CN109559683A - A kind of gray level compensation method of organic light emitting display panel, device and system - Google Patents
A kind of gray level compensation method of organic light emitting 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
Abstract
The embodiment of the invention discloses a kind of gray level compensation method of organic light emitting display panel, device and system, which comprises determining that brightness~grayscale formula of each packed-pixel unit；According to each objective cross brightness of the combination pixel unit under the first grayscale, objective cross colour code and the wherein target monochrome colour code of each color sub-pixel, target monochromatic brightness of each color sub-pixel under the first grayscale in each combination pixel unit is calculated；Calculate the corresponding target gray scale value of target monochromatic brightness of each color sub-pixel under the first grayscale and gray scale compensation value in packed-pixel unit.In the embodiment of the present invention, using packed-pixel unit as minimum unit, the gray scale compensation database of organic light emitting display panel is calculated, calculating process is simple and high-efficient, picture chromenence homogeneity is good after compensation, greatly reduces the picture photographing time, improves the computational efficiency of gray scale compensation data.
Description
Technical field
The present embodiments relate to display technology more particularly to a kind of gray level compensation method of organic light emitting display panel,
Device and system.
Background technique
Active matrix organic light-emitting diode (AMOLED, Active-matrix organic light emitting
Diode) display screen is to utilize the vapor deposition organic luminescent device OLED realization self-luminous on thin film transistor (TFT) tft array substrate circuit
And it carries out picture and shows.AMOLED display screen has low-power consumption, high contrast, wide colour gamut, wide viewing angle, wide operating temperature model
It encloses and the performance advantages such as the response time is fast, and there is foldable, rollable flexible form and be suitable for applying in flexibility
In display device.
In AMOLED display screen, when organic luminescent device is deposited on tft array substrate circuit, need that red is deposited respectively
Organic luminescent device R, green organic luminescent device G and organic light emitting device in blue color B, thus in technique it cannot be guaranteed that R,
G, the device performance of B is identical.If red organic luminescent device R in AMOLED display screen, green organic luminescent device G, with
And the device performance of organic light emitting device in blue color B has differences, then be easy to cause the picture chromenence of display screen inhomogenous.
Summary of the invention
The embodiment of the present invention provides a kind of gray level compensation method of organic light emitting display panel, device and system, to improve
The picture chromenence homogeneity of display screen.
In a first aspect, the embodiment of the invention provides a kind of gray level compensation method of organic light emitting display panel, the grayscale
Compensation method includes:
According to combination brightness of each combination pixel unit of the organic light emitting display panel under at least three grayscale, group
Close colour code and the wherein target monochrome colour code of each color sub-pixel, determine the brightness of each packed-pixel unit~
Grayscale formulaWherein, the organic light emitting display panel includes multiple packed-pixel lists
Member, the packed-pixel unit is the picture element matrix that a*b pixel is constituted and a, b are all larger than or are equal to 1, and the pixel includes more
The sub-pixel of a different colours, Y are monochromatic brightness of the sub-pixel under gray grayscale, and A is the sub-pixel in 255 grayscale
Under monochromatic brightness, γ be gamma curve coefficient, Y0For monochromatic brightness of the predetermined sub-pixel under 0 grayscale；
According to objective cross brightness of each packed-pixel unit under first grayscale, objective cross colour code, with
And the wherein target monochrome colour code of each color sub-pixel, each color sub-pixel is calculated in each packed-pixel unit in institute
State the target monochromatic brightness under the first grayscale；
According to the brightness of the packed-pixel unit~grayscale formulaCalculate the combination
The corresponding target gray scale value of target monochromatic brightness of each color sub-pixel under first grayscale and grayscale in pixel unit
Offset.
