Display panel, brightness control method thereof and display device

Abstract

The invention discloses a display panel, a brightness control method thereof and a display device. The display panel comprises a mode recognition module, a judgment module and a dimming module. The judgment module is connected with the mode recognition module, the light sensors in all the light sensing areas on the first side of the display panel and the light sensors in all the light sensing areas on the second side of the display panel. If part of the light sensors in the light sensing areas on the first side and the second side of the display panel are shielded at the same time, it is judged that the display panel is in a mistaken touch state, and a mistaken touch signal is sent out; when the false touch signal is received, the dimming module keeps the brightness of the display panel unchanged; wherein the first side of the display panel and the second side of the display panel are respectively the left side and the right side in a horizontal screen mode. Through the design, wrong dimming caused by wrong touch in the use process of the display product can be avoided, and the influence on the use experience of a user is avoided.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a brightness control method thereof, and a display device. Background Art

[0002] With the development of display technology, liquid crystal display (LCD) panels are becoming more and more popular due to their advantages such as lightness and low radiation. The liquid crystal display panel includes an array substrate and a color film substrate arranged relatively to each other, and a liquid crystal layer arranged between the two. The brightness is adjusted by controlling the deflection of the liquid crystal. At present, a light sensor is usually set in the liquid crystal display panel to sense the brightness of the external ambient light, and then the display brightness of the liquid crystal display panel is adjusted according to the brightness of the external ambient light to adapt to user needs.

[0003] Currently, in display products with automatic dimming technology, the ambient light sensors are usually set at the upper and lower edges of the display screen. When users use display products, the ambient light sensors are easily blocked. For example, in the application scenario of playing games in landscape mode, the user's fingers block the upper and lower edges of the screen, so that the ambient light sensor receives the wrong amount of ambient light changes, and then dims incorrectly, causing the screen to darken and affecting usage; or when only the ambient light sensor position is blocked, the screen will dim incorrectly. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a display panel and a brightness control method and a display device, so as to avoid incorrect dimming caused by accidental touch during the use of the display product, thereby affecting the user experience.

[0005] The embodiment of the present application discloses a display panel, wherein a display area of ​​the display panel is divided into a plurality of photosensitive areas distributed in an array, each side of the display panel has a plurality of the photosensitive areas, and at least one light sensor is arranged in each of the photosensitive areas, the display panel comprises a pattern recognition module, a determination module and a dimming module, the pattern recognition module is used to identify the display mode of the display panel; the determination module is connected to the pattern recognition module, the light sensors in all the photosensitive areas on the first side of the display panel, and the light sensors in all the photosensitive areas on the second side of the display panel, and when the display panel enters the horizontal screen mode, if part of the light sensors in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked at the same time, it is determined that the display panel is in a false touch state, and a false touch signal is sent; the dimming module is used to adjust the brightness of the display panel, the dimming module is connected to the determination module, and when the false touch signal is received, the dimming module keeps the brightness of the display panel unchanged; wherein the first side of the display panel and the second side of the display panel are the left and right sides of the display panel when the display panel is in the horizontal screen mode, respectively.

[0006] Optionally, the display panel includes a plurality of signal lines arranged in parallel, each of the signal lines passes through a plurality of the photosensitive areas and connects a plurality of light sensors in series, one end of the signal line is connected to a preset voltage, and the preset voltage passes through all the light sensors on the corresponding signal line and is output to the judgment module; when the display panel enters the horizontal screen mode, if the preset voltage output by some of the signal lines received by the dimming module changes, it is determined that the display panel is in a false touch state.

[0007] Optionally, the display panel includes a plurality of criss-crossed data lines and a plurality of scan lines, the plurality of data lines and the plurality of scan lines divide the display panel into a plurality of pixels distributed in an array, and the display panel also includes an active switch for driving the pixels; the light sensor is a thin film transistor, and the light sensor and the active switch are formed by the same process; the signal line is arranged in parallel with the data line, the source and drain of adjacent light sensors on the same signal line are connected, the gates of the light sensors and the active switches in the same row are connected to the same scan line, and the light sensors and the active switches are of different types.

