CN106952626A - Mura compensation deals method, device and the liquid crystal display of RGBW pixel arrangement panels - Google Patents
Mura compensation deals method, device and the liquid crystal display of RGBW pixel arrangement panels Download PDFInfo
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- CN106952626A CN106952626A CN201710301925.3A CN201710301925A CN106952626A CN 106952626 A CN106952626 A CN 106952626A CN 201710301925 A CN201710301925 A CN 201710301925A CN 106952626 A CN106952626 A CN 106952626A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 16
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- OGFXBIXJCWAUCH-UHFFFAOYSA-N meso-secoisolariciresinol Natural products C1=2C=C(O)C(OC)=CC=2CC(CO)C(CO)C1C1=CC=C(O)C(OC)=C1 OGFXBIXJCWAUCH-UHFFFAOYSA-N 0.000 claims 1
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- 238000010586 diagram Methods 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 3
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- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 description 2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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Abstract
The present invention provides a kind of mura compensation deals method, device and the liquid crystal display of RGBW pixel arrangements panel.This method includes：Step 10, light in RGB combination pixel, W sub-pixel shoots the original mura situations of RGB combination pixel region in the case of not working, calculate RGB combination pixel gray level offset data table；Step 20, do not work in RGB combination pixel, W sub-pixel shoots the original mura situations in W sub-pixel region in the case of lighting, calculate W sub-pixel gray scale compensation tables of data；Step 30, store the RGB combination pixel gray level offset data table and W sub-pixel gray scale compensation tables of data respectively in a flash memory；When step 40, progress mura compensation deals, the corresponding RGB combination pixel gray level offset data of timing controller and W sub-pixel gray scale compensation data, the RGBW data after output mura compensation.Present invention also offers corresponding compensation deals device and liquid crystal display.Mura compensation deals method, device and the liquid crystal display of the present invention can improve the mura compensation effects of RGBW pixel arrangement panels.
Description
Technical field
The present invention relates to field of liquid crystal, more particularly to a kind of mura compensation deals sides of RGBW pixel arrangements panel
Method, device and liquid crystal display.
Background technology
The flat display apparatus such as liquid crystal display (LCD) are because thin and have a wide range of application etc. excellent with high image quality, power saving, fuselage
Point, and it is each to be widely used in mobile phone, TV, personal digital assistant, digital camera, notebook computer, desktop computer etc.
Consumption electronic products are planted, as the main flow in display device.
As shown in Figure 1A, its LCD that framework is arranged for existing rgb pixel.General LCD is arranged for rgb pixel
Column structure, its light transmittance is not high, in order to reach brightness demand, it is necessary to which LED backlight brightness is higher.As shown in Figure 1B, it is existing
The LCD of RGBW pixel arrangement frameworks.The LCD of RGBW pixel arrangement frameworks, increased W sub-pixel (white) light transmittance
It is higher than R, G, B sub-pixel, the overall light transmittance of panel can be improved, the demand of LED backlight brightness is reduced.
As shown in Figure 2 A, its be existing brightness unevenness compensation device structured flowchart.In order to solve on LCD processing procedures/device
Flaw and the brightness unevenness (mura) that produces, existing brightness unevenness compensation method be by gray scale compensation data storage with panel
(panel) in the flash memory (flash) 11 of collocation, then gone to read what is stored in flash memory by timing controller (TCON IC) 12
Mura offset datas, are entered with the luma data of input timing control chip 12 by De-mura (brightness unevenness compensation) module 13
Row computing adjusts grey decision-making, and then the luma data after the output of timing controller 12 mura compensation, changes the brightness of pixel
To reach brightness unevenness repair efficiency.