Second aspect, the embodiment of the invention also provides a kind of gray scale compensation device of organic light emitting display panel, the ashes
Rank compensation device includes:
Brightness~grayscale formula determining module, for being existed according to each combination pixel unit of the organic light emitting display panel
Combination brightness under at least three grayscale, combination colour code and the wherein target monochrome colour code of each color sub-pixel, determine every
Brightness~grayscale formula of a packed-pixel unitWherein, the organic light emitting display
Panel includes multiple packed-pixel units, and the packed-pixel unit is the picture element matrix that a*b pixel is constituted and a, b are equal
More than or equal to 1, the pixel includes the sub-pixel of multiple and different colors, and Y is monochrome of the sub-pixel under gray grayscale
Brightness, A are monochromatic brightness of the sub-pixel under 255 grayscale, and γ is gamma curve coefficient, Y0For the predetermined son
Monochromatic brightness of the pixel under 0 grayscale；
Monochromatic brightness computing module, for the objective cross according to each packed-pixel unit under first grayscale
Brightness, objective cross colour code and the wherein target monochrome colour code of each color sub-pixel calculate each packed-pixel unit
Target monochromatic brightness of the interior each color sub-pixel under first grayscale；
Gray scale compensation computing module, for brightness~grayscale formula according to the packed-pixel unitCalculate mesh of each color sub-pixel under first grayscale in the packed-pixel unit
Mark the corresponding target gray scale value of monochromatic brightness and gray scale compensation value.
The third aspect, the embodiment of the invention also provides a kind of gray scale compensation system, which includes as above
Gray scale compensation device, colorimeter, display test module and the organic light emitting display panel；
The colorimeter is used to shoot the picture of the organic light emitting display panel and acquires data, and the data of acquisition are passed
Transport to the gray scale compensation device；
The white picture of grayscale needed for the display test module is used to that the organic light emitting display panel to be made to show.
In the embodiment of the present invention, determines brightness~grayscale formula of each packed-pixel unit, calculate each packed-pixel list
Target monochromatic brightness of each color sub-pixel under the first grayscale in member finally calculates each color in packed-pixel unit
The corresponding target gray scale value of target monochromatic brightness of the pixel under the first grayscale and gray scale compensation value, this makes it possible to obtain organic light emissions
The gray scale compensation database of display panel.Using packed-pixel unit as minimum unit in the embodiment of the present invention, it is calculated organic
The gray scale compensation database of light emitting display panel, calculating process is simple and high-efficient, and organic light emitting display panel is with packed-pixel
Unit is that minimum unit carries out gray scale compensation, and picture chromenence homogeneity is good after compensation, greatly reduces the picture photographing time, is improved
The computational efficiencies of gray scale compensation data.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing does one and simply introduces, it should be apparent that, drawings in the following description are some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is the flow chart of the gray level compensation method of organic light emitting display panel provided in an embodiment of the present invention；
Fig. 2~Fig. 4 is the schematic diagram of packed-pixel unit provided in an embodiment of the present invention；
Fig. 5 is the flow chart of the gray level compensation method of organic light emitting display panel provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram of the gray scale compensation device of organic light emitting display panel provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, hereinafter with reference to attached in the embodiment of the present invention
Figure, clearly and completely describes technical solution of the present invention by embodiment, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Refering to what is shown in Fig. 1, the process of the gray level compensation method for organic light emitting display panel provided in an embodiment of the present invention
Figure.Gray level compensation method provided in this embodiment can be executed by gray scale compensation device, gray scale compensation device can be used software and/
Or the mode of hardware is realized, and is configured and applied in gray scale compensation system.
The gray level compensation method of organic light emitting display panel provided in this embodiment includes:
It is step 110, bright according to combination of each combination pixel unit of organic light emitting display panel under at least three grayscale
Degree, combination colour code and the wherein target monochrome colour code of each color sub-pixel, determine the brightness of each packed-pixel unit~
Grayscale formulaWherein, organic light emitting display panel includes multiple packed-pixel units, combines picture
Plain unit is the picture element matrix that a*b pixel is constituted and a, b are all larger than or are equal to 1, and pixel includes the sub- picture of multiple and different colors
Element, Y are monochromatic brightness of the sub-pixel under gray grayscale, and A is monochromatic brightness of the sub-pixel under 255 grayscale, and γ is that gamma is bent
Linear system number, Y0For monochromatic brightness of the predetermined sub-pixel under 0 grayscale.
