CN108922478B - Backlight brightness adjusting method and system and display device - Google Patents

Abstract

The present application is applicable to the field of terminal technology, and provides a backlight brightness adjustment method, system, and display device, wherein the method includes: acquiring the photosensitive values of all photosensitive regions of the light sensor; according to the photosensitive values and weights of all the photosensitive regions, Obtain the current ambient brightness; wherein, the current ambient brightness is equal to the sum of the photosensitive brightness of all the photosensitive areas, and the photosensitive brightness of the photosensitive area is equal to the product of the photosensitive value and the weight of the photosensitive area; according to the current the ambient brightness, adjust the backlight brightness of the display. In the embodiment of the present application, the light sensor is divided into different photosensitive areas, and the weight corresponding to the photosensitive value of each photosensitive area is set, and then the current ambient brightness is obtained according to the photosensitive values and weights of all photosensitive areas, and according to the ambient brightness, Adjusting the backlight brightness of the display screen can effectively improve the obtained ambient brightness accuracy, and then precisely adjust the backlight brightness of the display screen.

Description

A backlight brightness adjustment method, system and display device

technical field

The present application belongs to the technical field of terminals, and in particular relates to a backlight brightness adjustment method, system and display device.

Background technique

Existing display devices usually detect ambient brightness through a built-in light sensor, and adaptively adjust the backlight brightness of the display screen according to the ambient brightness, so as to improve the display effect of the display screen and protect the eyes of users.

However, since the amount of light received by the photosensitive elements in different areas of the light sensor is not the same, the ambient brightness detected by the light sensor is not accurate, so that the display device cannot accurately adjust the backlight brightness of the display screen according to the ambient brightness.

SUMMARY OF THE INVENTION

In view of this, embodiments of the present application provide a backlight brightness adjustment method, system, and display device to solve the problem that the amount of light received by the photosensitive elements in different regions of the light sensor in the prior art is not exactly the same, resulting in the light sensor. The detected ambient brightness is inaccurate, so that the display device cannot accurately adjust the backlight brightness of the display screen according to the ambient brightness.

A first aspect of the embodiments of the present application provides a backlight brightness adjustment method, which includes:

Obtain the light-sensing values of all light-sensitive areas of the light sensor;

According to the photosensitive values and weights of all the photosensitive regions, the current ambient brightness is obtained; wherein, the current ambient brightness is equal to the sum of the photosensitive brightness of all the photosensitive regions, and the photosensitive brightness of the photosensitive region is equal to the photosensitive region The product of the light sensitivity value and the weight;

Adjust the backlight brightness of the display screen according to the current ambient brightness.

A second aspect of the embodiments of the present application provides a backlight brightness adjustment system, which includes:

The light-sensing value acquisition module is used to obtain the light-sensing values of all light-sensitive areas of the light sensor;

The first environmental brightness obtaining module is configured to obtain the current environmental brightness according to the light-sensing values and weights of all the light-sensing regions; wherein, the current environmental brightness is equal to the sum of the light-sensing brightness of all the light-sensing regions, and the light-sensing region The photosensitive brightness of the area is equal to the product of the photosensitive value and the weight of the photosensitive area;

An adjustment module, configured to adjust the backlight brightness of the display screen according to the current ambient brightness.

A third aspect of the embodiments of the present application provides a display device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, when the processor executes the computer program Implement the steps of the above method.

A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the foregoing method are implemented.

In the embodiment of the present application, the light sensor is divided into different photosensitive areas, and the weight corresponding to the photosensitive value of each photosensitive area is set, and then the current ambient brightness is obtained according to the photosensitive values and weights of all photosensitive areas, and according to the ambient brightness, Adjusting the backlight brightness of the display screen can effectively improve the obtained ambient brightness accuracy, and then precisely adjust the backlight brightness of the display screen.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present application. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 and 2 are schematic flowcharts of a backlight brightness adjustment method provided in Embodiment 1 of the present application;

3 and 4 are schematic structural diagrams of the light sensor provided in Embodiment 1 of the present application;

5 is a schematic flowchart of a backlight brightness adjustment method according to Embodiment 2 of the present application;

6 is a schematic structural diagram of a backlight brightness adjustment system provided in Embodiment 3 of the present application;

FIG. 7 is a schematic diagram of a display device provided in Embodiment 4 of the present application.

