Display panel, brightness control method thereof, and display device

Abstract

The present application discloses a display panel, a brightness control method thereof, and a display device. The display panel includes a mode recognition module, a determination module, and a dimming module. The determination module is connected to the mode recognition module, light sensors in all photosensitive areas on the first side of the display panel, and light sensors in all photosensitive areas on the second side of the display panel. When the display panel enters the landscape mode, if some of the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked simultaneously, it is determined that the display panel is in a mis-touch state, and a mis-touch signal is sent out. When receiving the mis-touch signal, the dimming module keeps the brightness of the display panel unchanged. Wherein, the first side and the second side of the display panel are the left and right sides respectively when in the landscape mode. Through the above design, it is possible to avoid incorrect dimming caused by mis-touch during the use of the display product, and avoid affecting the user experience.

Description

Technical Field

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

[0002] With the development of display technologies, liquid crystal display panels (LCDs) have become increasingly popular due to their advantages such as being lightweight and having low radiation. A liquid crystal display panel includes an array substrate and a color filter substrate disposed opposite to each other, as well as a liquid crystal layer disposed therebetween. By controlling the deflection of the liquid crystal, the adjustment of brightness is achieved. Currently, a light sensor is usually provided in the liquid crystal display panel to sense the ambient light brightness, and then the display brightness of the liquid crystal display panel is adjusted according to the ambient light brightness to meet the user's needs.

[0003] Currently, in display products with automatic dimming technology, the ambient light sensor is usually disposed at the upper and lower edges of the display screen. During the use of the display product by the user, the ambient light sensor is extremely likely to be 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, thereby causing the ambient light sensor to receive an incorrect change amount of the ambient light, and thus incorrectly performing dimming, resulting in the screen becoming darker and affecting the use; or when only the position of the ambient light sensor is blocked in other cases, the screen will perform incorrect dimming. Summary of the Invention

[0004] The objective of the embodiments of this application is to provide a display panel, a brightness control method thereof, and a display device, so as to avoid incorrect dimming caused by accidental touch during the use of the display product and affect the use experience.

[0005] An embodiment of the present application discloses a display panel. 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 photosensor is disposed in each of the photosensitive areas. The display panel includes a pattern recognition module, a determination module, and a dimming module. The pattern recognition module is configured to recognize the display mode of the display panel. The determination module is connected to the pattern recognition module, the photosensors in all the photosensitive areas on the first side of the display panel, and the photosensors in all the photosensitive areas on the second side of the display panel. When the display panel enters the landscape mode, if some of the photosensors in the photosensitive areas on the first side and the second side of the display panel are blocked simultaneously, it is determined that the display panel is in a mis-touch state, and a mis-touch signal is sent out. The dimming module is configured to adjust the brightness of the display panel. The dimming module is connected to the determination module. When receiving the mis-touch signal, the dimming module keeps the brightness of the display panel unchanged. Wherein, the first side and the second side of the display panel are respectively the left and right sides of the display panel when it is in the landscape mode.

[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 the photosensors in series. 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 photosensors on the corresponding signal line. When the display panel enters the landscape 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 mis-touch state.

[0007] Optionally, the display panel includes a plurality of data lines and a plurality of scan lines that intersect vertically and horizontally. The plurality of data lines and the plurality of scan lines divide the display panel into a plurality of pixels distributed in an array. The display panel further includes an active switch for driving the pixels. The photosensor is a thin film transistor, and the photosensor is formed in the same process as the active switch. The signal line is arranged in parallel with the data line. The source and drain of adjacent photosensors on the same signal line are connected. The gates of the photosensors and the active switch in the same row are connected to the same scan line, and the types of the photosensors and the active switch are different.

[0008] Optionally, the scan line connected to the photosensor outputs a scan signal during the scan stage of each frame and outputs a sensing signal in adjacent frames. The scan signal is used to turn on the corresponding active switch, and the sensing signal is used to turn on the corresponding photosensor. The scan line not connected to the photosensor only outputs a scan signal.