As described above, sub-pixel is the organic luminescent device in organic light emitting display panel, pixel includes multiple and different
The sub-pixel of color.Under normal conditions, the organic luminescent device of organic light emitting display panel is divided into red organic hair according to color
Optical device R, green organic luminescent device G and organic light emitting device in blue color B then include a red organic light emission in a pixel
Device, that is, R sub-pixel, a green organic luminescent device, that is, G sub-pixel and an organic light emitting device in blue color, that is, B sub-pixel, have
Machine light emitting display panel includes the multiple pixels being arranged in array.Packed-pixel unit includes that a row * b arranges the picture that a pixel is constituted
Prime matrix, multiple pixels of organic light emitting display panel are divided into multiple packed-pixel units, i.e. packed-pixel unit is by more
The picture element matrix that the pixel of a adjacent row/column is constituted.Such as a=b=1, i.e. the group in organic light emitting display panel as shown in Figure 2
Closing pixel unit 10 includes 1 pixel；A=b=3, i.e. the packed-pixel unit 10 in organic light emitting display panel as shown in Figure 3
The picture element matrix constituted for 3*3 pixel；A=3 and b=2, the i.e. packed-pixel in organic light emitting display panel as shown in Figure 4
Unit 10 is the picture element matrix that 3*2 pixel is constituted.
It should be noted that the pixel arrangement of organic light emitting display panel includes but is not limited to shown in Fig. 2~Fig. 4, it is existing
Any one pixel arrangement mode of organic light emitting display panel each falls within protection scope of the present invention.On the other hand, You Jifa
The packed-pixel unit of light display panel identical can also be different；Such as first packed-pixel unit be 2*2 picture
The picture element matrix that element is constituted, organic light emitting display panel are made of the multiple first packed-pixel units being arranged in array；Such as
First packed-pixel unit is the picture element matrix that 2*2 pixel is constituted, and the second packed-pixel unit is the picture that 2*3 pixel is constituted
Prime matrix, organic light emitting display panel are made of multiple first packed-pixel units and multiple second packed-pixel units.
When known manufacture organic light emitting display panel, the organic light emission of different colours is deposited on tft array substrate circuit
When device, it cannot be guaranteed that the performance of different colours device is identical in technique, therefore organic light emitting display panel shows certain
It may light and shade difference, coloration unevenness when the white picture of one grayscale.It is single with packed-pixel unit when carrying out gray scale compensation herein
Position determines brightness~grayscale relationship of each combination pixel unit in order to accurately carry out gray scale compensation.Known any pixel it is bright
Degree~grayscale formula meetsWherein, the A and γ of different pixels may be different, it is thus determined that group
Brightness~grayscale the relationship for closing pixel unit be A in brightness~grayscale formula of the determining packed-pixel unit and γ with
The functional relation of the brightness of the packed-pixel unit and grayscale out carries out gray scale compensation convenient for accurate.
Specifically, selected at least three grayscale (such as the grayscale value of three selected grayscale is respectively 50,100,200),
When organic light emitting display panel shows the white picture of 50 grayscale values, gray scale compensation device passes through camera shooting picture and passes through coloration
Meter acquires the combination brightness respectively combined in organic light emitting display panel pixel unit under 50 grayscale values, combination colour code, Yi Jiqi
The target monochrome colour code of middle each color sub-pixel can determine each color in each packed-pixel unit according to colorimetry principle
Monochromatic brightness of the pixel in 50 grayscale values；And so on, organic light emitting display panel shows the white picture of at least three selected grayscale
When face, the monochrome that each color sub-pixels of each packed-pixel unit under at least three grayscale can be obtained in gray scale compensation device is bright
Degree.
