CN106531050A - Method, device and system for gray scale compensation of display panel - Google Patents
Method, device and system for gray scale compensation of display panel Download PDFInfo
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- 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
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Abstract
The embodiment of the invention discloses a method, device and system for gray scale compensation of a display panel, and relates to the technical field of display. The gray scale compensation method includes obtaining an average value of a brightness value of each subpixel in a target area of the display panel under an input gray scale, and obtaining at least one group of input gray scales of the target area and brightness values corresponding to the input gray scales; and according to the at least one group of input gray scales of the target area and the brightness values corresponding to the input gray scales and a target brightness value range corresponding to the input gray scales, determining a gray scale compensation value of each input gray scale. According to the gray scale compensation method, device and system provided by the embodiment of the invention, gray scale compensation is performed on the target area, so that the brightness of the target area under the compensated gray scale is located in the target brightness value range, thereby realizing gray scale compensation of the display panel.
Description
Technical field
The present embodiments relate to display technology field, more particularly to a kind of gray level compensation method of display floater, device
And system.
Background technology
When display floater is manufactured, due to the aspect defect such as production technology, in display floater, occur each pixel same
The phenomenon of the brightness irregularities shown under one grey decision-making, namely there is brighter or dark pixel.
For above-mentioned phenomenon, in prior art, single is done using gamma curve and calculated to be corrected to pixel, not
Good compensation effect can be reached.
Therefore, how display floater is compensated and shows uneven to solve display floater, become urgently to be resolved hurrily and ask
Topic.
The content of the invention
The present invention provides a kind of gray level compensation method of display floater, device and system, to realize carrying out display floater
Gray scale compensation, so that display floater uniformly can show.
In a first aspect, a kind of gray level compensation method of display floater is embodiments provided, including：
The meansigma methodss of brightness value of each sub-pixel under input GTG in the target area of the display floater are obtained, and is obtained
Take；
Be input into according to the least one set of the target area GTG and with the corresponding brightness value of the input GTG with
And target brightness value scope corresponding with the input GTG, determine the gray scale compensation value of each input GTG.
Second aspect, embodiments provides a kind of gray scale compensation device of display floater, including：
Acquisition module, for obtaining brightness value of each sub-pixel under input GTG in the target area of the display floater
Meansigma methodss, and to obtain and be input into GTG and brightness corresponding with the input GTG described in the least one set of the target area
Value；
Determining module, for GTG is input into according to the least one set of the target area and GTG pair is input into described
The brightness value answered and target brightness value scope corresponding with the input GTG, determine the gray scale compensation of each input GTG
Value.
The third aspect, embodiments provides a kind of gray scale compensation system of display floater, including any of the above-described institute
Gray scale compensation device, charge-coupled device camera and the display floater stated.
The gray level compensation method of display floater provided in an embodiment of the present invention, device and system, obtain the display first
The meansigma methodss of brightness value of each sub-pixel under input GTG in the target area of panel, and obtain the target area at least
GTG and brightness value corresponding with the input GTG are input into described in one group, then the least one set institute according to the target area
Input GTG and brightness value corresponding with the input GTG and target brightness value scope corresponding with the input GTG are stated,
So that it is determined that the gray scale compensation value of each input GTG, by carrying out gray scale compensation to target area so that target area exists
Brightness after compensation under GTG is located in the range of target brightness value, so as to realize carrying out gray scale compensation to display floater.
Description of the drawings
Fig. 1 is a kind of schematic flow sheet of the gray level compensation method of the display floater provided in the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the gray level compensation method of another display floater provided in the embodiment of the present invention；
Fig. 3 is the schematic flow sheet of the gray level compensation method of another display floater provided in the embodiment of the present invention；
Fig. 4 is the schematic flow sheet of the gray level compensation method of another display floater provided in the embodiment of the present invention；
Fig. 5 is a kind of structural representation of the gray scale compensation device of the display floater provided in the embodiment of the present invention；
Fig. 6 is the structural representation of the gray scale compensation device of another display floater provided in the embodiment of the present invention；
Fig. 7 is the structural representation of the gray scale compensation device of another display floater provided in the embodiment of the present invention；
Fig. 8 is a kind of structural representation of the gray scale compensation system of the display floater 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 limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Fig. 1 is a kind of schematic flow sheet of the gray level compensation method of the display floater provided in the embodiment of the present invention.The benefit
Compensation method suitable for when each sub-pixel brightness irregularities under same GTG display floater, so as to need to each of display floater
Sub-pixel carries out the situation of gray scale compensation.The method can be by the display floater being configured in the gray scale compensation system of display floater
Gray scale compensation device performing.Wherein the gray scale compensation device of display floater can come real by the mode of software and/or hardware
It is existing.
With reference to Fig. 1, a kind of gray level compensation method of the display floater provided in the embodiment of the present invention comprises the steps：
Step 110, the meansigma methodss for obtaining brightness value of each sub-pixel under input GTG in the target area of display floater,
And obtain the least one set input GTG and brightness value corresponding with input GTG of target area.
Display floater includes multiple pixels, and each pixel includes multiple sub-pixels, region is carried out to each sub-pixel and is drawn
Point, then display floater is divided into into multiple regions, in each region, includes at least one pixel.Obtain the target of display floater
In region, brightness value of each sub-pixel under input GTG, then asks for the meansigma methodss of the brightness value of acquisition, will be the meansigma methodss true
It is set to the brightness value of target area.Repeat with obtain target area least one set be input into GTG and with it is each input GTG it is corresponding
Brightness value.
Step 120, be input into according to the least one set of target area GTG and with the corresponding brightness value of input GTG and with
The corresponding target brightness value scope of input GTG, determines the gray scale compensation value of each input GTG.
