CN106601167B - A kind of gray level compensation method of display panel, device and system - Google Patents
A kind of gray level compensation method of display panel, device and system Download PDFInfo
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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
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
Abstract
The embodiment of the invention discloses a kind of gray level compensation methods of display panel, device and system, are related to field of display technology.Wherein, gray level compensation method includes: brightness value of the target sub-pixel of acquisition display panel under multiple different grayscale, to obtain multiple groups grayscale and brightness value corresponding with grayscale；According to multiple groups grayscale and brightness value corresponding with grayscale, the gamma average value of target sub-pixel is obtained；It is compensated according to target gray scale of the gamma average value to target sub-pixel, obtains compensation grayscale of the target sub-pixel under object brightness.Gray level compensation method provided in an embodiment of the present invention, device and system, it is compensated by using grayscale of the gamma average value to target sub-pixel, so that intrinsic brilliance of the target sub-pixel after compensation under grayscale and object brightness are essentially identical, gray scale compensation is carried out to display panel to realize.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of gray level compensation methods of display panel, device
And system.
Background technique
When manufacturing display panel, due to production technology etc. defect, it will appear each pixel in display panel same
The phenomenon that brightness irregularities shown under one grayscale value, namely there is brighter or darker pixel.
For above-mentioned phenomenon, in the prior art, pixel is corrected using gamma curve, can not be reached good
Compensation effect.
Therefore, how compensating to solve display panel and show unevenly to each pixel, become urgently to be resolved
Problem.
Summary of the invention
The present invention provides a kind of gray level compensation method of display panel, device and system, is carried out with realizing to display panel
Gray scale compensation, to enable display panel uniform display.
In a first aspect, the embodiment of the invention provides a kind of gray level compensation methods of display panel, comprising:
Brightness value of the target sub-pixel of the display panel under multiple different grayscale is obtained, to obtain multiple groups institute
State grayscale and brightness value corresponding with the grayscale；
The grayscale according to multiple groups and brightness value corresponding with the grayscale, the gamma for obtaining the target sub-pixel are average
Value；
The target gray scale of target sub-pixel is compensated according to the gamma average value, the target sub-pixel is obtained and exists
Compensation grayscale under object brightness.
Second aspect, the embodiment of the invention provides a kind of gray scale compensation devices of display panel, comprising:
Luminance acquisition module, the target sub-pixel for obtaining the display panel are bright under multiple different grayscale
Angle value；
Gamma average value obtains module, is used for the grayscale according to multiple groups and brightness value corresponding with the grayscale, obtains
The gamma average value of the target sub-pixel；
It compensates grayscale and obtains module, for being mended according to the gamma average value to the target gray scale of target sub-pixel
It repays, obtains compensation grayscale of the target sub-pixel under object brightness.
The third aspect, the embodiment of the invention provides a kind of gray scale compensation systems of display panel, including any of the above-described institute
Gray scale compensation device, charge-coupled device camera and the display panel stated.
The gray level compensation method of display panel provided in an embodiment of the present invention, device and system, first acquisition display panel
Brightness value of the target sub-pixel under multiple different grayscale, then according to obtained multiple groups grayscale and corresponding with each grayscale
Brightness value, obtain target sub-pixel gamma average value, finally according to gamma average value to the target gray scale of target sub-pixel
It compensates, obtains compensation grayscale of the target sub-pixel under object brightness, compensated by the grayscale to target sub-pixel,
So that brightness of the target sub-pixel after compensation under grayscale and object brightness are essentially identical, ash is carried out to display panel to realize
Rank compensation.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the gray level compensation method of the display panel provided in the embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the gray scale compensation device of the display panel provided in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the gray scale compensation device of another display panel provided in the embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of the gray scale compensation system of the display panel provided in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of flow diagram of the gray level compensation method of the display panel provided in the embodiment of the present invention.The party
Method each sub-pixel suitable for display panel is shown under same grayscale unevenly, to need each sub-pixel to display panel
The case where carrying out gray scale compensation.This method can be by the grayscale of the display panel in the gray scale compensation system that configured in display panel
Compensation device executes.The gray scale compensation device of display panel can be realized by the mode of software and/or hardware.