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

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

[0011] An embodiment of the present application also discloses a method for controlling the brightness of a display panel, which is used to control the brightness of the display panel as described above. The brightness control method includes the steps of:

[0012] Obtain the display mode of the display panel;

[0013] When it is detected that the display panel is in the landscape mode, simultaneously detect whether the optical sensors in the photosensitive areas on the first side and the second side of the display panel are blocked; and

[0014] When it is detected that some of the optical sensors in the photosensitive areas on the first side and the second side of the display panel are blocked at the same time, determine that the display panel is in a mis-touch state, and keep the brightness of the display panel unchanged.

[0015] Optionally, the photosensitive areas at both ends of the first side of the display panel are respectively defined as a first photosensitive area and a second photosensitive area, and the photosensitive areas at both ends of the second side of the display panel are respectively defined as a third photosensitive area and a fourth photosensitive area; each of the first photosensitive area, the second photosensitive area, the third photosensitive area, and the fourth photosensitive area includes at least four sub-photosensitive areas arranged in an array, and at least one optical sensor is provided in each sub-photosensitive area; in the step of determining that the display panel is in a mis-touch state and keeping the brightness of the display panel unchanged when it is detected that some of the optical sensors in the photosensitive areas on the first side and the second side of the display panel are blocked at the same time, when some of the optical sensors in the sub-photosensitive areas in the first photosensitive area or the second photosensitive area are blocked, and at the same time some of the optical sensors in the sub-photosensitive areas in the third photosensitive area or the fourth photosensitive area are blocked, determine that the display panel is in a mis-touch state and keep the brightness of the display panel unchanged.

[0016] Optionally, when it is detected that all the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked, it is detected whether all the light sensors in the photosensitive areas on the third side and the fourth side of the display panel are blocked; if at least some of the light sensors in the photosensitive areas on the third side 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 and the fourth side of the display panel are respectively the upper and lower sides when the display panel is in the landscape mode.

[0017] An embodiment of the present application also discloses a display device, which includes a driving circuit and the display panel as described above, and the driving circuit is used to drive the display panel.

[0018] The beneficial effects of the embodiments of the present application are as follows: Through the determination module in the embodiments of the present application, when the display panel is in the landscape mode, it is detected whether only some of the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked at the same time. 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; if not, normal dimming is performed, so as to avoid incorrect dimming of the display panel caused by false touch during use, and further affect the user experience. Description of the Drawings

[0019] The accompanying drawings included are used to provide a further understanding of the embodiments of the present application, and they form a part of the description, and are used to illustrate the embodiments of the present application and, together with the text description, to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0020] Figure 1 is a schematic diagram of a display device provided by an embodiment of the present application;

[0021] Figure 2 is a schematic diagram of a display panel combined with signal lines provided by an embodiment of the present application;

[0022] Figure 3 is a schematic diagram of a display panel combined with a light sensor design provided by an embodiment of the present application;

[0023] Figure 4 is a schematic diagram of a switching current;

[0024] Figure 5 is a schematic diagram of a signal line provided by an embodiment of the present application;

[0025] Figure 6It is a schematic diagram of another signal line provided by an embodiment of the present application;

[0026] Figure 7 It is a partial schematic diagram of a display panel provided by an embodiment of the present application;

[0027] Figure 8 It is a schematic flowchart of a brightness control method for a display panel provided by an embodiment of the present application;

[0028] Figure 9 It is a schematic diagram of a display panel provided by an embodiment of the present application.

[0029] Among them, 10 is a display device; 100 is a display panel; 110 is a pattern recognition module; 120 is a determination module; 130 is a dimming module; 140 is the first side of the display panel; 150 is the second side of the display panel; 160 is a color filter substrate; 161 is a light-shielding layer; 170 is an array substrate; 200 is a photosensitive area; 210 is a first photosensitive area; 211 is a first sub-photosensitive area; 212 is a second sub-photosensitive area; 213 is a third sub-photosensitive area; 214 is a fourth sub-photosensitive area; 220 is a second photosensitive area; 230 is a third photosensitive area; 240 is a fourth photosensitive area; 300 is a light sensor; 400 is a signal line; 410 is a sensing part; 420 is a routing part; 500 is a data line; 600 is a scanning line; 700 is an active switch; 800 is a driving circuit. Detailed implementation manners

[0030] It should be understood that the terms, specific structures and functional details disclosed here are only for describing specific embodiments and are representative, but the present application can be specifically implemented in many alternative forms and should not be construed as being limited only to the embodiments described herein.