The least one set for getting target area be input into GTG and with after each input corresponding brightness value of GTG, with reference to
It is each to be input into the corresponding target brightness value scope of GTG and compensation formula, determine the gray scale compensation value of each input GTG.It is exemplary
, after the least one set for getting target area is input into GTG and brightness value corresponding with each input GTG, with reference to defeated with each
Enter the corresponding target brightness value scope of GTG and polynomial in one indeterminate compensation formula, it may be determined that the gray scale compensation of each input GTG
Value.
The gray level compensation method of display floater provided in an embodiment of the present invention, is obtained in the target area of display floater first
Each sub-pixel input GTG under brightness value meansigma methodss, and obtain target area least one set input GTG and with input
The corresponding brightness value of GTG, then according to the least one set of target area be input into GTG and with the corresponding brightness value of input GTG with
And target brightness value scope corresponding with input GTG, so that it is determined that the gray scale compensation value of each input GTG, by mesh
Mark region carries out gray scale compensation so that brightness of the target area after compensation under GTG is located in the range of target brightness value, so as to
Realization carries out gray scale compensation to display floater.
Optionally, on the basis of above-mentioned gray level compensation method, obtain display floater target area in each sub-pixel
Input GTG under brightness value meansigma methodss, and obtain target area least one set input GTG and with input GTG it is corresponding
Brightness value before, including：The sub-pixel of same color light is sent in making each pixel of display floater while luminous；Obtain all
The meansigma methodss of all light emitting sub-pixel brightness values are defined as target area and are existed by brightness value of the light emitting sub-pixel under input GTG
Target brightness value under input GTG.Specifically, the sub-pixel of same color light is sent in making each pixel of display floater while
It is luminous, it is easy to the sub-pixel to all same colors while compensating process, simplifies processing procedure.In addition, by owning
The meansigma methodss of light emitting sub-pixel brightness value are defined as target brightness value of the target sub-pixel under target gray scale, even if also face of the same race
Target brightness value of the sub-pixel of color under target gray scale is same brightness value, then after gray scale compensation is carried out, face of the same race
The display brightness of the sub-pixel of color is essentially identical, shows evenly.
Optionally, on the basis of above-mentioned gray level compensation method, subject brightness range is to be obtained based on target brightness value
Error allowed band, thinks that intrinsic brilliance value is equal with target brightness value if intrinsic brilliance value is in error allowed band.
Specifically, after to being input into gray scale compensation, if the intrinsic brilliance value for detecting the target area is located at the input GTG
Target brightness value error allowed band in, the error such as between intrinsic brilliance value and target brightness value be target brightness value
0.1%, then it is assumed that intrinsic brilliance value is identical with target brightness value, has reached compensation target.It should be noted that error is
Specially how much a 0.1% simply citing, need to be determined according to actual needs, and error is less, shows more after compensation
Uniformly, but to display floater manufacturing process also require that higher.
Optionally, on the basis of above-mentioned gray level compensation method, obtain display floater target area in each sub-pixel
Input GTG under brightness value meansigma methodss, and obtain target area least one set input GTG and with input GTG it is corresponding
Brightness value before, also include：The deviation of the threshold voltage of each sub-pixel driving transistor is obtained, and deviation is defined as
The driving voltage offset of sub-pixel；The driving voltage of each sub-pixel is compensated according to driving voltage offset.Specifically,
Each sub-pixel driving transistor has different mobilitys due to due to manufacturing process, therefore has different threshold values each other
Voltage.By the deviation for obtaining the threshold voltage of each sub-pixel driving transistor, and the deviation is defined as into sub-pixel
Driving voltage offset, is then compensated to the driving voltage of each sub-pixel respectively according to the driving voltage offset.
The threshold voltage unification of the driving transistor of each sub-pixel is made, so that the display of each sub-pixel is more uniform.
Optionally, on the basis of above-mentioned gray level compensation method, according to the least one set of target area be input into GTG and
Brightness value corresponding with input GTG and target brightness value scope corresponding with input GTG, determine the GTG of each input GTG
After offset, also include：Driving voltage offset corresponding with input GTG is determined according to the gray scale compensation value of input GTG.
Specifically, after the gray scale compensation value for getting input GTG, it is translated into driving voltage corresponding with gray scale compensation value and mends
Value is repaid, the wherein transforming relationship between gray scale compensation value and corresponding driving voltage offset can be carried out really by experiment test
It is fixed.
Fig. 2 is the schematic flow sheet of the gray level compensation method of another display floater provided in the embodiment of the present invention,
It is on the basis of above-mentioned gray level compensation method, described that GTG and defeated with described is input into according to the least one set of the target area
Enter the corresponding brightness value of GTG and target brightness value scope corresponding with the input GTG, determine each input GTG
Gray scale compensation value includes：According to the multigroup described input GTG and brightness value corresponding with the input GTG of the target area
Determine the compensation formula of the target area；According to compensation formula target brightness value model corresponding with the input GTG
Enclose and target brightness value corresponding with the input GTG, determine the gray scale compensation value of the input GTG.Namely step 120
Comprise the steps 121 and 122.
With reference to Fig. 2, the gray level compensation method is specifically included：
Step 110, the meansigma methodss for obtaining brightness value of each sub-pixel under input GTG in the target area of display floater,
And obtain the least one set input GTG and brightness value corresponding with input GTG of target area.
Step 121, the multigroup input GTG according to target area and brightness value corresponding with input GTG determine target area
The compensation formula in domain.
After multigroup input GTG and brightness value corresponding with each input GTG is obtained, it may be determined that go out the benefit of target area
Formula is repaid, such as, using polynomial in one indeterminate as compensation formula, using multigroup input GTG and corresponding bright with input GTG
Angle value can determine that the coefficient of the polynomial in one indeterminate, so as to be compensated formula, it is also possible to determine other compensation formulas.