As shown in Figure 2 B, its be the original brightness unevenness of panel and brightness unevenness offset data schematic diagram.In order to solve LCD
The brightness unevenness produced on panel, shoots original mura situation (brightness) of the panel under fixed gray level, so using industrial camera
Afterwards on the basis of the brightness at face plate center position, the difference of each location of pixels brightness of panel and center brightness is calculated, further according to
The brightness of pixel is converted into the GTG numerical value for needing to compensate with GTG homologous thread.The pixel higher than center brightness is, it is necessary to reduce
GTG；The pixel lower than center brightness is, it is necessary to improve GTG.Offset data store in a flash memory, by timing controller according to
Location of pixels/grey decision-making of input data, go to read and offset data and search, calculate under respective pixel position/grey decision-making
Offset.The offset data stored in flash memory is the reverse gray scale compensation value of brightness unevenness position, i.e. De-mura offset datas.
As shown in Figure 1B, due to the addition of W sub-pixel, (each pixel need to include R, G, B to the actual pixels of LCD
Pixel) it can reduce, by taking full HD (FHD) resolution ratio (1920*1080) as an example, true resolution is changed into 1440*1080 (1920*
3/4=1440).If will RGBW panels according to FHD resolution ratio carry out mura data calculating, can by WRG, BWR, GBW work as
Make that normal rgb pixel carries out brightness and the conversion of GTG is handled, but be due to W sub-pixel characteristic and R, G, B sub-pixel it is poor
Different larger (with GTG, W brightness can be higher than R, G, B), the mura offset datas calculated can be inaccurate, causes mura to mend
Repay effect not good.
The content of the invention
It is an object of the invention to the LCD for RGBW pixel arrangements there is provided new mura compensation deals methods, with
Obtain more accurate mura offset datas.
A further object of the present invention be for RGBW pixel arrangements LCD there is provided a kind of compensation deals device, change
Kind mura compensation effects.
Another object of the present invention be the LCD for RGBW pixel arrangements there is provided a kind of liquid crystal display, improve
Mura compensation effects.
To achieve the above object, the invention provides a kind of mura compensation deals methods of RGBW pixel arrangements panel, bag
Include：
Step 10, on panel RGB combination pixel light, W sub-pixel do not work in the case of shoot RGB combination pixel region
Original mura situations, RGB combination pixel gray level is calculated according to the corresponding relation between the brightness of RGB combination pixel and GTG
Offset data table；
Step 20, RGB combination pixel does not work, W sub-pixel shoots the original in W sub-pixel region in the case of lighting on panel
Beginning mura situation, W sub-pixel gray scale compensation tables of data is calculated according to the corresponding relation between the brightness of W sub-pixel and GTG；
Step 30, store the RGB combination pixel gray level offset data table and W sub-pixel gray scale compensation number respectively in a flash memory
According to table；
When step 40, progress mura compensation deals, the RGBW data of input is divided into RGB combination pixel by timing controller
Data and W sub-pixel data, and RGB combination pixel gray level offset data table and W sub-pixel GTG in the flash memory are called respectively
Offset data meter calculates corresponding RGB combination pixel gray level offset data and W sub-pixel gray scale compensation data, output mura compensation
RGBW data afterwards.
Wherein, also including setting the panel true resolution the step of.
Wherein, for FHD resolution ratio 1920*1080 panel, true resolution is set as 1440*1080.
Wherein, step 10 includes：Shoot original mura situation of the panel under fixed gray level using industrial camera, then with
On the basis of brightness at face plate center position, the difference of each RGB combination location of pixels brightness of panel and center brightness, then root are calculated
The grey exponent number for needing to compensate is converted into according to the brightness and GTG homologous thread of RGB combination pixel, RGB combination pixel gray level is formed and mends
Repay tables of data.
Wherein, step 20 includes：Shoot original mura situation of the panel under fixed gray level using industrial camera, then with
On the basis of brightness at face plate center position, the difference of each W sub-pixel position brightness of panel and center brightness is calculated, further according to W
The brightness of sub-pixel is converted into the grey exponent number for needing to compensate with GTG homologous thread, forms W sub-pixel gray scale compensation tables of data.
