiple touch signal lines and the multiple first light sensors, and are used to send a compensation signal to the corresponding touch signal line when the touch sensor in the same touch area generates a touch signal and the first light sensor is blocked.

[0006] Optionally, the compensation circuit assembly includes a first signal source, a compensation signal source, a first touch signal compensation line, a second touch signal compensation line, a first switch, a second switch, a first control unit, and a second control unit. The first signal source provides a first signal, the compensation signal source provides a compensation signal, one end of the first touch signal compensation line is connected to the first signal source, and the input end of the first light sensor is connected to the other end of the first touch signal compensation line; one end of the second touch signal compensation line is connected to the compensation signal source; the input end of the first switch and the output end of the first light sensor are connected to a first intersection point, and the output end of the first switch is connected to the touch signal line; the input end of the second switch and the other end of the second touch signal compensation line are connected to a second intersection point, and the output end of the second switch is connected to the first intersection point; the first control unit is connected to the control end of the first switch, and the second control unit is connected to the control end of the second switch; when the first light sensor is blocked, the first light sensor is disconnected, the first control unit controls the first switch to be turned on, and the second control unit controls the second switch to be turned on; when the first light sensor is illuminated, the first light sensor is turned on, and the first control unit controls the first switch to be turned off.

[0007] Optionally, the first control unit is the first intersection point, and the second control unit is the second intersection point; both the first switch and the second switch are N-type MOSFETs, the first signal is a low-level signal, and the compensation signal is a high-level signal.

[0008] Optionally, the plurality of compensation circuit components share a first signal source and a compensation signal source.

[0009] Optionally, the second control unit includes a second signal source and at least one second optical sensor. The second signal source provides a second signal, the input terminal of the second optical sensor is connected to the second signal source, and the output terminal of the second optical sensor is connected to the control terminal of the second switch. The second signal is used to control the second switch to be turned on.

[0010] Optionally, the second control unit includes a plurality of second light sensors, which are distributed at least on both sides of the non-display area of ​​the touch display panel.

[0011] Optionally, the plurality of compensation circuit components share a single second control unit.

[0012] Optionally, the touch display panel further includes a scene detection unit, which is used to detect whether the touch display panel is in a water spray scene; the compensation signal source is connected to the scene detection unit, and when the scene detection unit detects that the touch display panel is in a water spray scene, the compensation signal source provides a compensation signal.

[0013] Optionally, the touch display panel includes multiple pixels and active switches that drive the pixels. The first light sensor, the first switch, and the second switch are all formed in the same process as the active switch. The first touch signal compensation line and the second touch signal compensation line are all formed in the same process as the touch signal line.

[0014] This application also discloses a display device, which includes a driving circuit and a touch display panel as described above. The driving circuit is connected to the touch display panel and is used to drive the touch display panel.

[0015] The beneficial effects of this application embodiment are as follows: When the touch sensor generates a touch signal, it may be due to a user's finger touching the screen of the touch display panel, or it may be due to dirt, water droplets, etc., appearing on the screen and interfering with the screen, resulting in accidental touches. Existing technologies have difficulty identifying these two situations. Therefore, this application embodiment adds a first light sensor and a compensation circuit component to the touch display panel. These first light sensors, distributed in the touch area, sense external light. When the first light sensor does not generate photocurrent or the photocurrent is small, it indicates that the touch area has been touched by a user's finger. In touch control, the shadow of the user's finger covers the first photosensitive sensor in the touch area, causing it to be blocked. This affects the amount of light entering the first photosensitive sensor, resulting in no photocurrent or a very small photocurrent. At this time, the compensation circuit component connected to the sensor sends a compensation signal to the corresponding touch signal line, so that the touch signal line has an additional compensation signal on top of the touch signal. This results in a larger voltage fed back to the chip by the touch signal line, thus determining that there is user touch in the touch area, rather than a mis-touch, thereby improving the touch accuracy of the touch display panel. Attached Figure Description

[0016] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0017] Figure 1This is a schematic diagram of a touch display panel provided in the first embodiment of this application;

[0018] Figure 2 This is a schematic diagram of a compensation circuit assembly provided in the first embodiment of this application;

[0019] Figure 3 This is a schematic diagram of another compensation circuit component provided in the first embodiment of this application;

[0020] Figure 4 This is a schematic diagram of another compensation circuit assembly provided in the first embodiment of this application;

[0021] Figure 5 This is a schematic diagram of a touch display panel provided in the second embodiment of this application;

[0022] Figure 6 This is a schematic diagram of a second control unit provided in the second embodiment of this application;

[0023] Figure 7 This is a schematic diagram of a touch display panel provided in the third embodiment of this application;

[0024] Figure 8 This is a schematic diagram of a display device provided in the fourth embodiment of this application.