It is step 122, with the corresponding target brightness value scope of input GTG and corresponding with input GTG according to compensation formula
Target brightness value, it is determined that input GTG gray scale compensation value.
It is determined that after compensation formula, according to compensation formula and target brightness value corresponding with input GTG, can obtain
With the input corresponding gray scale compensation value of GTG, each sub-pixel in the target area is made to show according to the GTG after compensation, such as
The intrinsic brilliance value of fruit target area is in the range of target brightness value corresponding with input GTG, it is determined that go out to be input into GTG
Gray scale compensation value.
Optionally, on the basis of above-mentioned gray level compensation method, according to multigroup input GTG of target area and with input
The corresponding brightness value of GTG determines that the compensation formula of target area includes：It is according to m groups input GTG and corresponding with GTG is input into
Brightness value, determines the coefficient A of following compensation formulam、Am-1……A1,
G=AmLm+Am-1Lm-1+L+A1L-GN (1)
Wherein, GNFor the input GTG of target area, L is and input GTG GNCorresponding brightness value, G are input GTG GN
Gray scale compensation value, m be more than or equal to 2 less than or equal to 256 integer.Specifically, it is grey in acquisition m groups input GTG and with being input into
After the corresponding brightness value of rank, compensation formula (1) is substituted into, coefficient A is obtained by solving polynomial in one indeterminate equation groupm、
Am-1……A1, namely determine compensation formula (1).
On the basis of above-mentioned gray level compensation method, according to compensation formula target brightness value model corresponding with input GTG
Enclose and target brightness value corresponding with input GTG, it is determined that the gray scale compensation value of input GTG includes：According to input GTG
Corresponding target brightness value and above-mentioned compensation formula, it is determined that input GTG GNMiddle gray scale compensation value；Make input GTG according to
Middle gray scale compensation value is compensated, the above-mentioned compensation process of repetition, after compensation the brightness value of target area positioned at input
In the range of the corresponding target brightness value of GTG；By the brightness value of target area positioned at target brightness value model corresponding with input GTG
When enclosing interior, the GTG for actually entering and the difference of input GTG are as the gray scale compensation value for being input into GTG.GTG shown in Fig. 2 is mended
Compensation method, compensates by target compensation of region to display floater, simplifies compensation deals process, processing speed faster,
Reduce the memory space of offset data.
Optionally, on the basis of above-mentioned gray level compensation method, according to compensation formula target corresponding with input GTG
Range of luminance values and target brightness value corresponding with input GTG, it is determined that after the gray scale compensation value of input GTG, including：Obtain
The gray scale compensation value in display floater all regions under input GTG is taken, to obtain the gray scale compensation value matrix of display floater；Root
The gray scale compensation value of each sub-pixel of display floater is determined according to gray scale compensation value matrix and two-dimensional interpolation method.Specifically, obtaining
To in display floater after the gray scale compensation value in all regions, the gray scale compensation value in all regions can be expanded using two-dimensional interpolation method
Open up the gray scale compensation value for sub-pixel.Exemplary, if display floater is divided into 16X16 region, each region includes
The gray scale compensation value in each region, after the gray scale compensation value in 16X16 region is got, can be determined by 4X4 pixel
For the gray scale compensation value of second row secondary series (being determined as needed) this pixel in respective region, then using two dimension
This 16X16 gray scale compensation value is expanded to interpolation method the gray scale compensation value of each pixel.It should be noted that in above-mentioned compensation
During, the identical sub-pixel of glow color in each pixel is defined as into sub-pixel to be compensated when compensating every time.The gray scale compensation
The gray scale compensation value in all regions is expanded to using two-dimensional interpolation method in method the gray scale compensation value of each sub-pixel, benefit is simplified
The complexity of process is repaid, the memory space of offset data is reduced, the process time needed for gray scale compensation is reduced.
Fig. 3 is the schematic flow sheet of the gray level compensation method of another display floater provided in the embodiment of the present invention, ginseng
Fig. 3 is examined, on the basis of above-mentioned gray level compensation method, each sub-pixel is under input GTG in the target area of acquisition display floater
Brightness value meansigma methodss, and obtain target area least one set input GTG and with the input corresponding brightness value bag of GTG
Include：If target area is a pixel region, reality of the sub-pixel of the pixel region under multiple input GTGs is obtained
Brightness value, is input into GTG and intrinsic brilliance value corresponding with input GTG with the least one set for obtaining sub-pixel.According to target area
The least one set input GTG in domain and brightness value corresponding with input GTG and target brightness value model corresponding with input GTG
Enclose, determine that the gray scale compensation value of each input GTG includes：If sub-pixel input GTG under intrinsic brilliance value beyond with it is defeated
Enter the corresponding target brightness value scope of GTG, and the intrinsic brilliance value of sub-pixel more than object brightness corresponding with input GTG
Value, the then GTG for input GTG being deducted into fixed value to obtain being input into after gray scale compensation；Sub-pixel is made according to the GTG after compensation
Show, the above-mentioned compensation process of repetition, until the intrinsic brilliance value of sub-pixel is located in subject brightness range；By the reality of sub-pixel
When brightness value is located in subject brightness range, the GTG for actually entering is defined as being input into the GTG of GTG with the difference of input GTG
Offset.Namely step 110 comprises the steps 111, step 120 comprises the steps 123,124,125.
With reference to Fig. 3, the gray level compensation method is specifically included：
If step 111, target area are a pixel region, the sub-pixel of the pixel region is obtained in multiple inputs
Intrinsic brilliance value under GTG, is input into GTG and intrinsic brilliance corresponding with input GTG with the least one set for obtaining sub-pixel
Value.