Detailed ways

In the following description, for the purpose of illustration rather than limitation, specific details such as a specific system structure and technology are set forth in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

In order to illustrate the technical solutions described in the present application, the following specific embodiments are used for description.

Example 1

As shown in FIG. 1, this embodiment provides a backlight brightness adjustment method, which can be applied to any display device with a display screen and a light sensor, such as a mobile phone, a tablet computer, a notebook computer, a smart bracelet, a personal digital assistant Or a display with a light sensor, etc. The backlight brightness adjustment method can be specifically executed by the processor of the display device, or executed by any device with a control function that is communicatively connected to the display device, for example, a PC (Personal Computer, personal computer) client or server.

The processor may be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf processor Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. When the display device is a mobile phone, the processor may specifically be a baseband processor.

As shown in FIG. 1 , the backlight brightness adjustment method provided in this embodiment includes:

Step S101, acquiring the light-sensing values of all light-sensing regions of the light sensor.

In a specific application, the light sensor includes a photosensitive element array composed of multiple photosensitive elements. Due to the different placement positions of different photosensitive elements, the amount of light received by the photosensitive elements located in different photosensitive areas on the photosensitive element array will be different. , resulting in different photosensitive values detected in different photosensitive areas.

As shown in FIG. 2, in this embodiment, before step S101, it includes:

Step S201: Divide the light sensor into at least two photosensitive regions in turn from the center to the edge; wherein, the photosensitive region includes a positive integer number of photosensitive elements and the radial width of the photosensitive region is equal to the width of the positive integer number of photosensitive elements ;

Step S202 , setting the weight of each of the photosensitive regions; wherein the weight of the photosensitive regions located in the center is greater than the weight of the photosensitive regions located at the edge, and the weights of the adjacent photosensitive regions are different.

In specific applications, since the light sensor is usually a regular-shaped photosensitive element array composed of a plurality of photosensitive elements, the amount of light received by the photosensitive elements with the same distance from the center of the light sensor is usually the same. The sensor is sequentially divided into at least two photosensitive areas of regular shape from the center to the edge. According to the shape of the photosensitive element array, the light sensor can be adaptively divided into at least two photosensitive regions of corresponding shapes, and the width of each photosensitive region can also be set according to actual needs.

FIG. 3 exemplarily shows a light sensor divided into one square photosensitive area and two square annular photosensitive areas.

FIG. 4 exemplarily shows a light sensor divided into one circular photosensitive area and one annular photosensitive area.

In specific applications, the specific number of photosensitive regions can be set according to actual needs. In order to make the photosensitive value of each photosensitive area calculable, it is necessary to ensure that the number of photosensitive elements included in each photosensitive area is an integer, and the radial width of each photosensitive area is equal to the width of a positive integer number of photosensitive elements.

In specific applications, the amount of light received by the photosensitive element located at the center of the light sensor is usually greater than that received by the photosensitive element located at the edge, and the detected light sensitivity value is more accurate. The weight of the photosensitive area in the center is set to be greater than the weight of the photosensitive area located at the edge, or, the width of the photosensitive area in the center is set larger than the width of the photosensitive area in the edge, the sum of the weights of all photosensitive areas should be equal to 1.

In one embodiment, the weights of the photosensitive regions from the center to the edge of the light sensor decrease sequentially.

In one embodiment, the radial widths of all the photosensitive regions are the same or the widths of the photosensitive regions of the light sensor decrease sequentially from the center to the edge.

Figure 3 exemplarily shows that the widths of each photosensitive area of the light sensor are equal, wherein the weight of one square photosensitive area is 0.5, and the weights of two square ring photosensitive areas are 0.3 and 0.2 in turn.

FIG. 4 exemplarily shows that the widths of each photosensitive area of the light sensor are not equal, wherein the weight of one circular photosensitive area is 0.6, and the weight of another circular photosensitive area is 0.4.

Step S102, obtaining the current ambient brightness according to the photosensitive values and weights of all the photosensitive regions; wherein, the current ambient brightness is equal to the sum of the photosensitive luminances of all the photosensitive regions, and the photosensitive brightness of the photosensitive regions is equal to all the photosensitive regions. The product of the photosensitive value and the weight of the photosensitive area.

