CN107240384A - display brightness compensation method and device - Google Patents

Abstract

Embodiments of the present invention provide a display brightness compensation method and device, which belong to the field of display technology. The method comprises: obtaining brightness information of a display area image of a display; obtaining a mura compensation value table according to the brightness information; interleaving dividing the mura compensation value table according to different precisions; The table performs brightness compensation on the image in the display area. In this method, the staggered division of the mura compensation value table according to different precisions can effectively improve the brightness compensation effect of the image, thereby eliminating the line feeling caused by the visual accumulation characteristics of the human eye when the compensation value table is evenly divided according to different precisions. .

Description

Display brightness compensation method and device

technical field

The invention relates to the field of display technology, in particular to a display brightness compensation method and device.

Background technique

The word Mura means "spots" and "stains". For displays, it usually refers to the phenomenon of uneven brightness and spots and traces, which will bring unevenness to people's vision. In view of this situation, the method adopted by the manufacturer is basically to use the brightness collector to collect the brightness information, and then use the Demura algorithm to determine the compensation value of the gray scale. If no processing is done on the compensation value, the data volume of the compensation value is very large, so A common practice is to evenly divide the mura compensation data table with different accuracies to reduce the amount of mura compensation data.

However, when setting different precision to evenly divide the mura compensation data table, due to the visual accumulation characteristics of the human eye, the edge information of horizontal or vertical division will be accumulated. When the divided area is larger, the information with edge feeling is stronger. The easier it is for the human eye to see the sense of lines brought by the divided areas.

Contents of the invention

In view of this, the purpose of the embodiments of the present invention is to provide a display brightness compensation method and device to improve the above problems.

In the first aspect, an embodiment of the present invention provides a display brightness compensation method, the method comprising: obtaining brightness information of a display area image of a display; obtaining a mura compensation value table according to the brightness information; and converting the mura compensation value table according to performing interleaved division with different precisions; performing brightness compensation on the display area image according to the mura compensation value table after the interleaved division.

Further, interleaving the mura compensation value table according to different precisions includes: interleaving the mura compensation value table into M*N unit areas, wherein the M*N represents precision, and M represents The length of the divided unit area, N represents the width of the divided unit area.

Further, after the step of interleavedly dividing the mura compensation value table into M*N different unit areas, it also includes: assigning a unified value to each unit area according to each mura compensation value in each of the unit areas.

Further, the step of interleaving dividing the mura compensation value table according to different precisions, and performing brightness compensation on the display area image according to the interleaved mura compensation value table further includes: dividing the The interleaved mura compensation value table is stored in memory.

Further, after the step of performing brightness compensation on the display area image according to the interleavedly divided mura compensation value table, the method further includes: displaying the brightness-compensated display area image on the display.

In a second aspect, an embodiment of the present invention provides a display brightness compensation device, which operates on a display, and the device includes: a brightness information acquisition module, configured to acquire brightness information of an image in a display area of the display; a compensation value acquisition module, configured to obtain brightness information according to The brightness information acquires a mura compensation value table; an interleaved division module is used to interleave divide the mura compensation value table according to different precisions; a brightness compensation module is used to divide the mura compensation value table according to the interleaved division Brightness compensation is performed on the image of the above display area.

Further, the interleaved division module is specifically configured to interleave the mura compensation value table into M*N unit areas, wherein the M*N is expressed as precision, and M indicates the length of the divided unit area , N represents the width of the divided unit area.

Further, the interleaved division module further includes: a unified value assignment module, configured to assign a unified value to each unit area according to each mura compensation value in each of the unit areas.

Further, the device further includes: a storage module, configured to store the interleaved mura compensation value table in a memory.

Further, the device further includes: a display module, configured to display the brightness-compensated image of the display area on the display.

The beneficial effects of the embodiments of the present invention are:

Embodiments of the present invention provide a method and device for brightness compensation of a display. Firstly, the brightness information of the display area image of the display is obtained, and then the mura compensation value table is obtained according to the brightness information, and the mura compensation value table is interleaved according to different precisions. division, and then perform brightness compensation on the display area image according to the mura compensation value table after the staggered division, and this method can effectively improve the brightness compensation effect of the image by interleaving the division of the mura compensation value table according to different precisions, thereby Eliminate the sense of lines caused by the visual accumulation characteristics of the human eye when the compensation value table is evenly divided according to different precisions.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

FIG. 1 shows a structural block diagram of an electronic device applicable to an embodiment of the present application;

FIG. 2 is a flow chart of a display brightness compensation method provided by an embodiment of the present invention;