[0008] Optionally, the scanning line connected to the light sensor outputs a scanning signal in the scanning phase of each frame and outputs a sensing signal in an adjacent frame, the scanning signal is used to turn on the corresponding active switch, and the sensing signal is used to turn on the corresponding light sensor, and the scanning line not connected to the light sensor only outputs the scanning signal.

[0009] Optionally, each of the signal lines is divided into a sensing portion and a routing portion connected in series, and all the light sensors on the signal line are only arranged in series in the sensing portion; wherein the sensing portions and routing portions of adjacent signal lines are arranged alternately.

[0010] Optionally, each of the signal lines is divided into a sensing part and a routing part connected in series, and all the light sensors on the signal line are only arranged in series in the sensing part; wherein, in the direction from the first signal line to the last signal line, the length of the sensing part first increases and then decreases, and in the first half of the signal lines, the sensing part is located on the side of the routing part away from the determination module, and in the second half of the signal lines, the sensing part is located between the routing part and the determination module.

[0011] The embodiment of the present application further discloses a brightness control method of a display panel, which is used to control the brightness of the display panel as described above. The brightness control method comprises the steps of: Get the display mode of the display panel; When it is detected that the display panel is in the horizontal screen mode, simultaneously detecting whether the light sensors located in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked; and When it is detected that parts of the light sensors in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked at the same time, it is determined that the display panel is in a false touch state, and the brightness of the display panel is kept unchanged.

[0012] Optionally, the photosensitive areas located at the two ends of the first side of the display panel are respectively defined as the first photosensitive area and the second photosensitive area, and the photosensitive areas located at the two ends of the second side of the display panel are respectively defined as the third photosensitive area and the fourth photosensitive area; the first photosensitive area, the second photosensitive area, the third photosensitive area and the fourth photosensitive area each include at least four sub-photosensitive areas arranged in an array, and each of the sub-photosensitive areas is provided with at least one light sensor; in the step of determining that the display panel is in a false touch state and keeping the brightness of the display panel unchanged when it is detected that part of the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked, when part of the light sensors in the sub-photosensitive areas in the first photosensitive area or the second photosensitive area are blocked, and part of the light sensors in the sub-photosensitive areas in the third photosensitive area or the fourth photosensitive area are blocked, it is determined that the display panel is in a false touch state and the brightness of the display panel is kept unchanged.

[0013] Optionally, when it is detected that all the light sensors in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked, it is detected whether the light sensors in the photosensitive areas on the third side of the display panel and the fourth side of the display panel are all blocked; if the light sensors in at least part of the photosensitive areas on the third side of the display panel and the fourth side of the display panel are not blocked, it is determined that the display panel is in a false touch state, and the brightness of the display panel is kept unchanged; wherein, the third side of the display panel and the fourth side of the display panel are respectively the upper and lower sides of the display panel when the display panel is in landscape mode.

[0014] An embodiment of the present application further discloses a display device, which includes a driving circuit and the display panel as described above, wherein the driving circuit is used to drive the display panel.

[0015] The beneficial effects of the embodiments of the present application are as follows: the embodiments of the present application detects through a determination module whether only part of the light sensors in the photosensitive areas of the first side and the second side of the display panel are blocked when the display panel is in the landscape mode. If so, it is determined that the display panel is in a false touch state and the brightness of the display panel is kept unchanged; otherwise, normal dimming is performed to avoid incorrect dimming of the display panel due to false touch during use, thereby affecting the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 is a schematic diagram of a display device provided in an embodiment of the present application; Figure 2 is a schematic diagram of a display panel combined with a signal line provided in an embodiment of the present application; Figure 3 is a schematic diagram of a display panel combined with a light sensor design provided in an embodiment of the present application; Figure 4 It is a schematic diagram of a switching current; Figure 5 is a schematic diagram of a signal line provided in an embodiment of the present application; Figure 6 is a schematic diagram of another signal line provided in an embodiment of the present application; Figure 7 is a partial schematic diagram of a display panel provided in an embodiment of the present application; Figure 8 It is a flow chart of a brightness control method of a display panel provided in an embodiment of the present application; Fig. 9 It is a schematic diagram of a display panel provided in an embodiment of the present application.