In a specific application, the photosensitive values of the n photosensitive regions of the light sensor are set to be A1, A2, ..., An-1 and An in sequence, and the weights of each photosensitive region are B1, B2, ..., Bn-1 and Bn; wherein, n is an integer greater than 1; then the current ambient brightness=A1*B1+A2*B2+...+An-1*Bn-1+An*Bn.

Step S103: Adjust the backlight brightness of the display screen according to the current environment brightness.

In specific applications, the backlight brightness of the display screen is usually positively related to the ambient brightness, that is, the greater the ambient brightness, the greater the backlight brightness. Users can also customize the relationship between the ambient brightness and the backlight brightness according to actual needs. For example, you can Set ambient brightness and backlight brightness to be negatively correlated.

In the embodiment of the present application, the light sensor is divided into different photosensitive areas, and the weight corresponding to the photosensitive value of each photosensitive area is set, and then the current ambient brightness is obtained according to the photosensitive values and weights of all photosensitive areas, and according to the ambient brightness, Adjusting the backlight brightness of the display screen can effectively improve the accuracy of the obtained ambient brightness, and then precisely adjust the backlight brightness of the display screen.

Embodiment 2

As shown in FIG. 5 , in this embodiment, before step S201 in Embodiment 1, it includes:

Step S301, obtaining initial ambient brightness;

Step S302, according to the initial environmental brightness, determine the number of area divisions and the weight of each of the photosensitive areas; wherein, the number of area divisions is negatively correlated with the initial environmental brightness;

Correspondingly, step S201 includes:

The light sensor is sequentially divided into the area from the center to the edge and a number of photosensitive areas are divided.

In a specific application, the number of area divisions of the light sensor can be set by the user, or can be determined according to the initial ambient brightness. photosensitive area), then the sum of the current photosensitive values of all photosensitive elements of the light sensor is used as the initial ambient brightness; if the light sensor has been divided into areas and set weights before (that is, the photosensitive area of the light sensor is not divided for the first time in step S201), Then, the current light-sensing values of all light-sensing regions of the light sensor are acquired, and the current ambient brightness is calculated as the initial ambient brightness according to the last (ie, the one before step S201 ) divided photosensitive regions and the set weights.

In a specific application, by obtaining the initial ambient brightness, the current ambient brightness can be pre-judged before dividing the photosensitive area of the light sensor and setting the weight. Usually, when the ambient brightness is high, the amount of light received by the photosensitive elements in each area of the light sensor is basically the same, and the light sensor detects the ambient brightness with high accuracy. Therefore, the light sensor may not be divided into areas or the number of areas may be divided. Set to a smaller value, and the weights of different photosensitive areas can also be the same or the difference between the weights of different photosensitive areas can be smaller. In the case of low ambient brightness, the amount of light received by the photosensitive light sources in the center and the edge of the light sensor is quite different. The closer to the edge, the less the amount of light received. Divide the photosensitive areas, set the weights of different photosensitive areas to different values, and ensure that the weight of the photosensitive area located in the center is greater than the weight of the photosensitive area located at the edge. Further, you can make the light sensor from the center to the edge. The weights of the photosensitive regions decrease sequentially.

It should be understood that the size of the sequence numbers of the steps in the above embodiments does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Embodiment 3

As shown in FIG. 6 , the present embodiment provides a backlight brightness adjustment system 100 for executing the method steps in FIG. 1 . The system may be a software program system in a display device, and the system includes:

The light-sensing value acquisition module 101 is used for acquiring the light-sensing values of all light-sensing regions of the light sensor;

The first ambient brightness obtaining module 102 is configured to obtain the current ambient brightness according to the photosensitive values and weights of all the photosensitive regions; wherein, the current ambient brightness is equal to the sum of the photosensitive brightnesses of all the photosensitive regions, and the The photosensitive brightness of the photosensitive area is equal to the product of the photosensitive value of the photosensitive area and the weight;

The adjustment module 103 is configured to adjust the backlight brightness of the display screen according to the current ambient brightness.