Fig. 3 is a schematic diagram of a mura compensation value table provided by an embodiment of the present invention divided in a 2*2 staggered manner;

Fig. 4 is a schematic diagram of a mura compensation value table provided by an embodiment of the present invention divided in a 4*4 staggered manner;

FIG. 5 is a schematic diagram of another mura compensation value table provided by an embodiment of the present invention in a 4*4 staggered division;

Fig. 6 is a schematic diagram of decoding a mura compensation value table provided by an embodiment of the present invention in a 2*2 interleaved division;

FIG. 7 is a structural block diagram of a display brightness compensation device provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

Please refer to FIG. 1 , which shows a structural block diagram of an electronic device 100 applicable to an embodiment of the present application. The electronic device 100 can be a display in the implementation of the present invention, and can include a display brightness compensation device, a memory 101, a storage controller 102, a processor 103, a peripheral interface 104, an input and output unit 105, an audio unit 106, and a display unit 107.

The memory 101, storage controller 102, processor 103, peripheral interface 104, input and output unit 105, audio unit 106, and display unit 107 are electrically connected to each other directly or indirectly to realize data transmission or interact. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The display brightness compensation device includes at least one software function module that can be stored in the memory 101 in the form of software or firmware (firmware) or solidified in the operating system (operating system, OS) of the display brightness compensation device. The processor 103 is configured to execute executable modules stored in the memory 101 , such as software function modules or computer programs included in the display brightness compensation device.

Wherein, memory 101 can be, but not limited to, random access memory (Random Access Memory, RAM), read-only memory (Read Only Memory, ROM), programmable read-only memory (Programmable Read-OnlyMemory, PROM), erasable In addition to read-only memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable read-only memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc. Wherein, the memory 101 is used to store the program, and the processor 103 executes the program after receiving the execution instruction, and the method executed by the server of the stream process definition disclosed in any of the above-mentioned embodiments of the present invention can be applied to process In the device 103, or implemented by the processor 103.

The processor 103 may be an integrated circuit chip, which has a signal processing capability. Above-mentioned processor 103 can be general-purpose processor, comprises central processing unit (Central Processing Unit, be called for short CPU), network processor (Network Processor, be called for short NP) etc.; Can also be digital signal processor (DSP), application-specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. The general-purpose processor may be a microprocessor, or the processor 103 may be any conventional processor or the like.

The peripheral interface 104 couples various input/output devices to the processor 103 and the memory 101 . In some embodiments, peripheral interface 104, processor 103, and memory controller 102 may be implemented in a single chip. In some other instances, they can be implemented by independent chips respectively.

The input and output unit 105 is used to provide the user with input data to realize the interaction between the user and the server (or local terminal). The input and output unit 105 may be, but not limited to, a mouse and a keyboard.

The audio unit 106 provides an audio interface to the user and may include one or more microphones, one or more speakers, and audio circuitry.

The display unit 107 provides an interactive interface (such as a user operation interface) between the electronic device 100 and the user or is used to display image data for the user's reference. In this embodiment, the display unit 107 may be a liquid crystal display or a touch display. If it is a touch display, it can be a capacitive touch screen or a resistive touch screen supporting single-point and multi-touch operations. Supporting single-point and multi-touch operations means that the touch display can sense simultaneous touch operations from one or more positions on the touch display, and hand over the sensed touch operations to the processor 103 Perform calculations and processing.

The peripheral interface 104 couples various input/output devices to the processor 103 and the memory 101 . In some embodiments, peripheral interface 104, processor 103, and memory controller 102 may be implemented in a single chip. In some other instances, they can be implemented by independent chips respectively.

The input and output unit 105 is used to provide the user with input data to realize the interaction between the user and the processing terminal. The input and output unit 105 may be, but not limited to, a mouse and a keyboard.

It can be understood that the structure shown in FIG. 1 is only for illustration, and the electronic device 100 may also include more or less components than those shown in FIG. 1 , or have a configuration different from that shown in FIG. 1 . Each component shown in Fig. 1 may be implemented by hardware, software or a combination thereof.

Please refer to FIG. 2. FIG. 2 is a flowchart of a display brightness compensation method provided by an embodiment of the present invention. The method specifically includes the following steps:

Step S110: Obtain brightness information of the display area image of the display.