[0017] Among them, 10, display device; 100, display panel; 110, pattern recognition module; 120, determination module; 130, dimming module; 140, first side of display panel; 150, second side of display panel; 160, color film substrate; 161, light blocking layer; 170, array substrate; 200, photosensitive area; 210, first photosensitive area; 211, first sub-photosensitive area; 212, second sub-photosensitive area; 213, third sub-photosensitive area; 214, fourth sub-photosensitive area; 220, second photosensitive area; 230, third photosensitive area; 240, fourth photosensitive area; 300, light sensor; 400, signal line; 410, sensing unit; 420, routing unit; 500, data line; 600, scanning line; 700, active switch; 800, driving circuit. DETAILED DESCRIPTION

[0018] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0019] In addition, unless otherwise clearly specified or limited, "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] Figure 1 is a schematic diagram of a display device provided in an embodiment of the present application, such as Figure 1 As shown, the display device 10 includes a driving circuit 800 and a display panel 100, wherein the driving circuit 800 is used to drive the display panel 100. The display panel 100 may be a liquid crystal display (LCD) panel, or an organic light-emitting diode (OLED) panel or other types of display panels 100, which are not limited herein.

[0021] like Figure 1As shown, the display area of ​​the display panel 100 is divided into a plurality of photosensitive areas 200 distributed in an array, and each side of the display panel 100 has a plurality of the photosensitive areas 200. It should be noted that: Figure 1 The example of dividing the display area into nine photosensitive areas 200 of equal size is used for illustration, but it does not mean that there can only be nine photosensitive areas 200 in the embodiment of the present application, nor does it mean that the areas of all photosensitive areas 200 must be the same. The specific number and size of the photosensitive areas 200 are determined by the characteristics of different display products and are not limited here.

[0022] At least one light sensor 300 is provided in each of the photosensitive areas 200, and the display panel 100 includes a pattern recognition module 110, a determination module 120, and a dimming module 130, which are integrated in the driving circuit 800 to improve the integration of the chip in which the driving circuit 800 is located. The pattern recognition module 110 is used to identify the display mode of the display panel 100, specifically, to identify whether the display screen of the display panel 100 is in a horizontal screen state or a vertical screen state.

[0023] The determination module 120 is connected to the pattern recognition module 110, the light sensors 300 in all the photosensitive areas 200 on the first side 140 of the display panel, and the light sensors 300 in all the photosensitive areas 200 on the second side 150 of the display panel. When the display panel 100 enters the horizontal screen mode, if part of the light sensors 300 in the photosensitive areas 200 on the first side 140 of the display panel and the second side 150 of the display panel are blocked at the same time, it is determined that the display panel 100 is in a false touch state and a false touch signal is sent; the dimming module 130 is used to adjust the brightness of the display panel 100, and the dimming module 130 is connected to the determination module 120. When the false touch signal is received, the dimming module 130 keeps the brightness of the display panel 100 unchanged; wherein, the first side 140 of the display panel and the second side 150 of the display panel are respectively the left and right sides of the display panel 100 when it is in the horizontal screen mode.

[0024] like Figure 1 As shown, Figure 12 is a schematic diagram of a display panel in a portrait state. At this time, the nine photosensitive areas 200 in the display panel 100 are respectively defined as photosensitive area A, photosensitive area B, photosensitive area C, photosensitive area D, photosensitive area E, photosensitive area F, photosensitive area G, photosensitive area H, and photosensitive area I. As an example of a specific game scenario, when playing a game in a landscape state, the user's hands hold the two sides of the display product. At this time, the fingers of the user's hands are likely to cover the two areas of photosensitive area A and photosensitive area G, or cover the photosensitive areas C and If the light sensors 300 in the two areas of photosensitive area A and photosensitive area G are blocked, or the light sensors 300 in the two areas of photosensitive area C and photosensitive area I are blocked, or in other ways, one of the three photosensitive areas A, photosensitive area B, and photosensitive area C and one of the three photosensitive areas G, photosensitive area H, and photosensitive area I are blocked, it is judged as a false blockage and false touch state, and the screen brightness of the display panel 100 is controlled to remain at the current brightness.

