Display panel, display and backlight adjusting method thereof

Abstract

The invention discloses a display panel, a display and a backlight adjusting method thereof. The display panel comprises a display area, a peripheral area, N ambient light sensors and a control module, the peripheral area is arranged on the outer side of the display area; the N ambient light sensors are arranged in the peripheral area at intervals, and the N ambient light sensors are used for outputting N ambient light signals; the control module is electrically connected with the N ambient light sensors and receives ambient light signals, when the M ambient light signals all change in the same direction, the control module outputs backlight control signals, and the backlight control signals are used for controlling backlight brightness to change synchronously; wherein 0.5 N < M < = N, N > = 3, and both M and N are positive integers. The display panel is low in false triggering possibility.

Description

Technical Field

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

[0002] The backlight brightness of current displays is fixed and will not automatically adjust according to the environment. When the environment is dark, the high brightness can easily hurt the eyes and waste electricity. To address the above problems, the backlight adjustment of existing display panels is to make a TFT on the display panel as a photosensitive sensor. Since the TFT will have a slight current change under different light intensities, the backlight can be adjusted by detecting the slight current change. Since the TFT photosensitive sensor is distributed in the non-display area and there is only one, it is easy to be blocked by mistake, thereby misadjusting the backlight brightness and causing false triggering. Summary of the invention

[0003] The purpose of the present application is to provide a display panel, a display and a backlight adjustment method thereof, so as to solve the problem that the display is easily mistriggered when adjusting the backlight brightness.

[0004] To achieve the purpose of this application, this application provides the following technical solutions:

[0005] In a first aspect, the present invention provides a display panel, comprising:

[0006] Display area;

[0007] A peripheral area, arranged outside the display area;

[0008] N ambient light sensors are arranged at intervals in the peripheral area, and the N ambient light sensors are used to output N ambient light signals;

[0009] A control module is electrically connected to the N ambient light sensors and receives the ambient light signals. When the M ambient light signals all change in the same direction, the control module outputs a backlight control signal, and the backlight control signal is used to control the synchronous change of the backlight brightness; wherein, 0.5N<M≤N, N≥3, and M and N are both positive integers.

[0010] In one embodiment, the control module includes a conversion unit and a backlight control unit, the conversion unit is used to convert the ambient light signal into a digital signal, and the backlight control unit is used to receive the digital signal and convert it into the backlight control signal.

[0011] In one embodiment, the conversion unit includes a current-voltage conversion circuit, an amplifying circuit and a digital-to-analog converter. The current-voltage conversion circuit is electrically connected to the ambient light sensor. The current-voltage conversion circuit is used to receive the ambient light signal and output a corresponding first voltage. The amplifying circuit is used to amplify the first voltage to a second voltage. The digital-to-analog converter is used to convert the second voltage into the digital signal.

[0012] In one embodiment, X of the N ambient light sensors are connected in parallel, and the X ambient light sensors connected in parallel form a first output module, the first output module is electrically connected to the control module, and the first output module is used to output a first signal, which is a weighted signal of the X ambient light signals, wherein 2≤X<N and X is a positive integer.

[0013] In one embodiment, the peripheral area includes a first area and a second area, the first area and the second area are arranged on different sides of the display area, and the first area and the second area are both provided with the ambient light sensor.

[0014] In a second aspect, the present invention provides a display, comprising a backlight module and a display panel described in any one of various embodiments of the first aspect, wherein the display panel is arranged on the light emitting side of the backlight module, and the control module controls the brightness change of the backlight module.

[0015] In a third aspect, the present invention provides a backlight adjustment method for a display, comprising:

[0016] Provide a display, wherein the display is the display described in any one of the various embodiments of the second aspect;

[0017] The control module receives N ambient light signals output by N ambient light sensors;

[0018] When the M ambient light signals all change in the same direction, the control module outputs a backlight control signal to make the brightness of the backlight module change synchronously, wherein 0.5N<M≤N, N≥3, and M and N are both positive integers.