First of all, a general display is a display device with i rows and j columns, then the display can be regarded as a dot matrix composed of i*j pixels, assuming that each pixel includes three sub-pixels: red pixel R, green pixel G and blue pixel pixel B, the display can be regarded as i*j*3 sub-pixel dot matrix, for example, for a display with 5 rows and 5 columns, the display can be regarded as a 5*15 sub-pixel dot matrix at the same time. When the brightness compensation is performed on the image in the display area of the display, the brightness compensation is performed for each sub-pixel of the display.

Wherein, obtaining the brightness information of the display area image of the display means obtaining the brightness value of each pixel of the display area image, and obtaining the brightness value of each pixel may be obtained through an image sensor.

Step S120: Obtain a mura compensation value table according to the brightness information.

The mura compensation value table is determined according to the luminance value and target luminance value of each pixel obtained above in the display area image, the luminance value of the display area image is obtained by the above-mentioned image sensor, and the target luminance value can be preset, It can also be the average value obtained according to the brightness value of the acquired display area image, so the compensation value table of each pixel can be obtained by subtracting the brightness value of each pixel in the display area image from the target brightness value of each pixel, then Further, the mura compensation value table of the display area image can be obtained.

Step S130: Interleave division of the mura compensation value table according to different precisions.

First of all, the mura compensation value table can be interleaved with different precision according to the grayscale values of different brightnesses and actual needs, that is, the mura compensation value table is divided into M*N unit areas in an interleaved manner, wherein the M *N represents the precision, that is, the size of the unit area, M indicates the length of the divided unit area, and N indicates the width of the divided unit area.

In addition, for the convenience of calling, the mura compensation value table after interleaving can also be stored in the memory, which is flash, so that the stored data information can still be kept without being lost in the case of power failure. In order to reduce the storage space of data, each unit area can be assigned a uniform value according to each mura compensation value in each said unit area, and this value can be calculated according to each mura compensation value in the unit area. Mean or median value , or the mean value calculated from two values can be selected from the diagonal of the unit area as the unified value of the unit area, or any mura compensation value of the unit area can be used as the unified value of the unit area, or That is, each unit area has its own unified value, which is used to replace the individual mura compensation values of the unit area.

Different staggered divisions can be performed according to the division precision. Assume that the division precision of the mura compensation value is 4*4, since the values in the 4*4 area are replaced with uniform values to reduce the amount of data storage, and then Different staggered divisions are performed according to different division precisions. The more staggered ways, the more confusing the divided data can be, and effectively eliminate the sense of vertical or horizontal lines when dividing the unit area. For example, divide the mura compensation value table with the precision of M=N=4, line 1-4, take 4*4 as a unit area; the first unit area of line 5-8 uses 4*1 as a unit area , the other unit areas still use 4*4 as a unit area, and the last unit area is set to 4*3; the first unit area in rows 9-12 uses 4*2 as a unit area, and the other unit areas 4*4 is still used as a unit area, and the last unit area is set to 4*2; the first unit area in lines 13-16 is 4*1 as a unit area, and the other unit areas are still 4*4 As a unit area, the last unit area is set to a size of 4*3. The number of subsequent rows configures the size of the area according to the method of rows 1-16, or other interleaved combinations can also be used to achieve interleaved division. In the interleaved division, the division precision M and N can be determined according to the size of the mura compensation value and the compensation effect and other factors. The size of the entire division area can be m*n, where m=1,2,...,M , n=1, 2,..., N, the selection of m and n is based on the principle that the spatial stagger deviation of adjacent unit areas is large, so that the divided data becomes irregular in distribution shape.

Please refer to Fig. 3. Fig. 3 is a schematic diagram of a mura compensation value table provided by an embodiment of the present invention with 2*2 interlaced divisions. As shown in the figure, rows 1-2 use 2*2 as a unit area; - 4 rows The first unit area is 2*1 as a unit area, the other unit areas are still 2*2 as a unit area, the last unit area is set to 1*2 size, and the number of other rows is 1-4 The row division method is interleaved to realize the interleaving of data.

In Fig. 3, in the first line, a1, a2, a3, a4 are divided into a unit area, a1, a2, a3, a4 are each mura compensation value in the unit area, and each mura compensation value can be a display area image The compensation value of each pixel, then calculate A1=(a1+a2+a3+a4)/4, use the value of A1 as the unified value of the first unit area of the first row, in the second row, use b1 , b2 is divided into a unit area, B1=(b1+b2)/2 is calculated, and the value of B1 is used as the unified value of the first unit area in the second row, and the unified values of other divided unit areas can be obtained by this method out.

It should be noted that, in the above example, each cell is located in a row.