[0031] In addition, unless otherwise clearly specified and limited, "connected" and "coupled" 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 directly connected or indirectly connected through an intermediate medium, or the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0032] Figure 1 It is a schematic diagram of a display device provided by an embodiment of the present application, as Figure 1As shown in the figure, the display device 10 includes a driving circuit 800 and a display panel 100, and the driving circuit 800 is used to drive the display panel 100. Among them, the display panel 100 may be a liquid crystal (Liquid Crystal Display, LCD) panel, an organic light-emitting diode (Organic Light-Emitting Diode, OLED) panel or other types of display panels 100, which are not limited herein.

[0033] As Figure 1 shown in the figure, 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 taking the display area being divided into 9 equal-sized photosensitive areas 200 as an example for illustration, but it does not mean that there can only be 9 photosensitive areas 200 in the embodiments of the present application, nor does it mean that all the photosensitive areas 200 have to be of the same area. The specific number and size of the photosensitive areas 200 are determined by the characteristics of different display products themselves, which are not limited herein.

[0034] In each of the photosensitive areas 200, at least one light sensor 300 is provided. The display panel 100 includes a pattern recognition module 110, a determination module 120, and a dimming module 130. The pattern recognition module 110, the determination module 120, and the dimming module 130 are integrated in the driving circuit 800 to improve the integration of the chip where the driving circuit 800 is located. Among them, the pattern recognition module 110 is used to recognize the display mode of the display panel 100, specifically to recognize whether the display screen of the display panel 100 is in a landscape state or a portrait state.

[0035] 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 landscape mode, if the light sensors 300 in some of the photosensitive areas 200 on the first side 140 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 mis-touch state and a mis-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 receiving the mis-touch signal, the dimming module 130 keeps the brightness of the display panel 100 unchanged; among them, the first side 140 and the second side 150 of the display panel are the left and right sides of the display panel 100 when it is in the landscape mode, respectively.

[0036] As Figure 1 shown in the figureFigure 1 It is a schematic diagram when the display panel is in the 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 games in the landscape state, the user's hands will hold both sides of the display product. At this time, the fingers of the user's hands are likely to cover these two areas of photosensitive area A and photosensitive area G, or cover these two areas of photosensitive area C and photosensitive area I. Then, when the photosensors 300 in the two areas of photosensitive area A and photosensitive area G alone are blocked, or the photosensors 300 in the two areas of photosensitive area C and photosensitive area I alone are blocked, or in other ways, when one of photosensitive area A, photosensitive area B, and photosensitive area C and one of photosensitive area G, photosensitive area H, and photosensitive area I are blocked, it is determined as a mis-blocking and mis-touch state. At this time, the screen brightness of the display panel 100 is controlled to remain the current brightness.

[0037] If the photosensors 300 in all the photosensitive areas 200 on the first side 140 and the second side 150 of the display panel are blocked, it means that both sides of the display panel 100 are covered when in the landscape state. Since in the landscape state, users generally do not cover both sides of the display panel 100 at the same time when watching movies or playing games, because this will affect the display screen and the display panel 100 cannot be manipulated. Therefore, when the situation where the photosensors 300 in all the photosensitive areas 200 on the first side 140 and the second side 150 of the display panel appear to be blocked, it can be determined that the display panel 100 enters the dark state area at this time, or the entire display panel 100 is blocked, rather than being in a mis-touch state. Therefore, dimming can be performed.

[0038] In the embodiment of the present application, the determination module 120 detects whether only some of the photosensors 300 in the photosensitive areas 200 on the first side 140 and the second side 150 of the display panel 100 are blocked at the same time when the display panel 100 is in the landscape mode. If so, it is determined that the display panel 100 is in a mis-touch state, and the brightness of the display panel 100 remains unchanged; if not, normal dimming is performed, thereby avoiding incorrect dimming of the display panel 100 caused by mis-touch during use, and further affecting the user experience.