When target area only includes a pixel, then a certain sub-pixel of the pixel region is obtained in multiple input GTGs
Under intrinsic brilliance value, namely obtain the sub-pixel least one set input GTG and with the input corresponding intrinsic brilliance of GTG
Value.
If the intrinsic brilliance value of step 123, sub-pixel under input GTG is bright beyond target corresponding with input GTG
Angle value scope, and the intrinsic brilliance value of sub-pixel is more than target brightness value corresponding with input GTG, then will be input into GTG and deduct
GTG of the fixed value to obtain being input into after gray scale compensation.
Intrinsic brilliance value of the sub-pixel under input GTG is detected, if intrinsic brilliance value is beyond corresponding with input GTG
Target brightness value scope, and the intrinsic brilliance value of sub-pixel more than with the input corresponding target brightness value of GTG, then will input
GTG deducts fixed value with the GTG for obtaining being input into after gray scale compensation.Wherein, the fixed value for deducting can be integer 1,2,3 or its
His integer, is determined according to actual needs.
Step 124, sub-pixel is made to show according to the GTG after compensation, the above-mentioned compensation process of repetition, until the reality of sub-pixel
Border brightness value is located in subject brightness range.
After GTG after sub-pixel compensation is determined, sub-pixel is made to show according to the GTG after compensation, if after compensation
The intrinsic brilliance value for obtaining still is more than beyond target brightness value scope corresponding with input GTG, and the intrinsic brilliance value of sub-pixel
Target brightness value corresponding with input GTG, then continue above-mentioned compensation process, until the intrinsic brilliance value of sub-pixel is located at target
In brightness range.
Step 125, by the intrinsic brilliance value of sub-pixel be located at subject brightness range in when, the GTG for actually entering with input
The difference of GTG is defined as the gray scale compensation value for being input into GTG.
After above-mentioned compensation process is carried out, if the intrinsic brilliance value of sub-pixel is located in subject brightness range, illustrate
Compensation is completed, and the GTG for now actually entering and the difference of input GTG are defined as being input into the gray scale compensation value of GTG.
Fig. 4 is the schematic flow sheet of the gray level compensation method of another display floater provided in the embodiment of the present invention, ginseng
Examine Fig. 4, optionally, on the basis of above-mentioned gray level compensation method, according to the least one set of target area be input into GTG and with it is defeated
Enter the corresponding brightness value of GTG and target brightness value scope corresponding with input GTG, determine the gray scale compensation of each input GTG
Value can also include：If intrinsic brilliance value of the sub-pixel under input GTG is beyond target brightness value corresponding with input GTG
Scope, and input GTG is then increased fixation less than target brightness value corresponding with input GTG by the intrinsic brilliance value of sub-pixel
GTG of the value to obtain being input into after gray scale compensation；Sub-pixel is made to show according to the GTG after compensation, the above-mentioned compensation process of repetition, directly
Intrinsic brilliance value to sub-pixel is located in subject brightness range；The intrinsic brilliance value of sub-pixel is located in subject brightness range
When, the GTG for actually entering is defined as being input into the gray scale compensation value of GTG with the difference of input GTG.Namely under step 110 includes
Step 111 is stated, step 120 comprises the steps 126,127,128.
If step 111, target area are a pixel region, the sub-pixel of the pixel region is obtained in multiple inputs
Intrinsic brilliance value under GTG, is input into GTG and intrinsic brilliance corresponding with input GTG with the least one set for obtaining sub-pixel
Value.
If the intrinsic brilliance value of step 126, sub-pixel under input GTG is bright beyond target corresponding with input GTG
Angle value scope, and the intrinsic brilliance value of sub-pixel is less than target brightness value corresponding with input GTG, then will input GTG increase
GTG of the fixed value to obtain being input into after gray scale compensation.
Intrinsic brilliance value of the detection sub-pixel under input GTG simultaneously judge, if intrinsic brilliance value beyond with input GTG
Corresponding target brightness value scope, and the intrinsic brilliance value of sub-pixel less than with the input corresponding target brightness value of GTG, then will
The GTG that input GTG increases fixed value to obtain being input into after gray scale compensation.Equally, the fixed value of increase can be every time here
Integer 1,2,3 or other integers, also need to be determined according to actual needs.It should be noted that the fixed value for increasing every time and
The fixed value for deducting every time can be same value, or different values.
Step 127, sub-pixel is made to show according to the GTG after compensation, the above-mentioned compensation process of repetition, until the reality of sub-pixel
Border brightness value is located in subject brightness range.
After GTG after sub-pixel compensation is determined, sub-pixel is made to show according to the GTG after compensation, if after compensation
The intrinsic brilliance value for obtaining still is less than beyond target brightness value scope corresponding with input GTG, and the intrinsic brilliance value of sub-pixel
Target brightness value corresponding with input GTG, then continue above-mentioned compensation process, until the intrinsic brilliance value of sub-pixel is located at target
In brightness range.
Step 128, by the intrinsic brilliance value of sub-pixel be located at subject brightness range in when, the GTG for actually entering with input
The difference of GTG is defined as the gray scale compensation value for being input into GTG.
To sum up, the gray level compensation method shown in Fig. 3 and Fig. 4, is the reality for first judging sub-pixel under input GTG
Brightness value whether beyond target brightness value scope corresponding with input GTG, if beyond and the intrinsic brilliance value of sub-pixel be less than
Target brightness value corresponding with input GTG, the then GTG for input GTG being increased into fixed value to obtain being input into after gray scale compensation；
If beyond and sub-pixel intrinsic brilliance value more than with the input corresponding target brightness value of GTG, will input GTG deduct it is solid
GTG of the definite value to obtain being input into after gray scale compensation, until the intrinsic brilliance value of sub-pixel is located in subject brightness range, passes through
Said process can quickly to display floater in the input GTG of each sub-pixel carry out gray scale compensation, to realize making display surface
Plate uniformly shows.