[0019] In one implementation, N ambient light sensors input N ambient light signals to the control module, including:

[0020] Providing a first output module, the first output module comprising X ambient light sensors connected in parallel, wherein 2≤X<N and X is a positive integer;

[0021] The first output module outputs a first signal to the control module, wherein the first signal is a weighted signal of the X ambient light signals.

[0022] In one implementation, when the M ambient light signals all change in the same direction, the control module outputs a backlight control signal, including:

[0023] The control module receives the ambient light signal and compares it with a corresponding relationship table of ambient light signal H-brightness L, wherein the size of the ambient light signal in the ambient light signal H-brightness L table corresponds to the level of the backlight brightness;

[0024] According to the ambient light signal H-brightness L table, the control module outputs the corresponding backlight control signal.

[0025] In one embodiment, the control module receives the ambient light signal and compares the ambient light signal H-brightness L correspondence table, including:

[0026] When the ambient light signal increases to H(a+1)+u, the backlight brightness increases to L(a+1);

[0027] When the ambient light signal of the ambient light output is reduced to H(a+1)-u, the backlight brightness is reduced to level La, wherein H(a)+u<H(a+1)-u, a≤N-1 and a is a positive integer.

[0028] The display panel of the present invention is provided with N ambient light sensors, and the ambient light signal output by the ambient light sensor changes accordingly according to the change of the brightness of the ambient light. When the M ambient light signals all change in the same direction, that is, M (0.5N≤M≤N, corresponding to most ambient light sensors) ambient light signals increase or decrease at the same time, the control module determines that the overall ambient brightness is reduced, and it is not caused by accidental obstruction, and then it outputs the backlight control signal to control the synchronous change of the backlight brightness, thereby avoiding false triggering and reducing the possibility of false triggering of the display panel of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 is a schematic diagram of a display panel of an embodiment;

[0031] Figure 2 is a schematic diagram of a display panel of another embodiment;

[0032] Figure 3 is a schematic diagram of a display panel of yet another embodiment;

[0033] Figure 4 is a flow chart of a backlight adjustment method for a display according to an embodiment;

[0034] Figure 5 is a schematic diagram of one step of a backlight adjustment method for a display according to an embodiment;

[0035] Figure 6 The present invention is a flow chart of another step of a method for adjusting backlight of a display according to an embodiment.

[0036] Figure 7 The present invention is a schematic diagram of another step of a method for adjusting the backlight of a display according to an embodiment.

[0037] Description of reference numerals:

[0038] 100 - display panel, 10 - display area, 20 - peripheral area, 21 - first area, 22 - second area, 23 - third area, 24 - fourth area, 30 - ambient light sensor, 31 - first output module, 32 - second output module, 33 - third output module, 34 - fourth output module, 40 - control module. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0042] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0043] For reference Figure 1 , Figure 2 and Figure 3 The present invention provides a display panel 100, including a display area 10, a peripheral area 20, N ambient light sensors 30 and a control module 40; the peripheral area 20 is arranged outside the display area 10; the N ambient light sensors 30 are arranged at intervals in the peripheral area 20, and the N ambient light sensors 30 are used to output N ambient light signals; the control module 40 is electrically connected to the N ambient light sensors 30 and receives the ambient light signals, and when the M ambient light signals all change in the same direction, the control module 40 outputs a backlight control signal, and the backlight control signal is used to control the synchronous change of the backlight brightness; wherein, 0.5N<M≤N, N≥3, and M and N are both positive integers.

[0044] The display area 10 is an area that the user can directly touch or view, and is also the core part of the device for interaction with the user. In the display area 10, the user can perform various gestures and operations, such as clicking, sliding, dragging, etc., to interact with the display panel 100. The display area 10 includes a liquid crystal layer, a polarizer, a color filter, a transparent electrode, and a conductive layer. The liquid crystal layer contains a large number of liquid crystal molecules. The polarizer is used to control the direction of light passing through. The color filter is used to achieve the color display effect of the display. The transparent electrode and the conductive layer are used to apply an electric field on both sides of the liquid crystal layer to control the arrangement of the liquid crystal molecules.