[0039] Such as Figure 2As shown, as an implementation manner in the embodiments of the present application, the display panel 100 includes multiple signal lines 400 arranged in parallel. The multiple signal lines 400 are evenly distributed in the display panel 100. Each signal line 400 passes through multiple photosensitive areas 200 to serially connect multiple optical sensors 300. One end of the signal line 400 is connected to a preset voltage V0 (the magnitude of the preset voltage is designed according to the characteristics of different products). The preset voltage V0 outputs to the determination module 120 after passing through all the optical sensors 300 on the corresponding signal line 400. When the display panel 100 enters the landscape mode, if the dimming module 130 receives that the preset voltage V0 output by some of the signal lines 400 changes, it is determined that the display panel 100 is in a state of accidental touch.

[0040] Since the optical sensor 300 outputs different current signals when it is photosensitive and when it is blocked, in this implementation manner, one row or one column of optical sensors 300 are connected in series. The determination module 120 detects and analyzes the signal lines 400 output by all the signal lines 400, identifies the signal lines 400 where the blocked optical sensors 300 exist, and then analyzes which photosensitive areas 200 are blocked, determines whether the conditions for the accidental touch state are met, and then notifies the dimming module 130 to perform dimming or brightness maintenance. Moreover, this implementation manner is beneficial to reducing the number of wirings and reducing the calculation requirements of the determination module 120.

[0041] In other implementation manners, each optical sensor 300 is respectively connected to the determination module 120. The determination module 120 identifies the state of each optical sensor 300, and finally determines whether the display panel 100 is in a state of accidental touch according to the position of the blocked optical sensor 300.

[0042] As Figure 3 As shown, in the display panel 100, it includes multiple data lines 500 and multiple scan lines 600 that intersect vertically and horizontally. The multiple data lines 500 and the multiple scan lines 600 divide the display panel 100 into multiple pixels distributed in an array. The display panel 100 further includes an active switch 700 for driving the pixels.

[0043] Moreover, in the present embodiment, the photosensor 300 is a thin film transistor, and the photosensor 300 and the active switch 700 are formed in the same process to reduce the cost of additionally manufacturing the photosensor 300. The signal line 400 is arranged in parallel with the data line 500. The source and drain of adjacent photosensors 300 on the same signal line 400 are connected. The gates of the photosensors 300 and the active switches 700 in the same row are connected to the same scan line 600, and the types of the photosensors 300 and the active switches 700 are different. That is, when the active switch 700 is an N-type MOS transistor, the photosensor 300 is a P-type MOS transistor; when the active switch 700 is a P-type MOS transistor, the photosensor 300 is an N-type MOS transistor.

[0044] Through the above design, the control circuit design of the photosensor 300 is omitted, further reducing the number of wirings in the display panel 100 and avoiding the decrease in the aperture ratio. Moreover, since the types of the photosensor 300 and the active switch 700 are different, when the photosensor 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 photosensor 300. Among them, the driving signal of the photosensor 300 can be output when scanning other rows of pixels, or when scanning the blank row scan line 600, or during the interval between two adjacent frames. Moreover, in other embodiments, the photosensor 300 may not adopt the thin film transistor design and may be an ordinary photodiode or other means; or the photosensor 300 adopts the thin film transistor design but is not formed in the same process as the active switch 700, which is specifically selected according to the actual situation.

[0045] As Figure 4 shown, in the present embodiment, since photo-generated carriers affect the switching current of the thin film transistor, and since the output end of each signal line 400 is connected to the determination module 120, the normal leakage current magnitude monitored by the determination module 120 before being illuminated or blocked is P1, and the leakage current magnitude after being illuminated or blocked is P2. When a corresponding position on a certain signal line 400 is blocked, the light intensity changes, and then the leakage current of the photosensor 300 connected in series thereon changes. Then, the determination module 120 will obtain a current change amount ΔP = P1 - P2. By monitoring ΔP, the light intensity change is judged, and then it is analyzed whether the display panel 100 is in a mis-touch state.

[0046] In this embodiment, the scan line 600 connected to the optical sensor 300 outputs a scan signal during the scan phase of each frame and outputs a sensing signal in adjacent frames. The scan signal is used to turn on the corresponding active switch 700, and the sensing signal is used to turn on the corresponding optical sensor 300. The scan line 600 not connected to the optical sensor 300 only outputs a scan signal.