With reference to Fig. 1, a kind of gray level compensation method of the display panel provided in the embodiment of the present invention includes the following steps:
Step 110 obtains brightness value of the target sub-pixel of display panel under multiple different grayscale, more to obtain
Group grayscale and brightness value corresponding with grayscale.
Each pixel generally includes 1 sub-pixel points in display panel pixel array, such as including red sub- picture
Element, green sub-pixels and blue subpixels.By obtaining the target sub-pixel of display panel under multiple different grayscale
Brightness value can get multiple groups grayscale and brightness value corresponding with the grayscale.Illustratively, if target sub-pixel is red
It is red that this can be obtained then by obtaining the red sub-pixel brightness value under 20,40,80,100 and 255 grayscale respectively in sub-pixel
Sub-pixels multiple groups grayscale and brightness value corresponding with the grayscale.It should be noted that obtain grayscale and with the grayscale pair
The group number for the brightness value answered, is determined according to actual needs.Furthermore it is possible to obtain each sub- picture using charge-coupled device camera
The brightness value of element.
Step 120, according to multiple groups grayscale and brightness value corresponding with grayscale, obtain the gamma average value of target sub-pixel.
The multiple groups grayscale according to obtained in above-mentioned steps and brightness value corresponding with grayscale can obtain target by calculating
The gamma average value of sub-pixel.Illustratively, gamma value of the target sub-pixel under each grayscale first, to each gamma obtained
Value carries out averaged to get the gamma average value of target sub-pixel is arrived.
Step 130 is compensated according to target gray scale of the gamma average value to target sub-pixel, is obtained target sub-pixel and is existed
Compensation grayscale under object brightness.
Target sub-pixel is being obtained after the object brightness under target gray scale, in conjunction with target got in above-mentioned steps
The gamma average value of pixel, by the compensation grayscale that can be calculated target gray scale.
The gray level compensation method of display panel provided in an embodiment of the present invention obtains the target sub-pixel of display panel first
Brightness value under multiple different grayscale obtains then according to obtained multiple groups grayscale and brightness value corresponding with each grayscale
The gamma average value of target sub-pixel is taken, is finally compensated, is obtained according to target gray scale of the gamma average value to target sub-pixel
It to compensation grayscale of the target sub-pixel under object brightness, is compensated by the grayscale to target sub-pixel, so that target is sub
Brightness of the pixel after compensation under grayscale and object brightness are essentially identical, carry out gray scale compensation to display panel to realize.
Optionally, in above-mentioned gray level compensation method, target sub-pixel is any sub-pixel in display panel.Target
Pixel can be any one of display panel sub-pixel, any one sub-pixel in display panel can be used above-mentioned
Gray level compensation method carries out gray scale compensation.
Optionally, in above-mentioned gray level compensation method, obtain compensation grayscale of the target sub-pixel under object brightness it
Afterwards, further includes: show target sub-pixel according to compensated grayscale.Specifically, in the compensation ash for getting target sub-pixel
After rank, the compensated grayscale size of target sub-pixel can be obtained.Show that target sub-pixel according to compensated grayscale,
Then realize the gray scale compensation to target sub-pixel.
Optionally, in above-mentioned gray level compensation method, the target sub-pixel of the display panel is being obtained in multiple not phases
Before brightness value under same grayscale, further includes: make to issue the sub-pixel of same color light simultaneously in each pixel of display panel
It shines；Brightness value of all light emitting sub-pixels under target gray scale is obtained, the average value of all light emitting sub-pixel brightness values is true
It is set to target brightness value of the target sub-pixel under target gray scale.Specifically, making to issue face of the same race in each pixel of display panel
The sub-pixel of coloured light shines simultaneously, compensates processing simultaneously convenient for the sub-pixel to all same colors, simplifies treatment process.