[0025] Among them, 10 is a display device; 20 is a driving circuit; 30 is a touch display panel; A is a touch area; B is a touch sensor; C is a touch signal line; 100 is a first light sensor; 200 is a compensation circuit assembly; 210 is a first signal source; 220 is a compensation signal source; 230 is a first touch signal compensation line; 240 is a second touch signal compensation line; 250 is a first switch; 260 is a second switch; M is a first intersection point; N is a second intersection point; 270 is a first control unit; 280 is a second control unit; 281 is a second signal source; 282 is a second light sensor; and 300 is a scene detection unit. Detailed Implementation

[0026] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0027] Furthermore, unless otherwise explicitly specified and limited, "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] When the surface of a touch display panel is disturbed, such as in rainy or showering environments, water droplets forming capacitance on the screen can affect touch sensitivity. There are two main effects: First, a conductive layer can form: because water is conductive, it forms a conductive layer on the screen surface, diverting the current path that would normally be completed through the finger, causing touch signal distortion. Second, multiple mis-touches can occur: scattered water droplets can be identified as multiple touch points, confusing them with the actual touch signal. Of course, touch display panels can also be affected by surface dirt, external electric field interference, or inherent panel malfunctions, all of which can lead to inaccurate touch response.

[0029] To address the aforementioned issues, this application provides the following specific embodiments to improve the touch accuracy of touch display panels. The application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0030] like Figure 1 and Figure 2 As shown, the touch display panel 30 provided in the first embodiment of this application is specifically a capacitive touch display panel. The touch display panel 30 includes multiple touch sensors B and multiple touch signal lines C. The multiple touch sensors B are respectively distributed in multiple touch areas A of the touch display panel 30. Each touch area A may have only one touch sensor B, or more than one touch sensor B may be provided as needed. The multiple touch signal lines C are arranged in parallel with each other and may be parallel to the data lines or the scan lines in the touch display panel 30. Moreover, each touch signal line C is connected to a corresponding touch sensor B to receive the touch signal from that touch sensor B. It should be noted that the touch signal is the electrical signal output by the touch sensor B when it is pressed under normal conditions, or the abnormal electrical signal output by the touch sensor B when the surface of the touch display panel 30 is disturbed.

[0031] The touch display panel 30 further includes multiple first light sensors 100 and multiple compensation circuit components 200. The multiple first light sensors 100 are respectively disposed in the multiple touch areas A. Each touch area A can have one first light sensor 100 or more first light sensors 100. The multiple compensation circuit components 200 are simultaneously connected to the multiple touch signal lines C and the multiple first light sensors 100, and are used to send a compensation signal to the corresponding touch signal line C when the touch sensor B in the same touch area A generates a touch signal and the first light sensor 100 is blocked.

[0032] When touch sensor B generates a touch signal, it could be due to a user's finger touching the screen of the touch display panel 30, or it could be due to dirt, water droplets, or other substances interfering with the screen and causing a false touch. Existing technology struggles to identify these situations. Therefore, this embodiment adds a first light sensor 100 and a compensation circuit assembly 200 to the touch display panel 30. These first light sensors 100, distributed within the touch area A, sense external light. When the first light sensor 100 does not generate photocurrent or generates a small photocurrent, it indicates that the touch area A has been touched by a user's finger. The shadow of the user's finger covers the first light sensor 100 in the touch area A, causing the first light sensor 100 to be blocked. This affects the amount of light entering the first light sensor 100, resulting in no photocurrent or a small photocurrent generated by the first light sensor 100. At this time, the compensation circuit component 200 connected to the sensor sends a compensation signal to the corresponding touch signal line C, so that the touch signal line C has an additional compensation signal on top of the touch signal. This makes the voltage fed back to the chip by the touch signal line C larger, thereby determining that there is a user touch in the touch area A, rather than a mis-touch, thereby improving the touch accuracy of the touch display panel 30.