[0045] The peripheral area 20 is not included in the range that the user can directly touch or view, and does not directly participate in the user's interactive operation. Specifically, in the display panel 100, the peripheral area 20 may include a frame area, a black border, a structural part that fixes and supports the screen, a part for encapsulating and protecting the display screen, etc., without limitation. The material of the peripheral area 20 generally includes a glass substrate, a frame material, etc., and mainly plays a supporting and protective role.

[0046] Optionally, the display area 10 is rectangular, and the peripheral area 20 is disposed on at least one side of the display area 10. Specifically, the peripheral area 20 surrounds the display area 10, or the peripheral area 20 is disposed on two adjacent sides or two interval sides of the display area 10, without limitation.

[0047] The ambient light sensor 30 can be a thin film transistor (TFT), a charge coupled device (CCD), a complementary metal oxide semiconductor (CMOS), etc., without limitation. The ambient light sensor 30 will have a slight current change or voltage change under different light intensities, so whether the ambient light changes is determined by detecting the electrical signal output by the ambient light sensor 30.

[0048] The control module 40 is used to receive the ambient light signal, determine whether most of the ambient light signals change in the same direction, and then select whether to output a backlight control signal to control the backlight brightness change. The display panel 100 also includes a circuit board, and the control module 40 is arranged on the circuit board, and the circuit board is arranged corresponding to the display area 10.

[0049] Optionally, N is 3, 8, 10, 25, 20, 24, etc., without limitation. When N < 3, the number of ambient light sensors 30 is too small, and false triggering is prone to occur. When 0.5N < M ≤ N, the ambient light signals output by more than half of the ambient light sensors 30 increase or decrease, confirming that the brightness of the environment in which the display panel 100 is located decreases, and is not caused by accidental obstructions. If the changes in multiple ambient light signals are not synchronized, that is, the ambient light signals output by some ambient light sensors 30 decrease, and the ambient light signals output by other ambient light sensors 30 increase, the control module does not change the backlight brightness.

[0050] The display panel 100 of the present invention is provided with N ambient light sensors 30. The ambient light signal output by the ambient light sensor 30 changes accordingly according to the change in the brightness of the ambient light. When the M ambient light signals all change in the same direction, that is, M (0.5N<M≤N, corresponding to most of the ambient light sensors 30) ambient light signals increase or decrease at the same time, the control module 40 determines that the overall ambient brightness is reduced, and it is not caused by accidental obstruction, so it outputs the backlight control signal to control the synchronous change of the backlight brightness, thereby avoiding false triggering and reducing the possibility of false triggering of the display panel 100 of the present invention.

[0051] In one implementation, the control module 40 includes a conversion unit and a backlight control unit. The conversion unit is used to convert the ambient light signal into a digital signal, and the backlight control unit is used to receive the digital signal and convert it into a backlight control signal.

[0052] The ambient light signal received by the conversion unit may be a current signal, a voltage signal, etc., without limitation.

[0053] Optionally, there is a one-to-one correspondence between the number of conversion units and the number of ambient light sensors 30 , a one-to-one correspondence between the conversion units and the backlight control units, or a plurality of conversion units correspond to one backlight control unit.

[0054] The backlight control unit includes a data processor, which can be a chip. Specifically, the data processor is a timing controller (TCON). TCON reads the data converted by the conversion unit through an interface. After TCON processes the data, it looks up the table to determine the intensity of the current ambient light. After the determination, TCON controls its general-purpose input and output (GPIO) to output the corresponding backlight control signal to the backlight module to achieve the backlight changing with the change of ambient light. The backlight control signal can be a PWM wave corresponding to the duty cycle. The PWM wave is a rectangular pulse wave with continuously adjustable pulse width. It simulates different average voltages or power levels by adjusting the pulse width (i.e., duty cycle, describing the ratio of pulse width to pulse period).

[0055] Such an arrangement enables the control module 40 to receive ambient light signals and determine whether multiple ambient light signals change synchronously, and output corresponding backlight control signals, so that the display panel 100 automatically adjusts the backlight brightness according to the change of ambient light.