[0025] If the light sensors 300 in all the photosensitive areas 200 on the first side 140 of the display panel and the second side 150 of the display panel are blocked, it means that both sides of the display panel 100 are blocked in the horizontal screen state. In the horizontal screen state, the user generally does not keep both sides of the display panel 100 blocked while watching a movie or playing a game, because this will affect the display picture and make it impossible to control the display panel 100. Therefore, when the light sensors 300 in all the photosensitive areas 200 on the first side 140 of the display panel and the second side 150 of the display panel are blocked, it can be determined that the display panel 100 has entered a dark state area, or the entire display panel 100 is blocked, rather than being in a false touch state, and therefore dimming can be performed.

[0026] In the embodiment of the present application, the determination module 120 detects whether only part of the light sensors 300 in the photosensitive area 200 of the first side 140 and the second side 150 of the display panel are blocked when the display panel 100 is in the landscape mode. If so, it is determined that the display panel 100 is in a false touch state and the brightness of the display panel 100 is kept unchanged; if not, normal dimming is performed to avoid incorrect dimming of the display panel 100 due to false touch during use, thereby affecting the user experience.

[0027] like Figure 2As shown, as an implementation in the embodiment of the present application, the display panel 100 includes a plurality of signal lines 400 arranged in parallel, and the plurality of signal lines 400 are evenly distributed in the display panel 100, each of the signal lines 400 passes through a plurality of the photosensitive areas 200 and connects a plurality of light sensors 300 in series, and one end of the signal line 400 is connected to a preset voltage V0 (the size of the preset voltage is designed according to the characteristics of different products), and the preset voltage V0 passes through all the light sensors 300 on the corresponding signal line 400 and is output to the determination module 120; when the display panel 100 enters the horizontal screen mode, if the dimming module 130 receives a change in the preset voltage V0 output by some of the signal lines 400, it is determined that the display panel 100 is in a false touch state.

[0028] Since the light sensor 300 outputs different current signals when it is sensitive to light and when it is blocked, this embodiment connects a row or a column of light sensors 300 in series, detects and analyzes the signal lines 400 output by all signal lines 400 through the determination module 120, identifies the signal lines 400 of the light sensors 300 that are blocked, and then analyzes which light sensing areas 200 are blocked, determines whether the conditions of the false touch state are met, and then notifies the dimming module 130 to dim or maintain brightness. In addition, this embodiment is conducive to reducing the number of wiring and reducing the calculation requirements of the determination module 120.

[0029] In other embodiments, each light sensor 300 is respectively connected to the determination module 120, and the determination module 120 identifies the state of each light sensor 300, and finally determines whether the display panel 100 is in a false touch state according to the position of the blocked light sensor 300.

[0030] like Figure 3 As shown, the display panel 100 includes a plurality of data lines 500 and a plurality of scan lines 600 that are crisscrossed, and the plurality of data lines 500 and the plurality of scan lines 600 divide the display panel 100 into a plurality of pixels distributed in an array, and the display panel 100 also includes an active switch 700 for driving the pixels.

[0031] Moreover, in this embodiment, the optical sensor 300 is a thin film transistor, and the optical sensor 300 and the active switch 700 are formed in the same process to reduce the cost of additionally producing the optical sensor 300. The signal line 400 is arranged in parallel with the data line 500, the source and drain of the adjacent optical sensors 300 on the same signal line 400 are connected, the gates of the optical sensors 300 and the active switch 700 in the same row are connected to the same scanning line 600, and the optical sensor 300 and the active switch 700 are of different types, that is, when the active switch 700 is an N-type MOS tube, the optical sensor 300 is a P-type MOS tube; and when the active switch 700 is a P-type MOS tube, the optical sensor 300 is an N-type MOS tube.