Present invention also offers a kind of mura compensation deals devices of RGBW pixel arrangements panel, including flash memory and sequential control
Coremaking piece；The flash memory storage RGB combination pixel gray level offset data table and W sub-pixel gray scale compensation tables of data；Carry out mura benefits
When repaying processing, the RGBW data of input is divided into RGB combination pixel data and W sub-pixel data by timing controller, and respectively
RGB combination pixel gray level offset data table and W sub-pixel gray scale compensation tables of data in the flash memory is called to calculate corresponding RGB groups
Close pixel gray level offset data and W sub-pixel gray scale compensation data, the RGBW data after output mura compensation.
Present invention also offers a kind of liquid crystal display device, the liquid crystal display device includes above-mentioned RGBW pixel arrangements face
The mura compensation deals devices of plate.
To sum up, mura compensation deals method, device and the liquid crystal display of RGBW pixel arrangement panels of the invention can
More accurate mura offset datas are obtained, the mura compensation effects of RGBW pixel arrangement panels are improved.
Brief description of the drawings
Below in conjunction with the accompanying drawings, it is described in detail by the embodiment to the present invention, technical scheme will be made
And other beneficial effects are apparent.
In accompanying drawing,
Figure 1A is the LCD that existing rgb pixel arranges framework；
Figure 1B is the LCD of existing RGBW pixel arrangements framework；
Fig. 2A is the structured flowchart of existing brightness unevenness compensation device；
Fig. 2 B are the schematic diagram of the original brightness unevenness of panel and brightness unevenness offset data；
Fig. 3 and Fig. 4 is the processing of the preferred embodiment of mura compensation deals method one of RGBW pixel arrangements panel of the present invention
Process schematic；
Fig. 5 is the structured flowchart of the preferred embodiment of mura compensation deals device one of RGBW pixel arrangements panel of the present invention；
Fig. 6 is the flow chart of the mura compensation deals methods of RGBW pixel arrangements panel of the present invention.
Embodiment
Referring to Fig. 6, it is the flow chart of the mura compensation deals methods of RGBW pixel arrangements panel of the present invention.This method master
Including：
Step 10, on panel RGB combination pixel light, W sub-pixel do not work in the case of shoot RGB combination pixel region
Original mura situations, RGB combination pixel gray level is calculated according to the corresponding relation between the brightness of RGB combination pixel and GTG
Offset data table；
It can specifically include：Original mura situation of the panel under fixed gray level is shot using industrial camera, then with face
On the basis of the brightness of plate center position, the difference of each RGB combination location of pixels brightness of panel and center brightness is calculated, further according to
The brightness of RGB combination pixel is converted into the grey exponent number for needing to compensate with GTG homologous thread, forms the compensation of RGB combination pixel gray level
Tables of data；
Step 20, RGB combination pixel does not work, W sub-pixel shoots the original in W sub-pixel region in the case of lighting on panel
Beginning mura situation, W sub-pixel gray scale compensation tables of data is calculated according to the corresponding relation between the brightness of W sub-pixel and GTG；
It can specifically include：Original mura situation of the panel under fixed gray level is shot using industrial camera, then with face
On the basis of the brightness of plate center position, the difference of each W sub-pixel position brightness of panel and center brightness is calculated, further according to W
The brightness of pixel is converted into the grey exponent number for needing to compensate with GTG homologous thread, forms W sub-pixel gray scale compensation tables of data；
Step 30, store the RGB combination pixel gray level offset data table and W sub-pixel gray scale compensation number respectively in a flash memory
According to table；
When step 40, progress mura compensation deals, the RGBW data of input is divided into RGB combination pixel by timing controller
Data and W sub-pixel data, and RGB combination pixel gray level offset data table and W sub-pixel GTG in the flash memory are called respectively
Offset data meter calculates corresponding RGB combination pixel gray level offset data and W sub-pixel gray scale compensation data, output mura compensation
RGBW data afterwards
, will after timing controller receives location of pixels/grey decision-making of input data when carrying out mura compensation deals
RGB combination pixel and the input data of W sub-pixel are separated, and the gray scale compensation value that RGB combination pixel is calculated respectively is only sub with W
The gray scale compensation value of pixel, such RGB combination pixel and the corresponding gray scale compensation data of W sub-pixel can be more accurate, improve
Mura compensation effects.