[0047] During normal display, when a frame ends, the driving circuit 800 outputs a Reset signal to reset the scan signal. At this time, all the optical sensors 300 on the signal line 400 are turned on. The determination module 120 can then monitor the current changes of all the signal lines 400 to determine the light intensity change above the screen, so as to determine whether there is a false occlusion and perform correct dimming. Through the above design, all occlusion positions can be identified simultaneously, improving the identification accuracy and efficiency.

[0048] In some embodiments, the display panel 100 uses a touch panel, and the signal line 400 is an extra touch line, that is, a touch line not connected to the touch sensor, or a touch line not participating in the touch function. Since the touch panel will pre-design some extra touch lines for backup when designing the touch lines, this embodiment uses the extra touch lines as the signal lines 400 for transmitting the optical sensor signals to further reduce the number of wirings in the display panel 100.

[0049] In this embodiment, the size of the optical sensor 300 can also be designed according to different product characteristics. This embodiment does not limit it here, but the principle is to increase the aspect ratio of the optical sensor 300 as much as possible and increase the thickness of the semiconductor layer in the optical sensor 300 to improve the photosensitive characteristics of the optical sensor 300 as much as possible.

[0050] As a further embodiment, as Figure 5 shown, each signal line 400 is divided into upper and lower parts, that is, the signal line 400 is divided into a series-connected sensing part 410 and a routing part 420. All the optical sensors 300 on the signal line 400 are only serially arranged in the sensing part 410; among them, 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.

[0051] Taking the application scenario of playing games in landscape mode as an example, if a finger covers the area where the first signal line 400 to the tenth signal line 400 are located, the light intensity in this area becomes weaker, and the drain current magnitude of the corresponding thin-film transistor changes. The determination module 120 will receive a ΔP signal. However, there are gaps between fingers, and theoretically, the current changes of the first signal line 400 to the tenth signal line 400 will not be detected simultaneously. If the determination module 120 receives the feedback signals of the first signal line 400 to the tenth signal line 400 simultaneously, it is determined as non-false occlusion, and thus a dimming operation is performed; if the determination module 120 does not detect the feedback signals of the first signal line 400 to the tenth signal line 400 simultaneously, for example, it does not receive the feedback signal of the sixth signal line 400, it is determined as a false occlusion in the game scenario, and thus no dimming is performed, and the screen brightness remains unchanged. After adopting Figure 4 the corresponding design, first, the number of light sensors 300 is reduced, and the cost is lowered; second, when the signals on multiple signal lines 400 in an area change, it indicates that the light sensors 300 on both the left and right sides of this area in the landscape state are blocked, so false occlusion is identified. No complex calculation is required, and it only needs to detect whether the signals on the signal lines 400 change, thereby reducing the determination difficulty of the determination module 120 for the false touch state.

[0052] As another further implementation manner, as Figure 6 shown, each of the signal lines 400 is divided into a series-connected sensing part 410 and a routing part 420, and all the light sensors 300 on the signal line 400 are only connected in series in the sensing part 410; wherein, in the direction from the first signal line 400 to the last signal line 400, the length of the sensing part 410 first increases and then decreases, and in the first half of the signal lines 400, the sensing part 410 is located on the side of the routing part 420 away from the determination module 120, and in the second half of the signal lines 400, the sensing part 410 is located between the routing part 420 and the determination module 120.

[0053] As a specific example of this embodiment, if there are a total of seven signal lines 400, the length of the sensing portion 410 in the first signal line 400 is one-fourth of the length of the signal line 400, the length of the sensing portion 410 in the second signal line 400 is one-half of the length of the signal line 400, the length of the sensing portion 410 in the third signal line 400 is three-fourths of the length of the signal line 400, the length of the sensing portion 410 in the fourth signal line 400 is equal to the length of the signal line 400, the length of the sensing portion 410 in the fifth signal line 400 is one-fourth of the length of the signal line 400, the length of the sensing portion 410 in the sixth signal line 400 is one-half of the length of the signal line 400, and the length of the sensing portion 410 in the seventh signal line 400 is three-fourths 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 portion 410 is located on the side of the routing portion 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 portion 410 is located between the routing portion 420 and the determination module 120. After adopting Figure 5 the corresponding design, the number of optical sensors 300 can be reduced, and the accuracy of the photosensitive function can also be improved.