In addition, by the way that the average value of all light emitting sub-pixel brightness values is determined as object brightness of the target sub-pixel under target gray scale
Value, even if also target brightness value of the sub-pixel of same color under target gray scale is the same brightness value, then carrying out ash
After rank compensation, the display brightness of the sub-pixel of same color is essentially identical, and display effect is more preferable.
Optionally, described according to multiple groups grayscale and brightness value corresponding with grayscale in above-mentioned gray level compensation method, it obtains
The gamma average value of target sub-pixel includes: the gamma average value that the target sub-pixel is calculated according to following formula,
Wherein, B is the gamma average value of the target sub-pixel, and N is the integer greater than 1 and less than 255, and i is 1 into N
Any integer, LiIt in grayscale is G for the target sub-pixeliWhen brightness value, grayscale GiGreater than 0 and less than 255, L255For institute
State brightness value of the target sub-pixel when grayscale is 255.Illustratively, in the grayscale G for obtaining 5 groups of target sub-pixels1、G2、G3、
G4、G5With corresponding brightness L1、L2、L3、L4、L5Afterwards, this 5 groups of data are substituted into formula (1), the gal of target sub-pixel can be obtained
Horse average value B.
Optionally, it in above-mentioned gray level compensation method, is carried out according to target gray scale of the gamma average value to target sub-pixel
Compensation, obtaining compensation grayscale of the target sub-pixel under object brightness includes: to calculate the target sub-pixel according to following formula
Compensation grayscale under object brightness,
Wherein, it is G that G, which is the grayscale of the target sub-pixel,iWhen compensation grayscale, LGiFor with GiCorresponding target sub-pixel
Target brightness value.Specifically, brightness value of the target sub-pixel when grayscale is 255 can be measured by optical detection apparatus
L255, and after getting the gamma average value B of target sub-pixel, it substitutes into above-mentioned formula (2) and obtains grayscale GiCompensation grayscale
G.Gamma value of the target sub-pixel under any grayscale cannot represent the gamma value in other grayscale, obtain using under multiple grayscale
To gamma average value the grayscale of target sub-pixel is compensated, can be effectively reduced compensation error, reduce to grayscale into
The data processing time of row compensation.
Optionally, in above-mentioned gray level compensation method, the target sub-pixel is being calculated in object brightness according to formula (2)
Under compensation grayscale after include: to store compensation grayscale of the target sub-pixel under object brightness.Specifically, calculating target
Sub-pixel stores the compensation grayscale after the compensation grayscale under object brightness, convenient for subsequent burned display panel with
Gray scale compensation is carried out to target sub-pixel.
Fig. 2 is a kind of structural schematic diagram of the gray scale compensation device of the display panel provided in the embodiment of the present invention, reference
Fig. 2, the embodiment of the invention provides a kind of gray scale compensation devices of display panel, which includes: luminance acquisition
Module 21, gamma average value obtain module 22, compensation grayscale obtains module 23.
Wherein, luminance acquisition module 21, for obtaining the target sub-pixel of display panel under multiple different grayscale
Brightness value；Gamma average value obtains module 22, for obtaining target according to multiple groups grayscale and brightness value corresponding with grayscale
The gamma average value of pixel；It compensates grayscale and obtains module 23, for the target gray scale according to gamma average value to target sub-pixel
It compensates, obtains compensation grayscale of the target sub-pixel under object brightness.
The gray scale compensation device of display panel provided in an embodiment of the present invention obtains the target sub-pixel of display panel first
Brightness value under multiple different grayscale obtains then according to obtained multiple groups grayscale and brightness value corresponding with each grayscale
The gamma average value of target sub-pixel is taken, is finally compensated, is obtained according to target gray scale of the gamma average value to target sub-pixel
It to compensation grayscale of the target sub-pixel under object brightness, is compensated by the grayscale to target sub-pixel, so that target is sub
Brightness of the pixel after compensation under grayscale and object brightness are essentially identical, carry out gray scale compensation to display panel to realize.