For any combination pixel unit, choose the first color sub-pixels in the packed-pixel unit, meet brightness~
Grayscale formula, by taking 50 grayscale values as an example, i.e. Y be equal to calculated first color sub-pixels 50 grayscale values monochromatic brightness,
Gray is known 50 grayscale value, Y0Be chosen as fixed value 0, it is concluded that the first color sub-pixels 50 grayscale values brightness~ash
Rank formula；And so on, according to monochrome of first color sub-pixels under at least three selected grayscale in the packed-pixel unit
The packed-pixel unit corresponding A and γ can be calculated in brightness, that is, determines that brightness~grayscale of the packed-pixel unit is public
Formula.It should be noted that optional Y in the present embodiment0It is 0, also optional organic light emitting display panel is in 0 ash in other embodiments
Brightness value under rank is Y0, for an organic light emitting display panel, Y0It, can be known or logical by presetting for datum
It is known after measuring in advance.
Such as three grayscale are chosen, the first color sub- picture in a packed-pixel unit is chosen in respectively 50,100 and 200
Element is R sub-pixel, then calculates monochromatic brightness of the R sub-pixel in 50 grayscale of the packed-pixel unit, in the monochromatic bright of 100 grayscale
Degree and 200 grayscale monochromatic brightness, according toThe bright of the packed-pixel unit is calculated
Degree~grayscale formula.
According to the brightness of packed-pixel unit each in organic light emitting display panel~grayscale formula, to organic light emitting display
Panel carries out gray scale compensation, can accurately realize gray scale compensation, improve the white picture chromenence homogeneity of organic light emitting display panel,
The influence for avoiding technique and evaporated device from generating the gray scale compensation of organic light emitting display panel, improves gray scale compensation efficiency.
Step 120, according to each objective cross brightness of the combination pixel unit under the first grayscale, objective cross colour code, with
And the wherein target monochrome colour code of each color sub-pixel, it is grey first to calculate each color sub-pixel in each combination pixel unit
Target monochromatic brightness under rank.
As described above, brightness and colour code of each pixel of organic light emitting display panel under same grayscale are equal, then have
The picture chromenence homogeneity of machine light emitting display panel is good.Therefore object brightness of the organic light emitting display panel under the first grayscale and
Target colour code is the objective cross brightness of each packed-pixel unit and objective cross colour code in organic light emitting display panel.Ash
Rank compensation device obtains the target monochrome color of each color sub-pixel in each combination pixel unit of organic light emitting display panel again
Each packed-pixel unit can be calculated according to brightness~grayscale formula of colorimetry principle and each combination pixel unit in mark
Target monochromatic brightness of the interior each color sub-pixel under the first grayscale.It is any one in 0-255 grayscale in this first grayscale
A grayscale value, such as the grayscale value of optional first grayscale is optional first ash in 10 or one embodiment in one embodiment
The grayscale value of rank is that the grayscale value of optional first grayscale in 20 or one embodiment is 30, etc..
In the present embodiment, object brightness and aim colour of the optional organic light emitting display panel under the first grayscale are designated as organic
The combination brightness of the packed-pixel unit of the central area of light emitting display panel and combination colour code, it is also optional in other embodiments
Object brightness and aim colour of the organic light emitting display panel under the first grayscale are designated as at least two of organic light emitting display panel
The combination average brightness and combination colour code average value of packed-pixel unit, it is also optional according to display needs in other embodiments
Reasonable set organic light emitting display panel object brightness and target colour code under the first grayscale, in the present invention without specifically limiting
It is fixed.
Step 130, brightness~grayscale formula according to packed-pixel unitCalculate combination
The corresponding target gray scale value of target monochromatic brightness of each color sub-pixel under the first grayscale and gray scale compensation in pixel unit
Value.
As described above, according to the brightness of step 110 known combination pixel unit~grayscale formula, according to known to step 120
Target monochromatic brightness of each color sub-pixel under the first grayscale in packed-pixel unit, then can be calculated the combination picture
Each color sub-pixel target gray scale value and gray scale compensation corresponding to the target monochromatic brightness under the first grayscale in plain unit
Value.For example, the grayscale value of the first grayscale is chosen as 50, target monochromatic brightness institute of the R sub-pixel under 50 grayscale values is calculated
Corresponding target gray scale value is 52, then the difference (52-50=2) of the target gray scale value and the first grayscale is the packed-pixel list
Gray scale compensation value of the R sub-pixel of member in 50 grayscale values；And so on, G, B sub-pixel of packed-pixel unit are obtained first
Target gray scale value and gray scale compensation value under grayscale.And so on, when the first grayscale is different grayscale values, available combination picture
Gray scale compensation data of each color sub-pixel of plain unit under 256 grayscale (0-255), correspondingly, available organic
The gray scale compensation data of each packed-pixel unit in light emitting display panel, and establish the gray scale compensation of organic light emitting display panel
Database.It is organic when gray scale compensation by the gray scale compensation database purchase of foundation in the memory of organic light emitting display panel
The display chip of light emitting display panel according to gray scale compensation database stored in memory to each packed-pixel unit into
Row gray scale compensation.