[0033] In addition, when water droplets are present in both touch areas A at the same time, the water droplets can divert some of the charge, and the induced voltage generated when the finger touches the area is reduced under the current design, making it impossible to accurately identify the touch. However, with the touch display panel design in this application embodiment, the touch will generate a compensation signal to block the light of the first light sensor 100, thereby enhancing the touch recognition function and improving the problem of accidental touches by water droplets.

[0034] It should be noted that, Figure 1 The diagram only shows part of the touch sensor B, part of the touch signal line C, part of the first light sensor 100, and part of the compensation circuit assembly 200.

[0035] In some embodiments, such as Figure 2As shown, the compensation circuit assembly 200 includes a first signal source 210, a compensation signal source 220, a first touch signal compensation line 230, a second touch signal compensation line 240, a first switch 250, a second switch 260, a first control unit 270, and a second control unit 280.

[0036] The first signal source 210 provides a first signal, the compensation signal source 220 provides a compensation signal, one end of the first touch signal compensation line 230 is connected to the first signal source 210, and the input end of the first light sensor 100 is connected to the other end of the first touch signal compensation line 230. One end of the second touch signal compensation line 240 is connected to the compensation signal source 220; the input end of the first switch 250 and the output end of the first light sensor 100 are connected to a first intersection point M, and the output end of the first switch 250 is connected to the touch signal line C.

[0037] The input terminal of the second switch 260 is connected to the other end of the second touch signal compensation line 240 at the second intersection point N, and the output terminal of the second switch 260 is connected to the first intersection point M; the first control unit 270 is connected to the control terminal of the first switch 250, and the second control unit 280 is connected to the control terminal of the second switch 260.

[0038] When the first light sensor 100 is blocked, it does not generate photocurrent, or the photocurrent is so small that it cannot connect the source and drain of the first light sensor 100. Therefore, the first light sensor 100 is in an off state. The first control unit 270 controls the first switch 250 to turn on, and the second control unit 280 controls the second switch 260 to turn on. At this time, the first signal provided by the first signal source 210 cannot be transmitted to the first intersection point M, while the compensation signal provided by the compensation signal source 220 can be transmitted to the touch signal line C through the first switch 250 and the second switch 260. It is superimposed with the touch signal on the touch signal line C to form a larger current, thereby determining that there is a press touch in the touch area A and responding.

[0039] When the first light sensor 100 is illuminated, it generates a large photocurrent and becomes conductive. The first control unit 270 then controls the first switch 250 to become disconnected. Although the first signal provided by the first signal source 210 can reach the first intersection point M, because the first switch 250 is disconnected, no signal can be transmitted to the touch signal line C. At this time, the touch signal line C either transmits a touch signal or no signal at all. As for the second control unit 280, it can either control the second switch 260 to become disconnected or connected. Since the compensation signal cannot pass through the first switch 250, neither situation will affect the touch signal on the touch signal line C.

[0040] Through the above design of the compensation circuit component 200, since each compensation circuit component 200 can compensate for the touch signal output by a touch sensor B, it can identify the mis-touch situation of each touch area A, thereby further improving the accuracy of identifying the mis-touch situation on the screen surface of the touch display panel 30.

[0041] In some embodiments, the first signal source 210 provides the first signal and the compensation signal source 220 provides the compensation signal only when a touch signal is detected from the touch sensor B. This avoids the first signal source 210 and the compensation signal source 220 being in a continuous signal output state, which would lead to power consumption. In other embodiments, regardless of whether the touch sensor B emits a touch signal, as long as the touch display panel 30 is powered on, the first signal source 210 continuously outputs the first signal and the compensation signal source 220 continuously outputs the compensation signal. This design ensures the touch response speed of the touch display panel 30.

[0042] In some embodiments, the area of ​​the touch area A is smaller than the area of ​​the user's finger in contact with the screen of the touch display panel 30. Moreover, the touch sensor B and the first light sensor 100 are both located in the central area of ​​the touch area A to avoid the touch sensor B and the first light sensor 100 being too far apart, which would result in the touch sensor B being touched while the first light sensor 100 is not blocked.

[0043] In some embodiments, the first switch 250 and the second switch 260 may be disposed within the touch area A to reduce signal transmission distance and impedance caused by signal lines. Of course, in other embodiments, the first switch 250 and the second switch 260 may also be disposed in the non-display area of ​​the touch display panel 30.