Please refer to Fig. 4. Fig. 4 is a schematic diagram of a mura compensation value table provided by an embodiment of the present invention with 4*4 interlaced divisions. As shown in the figure, rows 1-4 use 4*4 as a unit area; row 5 - The first unit area in the 8th row is 4*1 as a unit area, the other unit areas are still 4*4 as a unit area, and the last unit area is set to 4*3 size; the 9th-12th line One unit area takes 4*2 as a unit area, other unit areas still use 4*4 as a unit area, and the last unit area is set to 4*2 size; the first unit area in lines 13-16 is 4*1 is used as a unit area, other unit areas are still 4*4 as a unit area, the last unit area is set to 4*3 size, and the number of subsequent lines is configured according to the 1-16th line. .

Please refer to Figure 5. Figure 5 is a schematic diagram of another mura compensation value table provided by the embodiment of the present invention with 4*4 interlaced division. As shown in the figure, the first to fourth rows use 4*4 as a unit area; The first unit area in row 5-8 takes 1*4 as a unit area, the other unit areas still use 4*4 as a unit area, and the last unit area is set to 3*4 size; row 9-12 The first unit area takes 4*3 as a unit area, the other unit areas still use 4*4 as a unit area, and the last unit area is set to 4*1 size; the first unit area in lines 13-16 is 2*4 is used as a unit area, other unit areas still use 4*4 as a unit area, the last unit area is set to 2*4 size, and the number of subsequent rows is configured according to the size of the 1-16th row .

In addition, it should be noted that the embodiments of the present invention can also directly perform interleaved division on the brightness information of the obtained image of the display area of the display, that is, interleavedly divide each pixel value of the acquired image into multiple unit areas, and then divide the Compensate by calculating the compensation value of each pixel value of each unit area after division, or convert the brightness information of the obtained display area image of the display into a grayscale value, and then perform subsequent interleaved division, and then compensate the image etc., the process is the same as above, no matter which data is obtained by interleaved division, the compensation values of multiple interleaved unit areas will be obtained in the end, and then the image will be compensated and displayed.

Step S140: performing brightness compensation on the display area image according to the interleaved mura compensation value table.

After the mura compensation value table is staggered in the above steps, that is, the compensation value of each pixel of the display area image is staggered into different unit areas, and the compensation value in each unit area is replaced with a unified value, The uniform value is used as the compensation value to perform brightness compensation on the image in the display area, that is, to perform brightness compensation on each pixel in the image, so that the brightness is uniform, and effectively eliminates the line feeling brought to the user's vision when there is no staggered division.

When it is necessary to display the image of the display area after brightness compensation on the display, it is necessary to decode the mura compensation value table after interleaved division, so as to display the image after brightness compensation, please refer to Fig. 6, Fig. 6 A schematic diagram of the decoding of a mura compensation value table divided by 2*2 interlaced for the embodiment of the present invention. When it is necessary to restore the table data of height*width size, the value of a unit area needs to be used to fill the original M*N small In this way, the original mura compensation value table information will be lost, but the staggered compensation method makes the final decoded compensation table data staggered, which reduces the sensitivity of the human eye to the line, so that the compensation data close to the same amount It has a better compensation effect.

For example, the screen of a mobile phone is 100*100. When it is divided by 4*4, it becomes 25*25 unit area, and the data of 25*25 size is stored, but the actual screen is 100*100. Then decode according to the method in Figure 6, and expand the value A11 of the original unit area into 4*4=16 pixel grids, and finally restore the size to 100*100, but the value of the 4*4 unit area is the same. , so that it can be displayed on the final display.

It is hereby declared that, for the convenience of statement, the above-mentioned examples are all realized in the way of 2*2 or 4*4 combination, but the scope of protection of the present invention is not limited to the above-mentioned statement and embodiment, and the size of the M*N unit area can be Do any different settings, and the size m*n of the staggered area can be set differently according to the requirements, which are all within the protection scope of the present invention; the above-mentioned division unit area data is based on the mura compensation value, but the present invention The scope of protection is not limited to the above-mentioned statements and embodiments, and the unit area is divided based on the brightness information collected or the gray scale information corresponding to the brightness, and then the average value is calculated within the scope of protection of the present invention; the above examples The replacement values of the middle unit area are all calculated by means of mean value, but the scope of protection of the present invention is not limited to the above statements and embodiments, and the median value or other calculated values can be used to replace the value of the unit area. Any person skilled in the technical field to which the present invention belongs, without departing from the spirit and scope disclosed by the present invention, must still take the scope defined by the appended claims as the criterion.