Optionally, on the basis of above-mentioned gray level compensation method, object brightness is located in the intrinsic brilliance value by sub-pixel
In the range of when, the GTG for actually entering with input GTG difference be defined as be input into GTG gray scale compensation value after also include：
According to interpolation algorithm, each gray scale compensation value of the sub-pixel under multiple input GTGs is expanded in 0 to 255 arbitrary input GTGs
The offset of lower input GTG.Specifically, after the multiple of sub-pixel gray scale compensation value corresponding with input GTG is obtained, pass through
They are expanded to 256 gray scale compensation values of the sub-pixel under 0-255 this 256 GTGs by differential technique.Exemplary, if
9 gray scale compensation values of the sub-pixel when GTG is respectively 20,30,50,80,100,150,180,220 and 250 are obtained, then
Using interpolation method by this 9 gray scale compensation value extensions, gray scale compensation of the sub-pixel in 0-255 under arbitrary GTG can be obtained
Value.The gray level compensation method simplifies gray scale compensation process, can be quickly obtained arbitrary input of sub-pixel using interpolation method
The gray scale compensation value of GTG.
Fig. 5 is a kind of structural representation of the gray scale compensation device of the display floater provided in the embodiment of the present invention, reference
Fig. 5, embodiments provides a kind of gray scale compensation device of display floater, and the gray scale compensation device includes：Acquisition module
11st, determining module 12.
Wherein, acquisition module 11, it is bright under input GTG for obtaining each sub-pixel in the target area of display floater
The meansigma methodss of angle value, and obtain the least one set input GTG and brightness value corresponding with input GTG of target area；Determine mould
Block 12, for according to the least one set of target area be input into GTG and with the corresponding brightness value of input GTG and with input GTG
Corresponding target brightness value scope, determines the gray scale compensation value of each input GTG.
The gray scale compensation device of display floater provided in an embodiment of the present invention, is obtained in the target area of display floater first
Each sub-pixel input GTG under brightness value meansigma methodss, and obtain target area least one set input GTG and with input
The corresponding brightness value of GTG, then according to the least one set of target area be input into GTG and with the corresponding brightness value of input GTG with
And target brightness value scope corresponding with input GTG, so that it is determined that the gray scale compensation value of each input GTG, by mesh
Mark region carries out gray scale compensation so that brightness of the target area after compensation under GTG is located in the range of target brightness value, so as to
Realization carries out gray scale compensation to display floater.
In above-mentioned gray scale compensation device, optionally, subject brightness range is to be permitted based on the error that target brightness value is obtained
Perhaps scope, thinks that intrinsic brilliance value is equal with target brightness value if intrinsic brilliance value is in error allowed band.
In above-mentioned gray scale compensation device, optionally, also include：Threshold voltage compensation module, for obtaining each sub-pixel
The deviation of the threshold voltage of driving transistor, and deviation is defined as the driving voltage offset of sub-pixel；Driving voltage
Compensating module, for being compensated to the driving voltage of each sub-pixel according to driving voltage offset.
In above-mentioned gray scale compensation device, optionally, also include：Driving voltage offset determining module, for according to defeated
The gray scale compensation value for entering GTG determines driving voltage offset corresponding with input GTG.
Fig. 6 is the structural representation of the gray scale compensation device of another display floater provided in the embodiment of the present invention, ginseng
Fig. 6 is examined, in above-mentioned gray scale compensation device, optionally, determining module 12 includes：Compensation formula determining unit 121, for basis
Multigroup input GTG of target area and brightness value corresponding with input GTG determine the compensation formula of target area；First GTG
Offset determining unit 122, for according to compensation formula and the corresponding target brightness value scope of input GTG and with input ash
The corresponding target brightness value of rank, it is determined that the gray scale compensation value of input GTG.
In above-mentioned gray scale compensation device, optionally, compensation formula determining unit 121 includes：Compensation formula determines that son is single
Unit, for being input into GTG and brightness value corresponding with input GTG according to m groups, determines the coefficient A of following compensation formulam、
Am-1……A1,
G=AmLm+Am-1Lm-1+L+A1L-GN,
Wherein, GNFor the input GTG of target area, L is and input GTG GNCorresponding brightness value, G are input GTG GN
Gray scale compensation value, m be more than or equal to 2 less than or equal to 256 integer；
First gray scale compensation value determining unit 122 includes：Middle gray scale compensation value determination subelement, for basis and input
The corresponding target brightness value of GTG and above-mentioned compensation formula, it is determined that input GTG GNMiddle gray scale compensation value；Compensation subelement,
For making input GTG compensate according to middle gray scale compensation value, the above-mentioned compensation process of repetition, the target area after compensation
Brightness value positioned at in the range of the input corresponding target brightness value of GTG；Gray scale compensation value determination subelement, for by target
When the brightness value in region is positioned at in the range of the input corresponding target brightness value of GTG, the GTG for actually entering and input GTG
Gray scale compensation value of the difference as input GTG.
In above-mentioned gray scale compensation device, optionally, also include：Gray scale compensation value matrix determining unit, it is aobvious for obtaining
Show the gray scale compensation value in panel all regions under input GTG, to obtain the gray scale compensation value matrix of display floater；Second is grey
Rank offset determining unit, for the ash of each sub-pixel of display floater is determined according to gray scale compensation value matrix and two-dimensional interpolation method
Rank offset.