[0044] like Figure 3As shown in the embodiment of this application, the first switch 250 and the second switch 260 are both transistors, the first control unit 270 is the first intersection point M, and the second control unit 280 is the second intersection point N; the first switch 250 and the second switch 260 are both N-type MOSFETs, the first signal is a low-level signal, and the compensation signal is a high-level signal.

[0045] Through the above design of the first control unit 270 and the second control unit 280, the control terminal and input terminal of the first switch 250 receive the same signal, and the control terminal and input terminal of the second switch 260 also receive the same signal.

[0046] When the first light sensor 100 is blocked, it is disconnected, and the low-level signal of the first signal cannot be transmitted to the first intersection point M. At this time, both the input and control terminals of the second switch 260 receive the high-level compensation signal. Since the second switch 260 is an N-type MOSFET, it is turned on, and the compensation signal is transmitted to the first intersection point M through the second switch 260. Then, both the input and control terminals of the second switch 260 also receive the high-level compensation signal. Because the first switch 250 is also an N-type MOSFET, it is turned on, allowing the compensation signal to be transmitted to the touch signal line C through the first switch 250.

[0047] When the first light sensor 100 is illuminated, it turns on, and the low-level first signal is transmitted to the first intersection point M. At this time, both the input and control terminals of the second switch 260 receive the high-level compensation signal. Influenced by the low-level first signal, the high-level compensation signal is pulled low to form a low-level signal (this can also be understood as the voltage difference between the first signal and the compensation signal being consumed by the second switch 260, resulting in the second switch 260 inputting a high-level signal and outputting a low-level signal). The pulled-down compensation signal, or the combined signal of the first signal and the compensation signal, is a low-level signal. This low-level signal cannot turn on the first switch 250, so the first switch 250 is in the off state, and the signal cannot be transmitted to the touch signal line C through the first switch 250.

[0048] The above design greatly simplifies the structure of the compensation circuit assembly 200 and reduces product costs. In some other embodiments, a chip control design may be adopted, in which the first control unit 270 and the second control unit 280 are designed as chip control structures, and corresponding control signals are sent to the first switch 250 and the second switch 260 as needed to control the state of the first switch 250 and the second switch 260.

[0049] In some embodiments, the first switch 250 and the second switch 260 may both be P-type MOSFETs, or one may be an N-type MOSFET and the other may be a P-type MOSFET.

[0050] As a specific example, both the first switch 250 and the second switch 260 are P-type MOSFETs, the first signal is a high-level signal, and the compensation signal is a low-level signal. When the first light sensor 100 is blocked, it is turned off, and the high-level first signal cannot be transmitted to the first intersection point M. At this time, both the input and control terminals of the second switch 260 receive the low-level compensation signal. Since the second switch 260 is a P-type MOSFET, it is turned on, and the compensation signal is transmitted to the first intersection point M through the second switch 260. Then, both the input and control terminals of the second switch 260 also receive the low-level compensation signal. Because the first switch 250 is also a P-type MOSFET, it is turned on, allowing the compensation signal to be transmitted to the touch signal line C through the first switch 250. When the first light sensor 100 is illuminated, it is turned on, and the first signal is transmitted to the first intersection point M through the first light sensor 100. At the same time, both the input and control terminals of the second switch 260 receive compensation signals. At this time, affected by the high-level signal of the first signal, the low-level compensation signal is pulled high to form a high-level signal, and the signal cannot pass through the first switch 250.

[0051] like Figure 4 As shown, the plurality of compensation circuit components 200 share a first signal source 210 and a compensation signal source 220. It should be noted that... Figure 4 The example of three compensation circuit components 200 does not imply that the embodiments of this application only adopt the scheme of three compensation circuit components 200 sharing one first signal source 210 and one compensation signal source 220.

[0052] This embodiment of the application includes multiple compensation circuit components 200. Each compensation circuit component 200 has a separate first touch signal compensation line 230, a second touch signal compensation line 240, a first switch 250, and a second switch 260 to provide compensation signals to its respective touch area A. By sharing a first signal source 210 and a compensation signal source 220 with these compensation circuit components 200, the first signal source 210 simultaneously inputs a first signal to all the first touch signal compensation lines 230, and the compensation signal source 220 simultaneously inputs a compensation signal to all the second touch signal compensation lines 240. This design effectively reduces the number of first signal sources 210 and compensation signal sources 220, further reducing the design complexity.

[0053] In other embodiments, some compensation circuit components 200 may share a first signal source 210 and a compensation signal source 220, while other compensation circuit components 200 may each use a first signal source 210 and a compensation signal source 220.