[0056] In one embodiment, the conversion unit includes a current-voltage conversion circuit, an amplifying circuit and a digital-to-analog converter. The current-voltage conversion circuit is electrically connected to the ambient light sensor 30. The current-voltage conversion circuit is used to receive the ambient light signal and output a corresponding first voltage. The amplifying circuit is used to amplify the first voltage to a second voltage. The digital-to-analog converter is used to convert the second voltage into a digital signal.

[0057] Correspondingly, the ambient light sensor 30 is a TFT, and the output ambient light signal is a current signal.

[0058] With this arrangement, the weak current changes caused by the different intensities of ambient light received by the TFT are converted into voltage through the current-to-voltage conversion circuit, and then the voltage is amplified to the required voltage value. The voltage value is then sent to the digital-to-analog converter to convert the voltage value into a corresponding digital signal, making it easier for the backlight control unit to receive and process the corresponding information.

[0059] In one implementation, the ambient light signal received by the conversion unit is a voltage signal, and the corresponding signal that the conversion unit needs to amplify is a voltage signal. The conversion unit only needs to include an amplification circuit and a digital-to-analog converter.

[0060] For reference Figure 3 In one embodiment, X ambient light sensors 30 out of N ambient light sensors 30 are connected in parallel, and the X ambient light sensors 30 connected in parallel form a first output module 31. The first output module 31 is electrically connected to the control module 40. The first output module 31 is used to output a first signal, which is a weighted signal of the X ambient light signals, wherein 2≤X<N and X is a positive integer.

[0061] Optionally, the first signal output by the first output module 31 may be a weighted signal or a signal before weighting. Specifically, the ambient light signal output by the ambient light sensor 30 is a current signal, and the first signal output after X ambient light sensors 30 are connected in parallel may be the average value of the X ambient light signals. The weighted processing may be completed before the ambient light signal is input to the conversion unit, or the conversion unit may complete the weighted processing of the ambient light signal. With such a configuration, the number of control modules 40 may be reduced, and the area occupied by the control module 40 on the circuit board may also be reduced, thereby reducing the production cost of the display panel 100.

[0062] For reference Figure 2 and Figure 3 In one embodiment, the peripheral area 20 includes a first area 21 and a second area 22 , the first area 21 and the second area 22 are arranged on different sides of the display area 10 , and both the first area 21 and the second area 22 are provided with an ambient light sensor 30 .

[0063] Optionally, the first area 21 and the second area 22 may be disposed adjacent to each other or opposite to each other, without limitation.

[0064] At least one ambient light sensor 30 is disposed in the first area 21 and the second area 22 .

[0065] The ambient light sensors 30 in the first zone 21 may be connected in parallel or independently arranged, and the ambient light sensors 30 in the first zone 21 may be connected in parallel or independently arranged with the ambient light sensors 30 in the second zone 22 .

[0066] In a specific implementation, the peripheral area 20 further includes a third area 23 and a fourth area 24, and the first area 21, the second area 22, the third area 23 and the fourth area 24 are sequentially connected to surround the display area 10. At least one ambient light sensor 30 is disposed in each of the first area 21, the second area 22, the third area 23 and the fourth area 24, and the ambient light sensors 30 in each area are connected in parallel to form a corresponding output module. In this implementation, four output modules are formed, and four corresponding control modules 40 are also formed.

[0067] The number of ambient light sensors 30 in the first area 21 and / or the second area 22 and / or the third area 23 and / or the fourth area 24 may be the same or different, and is not limited.

[0068] In one embodiment, the ambient light sensors 30 in any two areas between the first area 21, the second area 22, the third area 23 and the fourth area 24 can be connected in parallel and output an ambient light signal, and the ambient light sensors 30 in the other two areas can be connected in parallel and output another ambient light signal. At this time, the two ambient light signals both increase or decrease, and the control module 40 will send a backlight control signal to change the backlight brightness of the display.