Fig. 7 is the structural representation of the gray scale compensation device of another display floater provided in the embodiment of the present invention, ginseng
Fig. 7 is examined, in above-mentioned gray scale compensation device, optionally, acquisition module 11 includes：Intrinsic brilliance value acquiring unit 111, for such as
Fruit target area is a pixel region, then obtain intrinsic brilliance of the sub-pixel of the pixel region under multiple input GTGs
Value, is input into GTG and intrinsic brilliance value corresponding with input GTG with the least one set for obtaining sub-pixel；Determining module 12 includes：
First gray scale compensation unit 123, if for intrinsic brilliance value of the sub-pixel under input GTG beyond corresponding with input GTG
Target brightness value scope, and the intrinsic brilliance value of sub-pixel more than with the input corresponding target brightness value of GTG, then will input
GTG deducts fixed value with the GTG for obtaining being input into after gray scale compensation；Sub-pixel is made to show according to the GTG after compensation, in repetition
Compensation process is stated, until the intrinsic brilliance value of sub-pixel is located in subject brightness range；3rd gray scale compensation value determining unit
124, during for the intrinsic brilliance value of sub-pixel is located in subject brightness range, the difference of the GTG for actually entering and input GTG
Value is defined as the gray scale compensation value for being input into GTG.
With reference to Fig. 7, in above-mentioned gray scale compensation device, optionally, determining module 12 can also include：Second gray scale compensation
Unit 125, if for intrinsic brilliance value of the sub-pixel under input GTG beyond target brightness value corresponding with input GTG
Scope, and input GTG is then increased fixation less than target brightness value corresponding with input GTG by the intrinsic brilliance value of sub-pixel
GTG of the value to obtain being input into after gray scale compensation；Sub-pixel is made to show according to the GTG after compensation, the above-mentioned compensation process of repetition, directly
Intrinsic brilliance value to sub-pixel is located in subject brightness range；4th gray scale compensation value determining unit 126, for by sub-pixel
Intrinsic brilliance value be located at subject brightness range in when, the GTG for actually entering with input GTG difference be defined as be input into GTG
Gray scale compensation value.
In above-mentioned gray scale compensation device, optionally, also include：Expansion module, for according to interpolation algorithm, by sub-pixel
Each gray scale compensation value under multiple input GTGs expands to the offset that GTG is input under 0 to 255 arbitrary input GTGs.
In above-mentioned gray scale compensation device, optionally, also include：Light emitting module, for making in each pixel of display floater
The sub-pixel of same color light is sent while luminous；Target brightness value determining module, for obtaining all light emitting sub-pixels defeated
Enter the brightness value under GTG, the meansigma methodss of all light emitting sub-pixel brightness values are defined as into mesh of the target area under input GTG
Mark brightness value.
It should be noted that the gray scale compensation device of display floater provided by the embodiment of the present invention can be used for performing sheet
The gray level compensation method of the display floater provided by inventive embodiments, possesses corresponding function and beneficial effect.
Fig. 8 is a kind of structural representation of the gray scale compensation system of the display floater provided in the embodiment of the present invention.With reference to
Fig. 8, the embodiment of the present invention provide a kind of gray scale compensation system of display floater, including any of the above-described described gray scale compensation device
21st, charge coupled camera 22 and display floater 23.Specifically, the charge coupled camera 22 is used to gather the display floater 23
The image information of middle electronic image is obtaining the monochrome information of target area；The monochrome information that gray scale compensation device 21 is obtained is to aobvious
Show that the target area in panel 23 carries out gray scale compensation, and make target area show according to the GTG after compensation to complete GTG benefit
Repay.
On the basis of above-mentioned gray scale compensation system, display floater 23 is organic electroluminescence display panel.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (23)
1. a kind of gray level compensation method of display floater, it is characterised in that include：
The meansigma methodss of brightness value of each sub-pixel under input GTG in the target area of the display floater are obtained, and obtains institute
State；
Be input into according to the least one set of the target area GTG and with the corresponding brightness value of the input GTG and with
It is described to be input into the corresponding target brightness value scope of GTG, determine the gray scale compensation value of each input GTG.
2. the gray level compensation method of display floater according to claim 1, it is characterised in that the subject brightness range is
Based on the error allowed band that target brightness value is obtained, think described if intrinsic brilliance value is in the error allowed band
Intrinsic brilliance value is equal with the target brightness value.
3. the gray level compensation method of display floater according to claim 1, it is characterised in that obtain the display described
The meansigma methodss of brightness value of each sub-pixel under input GTG in the target area of panel, and obtain the target area at least
Before GTG and brightness value corresponding with the input GTG are input into described in one group, also include：
The deviation of the threshold voltage of each sub-pixel driving transistor is obtained, and the deviation is defined as into the sub-pixel
Driving voltage offset；
The driving voltage of each sub-pixel is compensated according to the driving voltage offset.
4. according to the gray level compensation method of the display floater described in claim 1, it is characterised in that described according to the target area
Be input into described in the least one set in domain GTG and with the corresponding brightness value of the input GTG and corresponding with the input GTG
Target brightness value scope, after determining the gray scale compensation value of each input GTG, also includes：
Driving voltage offset corresponding with the input GTG is determined according to the gray scale compensation value of the input GTG.
5. the gray level compensation method of display floater according to claim 1, it is characterised in that described according to the target area
Be input into described in the least one set in domain GTG and with the corresponding brightness value of the input GTG and corresponding with the input GTG
Target brightness value scope, determines that the gray scale compensation value of each input GTG includes：
The mesh is determined according to the multigroup described input GTG and brightness value corresponding with the input GTG of the target area
The compensation formula in mark region；
It is with the corresponding target brightness value scope of the input GTG and corresponding with the input GTG according to the compensation formula
Target brightness value, determine it is described input GTG gray scale compensation value.