[0054] In some embodiments, the first light sensor 100, the first switch 250, and the second switch 260 all employ a thin-film transistor structure. The touch display panel 30 includes multiple pixels and active switches that drive the pixels. The first light sensor 100, the first switch 250, and the second switch 260 are all formed in the same process as the active switches. The first touch signal compensation line 230 and the second touch signal compensation line 240 are all formed in the same process as the touch signal line C. This design significantly reduces the number of process steps in the touch display panel 30 and improves its manufacturing efficiency.

[0055] like Figure 5 and Figure 6 As shown, the touch display panel 30 provided in the second embodiment of this application differs from the first embodiment in that the second control unit 280 in this embodiment includes a second signal source 281 and at least one second light sensor 282. The second signal source 281 provides a second signal, the input terminal of the second light sensor 282 is connected to the second signal source 281, and the output terminal of the second light sensor 282 is connected to the control terminal of the second switch 260; wherein, the second signal is used to control the second switch 260 to be turned on.

[0056] Compared to the first embodiment where the control terminal of the second switch 260 is connected to the second intersection point N and the second switch 260 is controlled by a compensation signal, this embodiment controls the second switch 260 using a second signal source 281 and a second light sensor 282. Specifically, since the second signal is used to control the second switch 260 to turn on, and the input terminal of the second light sensor 282 is connected to the second signal source 281, when the second light sensor 282 is activated by external light, the second signal is output to the control terminal of the second switch 260 through the second light sensor 282, turning on the second switch 260. At this time, the compensation signal can pass through the second switch 260.

[0057] In this embodiment, the second light sensor 282 is located in the non-display area of ​​the touch display panel 30. The second light sensor 282 is not used to sense whether a user's finger is touching the touch area A, but rather to sense ambient light. When the touch display panel 30 is in a dark environment, the second light sensor 282 is deactivated. At this time, the compensation signal cannot pass through the second switch 260, thus failing to compensate for the touch signal. This embodiment, through the design of the second control unit 280, avoids the situation where the compensation circuit component 200 is mistakenly activated and performs incorrect compensation when the touch display panel 30 is in a completely dark environment.

[0058] In some embodiments, the second control unit 280 includes a plurality of second light sensors 282, which are distributed at least on both sides of the non-display area of ​​the touch display panel 30. By distributing the plurality of second light sensors 282 at least on both sides of the non-display area, or even on three or four sides of the non-display area, the problem of individual second light sensors 282 being accidentally blocked, causing the second switch 260 to misidentify, is avoided. With the above design, as long as one second light sensor 282 is not blocked and senses a relatively bright ambient light, it will be turned on, so that the second signal reaches the control terminal of the second switch 260, turning on the second switch 260.

[0059] In some embodiments, the first switch 250 and the second switch 260 are both N-type MOS transistors, the first signal is a low-level signal, and the compensation signal and the second signal are both high-level signals.

[0060] In some embodiments, the plurality of compensation circuit components 200 share a second control unit 280, avoiding the need for each compensation circuit component 200 to be designed with multiple second light sensors 282 and second signal sources 281 separately, which would increase the bezel size of the touch display panel 30 and affect the narrow bezel effect of the touch display panel 30.

[0061] In some embodiments, the first light sensor 100, the first switch 250, the second switch 260, and the second light sensor 282 all employ thin-film transistor structures. The touch display panel 30 includes a plurality of pixels and active switches that drive the pixels. The first light sensor 100, the first switch 250, the second switch 260, and the second light sensor 282 are all formed in the same process as the active switches. The first touch signal compensation line 230 and the second touch signal compensation line 240 are all formed in the same process as the touch signal line C. This design greatly improves the manufacturing efficiency of the touch display panel 30 in this embodiment.

[0062] like Figure 7As shown, as a third embodiment of the present application, the touch display panel 30 is further improved based on the first or second embodiment. Specifically, the touch display panel 30 further includes a scene detection unit 300, which is used to detect whether the touch display panel 30 is in a water spray scene; the compensation signal source 220 is connected to the scene detection unit 300, and when the scene detection unit 300 detects that the touch display panel 30 is in a water spray scene, the compensation signal source 220 provides a compensation signal.