[0054] Through the above design, the problem of incorrect light adjustment due to the accidental occlusion of the optical sensor 300 in different products and different usage scenarios is solved, and the user experience is improved.

[0055] As Figure 7 shown, in the embodiment of the present application, when the display panel 100 is a liquid crystal panel, the optical sensor 300 and the active switch 700 are both disposed on the array substrate 170, and a light-shielding layer 161 for shielding the active switch 700 is provided on the color filter substrate 160 to prevent the active switch 700 from generating leakage current and affecting the display; while no structure for shielding the optical sensor 300 is provided on the color filter substrate 160, or the light-shielding layer 161 above the optical sensor 300 is dug out so that the external ambient light can irradiate the optical sensor 300.

[0056] Correspondingly, as Figure 8 shown, the embodiment of the present application also discloses a method for controlling the brightness of a display panel for controlling the brightness of the display panel 100 as described above. The brightness control method includes the steps of:

[0057] S1: Obtain the display mode of the display panel;

[0058] S2: When it is detected that the display panel is in the landscape mode, simultaneously detect whether the optical sensors in the photosensitive areas on the first side and the second side of the display panel are occluded;

[0059] S3: When it is detected that some of the light sensors in the photosensitive area are blocked on both the first side and the second side of the display panel 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.

[0060] With the above design, it is possible to avoid incorrect dimming of the display panel caused by false touch during use, thereby affecting the user experience.

[0061] Further, in some embodiments, as Figure 9 shown, the photosensitive areas 200 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 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; each of the first photosensitive area 210, the second photosensitive area 220, the third photosensitive area 230 and the fourth photosensitive area 240 includes at least four sub-photosensitive areas arranged in an array, and at least one light sensor 300 is provided in each sub-photosensitive area.

[0062] At this time, in step S3, when some of the light sensors 300 in the sub-photosensitive areas in the first photosensitive area 210 or the second photosensitive area 220 are blocked, and at the same time some of the light sensors 300 in the sub-photosensitive areas in the third photosensitive area 230 or the fourth photosensitive area 240 are 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.

[0063] In the above embodiment, to enhance the accuracy of the algorithm for false occlusion judgment, taking the application scenario of playing games as an example, 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 subjected to more refined zoning processing. 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 game in landscape mode and the finger blocks the screen, but there are gaps between the fingers and the entire first photosensitive area 210 is not completely blocked. 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, then it is judged as a false occlusion and no dimming is performed; if all four small areas in the first photosensitive area 210 are blocked and at the same time other areas also sense the occlusion signal, then it is judged as a correct occlusion and dimming is performed.

[0064] In some embodiments, when it is detected that all the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked, it is detected whether all the light sensors in the photosensitive areas on the third side and the fourth side of the display panel are blocked; if at least some of the light sensors in the photosensitive areas on the third side and the fourth side of the display panel are not blocked, it is determined that the display panel is in a state of accidental touch, and the brightness of the display panel is kept unchanged; wherein, the third side and the fourth side of the display panel are respectively the upper and lower sides when the display panel is in the landscape mode. When in some unexpected situations, the user holds both sides of the display panel in the landscape mode with both hands without operating the display panel, at this time both sides of the display panel are blocked, but at this time there is no need to adjust the light. At this time, the upper and lower sides of the display panel in the landscape mode can be further identified to determine whether the entire display panel is in a blocked state. This embodiment further considers the problem of accidental touch caused by unexpected situations and improves the user experience.

[0065] Of course, in other embodiments, it is also possible to determine whether it is in a state of accidental touch through other detections, which will not be exemplified one by one here.

[0066] It should be noted that the limitations of each step involved in this solution do not, on the premise of not affecting the implementation of the specific solution, be considered as a limitation on the order of the steps. The steps written in the front can be executed first, or can be executed later, or even can be executed simultaneously. The solutions of different embodiments can be combined and applied without conflict as long as the solution can be implemented, and all should be regarded as falling within the protection scope of this application.