6. the gray level compensation method of display floater according to claim 5, it is characterised in that described according to the target area
The multigroup described input GTG in domain and brightness value corresponding with the input GTG determine the compensation formula bag of the target area
Include：
According to the m groups input GTG and brightness value corresponding with the input GTG, the coefficient of following compensation formula is determined
Am、Am-1……A1,
G=AmLm+Am-1Lm-1+L+A1L-GN,
Wherein, GNFor the input GTG of target area, L is and the input GTG GNCorresponding brightness value, G are the input ash
Rank GNGray scale compensation value, m be more than or equal to 2 less than or equal to 256 integer；
It is described according to the compensation formula and the corresponding target brightness value scope of the input GTG and with the input GTG
Corresponding target brightness value, determines that the gray scale compensation value of the input GTG includes：
The corresponding target brightness value of GTG and above-mentioned compensation formula are input into according to described, the input GTG G is determinedNCentre
Gray scale compensation value；
The input GTG is made to compensate according to the middle gray scale compensation value, the above-mentioned compensation process of repetition, after compensation
The brightness value of the target area is in the range of target brightness value corresponding with the input GTG；
During by the brightness value of the target area in the range of target brightness value corresponding with the input GTG, actually enter
GTG with it is described input GTG difference as it is described input GTG gray scale compensation value.
7. the gray level compensation method of the display floater according to claim 5 or 6, it is characterised in that described in the basis
Compensation formula target brightness value scope corresponding with the input GTG and object brightness corresponding with the input GTG
Value, after determining the gray scale compensation value of the input GTG, including：
The gray scale compensation value in the display floater all regions under the input GTG is obtained, to obtain the display floater
Gray scale compensation value matrix；
The gray scale compensation value of each sub-pixel of the display floater is determined according to the gray scale compensation value matrix and two-dimensional interpolation method.
8. the gray level compensation method of display floater according to claim 1, it is characterised in that the acquisition display surface
The meansigma methodss of brightness value of each sub-pixel under input GTG in the target area of plate, and obtain at least the one of the target area
The group input GTG and brightness value corresponding with the input GTG include：
If the target area is a pixel region, the sub-pixel for obtaining the pixel region is input under GTGs multiple
Intrinsic brilliance value, be input into GTG and reality corresponding with the input GTG is bright to obtain described in the least one set of the sub-pixel
Angle value；
It is described be input into according to the least one set of the target area GTG and with the corresponding brightness value of the input GTG with
And target brightness value scope corresponding with the input GTG, determine that the gray scale compensation value of each input GTG includes：
If intrinsic brilliance value of the sub-pixel under input GTG is beyond target brightness value corresponding with the input GTG
Scope, and the intrinsic brilliance value of the sub-pixel is more than target brightness value corresponding with the input GTG, then by the input
GTG deducts fixed value to obtain the GTG after the input gray scale compensation；
The sub-pixel is shown according to the GTG after compensation, the above-mentioned compensation process of repetition, until the reality of the sub-pixel it is bright
Angle value is located in the subject brightness range；
When the intrinsic brilliance value of the sub-pixel is located in the subject brightness range, the GTG for actually entering and the input
The difference of GTG is defined as the gray scale compensation value of the input GTG.
9. the gray level compensation method of display floater according to claim 8, it is characterised in that described according to the target area
Be input into described in the least one set in domain GTG and with the corresponding brightness value of the input GTG and corresponding with the input GTG
Target brightness value scope, determines that the gray scale compensation value of each input GTG also includes：
If intrinsic brilliance value of the sub-pixel under input GTG is beyond target brightness value corresponding with the input GTG
Scope, and the intrinsic brilliance value of the sub-pixel is less than target brightness value corresponding with the input GTG, then by the input
GTG increases fixed value to obtain the GTG after the input gray scale compensation；
The sub-pixel is shown according to the GTG after compensation, the above-mentioned compensation process of repetition, until the reality of the sub-pixel it is bright
Angle value is located in the subject brightness range；
When the intrinsic brilliance value of the sub-pixel is located in the subject brightness range, the GTG for actually entering and the input
The difference of GTG is defined as the gray scale compensation value of the input GTG.
10. the gray level compensation method of display floater according to claim 8 or claim 9, it is characterised in that described by the son
When the intrinsic brilliance value of pixel is located in the subject brightness range, the GTG for actually entering is true with the difference of the input GTG
Also include after being set to the gray scale compensation value of the input GTG：
According to interpolation algorithm, each gray scale compensation value of the sub-pixel under multiple input GTGs is expanded to arbitrary 0 to 255
The offset of the input GTG under input GTG.
The gray level compensation method of 11. display floaters according to claim 1, it is characterised in that obtain described aobvious described
Show the meansigma methodss of brightness value of each sub-pixel under input GTG in the target area of panel, and obtain the target area extremely
Before GTG and brightness value corresponding with the input GTG are input into described in few one group, including：
The sub-pixel of same color light is sent in making each pixel of the display floater while luminous；
Brightness value of all light emitting sub-pixels under input GTG is obtained, the meansigma methodss of all light emitting sub-pixel brightness values are determined
For target brightness value of the target area under input GTG.
The gray scale compensation device of 12. a kind of display floaters, it is characterised in that include：
Acquisition module, for obtaining the flat of brightness value of each sub-pixel under input GTG in the target area of the display floater
Average, and described in the least one set of the acquisition target area, it is input into GTG and brightness value corresponding with the input GTG；
Determining module, for according to the least one set of the target area be input into GTG and with it is described input GTG it is corresponding
Brightness value and target brightness value scope corresponding with the input GTG, determine the gray scale compensation value of each input GTG.
The gray scale compensation device of 13. display floaters according to claim 12, it is characterised in that the subject brightness range
Be the error allowed band obtained based on target brightness value, institute is thought if intrinsic brilliance value is in the error allowed band
State intrinsic brilliance value equal with the target brightness value.