[0032] Through the above design, the control circuit design of the light sensor 300 is omitted, the number of wirings in the display panel 100 is further reduced, and the aperture ratio is avoided from decreasing. Moreover, the light sensor 300 and the active switch 700 are of different types. When the light sensor 300 is driven, the driving signal will not interfere with the active switch 700; when the active switch 700 is driven, the driving signal will not interfere with the light sensor 300. Among them, the driving signal of the light sensor 300 can be output when scanning other rows of pixels, or when scanning the blank row scanning line 600, or in the gap between two adjacent frames. Moreover, in other embodiments, the light sensor 300 may not adopt a thin film transistor design, but may be an ordinary photodiode or other methods; or the light sensor 300 adopts a thin film transistor design, but does not adopt a synchronous process with the active switch 700, and the specific selection is made according to the actual situation.

[0033] like Figure 4 As shown, in the present embodiment, since the photogenerated carriers affect the switching current of the thin film transistor, since the output end of each signal line 400 is connected to the determination module 120, the normal leakage current before illumination or shielding monitored by the determination module 120 is P1, and the leakage current after illumination or shielding is P2. When the corresponding position of a certain signal line 400 is blocked, the light intensity will change, and the leakage current of the light sensor 300 connected in series thereto will change. Then, the determination module 120 will obtain a current change ΔP=P1-P2, and judge the light intensity change by monitoring ΔP, and then analyze whether the display panel 100 is in a false touch state.

[0034] In this embodiment, the scanning line 600 connected to the light sensor 300 outputs a scanning signal in the scanning phase of each frame, and outputs a sensing signal in the adjacent frame. The scanning signal is used to turn on the corresponding active switch 700, and the sensing signal is used to turn on the corresponding light sensor 300. The scanning line 600 not connected to the light sensor 300 only outputs a scanning signal.

[0035] In normal display, when a frame ends, the driving circuit 800 will output a reset signal to reset the scanning signal. At this time, all the light sensors 300 on the signal line 400 are turned on. The determination module 120 can monitor the current changes of all signal lines 400 and determine the changes in the light intensity above the screen to determine whether it is a false occlusion, so as to perform correct dimming. Through the above design, all occlusion positions can be identified at the same time, improving the recognition accuracy and efficiency.

[0036] In some embodiments, the display panel 100 is a touch panel, and the signal line 400 is a redundant touch line, that is, a touch line that is not connected to a touch sensor, or a touch line that does not participate in a touch function. Since a touch panel will pre-design a portion of touch lines for backup when designing touch lines, this embodiment uses redundant touch lines as signal lines 400 for transmitting light sensor signals to further reduce the number of wirings in the display panel 100.

[0037] In this embodiment, the size of the optical sensor 300 can also be designed according to different product characteristics. This embodiment is not limited to this, but the purpose is to maximize the width-to-length ratio of the optical sensor 300 and increase the thickness of the semiconductor layer in the optical sensor 300 to maximize the photosensitivity of the optical sensor 300.

[0038] As a further embodiment, Figure 5 As shown, each of the signal lines 400 is divided into two parts, the upper and lower parts, that is, the signal line 400 is divided into a sensing part 410 and a routing part 420 connected in series, and all the light sensors 300 on the signal line 400 are only arranged in series in the sensing part 410; wherein, the sensing parts 410 and the routing parts 420 of adjacent signal lines 400 are arranged alternately, that is, the sensing part 410 in the first signal line 400 is on the upper side, and the routing part 420 is on the lower side; the sensing part 410 in the second signal line 400 is on the lower side, and the routing part 420 is on the upper side; the sensing part 410 in the third signal line 400 is on the upper side, and the routing part 420 is on the lower side, and so on.

[0039] Taking the application scenario of playing games in horizontal mode as an example, if the finger covers the area where the first to tenth signal lines 400 are located, the light intensity in this area will become weaker, and the leakage current of the corresponding thin-film transistor will change, and the judgment module 120 will receive a ΔP signal. However, there are gaps between the fingers, and the first to tenth signal lines 400 theoretically will not monitor current changes at the same time. If the judgment module 120 receives feedback signals from the first to tenth signal lines 400 at the same time, it will be judged as non-false occlusion, and dimming will be performed; if the judgment module 120 does not monitor the feedback signals from the first to tenth signal lines 400 at the same time, for example, if the feedback signal from the sixth signal line 400 is not received, it will be judged as a false occlusion in the gaming scenario, and dimming will not be performed to keep the screen brightness unchanged. Adopt Figure 4 After the corresponding design, firstly, the number of light sensors 300 is reduced, thereby reducing the cost; secondly, when the signals on multiple signal lines 400 in an area change, it means that the light sensors 300 on both sides of the area in the horizontal screen state are blocked, thereby identifying the false blockage without the need for complex calculations, and only needs to detect whether the signal on the signal line 400 has changed, thereby reducing the difficulty of the determination module 120 in determining the false touch state.