[0069] Optionally, the N ambient light sensors 30 are evenly spaced on the peripheral area 20, and the N ambient light sensors 30 are evenly divided into b parts, where b≥2. Then each part has N / b ambient light sensors 30, where N / b is a positive integer. When the brightnesses corresponding to the ambient light signals output by the ambient light sensors 30 in c parts all decrease, where 1<c≤b, the control module 40 outputs a backlight control signal.

[0070] Optionally, the N ambient light sensors 30 are evenly spaced over all areas of the peripheral area 20, or the N ambient light sensors 30 are evenly spaced on the first area 21 and / or the second area 22 and / or the third area 23 and / or the fourth area 24.

[0071] With such an arrangement, the ambient light sensors 30 are arranged on different sides of the display area 10, reducing the false touch phenomenon caused by the ambient light sensors 30 being only arranged on one side of the display area 10.

[0072] The present invention provides a display, including a backlight module and the display panel 100 described in any one of the foregoing various embodiments. The display panel 100 is arranged on the light-emitting side of the backlight module, and the control module 40 controls the brightness change of the backlight module.

[0073] The backlight module is an important component of the display, providing the backlight source required for display. The backlight module generally consists of structures such as a light source, a light guide plate, a reflector, a diffusion sheet, and a prism sheet. The backlight module illuminates the liquid crystal layer with evenly distributed light, enabling the image to be clearly visible on the screen. The light source can be a light-emitting diode (LED), including white light LEDs and RGB LEDs, etc. The light guide plate converts the light emitted by a point light source (such as an LED) into a surface light source and evenly distributes it in the display area 10. The light guide plate is usually made of a transparent plastic material and has a specific optical structure, such as dots, prisms, etc., to optimize the propagation and distribution of light. The reflector is located below the light guide plate and is used to reflect the light not absorbed by the light guide plate back to the light guide plate, improving the light utilization rate and the uniformity of the backlight. The reflector is usually made of a material with a high reflectivity, such as a silver or white PET film. The diffusion sheet is located above the light guide plate and is used to further homogenize the light, eliminating the uneven bright and dark phenomenon that may occur on the surface of the light guide plate. The diffusion sheet usually consists of multiple layers of thin films and realizes the uniform distribution of light by changing the propagation direction of light. The prism sheet is used to improve the brightness and contrast of the backlight. It changes the propagation direction of light, enabling more light to be perpendicularly incident on the liquid crystal layer, thereby improving the brightness performance of the display panel 100. The prism sheet usually consists of multiple layers of microstructured thin films, and these microstructures can precisely control the propagation path of light.

[0074] Optionally, the display further comprises a housing, which is suitable for providing physical protection and support for the display panel 100 and the backlight module, while protecting the internal components from dust, moisture and other external factors.

[0075] Specifically, the display panel 100 and the display may be of liquid crystal type.

[0076] The display of the present invention is provided with N ambient light sensors 30, and the ambient light signal output by the ambient light sensor 30 changes accordingly according to the change in the brightness of the ambient light. When the M ambient light signals all change in the same direction, that is, when the M (0.5N<M≤N, corresponding to most of the ambient light sensors 30) ambient light signals increase or decrease at the same time, the control module 40 determines that the overall ambient brightness is reduced, and it is not caused by accidental obstructions, and then outputs a backlight control signal to control the synchronous change of the backlight brightness, thereby avoiding false triggering and reducing the possibility of false triggering of the display of the present invention. The display of the present invention can change the backlight brightness according to the ambient light, and can also effectively reduce the possibility of backlight brightness changes caused by false touches.

[0077] For reference Figure 4 The present invention provides a backlight adjustment method for a display, comprising:

[0078] Step S10: providing a display, wherein the display is any one of the displays described in the above-mentioned various embodiments.

[0079] In step S20 , the control module 40 receives N ambient light signals output by the N ambient light sensors 30 .

[0080] Step S30, when the M ambient light signals all change in the same direction, the control module 40 outputs a backlight control signal to make the brightness of the backlight module change synchronously, wherein 0.5N<M≤N, N≥3, and M and N are both positive integers.