Optionally, in above-mentioned apparatus, further includes: display module (is not shown) in Fig. 2, for by target sub-pixel according to
Compensated grayscale is shown.
Optionally, in above-mentioned apparatus, gamma average value obtains module 22 and is specifically used for: calculating target according to following formula
The gamma average value of sub-pixel,
Wherein, B is the gamma average value of target sub-pixel, and N is the integer greater than 1 and less than 255, and i was 1 appointing into N
One integer, LiIt in grayscale is G for target sub-pixeliWhen brightness value, grayscale GiGreater than 0 and less than 255, L255For target sub-pixel
Brightness value when grayscale is 255.
Optionally, in above-mentioned apparatus, compensation grayscale obtains module 23 and is specifically used for: calculating target according to following formula
Compensation grayscale of the pixel under object brightness,
Wherein, G is the compensation grayscale of target sub-pixel, LGiFor the target brightness value of target sub-pixel.
Fig. 3 is the structural schematic diagram of the gray scale compensation device of another display panel provided in the embodiment of the present invention, ginseng
Fig. 3 is examined, optionally, in above-mentioned apparatus, further includes: memory module 24, for storing target sub-pixel under object brightness
Compensate grayscale.
Optionally, it can also include: drive module 25 in above-mentioned apparatus, be sent out in each pixel of display panel for making
The sub-pixel of same color light shines simultaneously out；Target brightness value determining module 26, for obtaining all light emitting sub-pixels in mesh
The brightness value under grayscale is marked, the average value of all light emitting sub-pixel brightness values is determined as target sub-pixel under target gray scale
Target brightness value.
Optionally, in above-mentioned apparatus, target sub-pixel is any sub-pixel of display panel.
It should be noted that the gray scale compensation device of display panel provided by the embodiment of the present invention can be used for executing sheet
The gray level compensation method of display panel provided by inventive embodiments has corresponding function and beneficial effect.
Fig. 4 is a kind of structural schematic diagram of the gray scale compensation system of the display panel provided in the embodiment of the present invention.With reference to
Fig. 4, the embodiment of the present invention provide a kind of gray scale compensation system of display panel, including any of the above-described gray scale compensation device
31, charge-coupled device camera 32 and display panel 33.Specifically, the charge-coupled device camera 32 is described aobvious for acquiring
Show the image information of electronic image in panel 33, gray scale compensation device 31 is according to the image information to the target in display panel 33
Sub-pixel carries out gray scale compensation, and shows that target sub-pixel to complete gray scale compensation according to compensated grayscale.The present invention is real
The gray scale compensation system for applying display panel provided by example can be used for executing display panel provided by the embodiment of the present invention
Gray level compensation method has corresponding function and beneficial effect.
On the basis of above-mentioned gray scale compensation system, display panel 33 can be organic light emitting display panel.Existing
In organic light emitting display panel, each sub-pixel especially shows that the deviation of the gamma curve in uneven region is usually bigger, adopts
With the gray level compensation method of display panel provided in an embodiment of the present invention, grayscale benefit more effectively can be carried out to display panel
It repays, to make display more evenly.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (12)
1. a kind of gray level compensation method of display panel characterized by comprising
Brightness value of the target sub-pixel of the display panel under multiple different grayscale is obtained, to obtain ash described in multiple groups
Rank and brightness value corresponding with the grayscale；
The grayscale according to multiple groups and brightness value corresponding with the grayscale, obtain the gamma average value of the target sub-pixel；
The target gray scale of target sub-pixel is compensated according to the gamma average value, obtains the target sub-pixel in target
Compensation grayscale under brightness；
Wherein, the grayscale according to multiple groups and brightness value corresponding with the grayscale, obtain the gal of the target sub-pixel
Horse average value includes:
The gamma average value of the target sub-pixel is calculated according to following formula,
Wherein, B is the gamma average value of the target sub-pixel, and N is the integer greater than 1 and less than 255, and i was 1 appointing into N
One integer, LiIt in grayscale is G for the target sub-pixeliWhen brightness value, grayscale GiGreater than 0 and less than 255, L255For the mesh
Mark brightness value of the sub-pixel when grayscale is 255；
It is described that the target gray scale of target sub-pixel is compensated according to the gamma average value, it obtains the target sub-pixel and exists
Compensation grayscale under object brightness includes:
Compensation grayscale of the target sub-pixel under object brightness is calculated according to following formula,
Wherein, G is the compensation grayscale of the target sub-pixel, LGiFor the target brightness value of the target sub-pixel.