[0040] As another further implementation, Figure 6 As shown, each of the signal lines 400 is divided into a sensing portion 410 and a routing portion 420 connected in series, and all the optical sensors 300 on the signal line 400 are only arranged in series in the sensing portion 410; wherein, from the first signal line 400 to the last signal line 400, the length of the sensing portion 410 first increases and then decreases, and in the first half of the signal lines 400, the sensing portion 410 is located on the side of the routing portion 420 away from the determination module 120, and in the second half of the signal lines 400, the sensing portion 410 is located between the routing portion 420 and the determination module 120.

[0041] As a specific example of this embodiment, if there are only seven signal lines 400 in total, the length of the sensing part 410 in the first signal line 400 is one quarter of the length of the signal line 400, the length of the sensing part 410 in the second signal line 400 is one half of the length of the signal line 400, the length of the sensing part 410 in the third signal line 400 is three quarters of the length of the signal line 400, the length of the sensing part 410 in the fourth signal line 400 is equal to the length of the signal line 400, the length of the sensing part 410 in the fifth signal line 400 is one quarter of the length of the signal line 400, the length of the sensing part 410 in the sixth signal line 400 is one half of the length of the signal line 400, and the length of the sensing part 410 in the seventh signal line 400 is three quarters of the length of the signal line 400. Moreover, in the first signal line 400, the second signal line 400 and the third signal line 400, the sensing unit 410 is located on the side of the routing unit 420 away from the determination module 120; in the fifth signal line 400, the sixth signal line 400 and the seventh signal line 400, the sensing unit 410 is located between the routing unit 420 and the determination module 120. Figure 5 After the corresponding design, the number of light sensors 300 can also be reduced, and the accuracy of the photosensing function can be improved.

[0042] Through the above design, the problem of incorrect light adjustment due to the light sensor 300 being incorrectly blocked in different products and different usage scenarios is solved, thereby improving the user experience.

[0043] like Figure 7 As shown, in the embodiment of the present application, when the display panel 100 is a liquid crystal panel, the light sensor 300 and the active switch 700 are both arranged on the array substrate 170, and a light blocking layer 161 for blocking the active switch 700 is provided on the color film substrate 160 to prevent the active switch 700 from generating leakage current and affecting the display; while a structure for blocking the light sensor 300 is not provided on the color film substrate 160, or the light blocking layer 161 above the light sensor 300 is dug up, so that external ambient light can irradiate the light sensor 300.

[0044] Correspondingly, such as Figure 8 As shown, the embodiment of the present application further discloses a brightness control method of a display panel, which is used to control the brightness of the display panel 100 as described above. The brightness control method comprises the steps of: S1: Get the display mode of the display panel; S2: when it is detected that the display panel is in the horizontal screen mode, simultaneously detecting whether the light sensors located in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked; S3: when it is detected that parts of the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked, it is determined that the display panel is in a false touch state, and the brightness of the display panel is kept unchanged.

[0045] The above design can avoid incorrect dimming of the display panel due to accidental touch during use, thereby affecting the user's experience.

[0046] Furthermore, in some embodiments, Fig. 9 As shown, the photosensitive areas 200 located at both ends of the first side 140 of the display panel are respectively defined as the first photosensitive area 210 and the second photosensitive area 220, and the photosensitive areas 200 located at both ends of the second side 150 of the display panel are respectively defined as the third photosensitive area 230 and the fourth photosensitive area 240; the first photosensitive area 210, the second photosensitive area 220, the third photosensitive area 230 and the fourth photosensitive area 240 each include at least four sub-photosensitive areas arranged in an array, and each of the sub-photosensitive areas is provided with at least one light sensor 300.