The present invention is directed to the LCD of RGBW pixel arrangements, and W sub-pixel is separated with RGB combination pixel, respectively to all
W sub-pixel, RGB combination pixel carry out single mura samplings with calculating, and obtain single W sub-pixel and RGB combination pixel
Mura offset data tables, will both simultaneously storage into flash memory, called respectively by timing controller.
In order that existing mura compensation systems can be carried out when taking pictures according to actual pixels quantity/resolution ratio of panel
Mura compensation calculations, the step of can also including setting the panel true resolution.For example, for FHD resolution ratio 1920*1080
Panel, true resolution is set as 1440*1080.
Single mura samplings are carried out to all W sub-pixels, RGB combination pixel and refer to existing rgb pixel row with calculating
Column structure mura compensation deals methods.Step 10 can include：It is original under fixed gray level that panel is shot using industrial camera
Mura situations, then on the basis of the brightness at face plate center position, calculate each RGB combination location of pixels brightness of panel and center
The difference of brightness, is converted into the grey exponent number that needs are compensated further according to brightness and the GTG homologous thread of RGB combination pixel, is formed
RGB combination pixel gray level offset data table.Step 20 can include：Original of the panel under fixed gray level is shot using industrial camera
Beginning mura situation, then on the basis of the brightness at face plate center position, calculates each W sub-pixel position brightness of panel and center is bright
The difference of degree, is converted into the grey exponent number that needs are compensated further according to brightness and the GTG homologous thread of W sub-pixel, forms W sub-pixel
Gray scale compensation tables of data.
Referring to Fig. 3 and Fig. 4, it is the preferred embodiment of mura compensation deals method one of RGBW pixel arrangements panel of the present invention
Processing procedure schematic diagram.By taking the FHD resolution panels of RGBW pixel arrangements as an example, by this panel point in mura compensation systems
Resolution is set as 1440*1080 pixels, in the original mura situations under shooting panel fixed gray level, by RGB combination pixel and W
Sub-pixel is separated, i.e., light in RGB combination pixel, W sub-pixel do not work in the case of shooting RGB combination pixel region it is original
Mura situations (as shown in Figure 3), and do not work in RGB combination pixel, W sub-pixel shoots W sub-pixel region in the case of lighting
Original mura situations (as shown in Figure 4), further according to RGB combination pixel and the respective characteristic of W sub-pixel (brightness and GTG it
Between corresponding relation) calculate gray scale compensation tables of data a and b, gray scale compensation tables of data a and b are respectively stored in flash memory
Diverse location, after timing controller receives location of pixels/grey decision-making of input data, by RGB combination pixel and the sub- pictures of W
The input data of element is separated, and the gray scale compensation value of RGB combination pixel is only calculated by tables of data a, the gray scale compensation of W sub-pixel
Value is only calculated by tables of data b, and such RGB combination pixel and the corresponding gray scale compensation data of W sub-pixel can be more accurate, carry
High mura compensation effects.
Referring to Fig. 5, it is the knot of the preferred embodiment of mura compensation deals device one of RGBW pixel arrangements panel of the present invention
Structure block diagram.The device mainly includes flash memory 51 and timing controller 52；The flash memory 51 storage RGB combination pixel gray level compensation number
According to table and W sub-pixel gray scale compensation tables of data；When carrying out mura compensation deals, timing controller 52 is by the RGBW data of input
It is divided into RGB combination pixel data and W sub-pixel data, is adjusted respectively by RGB combination pixel processing unit and W sub-pixel processing unit
Corresponding RGB groups are calculated with the RGB combination pixel gray level offset data table in the flash memory 51 and W sub-pixel gray scale compensation tables of data
Pixel gray level offset data and W sub-pixel gray scale compensation data are closed, finally merge the RGBW data after output mura compensation.