[0081] With such arrangement, when the ambient light signals emitted by most of the ambient light sensors 30 of the display of the present invention increase or decrease simultaneously, the control module 40 controls the backlight module to change the backlight brightness following the ambient light, thereby effectively reducing the possibility of backlight brightness changes caused by false touches.

[0082] For reference Figure 5 In one implementation, step S20 includes:

[0083] Step S21 : providing a first output module 31 , wherein the first output module 31 comprises X ambient light sensors 30 connected in parallel, wherein 2≤X<N and X is a positive integer.

[0084] In step S22, the first output module 31 outputs a first signal to the control module 40, wherein the first signal is a weighted signal of the X ambient light signals.

[0085] Optionally, step S21 also includes providing a second output module 32, a third output module 33 and a fourth output module 34, the second output module 32 includes B parallel ambient light sensors 30, the third output module 33 includes C parallel ambient light sensors 30, the fourth output module 34 includes D parallel ambient light sensors 30, the first output module 31 is arranged in the first area 21, the second output module 32 is arranged in the second area 22, the third output module 33 is arranged in the third area 23, the fourth output module 34 is arranged in the fourth area 24, and X+B+C+D=N, X, B, C, D are all positive integers, and any two of X, B, C, D may be equal or unequal without limitation.

[0086] Step S22 also includes: the second output module 32 outputs a second signal to the control module 40, the second output module 32 outputs a second signal to the control module 40, the third output module 33 outputs a third signal to the control module 40, and the fourth output module 34 outputs a fourth signal to the control module 40, wherein the first signal, the second signal, the third signal and the fourth signal are weighted signals, and the weighted processing can specifically be the average value of X ambient light signals, the average value of B ambient light signals, the average value of C ambient light signals, and the average value of D ambient light signals.

[0087] Such a configuration enables the control module 40 to analyze N ambient light signals to determine whether the overall ambient brightness has changed, thereby reducing the possibility of false touches. At the same time, the parallel ambient light sensor 30 reduces the usage of the control module 40. The control module 40 occupies a small area of ​​the circuit board, which is beneficial to the optimization of the display panel 100 and the display structure.

[0088] For reference Figure 6 In one implementation, step S30 includes:

[0089] Step S31, the control module 40 receives the ambient light signal and compares it with the ambient light signal H-brightness L correspondence table, in which the size of the ambient light signal and the backlight brightness correspond one to one;

[0090] Step S32 , according to the ambient light signal H-brightness L table, the control module 40 outputs a corresponding backlight control signal.

[0091] Such an arrangement enables the control module 40 to quickly identify the brightness level corresponding to the ambient light signal, thereby outputting the corresponding backlight control signal to the backlight control module, so that the backlight brightness of the display can be adjusted quickly when the ambient light brightness changes, providing a good user experience.

[0092] For reference Figure 7 In one implementation, step S31 includes:

[0093] Step S311: When the ambient light signal increases to H(a + 1)+u, the backlight brightness increases to level L(a + 1).

[0094] Step S322: When the ambient light signal output by the ambient light decreases to H(a + 1)-u, the backlight brightness decreases to level La, where H(a)+u<H(a + 1)-u, a≤N - 1 and a is a positive integer.

[0095] When the ambient light signal is at H(a)<H<H(a + 1), the brightness L is at level La. However, if the current fluctuates around H(a), it may cause the control of the backlight to jump between the brightness levels of L(a - 1) and La, resulting in display flicker. To avoid this situation, u is introduced as a hysteresis signal.

[0096] In step S311, when the ambient light signal increases to H(a + 1)+u, it is only then considered that the brightness L at this time is the stable level L(a + 1). Similarly, in step S312, when the ambient light signal decreases to H(a + 1)-u, it is only then considered that the brightness L at this time is the stable level La. Here, u can be obtained through monitoring or set by the user, without limitation.