The gray scale compensation device of 14. display floaters according to claim 12, it is characterised in that also include：
Threshold voltage compensation module, for obtaining the deviation of the threshold voltage of each sub-pixel driving transistor, and will be described inclined
Difference is defined as the driving voltage offset of the sub-pixel；
Driving voltage compensating module, for being mended to the driving voltage of each sub-pixel according to the driving voltage offset
Repay.
15. according to the display floater described in claim 12 gray scale compensation device, it is characterised in that also include：
Driving voltage offset determining module, for being determined and the input GTG according to the gray scale compensation value of the input GTG
Corresponding driving voltage offset.
The gray scale compensation device of 16. display floaters according to claim 12, it is characterised in that the determining module bag
Include：
Compensation formula determining unit, for according to the target area it is multigroup described input GTG and with it is described input GTG pair
The brightness value answered determines the compensation formula of the target area；
First gray scale compensation value determining unit, for according to compensation formula object brightness corresponding with the input GTG
Value scope and target brightness value corresponding with the input GTG, determine the gray scale compensation value of the input GTG.
The gray scale compensation device of 17. display floaters according to claim 16, it is characterised in that the compensation formula determines
Unit includes：
Compensation formula determination subelement, for according to the m groups input GTG and with the input corresponding brightness value of GTG, really
Make the coefficient A of following compensation formulam、Am-1……A1,
G=AmLm+Am-1Lm-1+L+A1L-GN,
Wherein, GNFor the input GTG of target area, L is and the input GTG GNCorresponding brightness value, G are the input ash
Rank GNGray scale compensation value, m be more than or equal to 2 less than or equal to 256 integer；
The first gray scale compensation value determining unit includes：
Middle gray scale compensation value determination subelement, for basis and the input corresponding target brightness value of GTG and above-mentioned compensation
Formula, determines the input GTG GNMiddle gray scale compensation value；
Compensation subelement, for making the input GTG compensate according to the middle gray scale compensation value, the above-mentioned compensation of repetition
Process, after compensation, the brightness value of the target area is in the range of target brightness value corresponding with the input GTG；
Gray scale compensation value determination subelement, for by the brightness value of the target area positioned at the input corresponding mesh of GTG
When in mark range of luminance values, the GTG for actually entering is with the difference for being input into GTG as the gray scale compensation for being input into GTG
Value.
The gray scale compensation device of 18. display floaters according to claim 16 or 17, it is characterised in that include：
Gray scale compensation value matrix determining unit, for obtaining the GTG in the display floater all regions under the input GTG
Offset, to obtain the gray scale compensation value matrix of the display floater；
Second gray scale compensation value determining unit, for determining the display according to the gray scale compensation value matrix and two-dimensional interpolation method
The gray scale compensation value of each sub-pixel of panel.
The gray scale compensation device of 19. display floaters according to claim 12, it is characterised in that the acquisition module bag
Include：
Intrinsic brilliance value acquiring unit, if being a pixel region for the target area, obtains the pixel region
Intrinsic brilliance values of the sub-pixel under multiple input GTGs, with obtain be input into described in the least one set of the sub-pixel GTG and with
It is described to be input into the corresponding intrinsic brilliance value of GTG；
The determining module includes：
First gray scale compensation unit, if for the sub-pixel input GTG under intrinsic brilliance value beyond with the input
The corresponding target brightness value scope of GTG, and the intrinsic brilliance value of the sub-pixel is more than target corresponding with the input GTG
Brightness value, then deduct fixed value by the input GTG to obtain the GTG after the input gray scale compensation；
The sub-pixel is shown according to the GTG after compensation, the above-mentioned compensation process of repetition, until the reality of the sub-pixel it is bright
Angle value is located in the subject brightness range；
3rd gray scale compensation value determining unit, for the intrinsic brilliance value of the sub-pixel is located in the subject brightness range
When, the GTG for actually entering is defined as the gray scale compensation value for being input into GTG with the difference of the input GTG.
The gray scale compensation device of 20. display floaters according to claim 19, it is characterised in that the determining module is also wrapped
Include：
Second gray scale compensation unit, if for the sub-pixel input GTG under intrinsic brilliance value beyond with the input
The corresponding target brightness value scope of GTG, and the intrinsic brilliance value of the sub-pixel is less than target corresponding with the input GTG
Brightness value, then increase fixed value by the input GTG to obtain the GTG after the input gray scale compensation；
The sub-pixel is shown according to the GTG after compensation, the above-mentioned compensation process of repetition, until the reality of the sub-pixel it is bright
Angle value is located in the subject brightness range；
4th gray scale compensation value determining unit, for the intrinsic brilliance value of the sub-pixel is located in the subject brightness range
When, the GTG for actually entering is defined as the gray scale compensation value for being input into GTG with the difference of the input GTG.
The gray scale compensation device of 21. display floaters according to claim 19 or 20, it is characterised in that also include：
Expansion module, for according to interpolation algorithm, each gray scale compensation value extension by the sub-pixel under multiple input GTGs
It is the offset of the input GTG under 0 to 255 arbitrary input GTGs.
The gray scale compensation device of 22. display floaters according to claim 12, it is characterised in that include：
Light emitting module, for making the sub-pixel of same color light is sent in each pixel of the display floater while luminous；
Target brightness value determining module, for obtaining brightness value of all light emitting sub-pixels under input GTG, will be all luminous
The meansigma methodss of sub-pixel luminance values are defined as target brightness value of the target area under input GTG.
The gray scale compensation system of 23. a kind of display floaters, it is characterised in that include：Arbitrary described ash in claim 12-22
Rank compensation device, charge-coupled device camera and display floater.
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