2. gray level compensation method according to claim 1, which is characterized in that obtain the target sub-pixel in mesh described
After compensation grayscale under mark brightness, further includes:
The target sub-pixel is shown according to compensated grayscale.
3. gray level compensation method according to claim 1, which is characterized in that calculate the target according to following formula described
Sub-pixel includes: after the compensation grayscale under object brightness
Store compensation grayscale of the target sub-pixel under object brightness.
4. any gray level compensation method in -3 according to claim 1, which is characterized in that obtain the display panel described
Target sub-pixel before the brightness value under multiple different grayscale, comprising:
Make the sub-pixel for issuing same color light in each pixel of the display panel while shining；
Brightness value of all light emitting sub-pixels under target gray scale is obtained, the average value of all light emitting sub-pixel brightness values is determined
For target brightness value of the target sub-pixel under target gray scale.
5. gray level compensation method according to claim 1, which is characterized in that the target sub-pixel is the display panel
Any sub-pixel.
6. a kind of gray scale compensation device of display panel characterized by comprising
Luminance acquisition module, for obtaining brightness of the target sub-pixel of the display panel under multiple different grayscale
Value；
Gamma average value obtains module, the grayscale according to multiple groups and brightness value corresponding with the grayscale is used for, described in acquisition
The gamma average value of target sub-pixel；
Compensation grayscale obtains module and obtains for being compensated according to the gamma average value to the target gray scale of target sub-pixel
Take compensation grayscale of the target sub-pixel under object brightness；
Wherein, the gamma average value obtains module and is specifically used for:
The gamma average value of the target sub-pixel is calculated according to following formula,
Wherein, B is the gamma average value of the target sub-pixel, and N is the integer greater than 1 and less than 255, and i was 1 appointing into N
One integer, LiIt in grayscale is G for the target sub-pixeliWhen brightness value, grayscale GiGreater than 0 and less than 255, L255For the mesh
Mark brightness value of the sub-pixel when grayscale is 255；
The compensation grayscale obtains module and is specifically used for:
Compensation grayscale of the target sub-pixel under object brightness is calculated according to following formula,
Wherein, G is the compensation grayscale of the target sub-pixel, LGiFor the target brightness value of the target sub-pixel.
7. gray scale compensation device according to claim 6, which is characterized in that further include:
Display module, for showing the target sub-pixel according to compensated grayscale.
8. gray scale compensation device according to claim 6, which is characterized in that further include:
Memory module, for storing compensation grayscale of the target sub-pixel under object brightness.
9. according to the gray scale compensation device any in claim 6-8, which is characterized in that further include:
Drive module, for making the sub-pixel for issuing same color light in each pixel of the display panel while shining；
Target brightness value determining module shines for obtaining brightness value of all light emitting sub-pixels under target gray scale by all
The average value of sub-pixel luminance values is determined as target brightness value of the target sub-pixel under target gray scale.
10. gray scale compensation device according to claim 6, which is characterized in that the target sub-pixel is the display panel
Any sub-pixel.
11. a kind of gray scale compensation system of display panel, which is characterized in that including the grayscale any in claim 6-10
Compensation device, charge-coupled device camera and display panel.
12. gray scale compensation system according to claim 11, which is characterized in that the display panel is organic light emitting display
Panel.
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