[0097] Optionally, step S31 further includes setting the hysteresis signal u. The hysteresis signal u can be obtained through monitoring. The hysteresis signal u is determined by the fluctuation magnitude of the electrical signal output by the ambient light sensor 30 when the environment stabilizes at a certain fixed brightness, and H(a)+u<H(a + 1)-u. In a specific implementation, for every 10 mA increase in the ambient light signal, the corresponding brightness L level increases by 1, that is, when the ambient light signals are 10 mA, 20 mA, 30 mA, 40 mA, 50 mA, 60 mA, the corresponding brightness L levels are L1, L2, L3, L4, L5, L6 in sequence, and the corresponding magnitude of the hysteresis signal u is 2 mA. Specifically, when the ambient light signal needs to increase to 22 mA, the brightness L is correspondingly adjusted to the second level, and when the ambient light signal needs to decrease to 18 mA, the brightness L is correspondingly adjusted to level L1.

[0098] With such a setting, the flicker of the display panel 100 caused by electrical signal fluctuations can be reduced, and the repeated adjustment of the backlight module leading to a reduction in the service life of the backlight module can be avoided.

[0099] The technical solution of the present application will be described in detail below through specific embodiments.

[0100] In Embodiments 1 to 4, the peripheral area 20 surrounds the display area 10. The peripheral area 20 includes a first area 21, a second area 22, a third area 23, and a fourth area 24. Any two of the first area 21, the second area 22, the third area 23, and the fourth area 24 are disposed on different sides of the peripheral area 20.

[0101] Example 1

[0102] N ambient light sensors 30 are disposed at intervals in the first area 21 , and each ambient light sensor 30 is correspondingly provided with a conversion unit.

[0103] In Example 1, at least M ambient light sensors 30 need to output M ambient light signals that change in the same direction and the corresponding brightness L level in the ambient light signal H-brightness L table changes, and the control module 40 determines that it is not a false trigger, and then sends a backlight control signal to adjust the backlight brightness of the backlight module. Among them, 0.5N<M≤N, N≥3, and M and N are both positive integers.

[0104] Example 2

[0105] X ambient light sensors 30 are arranged at intervals in the first area 21 , B ambient light sensors 30 are arranged at intervals in the second area 22 , C ambient light sensors 30 are arranged at intervals in the third area 23 , and D ambient light sensors 30 are arranged at intervals in the fourth area 24 . Each ambient light sensor 30 is correspondingly provided with a conversion unit.

[0106] In Example 2, at least M ambient light signals output by the ambient light sensors 30 change in the same direction and the corresponding brightness L level in the ambient light signal H-brightness L table changes, and the control module 40 determines that it is not a false trigger, and then sends a backlight control signal to adjust the backlight brightness of the backlight module. Among them, 0.5N<M≤N, N≥3, and M and N are both positive integers.

[0107] Example 3

[0108] X ambient light sensors 30 are arranged at intervals in the first area 21 and connected in parallel to form a first output module 31, B ambient light sensors 30 are arranged at intervals in the second area 22 and connected in parallel to form a second output module 32, C ambient light sensors 30 are arranged at intervals in the third area 23 and connected in parallel to form a third output module 33, and D ambient light sensors 30 are arranged at intervals in the fourth area 24 and connected in parallel to form a fourth output module 34. Each output module is correspondingly provided with a conversion unit, that is, four conversion units need to be provided in Example 3.

[0109] In Example 3, at least three of the four ambient light signals output by the first output module 31, the second output module 32, the third output module 33 and the fourth output module 34 change in the same direction and the corresponding brightness L level in the ambient light signal H-brightness L table changes, and the control module 40 determines that it is not a false trigger, and then sends a backlight control signal to adjust the backlight brightness of the backlight module. Wherein, X+B+C+D=N, X, B, C, D are all positive integers.

[0110] Example 4

[0111] X ambient light sensors 30 are arranged at intervals in the first area 21, B ambient light sensors 30 are arranged at intervals in the second area 22, and (X+B) ambient light sensors 30 are connected in parallel to form a fifth output module; C ambient light sensors 30 are arranged at intervals in the third area 23, D ambient light sensors 30 are arranged at intervals in the fourth area 24, and (C+D) ambient light sensors 30 are connected in parallel to form a sixth output module, and each output module is correspondingly provided with a conversion unit, that is, embodiment 4 needs to provide 2 conversion units.