Please refer to FIG. 7. FIG. 7 is a structural block diagram of a display brightness compensation device 200 provided by an embodiment of the present invention, which operates on a display, and the device includes:

The brightness information acquiring module 210 is configured to acquire the brightness information of the display area image of the display.

The compensation value acquisition module 220 is configured to acquire a mura compensation value table according to the brightness information.

The staggered division module 230 is configured to perform staggered division of the mura compensation value table according to different precisions.

The brightness compensation module 240 is configured to perform brightness compensation on the display area image according to the interleaved mura compensation value table.

Wherein, the interleaved division module 230 is specifically used to interleave the mura compensation value table into M*N unit areas, wherein the M*N represents accuracy, and M represents the length of the divided unit area , N represents the width of the divided unit area.

The interleaving division module 230 further includes: a unified value assignment module, configured to assign a unified value to each unit area according to each mura compensation value in each of the unit areas.

As a manner, the device further includes: a storage module and a display module.

A storage module, configured to store the interleaved mura compensation value table in memory.

A display module, configured to display the brightness-compensated image of the display area on the display.

Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method, and details are not repeated here.

To sum up, the embodiments of the present invention provide a display brightness compensation method and device. First, the brightness information of the display area image of the display is obtained, and then the mura compensation value table is obtained according to the brightness information, and the mura compensation value table is obtained according to the Different precisions are staggered and divided, and then brightness compensation is performed on the display area image according to the mura compensation value table after the staggered division. In this method, the staggered division of the mura compensation value table according to different precisions can effectively improve the image quality. Brightness compensation effect, so as to eliminate the line feeling caused by the visual accumulation characteristics of the human eye when the compensation value table is evenly divided according to different precisions.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may also be implemented in other ways. The device embodiments described above are only illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functions and possible implementations of devices, methods and computer program products according to multiple embodiments of the present invention. operate. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or part of code that includes one or more Executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified function or action , or may be implemented by a combination of dedicated hardware and computer instructions.

In addition, each functional module in each embodiment of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Claims (10)

1. a kind of display brightness compensation method, it is characterised in that methods described includes：

Obtain the monochrome information of display viewing area image；

Mura offset tables are obtained according to the monochrome information；

The mura offsets table is carried out according to different precision staggeredly to divide；

Luminance compensation is carried out to the viewing area image according to the mura offsets table after the staggeredly division.

2. according to the method described in claim 1, it is characterised in that carry out the mura offsets table according to different precision Staggeredly divide, including：

The mura offsets table is interlocked and is divided into M*N unit area, wherein, the M*N is expressed as precision, and M represents to draw The length for the unit area divided, N represents the width of the unit area divided.

3. method according to claim 2, it is characterised in that the mura offsets table interlocks and is divided into M*N not Also include after the step of with unit area：

Each mura offset in each unit area distributes a unified value for respective unit area.

4. according to the method described in claim 1, it is characterised in that carry out the mura offsets table according to different precision Staggeredly divide, the step with carrying out luminance compensation to the viewing area image according to the mura offsets table after the staggeredly division Between rapid, in addition to：

Mura offset tables after the staggeredly division are stored in internal memory.

5. according to the method described in claim 1, it is characterised in that according to the mura offsets table after the staggeredly division to institute After the step of stating viewing area image progress luminance compensation, in addition to：

The viewing area image carried out after luminance compensation is shown on the display.

6. a kind of dispay brightness compensator, it is characterised in that run on display, described device includes：

Monochrome information acquisition module, the monochrome information for obtaining display viewing area image；

Offset acquisition module, for obtaining mura offset tables according to the monochrome information；

Staggeredly division module, is divided for according to different precision interlock the mura offsets table；

Luminance compensation module, it is bright for being carried out according to the mura offsets table after the staggeredly division to the viewing area image Degree compensation.

7. device according to claim 6, it is characterised in that the staggeredly division module, specifically for by the mura Offset table, which interlocks, is divided into M*N unit area, wherein, the M*N is expressed as precision, and M represents the cellular zone divided The length in domain, N represents the width of the unit area divided.

8. device according to claim 7, it is characterised in that the staggeredly division module also includes：

Unified value distribute module, is respective unit area for each mura offset in each unit area Distribute a unified value.

9. device according to claim 6, it is characterised in that described device also includes：

Memory module, for the mura offset tables after the staggeredly division to be stored in internal memory.

10. device according to claim 6, it is characterised in that described device also includes：

Display module, for the viewing area image carried out after luminance compensation to be shown on the display.