[0063] It should be noted that the water spray scenario can refer to a rainy environment or a shower environment. The scenario detection unit 300 can be the front-facing camera of the touch display panel 30, or it can be based on user feedback commands or sensing of the capacitance on the screen to identify whether the touch display panel 30 is in a water spray scenario.

[0064] In this embodiment, the touch display panel 30 will only activate the compensation signal source 220 when it is in a water-spraying scenario, so as to compensate the touch signal. This embodiment optimizes the problem of accidental touch after the screen of the touch display panel 30 gets wet, and improves the touch accuracy in a watery environment.

[0065] like Figure 8 As shown, the fourth embodiment of this application provides a display device 10, which includes a driving circuit 20 and a touch display panel 30 as described above. The driving circuit 20 and the touch display panel 30 are connected and are used to drive the touch display panel 30.

[0066] Specifically, the driving circuit 20 is connected to all the touch signal lines C and receives the touch signals; and the compensation signal source 220 is also integrated into the driving circuit 20. The driving circuit 20 determines whether a user touches the touch display panel 30 based on the signal transmitted by the touch signal lines C.

[0067] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A touch display panel, comprising a plurality of touch sensors and a plurality of touch signal lines, the plurality of touch sensors are respectively distributed in a plurality of touch areas of the touch display panel, the plurality of touch signal lines are connected with the plurality of touch sensors correspondingly, and are configured to receive touch signals of the touch sensors; characterized in that, The touch display panel further comprises: a plurality of first light sensors respectively arranged in the plurality of touch areas; and a plurality of compensation circuit assemblies connected with the plurality of touch signal lines and the plurality of first light sensors, and configured to send a compensation signal to the corresponding touch signal line when the touch sensor in the same touch area generates a touch signal and the first light sensor is blocked. The compensation circuit assembly comprises: a first signal source configured to provide a first signal; a compensation signal source configured to provide a compensation signal; a first touch signal compensation line, one end of the first touch signal compensation line being connected with the first signal source, and an input end of the first light sensor being connected with the other end of the first touch signal compensation line; a second touch signal compensation line, one end of the second touch signal compensation line being connected with the compensation signal source; a first switch, an input end of the first switch being connected with an output end of the first light sensor to a first intersection, and an output end of the first switch being connected with the touch signal line; a second switch, an input end of the second switch being connected with the other end of the second touch signal compensation line to a second intersection, and an output end of the second switch being connected with the first intersection; a first control unit connected with a control end of the first switch; and a second control unit connected with a control end of the second switch. When the first light sensor is blocked, the first light sensor is turned off, the first control unit controls the first switch to be turned on, and the second control unit controls the second switch to be turned on; when the first light sensor is irradiated, the first light sensor is turned on, and the first control unit controls the first switch to be turned off. 2.The touch display panel of claim 1, wherein, The first control unit is the first intersection, and the second control unit is the second intersection. The first switch and the second switch are both N-type MOS tubes, the first signal is a low-level signal, and the compensation signal is a high-level signal. 3.The touch display panel of claim 1, wherein, The plurality of compensation circuit assemblies share one first signal source and one compensation signal source. 4.The touch display panel of claim 1, wherein, The second control unit comprises a second signal source and at least one second light sensor, the second signal source is configured to provide a second signal, an input end of the second light sensor is connected with the second signal source, and an output end of the second light sensor is connected with the control end of the second switch. The second signal is used to control the second switch to be turned on. 5.The touch display panel of claim 4, wherein, The second control unit comprises a plurality of second light sensors, and the plurality of second light sensors are distributed on at least two sides of a non-display area of the touch display panel. 6.The touch display panel of claim 4, wherein, The plurality of compensation circuit assemblies share one second control unit. 7.The touch display panel of claim 1, wherein, The touch display panel further comprises a scene detection unit configured to detect whether the touch display panel is in a water spraying scene; the compensation signal source is connected with the scene detection unit, and the compensation signal source provides a compensation signal when the scene detection unit detects that the touch display panel is in a water spraying scene. 8.The touch display panel of claim 7, wherein, The touch display panel comprises a plurality of pixels and a main switch for driving the pixels, the first light sensor, the first switch and the second switch are formed in the same process as the main switch, and the first touch signal compensation line and the second touch signal compensation line are formed in the same process as the touch signal line.

9. A display device, characterized by comprising: The touch display panel comprises a driving circuit and a touch display panel as claimed in any one of claims 1-8, the driving circuit and the touch display panel are connected, and the driving circuit is used for driving the touch display panel.

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