[0047] At this time, in step S3, when part of the light sensor 300 in the sub-photosensitive area of ​​the first photosensitive area 210 or the second photosensitive area 220 is blocked, and at the same time part of the light sensor 300 in the sub-photosensitive area of ​​the third photosensitive area 230 or the fourth photosensitive area 240 is blocked, it is determined that the display panel 100 is in a false touch state, and the brightness of the display panel 100 is kept unchanged.

[0048] In the above embodiment, in order to enhance the accuracy of the algorithm in judging false occlusion, the four areas of the first photosensitive area 210, the second photosensitive area 220, the third photosensitive area 230 and the fourth photosensitive area 240 are more finely partitioned using the gaming application scenario as an example. Taking the first photosensitive area 210 as an example, the first photosensitive area 210 is divided into a first sub-photosensitive area 211, a second sub-photosensitive area 212, a third sub-photosensitive area 213 and a fourth sub-photosensitive area 214. When playing a horizontal screen game, the finger blocks the screen, but the gap between the fingers will not completely block the entire first photosensitive area 210. For example, when the first photosensitive area 210 is blocked, the first sub-photosensitive area 211, the second sub-photosensitive area 212 and the third sub-photosensitive area 213 all sense the blockage, but the fourth sub-photosensitive area 214 is not blocked, it is judged as a false blockage and no dimming is performed; if all four small areas in the first photosensitive area 210 are blocked, and other areas also sense the blockage signal, it is judged as correct blockage and dimming is performed.

[0049] In some embodiments, when it is detected that all the light sensors in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked, it is detected whether the light sensors in the photosensitive areas on the third side of the display panel and the fourth side of the display panel are all blocked; if the light sensors in at least part of the photosensitive areas on the third side of the display panel and the fourth side of the display panel are not blocked, it is determined that the display panel is in a false touch state, and the brightness of the display panel is kept unchanged; wherein, the third side of the display panel and the fourth side of the display panel are the upper and lower sides of the display panel when it is in landscape mode, respectively. When under certain unexpected circumstances, the user holds the two sides of the display panel in landscape mode with both hands without operating the display panel, the two sides of the display panel are blocked at this time, but dimming is not required at this time. At this time, the upper and lower sides of the display panel in landscape mode can be further identified to determine whether the display panel is completely blocked at this time. This embodiment further considers the false touch problem caused by unexpected circumstances to improve the user experience.

[0050] Of course, in other embodiments, other detections may be used to determine whether the device is in a false touch state, which will not be described one by one here.

[0051] It should be noted that the limitations on the various steps involved in this solution are not considered to limit the order of the steps without affecting the implementation of the specific solution. The steps written in front can be executed first, or later, or even simultaneously. The solutions of different implementation embodiments can be combined and applied without conflict. As long as this solution can be implemented, it should be regarded as belonging to the scope of protection of this application.

[0052] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display area of ​​the display panel is divided into a plurality of photosensitive areas distributed in an array, each side of the display panel has a plurality of the photosensitive areas, and at least one light sensor is arranged in each of the photosensitive areas, and the display panel comprises: A mode recognition module, used to recognize the display mode of the display panel; a determination module connected to the pattern recognition module, the light sensors in all the photosensitive areas on the first side of the display panel, and the light sensors in all the photosensitive areas on the second side of the display panel, and when the display panel enters the landscape mode, if part of the light sensors in the photosensitive areas on both the first side and the second side of the display panel are blocked, determining that the display panel is in an error touch state, and sending an error touch signal; and A dimming module, used for adjusting the brightness of the display panel, the dimming module is connected to the determination module, and when receiving the false touch signal, the dimming module keeps the brightness of the display panel unchanged; The first side of the display panel and the second side of the display panel are respectively the left and right sides of the display panel when the display panel is in a horizontal screen mode.