[0067] The above content is a further detailed description of this application in combination with specific optional implementation manners, and it cannot be determined that the specific implementation of this application is only limited to these descriptions. For those of ordinary skill in the technical field to which this application belongs, without departing from the concept of this application, several simple deductions or substitutions can still be made, and all should be regarded as falling within the protection scope of this 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 provided in each of the photosensitive areas. The display panel includes: A pattern recognition module for recognizing the display pattern 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. When the display panel enters the landscape mode, if some of the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked simultaneously, it is determined that the display panel is in a mis-touch state and a mis-touch signal is sent out; and A dimming module for adjusting the brightness of the display panel. The dimming module is connected to the determination module. When receiving the mis-touch signal, the dimming module keeps the brightness of the display panel unchanged; Wherein, the first side and the second side of the display panel are respectively the left and right sides when the display panel is in the landscape mode; The display panel includes a plurality of signal lines arranged in parallel. Each signal line passes through a plurality of the photosensitive areas and connects a plurality of the light sensors in series. 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 landscape 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 mis-touch state.

2. The display panel according to claim 1, wherein The display panel includes a plurality of data lines and a plurality of scan lines that intersect vertically and horizontally. The plurality of data lines and the plurality of scan lines divide the display panel into a plurality of pixels distributed in an array. The display panel further includes an active switch for driving the pixels; The light sensor is a thin film transistor, and the light sensor is formed in the same process as the active switch; 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 switch in the same row are connected to the same scan line, and the types of the light sensors and the active switches are different.

3. The display panel according to claim 2, characterized in that, The scan line connected to the light sensor outputs a scan signal during the scan stage of each frame and outputs a sensing signal in adjacent frames. The scan signal is used to turn on the corresponding active switch, and the sensing signal is used to turn on the corresponding light sensor. The scan line not connected to the light sensor only outputs a scan signal.

4. The display panel according to claim 1, wherein Each signal line is divided into a sensing part and a routing part connected in series. All the light 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.

5. The display panel according to claim 1, characterized in that, Each signal line is divided into a sensing part and a routing part connected in series. All the light 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.

6. A method for controlling the brightness of a display panel, which is used to control the brightness of the display panel according to any one of claims 1-5, characterized in that, The brightness control method includes the steps of: obtaining the display mode of the display panel; when it is detected that the display panel is in the landscape mode, simultaneously detecting whether the light sensors in the photosensitive areas on the first side and the second side of the display panel are blocked; and when it is detected that the light sensors in some of the photosensitive areas on the first side and the second side of the display panel are blocked at the same time, determining that the display panel is in a mis-touch state and keeping the brightness of the display panel unchanged.

7. The brightness control method of the display panel according to claim 6, characterized in that, Define the photosensitive areas at both ends of the first side of the display panel as the first photosensitive area and the second photosensitive area respectively, and define the photosensitive areas at both ends of the second side of the display panel as the third photosensitive area and the 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 at least one light sensor is provided in each sub-photosensitive area; In the step of determining that the display panel is in a mis-touch state and keeping the brightness of the display panel unchanged when it is detected that the light sensors in some of the photosensitive areas on the first side and the second side of the display panel are blocked at the same time, when the light sensors in some of the sub-photosensitive areas in the first photosensitive area or the second photosensitive area are blocked, and at the same time the light sensors in some of 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 mis-touch state and the brightness of the display panel is kept unchanged.

8. The brightness control method of a display panel according to claim 6, characterized in that, When it is detected that the light sensors in all the photosensitive areas on the first side and the second side of the display panel are blocked, detect whether the light sensors in the photosensitive areas on the third side and the fourth side of the display panel are blocked; If the light sensors in at least some of the photosensitive areas on the third side and the fourth side of the display panel are not blocked, determine that the display panel is in a mis-touch state and keep the brightness of the display panel unchanged; Among them, the third side and the fourth side of the display panel are the upper and lower sides of the display panel when it is in the landscape mode respectively.

9. A display device, characterized in that, It includes a driving circuit and a display panel according to any one of claims 1-5, and the driving circuit is used to drive the display panel.

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