It should be noted that under the first grayscale, according to gray scale compensation database, to the R picture in packed-pixel unit
Element compensates, the G sub-pixel in packed-pixel unit is compensated and to the B sub-pixel in packed-pixel unit into
Row compensation, then brightness of the packed-pixel unit under the first grayscale is objective cross brightness and objective cross colour code, corresponding benefit
Each packed-pixel unit is repaid, then brightness of each packed-pixel unit of organic light emitting display panel under the first grayscale is mesh
Mark brightness and target colour code.The picture chromenence homogeneity of organic light emitting display panel is excellent at this time.
In the present embodiment, brightness~grayscale formula of each packed-pixel unit is determined, calculate in each combination pixel unit
Target monochromatic brightness of each color sub-pixel under the first grayscale finally calculates each color sub-pixel in packed-pixel unit
The corresponding target gray scale value of target monochromatic brightness and gray scale compensation value under the first grayscale, this makes it possible to obtain organic light emitting displays
The gray scale compensation database of panel.Using packed-pixel unit as minimum unit in the present embodiment, organic light emitting display is calculated
The gray scale compensation database of panel, calculating process is simple and high-efficient, and organic light emitting display panel is most with packed-pixel unit
Junior unit carries out gray scale compensation, and picture chromenence homogeneity is good after compensation, greatly reduces the picture photographing time, improves grayscale benefit
Repay the computational efficiency of data.
Optionally, in step 110 determine packed-pixel unit in each color sub-pixel target monochrome colour code it is specific
Implementation procedure includes:
Step 1: obtaining i-th of first colors in packed-pixel unit under the first grayscale for the first color sub-pixels
The monochromatic colour code Pi (xi, yi, zi) of sub-pixel.
As described above, passing through camera and colorimeter pair when organic light emitting display panel shows the white picture under the first grayscale
The picture of organic light emitting display panel is shot and is acquired the data of the picture of shooting so that the data of acquisition are transmitted to grayscale
Compensation device carries out operation.Specifically, colorimeter can acquire the packed-pixel unit of organic light emitting display panel in the first grayscale
Under combination brightness and combination colour code, and each color sub-pixel can also be collected in packed-pixel unit in the first grayscale
Under monochromatic colour code.Herein by taking the first color sub-pixels as an example, colorimeter shooting picture is simultaneously directly acquired in packed-pixel unit
Monochromatic colour code of each first color sub-pixels under the first grayscale, wherein include n pixel in packed-pixel unit, accordingly
Packed-pixel unit in include n the first color sub-pixels, wherein the monochromatic colour code of i-th of first color sub-pixels is labeled as
Pi(xi,yi,zi).The first grayscale is some selected grayscale value herein.
Step 2: the average value of the monochromatic colour code of the first color sub-pixels in packed-pixel unit is determined as packed-pixel
The target monochrome colour code Pm (xm, ym, zm) of first color sub-pixels in unit,
Wherein, i=1,2 ..., n, n are the number of the first color sub-pixels in packed-pixel unit.
As described above, gray scale compensation device can obtain the monochrome of each sub-pixel in packed-pixel unit by colorimeter
Colour code.X colour code xm in packed-pixel unit in the target monochrome colour code of the first color sub-pixels is n in packed-pixel unit
The average value of the x colour code of first color sub-pixels, i.e.,Correspondingly, packed-pixel can be obtained
Y colour code ym and z colour code zm in unit in the target monochrome colour code of the first color sub-pixels, the i.e. target of the first color sub-pixels
Monochromatic colour code is Pm (xm, ym, zm).And so on, the target that each color sub-pixel in packed-pixel unit can be obtained is monochromatic
Colour code.