[0112] In Example 4, the two ambient light signals output by the fifth output module and the sixth output module need to change in the same direction and the corresponding brightness L level in the ambient light signal H-brightness L table changes. The control module 40 determines that it is not a false trigger, and then sends a backlight control signal to adjust the backlight brightness of the backlight module. Wherein, X+B+C+D=N, X, B, C, and D are all positive integers.

[0113] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0114] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A display panel, characterized in that: include: Display area; A peripheral area, arranged outside the display area; N ambient light sensors are arranged at intervals in the peripheral area, and the N ambient light sensors are used to output N ambient light signals; A control module is electrically connected to the N ambient light sensors and receives the ambient light signals. When the M ambient light signals all change in the same direction, the control module outputs a backlight control signal, and the backlight control signal is used to control the synchronous change of the backlight brightness; wherein, 0.5N<M≤N, N≥3, and M and N are both positive integers.

2. The display panel according to claim 1, characterized in that: The control module includes a conversion unit and a backlight control unit. The conversion unit is used to convert the ambient light signal into a digital signal. The backlight control unit is used to receive the digital signal and convert it into the backlight control signal.

3. The display panel according to claim 2, characterized in that: The conversion unit includes a current-to-voltage conversion circuit, an amplifying circuit and a digital-to-analog converter. The current-to-voltage conversion circuit is electrically connected to the ambient light sensor. The current-to-voltage conversion circuit is used to receive the ambient light signal and output a corresponding first voltage. The amplifying circuit is used to amplify the first voltage to a second voltage. The digital-to-analog converter is used to convert the second voltage into the digital signal.

4. The display panel according to claim 1, characterized in that: X of the N ambient light sensors are connected in parallel, and the X ambient light sensors connected in parallel form a first output module, the first output module is electrically connected to the control module, and the first output module is used to output a first signal, which is a weighted signal of the X ambient light signals, wherein 2≤X<N and X is a positive integer.

5. The display panel according to claim 1, characterized in that: The peripheral area includes a first area and a second area, the first area and the second area are arranged on different sides of the display area, and the first area and the second area are both provided with the ambient light sensor.

6. A display, characterized in that: It comprises a backlight module and a display panel as claimed in any one of claims 1 to 5, wherein the display panel is arranged on the light-emitting side of the backlight module, and the control module controls the brightness change of the backlight module.

7. A method for adjusting the backlight of a display, characterized in that: include: Providing a display, wherein the display is the display according to claim 6; The control module receives N ambient light signals output by N ambient light sensors; When the M ambient light signals all change in the same direction, the control module outputs a backlight control signal to make the brightness of the backlight module change synchronously, wherein 0.5N<M≤N, N≥3, and M and N are both positive integers.

8. The display backlight adjustment method according to claim 7, characterized in that: N ambient light sensors input N ambient light signals to the control module, including: Providing a first output module, the first output module comprising X ambient light sensors connected in parallel, wherein 2≤X<N and X is a positive integer; The first output module outputs a first signal to the control module, wherein the first signal is a weighted signal of the X ambient light signals.

9. The backlight adjustment method of a display according to claim 7, characterized in that: When the M ambient light signals all change in the same direction, the control module outputs a backlight control signal, including: The control module receives the ambient light signal and compares it with a corresponding relationship table of ambient light signal H-brightness L, wherein the size of the ambient light signal in the ambient light signal H-brightness L table corresponds to the level of the backlight brightness; According to the ambient light signal H-brightness L table, the control module outputs the corresponding backlight control signal.

10. The backlight adjustment method of a display according to claim 8, characterized in that: The control module receives the ambient light signal and compares the ambient light signal H-brightness L correspondence table, including: When the ambient light signal increases to H(a+1)+u, the backlight brightness increases to L(a+1); When the ambient light signal of the ambient light output is reduced to H(a+1)-u, the backlight brightness is reduced to level La, wherein H(a)+u<H(a+1)-u, a≤N-1 and a is a positive integer.

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