2. The display panel according to claim 1, wherein: The display panel comprises a plurality of signal lines arranged in parallel, each of the signal lines passes through a plurality of the photosensitive areas and is connected in series with a plurality of the light sensors, one end of the signal line is connected to a preset voltage, and the preset voltage is output to the determination module after passing through all the light sensors on the corresponding signal line; When the display panel enters the horizontal screen mode, if the dimming module receives a change in the preset voltage output by some of the signal lines, it is determined that the display panel is in a false touch state.

3. The display panel according to claim 2, wherein: The display panel includes a plurality of data lines and a plurality of scan lines that are crisscrossed, the plurality of data lines and the plurality of scan lines divide the display panel into a plurality of pixels distributed in an array, and the display panel also includes an active switch for driving the pixels; The light sensor is a thin film transistor, and the light sensor and the active switch are formed by the same process; the signal line is arranged in parallel with the data line, the source and drain of adjacent light sensors on the same signal line are connected, the gates of the light sensors and the active switches in the same row are connected to the same scanning line, and the light sensors and the active switches are of different types.

4. The display panel according to claim 3, wherein: The scanning line connected to the light sensor outputs a scanning signal in the scanning phase of each frame and outputs a sensing signal in the adjacent frame. The scanning signal is used to turn on the corresponding active switch, and the sensing signal is used to turn on the corresponding light sensor. The scanning line not connected to the light sensor only outputs a scanning signal.

5. The display panel according to claim 2, wherein: Each of the signal lines is divided into a sensing part and a routing part connected in series, and all the optical sensors on the signal line are only connected in series in the sensing part; Wherein, the sensing parts and the routing parts of adjacent signal lines are arranged alternately.

6. The display panel according to claim 2, wherein: Each of the signal lines is divided into a sensing part and a routing part connected in series, and all the optical sensors on the signal line are only connected in series in the sensing part; Among them, in the direction from the first signal line to the last signal line, the length of the sensing part first increases and then decreases, and in the first half of the signal lines, the sensing part is located on the side of the routing part away from the determination module, and in the second half of the signal lines, the sensing part is located between the routing part and the determination module.

7. A method for controlling the brightness of a display panel, for controlling the brightness of a display panel according to any one of claims 1 to 6, characterized in that: The brightness control method comprises the steps of: Get the display mode of the display panel; When it is detected that the display panel is in the horizontal screen mode, simultaneously detecting whether the light sensors in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked; as well as When it is detected that parts of the light sensors in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked at the same time, it is determined that the display panel is in a false touch state, and the brightness of the display panel is kept unchanged.

8. The method for controlling the brightness of a display panel according to claim 7, wherein: The photosensitive areas at two ends of the first side of the display panel are defined as a first photosensitive area and a second photosensitive area, respectively, and the photosensitive areas at two ends of the second side of the display panel are defined as a third photosensitive area and a fourth photosensitive area, respectively; The first photosensitive area, the second photosensitive area, the third photosensitive area and the fourth photosensitive area each include at least four sub-photosensitive areas arranged in an array, and each of the sub-photosensitive areas is provided with at least one light sensor; In the step of determining that the display panel is in a false touch state and keeping the brightness of the display panel unchanged when it is detected that part of the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked, when part of the light sensors in the sub-photosensitive areas of the first photosensitive area or the second photosensitive area are blocked and part of the light sensors in the sub-photosensitive areas of the third photosensitive area or the fourth photosensitive area are blocked, it is determined that the display panel is in a false touch state and the brightness of the display panel is kept unchanged.

9. The method for controlling the brightness of a display panel according to claim 7, wherein: When it is detected that all the light sensors in the photosensitive areas on the first side of the display panel and the second side of the display panel are blocked, detecting whether all the light sensors in the photosensitive areas on the third side of the display panel and the fourth side of the display panel are blocked; If the light sensors in at least a portion of the photosensitive areas on the third side of the display panel and the fourth side of the display panel are not blocked, determining that the display panel is in a false touch state, and maintaining the brightness of the display panel unchanged; The third side of the display panel and the fourth side of the display panel are respectively the upper and lower sides of the display panel when the display panel is in the horizontal screen mode.

10. A display device, characterized in that: The device comprises a driving circuit and a display panel as claimed in any one of claims 1 to 6, wherein the driving circuit is used to drive the display panel.

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