In one embodiment, the backlight brightness adjustment system further includes a structure for performing the method steps in FIG. 2, which further includes:

an area division module, which is used to divide the light sensor into at least two photosensitive areas in sequence from the center to the edge; wherein, the photosensitive area includes a positive integer number of photosensitive elements and the radial width of the photosensitive area is equal to a positive integer number of photosensitive areas the width of the element;

The weight setting module is configured to set the weight of each of the photosensitive regions; wherein, the weight of the photosensitive regions located in the center is greater than the weight of the photosensitive regions located at the edge, and the weights of the adjacent photosensitive regions are different.

In one embodiment, the backlight backlight brightness adjustment system further includes a structure for performing the method steps in FIG. 5 , which further includes:

a first ambient brightness acquisition module, used for acquiring initial ambient brightness;

a determination module, configured to determine the number of area divisions and the weight of each of the photosensitive areas according to the initial environmental brightness; wherein, the number of area divisions is negatively correlated with the initial environmental brightness;

Correspondingly, the area dividing module is specifically configured to divide the light sensor into a number of photosensitive areas in sequence from the center to the edge.

In the embodiment of the present application, the light sensor is divided into different photosensitive areas, and the weight corresponding to the photosensitive value of each photosensitive area is set, and then the current ambient brightness is obtained according to the photosensitive values and weights of all photosensitive areas, and according to the ambient brightness, Adjusting the backlight brightness of the display screen can effectively improve the accuracy of the obtained ambient brightness, and then precisely adjust the backlight brightness of the display screen.

Embodiment 4

As shown in FIG. 7 , this embodiment provides a display device 200, which includes: a processor 201, a memory 202, and a computer program 203 stored in the memory 202 and executable on the processor 201, such as a backlight Brightness adjustment program. When the processor 201 executes the computer program 203 , the steps in each of the foregoing embodiments of the backlight brightness adjustment method are implemented, for example, steps S101 to S103 shown in FIG. 1 . Alternatively, when the processor 201 executes the computer program 203, the functions of the modules in the foregoing device embodiments are implemented, for example, the functions of the modules 101 to 103 shown in FIG. 6 .

Exemplarily, the computer program 203 may be divided into one or more modules, and the one or more modules are stored in the memory 202 and executed by the processor 201 to complete the present application. The one or more modules may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe the execution process of the computer program 203 in the display device 200 . For example, the computer program 203 can be divided into a photosensitive value acquisition module, a first ambient brightness acquisition module and an adjustment module, and the specific functions of each module are as follows:

The light-sensing value acquisition module is used to obtain the light-sensing values of all light-sensitive areas of the light sensor;

The first environmental brightness obtaining module is configured to obtain the current environmental brightness according to the light-sensing values and weights of all the light-sensing regions; wherein, the current environmental brightness is equal to the sum of the light-sensing brightness of all the light-sensing regions, and the light-sensing region The photosensitive brightness of the area is equal to the product of the photosensitive value and the weight of the photosensitive area;

An adjustment module, configured to adjust the backlight brightness of the display screen according to the current ambient brightness.

The display device 200 may be a computing device such as a desktop computer, a notebook computer, a palmtop computer, and a cloud server. The display device may include, but is not limited to, the processor 201 and the memory 202 . Those skilled in the art can understand that FIG. 7 is only an example of the display device 200, and does not constitute a limitation to the display device 200, and may include more or less components than the one shown, or combine some components, or different components For example, the display device may further include an input and output device, a network access device, a bus, and the like.

The so-called processor 201 may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 202 may be an internal storage unit of the display device 200 , such as a hard disk or a memory of the display device 200 . The memory 202 may also be an external storage device of the display device 200, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), and a Secure Digital (SD) card equipped on the display device 200. , Flash card (Flash Card) and so on. Further, the memory 202 may also include both an internal storage unit of the display device 200 and an external storage device. The memory 202 is used to store the computer program and other programs and data required by the display device. The memory 202 may also be used to temporarily store data that has been output or is to be output.

Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. Module completion, that is, dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated in one processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit, and the above-mentioned integrated units may adopt hardware. It can also be realized in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing from each other, and are not used to limit the protection scope of the present application. For the specific working processes of the units and modules in the above-mentioned system, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the foregoing embodiments, the description of each embodiment has its own emphasis. For parts that are not described or described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed apparatus/display device and method may be implemented in other manners. For example, the apparatus/display device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units. Or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated modules, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the present application can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer When the program is executed by the processor, the steps of the foregoing method embodiments can be implemented. . Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Excluded are electrical carrier signals and telecommunication signals.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that: it is still possible to implement the above-mentioned implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the application, and should be included in the within the scope of protection of this application.

Claims (8)

1. a backlight brightness adjustment method, is characterized in that, comprises: Dividing the light sensor into at least two photosensitive regions from the center to the edge in turn; wherein, the photosensitive region includes a positive integer number of photosensitive elements and the radial width of the photosensitive region is equal to the width of the positive integer number of photosensitive elements; setting the weight of each of the photosensitive regions; wherein, the weight of the photosensitive regions located in the center is greater than the weight of the photosensitive regions located at the edge, and the weights of the adjacent photosensitive regions are different; Acquire the photosensitive values of all photosensitive regions of the light sensor; According to the photosensitive values and weights of all the photosensitive regions, the current ambient brightness is obtained; wherein, the current ambient brightness is equal to the sum of the photosensitive brightness of all the photosensitive regions, and the photosensitive brightness of the photosensitive region is equal to the photosensitive region The product of the light sensitivity value and the weight; Adjust the backlight brightness of the display screen according to the current ambient brightness. 2. The method for adjusting backlight brightness according to claim 1, wherein before dividing the light sensor into at least two photosensitive regions in turn from the center to the edge, the method comprises: Get the initial ambient brightness; Determine the number of area divisions and the weight of each of the photosensitive areas according to the initial ambient brightness; wherein, the number of area divisions is negatively correlated with the initial ambient brightness; Correspondingly, the light sensor is sequentially divided into at least two photosensitive areas from the center to the edge, including: Divide the light sensor into the said area sequentially from the center to the edge to divide a number of photosensitive areas. 3 . The backlight brightness adjustment method according to claim 1 or 2 , wherein the weight of the photosensitive areas of the light sensor decreases sequentially from the center to the edge. 4 . 4 . The backlight brightness adjustment method according to claim 1 , wherein the radial widths of all the photosensitive regions are the same or the widths of the photosensitive regions of the light sensor decrease sequentially from the center to the edge. 5 . 5. A backlight brightness adjustment system, characterized in that, comprising: An area division module is used to sequentially divide the light sensor into at least two photosensitive areas from the center to the edge; wherein, the photosensitive area includes a positive integer number of photosensitive elements and the radial width of the photosensitive area is equal to the width of the positive integer number of photosensitive elements width; a weight setting module, configured to set the weight of each of the photosensitive regions; wherein, the weight of the photosensitive regions located in the center is greater than the weight of the photosensitive regions located at the edge, and the weights of the adjacent photosensitive regions are different; a light-sensing value acquiring module, used for acquiring the light-sensing values of all light-sensing regions of the light sensor; The first environmental brightness obtaining module is configured to obtain the current environmental brightness according to the light-sensing values and weights of all the light-sensing regions; wherein, the current environmental brightness is equal to the sum of the light-sensing brightness of all the light-sensing regions, and the light-sensing region The photosensitive brightness of the area is equal to the product of the photosensitive value and the weight of the photosensitive area; An adjustment module, configured to adjust the backlight brightness of the display screen according to the current ambient brightness. 6. The backlight brightness adjustment system of claim 5, wherein the system further comprises: The second environment brightness obtaining module is used to obtain the initial environment brightness; a determination module, configured to determine the number of area divisions and the weight of each of the photosensitive areas according to the initial environmental brightness; wherein, the number of area divisions is negatively correlated with the initial environmental brightness; Correspondingly, the area dividing module is specifically configured to divide the light sensor into a number of photosensitive areas in sequence from the center to the edge. 7. A display device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the computer program as claimed in the claims Steps of any one of 1 to 4 of the method. 8. A computer-readable storage medium storing a computer program, wherein the computer program implements the steps of the method according to any one of claims 1 to 4 when the computer program is executed by a processor .

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