By the mura compensation deals devices of the above-mentioned RGBW pixel arrangements panel of application, the present invention can also be provided accordingly
Liquid crystal display device.
To sum up, mura compensation deals method, device and the liquid crystal display of RGBW pixel arrangement panels of the invention can
More accurate mura offset datas are obtained, the mura compensation effects of RGBW pixel arrangement panels are improved.
The above, for the person of ordinary skill of the art, can be with technique according to the invention scheme and technology
Other various corresponding changes and deformation are made in design, and all these changes and deformation should all belong to appended right of the invention
It is required that protection domain.
Claims (7)
1. a kind of mura compensation deals methods of RGBW pixel arrangements panel, it is characterised in that including：
Step 10, on panel RGB combination pixel light, W sub-pixel do not work in the case of shoot RGB combination pixel region original
Beginning mura situation, the compensation of RGB combination pixel gray level is calculated according to the corresponding relation between the brightness of RGB combination pixel and GTG
Tables of data；
Step 20, RGB combination pixel does not work, W sub-pixel shoots the original of W sub-pixel region in the case of lighting on panel
Mura situations, W sub-pixel gray scale compensation tables of data is calculated according to the corresponding relation between the brightness of W sub-pixel and GTG；
Step 30, store the RGB combination pixel gray level offset data table and W sub-pixel gray scale compensation data respectively in a flash memory
Table；
When step 40, progress mura compensation deals, the RGBW data of input is divided into RGB combination pixel data by timing controller
With W sub-pixel data, and RGB combination pixel gray level offset data table and the W sub-pixel gray scale compensation in the flash memory are called respectively
Tables of data calculates corresponding RGB combination pixel gray level offset data and W sub-pixel gray scale compensation data, after output mura compensation
RGBW data.
2. the mura compensation deals methods of RGBW pixel arrangements panel as claimed in claim 1, it is characterised in that also including setting
The step of fixed panel true resolution.
3. the mura compensation deals methods of RGBW pixel arrangements panel as claimed in claim 2, it is characterised in that for FHD
Resolution ratio 1920*1080 panel, true resolution is set as 1440*1080.
4. the mura compensation deals methods of RGBW pixel arrangements panel as claimed in claim 1, it is characterised in that step 10 is wrapped
Include：Original mura situation of the panel under fixed gray level is shot using industrial camera, then with the brightness at face plate center position
On the basis of, the difference of each RGB combination location of pixels brightness of panel and center brightness is calculated, further according to the brightness of RGB combination pixel
The grey exponent number for needing to compensate is converted into GTG homologous thread, RGB combination pixel gray level offset data table is formed.
5. the mura compensation deals methods of RGBW pixel arrangements panel as claimed in claim 1, it is characterised in that step 20 is wrapped
Include：Original mura situation of the panel under fixed gray level is shot using industrial camera, then with the brightness at face plate center position
On the basis of, the difference of each W sub-pixel position brightness of panel and center brightness is calculated, further according to brightness and the GTG pair of W sub-pixel
Answer curve to be converted into the grey exponent number for needing to compensate, form W sub-pixel gray scale compensation tables of data.
6. the mura compensation deals devices of a kind of RGBW pixel arrangements panel, it is characterised in that including flash memory and SECO core
Piece；The flash memory storage RGB combination pixel gray level offset data table and W sub-pixel gray scale compensation tables of data；Carry out at mura compensation
During reason, the RGBW data of input is divided into RGB combination pixel data and W sub-pixel data by timing controller, and is called respectively
RGB combination pixel gray level offset data table and W sub-pixel gray scale compensation tables of data in the flash memory calculate corresponding RGB combination picture
Plain gray scale compensation data and W sub-pixel gray scale compensation data, the RGBW data after output mura compensation.
7. a kind of liquid crystal display device, it is characterised in that the liquid crystal display device includes RGBW pixels as claimed in claim 6
Arrange the mura compensation deals devices of panel.
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