It should be noted that under different grayscale, the target monochrome colour code phase of the first color sub-pixels in same packed-pixel
Together, i.e., gray scale compensation device determine under the first grayscale combine pixel unit in the first color sub-pixels target monochrome colour code after,
The target monochrome colour code of first color sub-pixels is target monochrome colour code of its affiliated packed-pixel unit under any grayscale.
Optionally, brightness~grayscale formula of packed-pixel unit is determined in step 110
Include:
Step 1: according to combination brightness of the packed-pixel unit under the first grayscale, combination colour code and wherein every kind of face
The target monochrome colour code of sub-pixels calculates every in packed-pixel unit according to formula (1)~formula (4) of colorimetry principle
Monochromatic brightness of the kind color sub-pixels under first grayscale,
X=L*x/y, Y=L, Z=L*z/y (1)
Xw=Lw*xw/yw, Yw=Lw, Zw=Lw*zw/yw (2)
Xw=Xr+Xg+Xb, Yw=Yr+Yg+Yb, Zw=Zr+Zg+Zb (3)
Xr=Lr*xr/yr, Yr=Lr, Zr=Lr*zr/yr, Xg=Lg*xg/yg, Yg=Lg, Zg=Lg*zg/yg, Xb
=Lb*xb/yb, Yb=Lb, Zb=Lb*zb/yb (4)
Wherein, X, Y, Z are the tristimulus values under colour code, and L is brightness, and x, y, z is colour code, and the combination of packed-pixel unit is bright
Degree is that Yw and combined color are designated as W (xw, yw, zw), and the target monochrome colour code of red sub-pixel R is R in packed-pixel unit
The target monochrome colour code of (xr, yr, zr), green sub-pixels G are the target monochrome color of G (xg, yg, zg) and blue subpixels B
It is designated as B (xb, yb, zb), the monochromatic brightness of red sub-pixel R is the monochromatic brightness of Lr, green sub-pixels G in packed-pixel unit
Monochromatic brightness for Lg and blue subpixels B is Lb, z=1-x-y.
As described above, it is X=L*x/y, Y=L, Z=L*z/y that colorimetry principle, which is formula (1), wherein X, Y, Z are colour code
Under tristimulus values, L is brightness, and x, y, z is colour code.The colorimetry formula is suitable for the brightness of sub-pixel and colour code calculates,
Brightness and colour code suitable for pixel calculate, and the brightness and colour code for being also applied for packed-pixel unit calculate.
As described above, gray scale compensation device passes through color when organic light emitting display panel shows the white picture under the first grayscale
Degree meter can get combination brightness Yw of the packed-pixel unit under the first grayscale and combination colour code W (xw, yw, zw), it is clear that root
Formula (2) Xw=Lw*xw/yw, Yw=Lw, Zw=Lw*zw/yw can be obtained according to colorimetry principle formula (1).
As described above, gray scale compensation device, which also passes through colorimeter, gets in packed-pixel unit R sub-pixel in the first ash
Target monochrome colour code G (xg, yg, zg) under the first grayscale of target monochrome colour code R (xr, yr, gr), G sub-pixel under rank, with
And target monochrome colour code B (xb, yb, gb) of the B sub-pixel under the first grayscale, it is clear that can be obtained according to colorimetry principle formula (1)
To formula (4), i.e. the tristimulus values Xr=Lr*xr/yr, Yr=Lr, Zr=Lr*zr/yr of R sub-pixel, the tristimulus of G sub-pixel
The tristimulus values Xb=Lb*xb/yb, Yb=Lb, Zb=of value Xg=Lg*xg/yg, Yg=Lg, Zg=Lg*zg/yg, B sub-pixel
Lb*zb/yb。
And white light tristimulus values is the sum of the tristimulus values of each monochrome sub-pixels, i.e., colorimetry formula (3) is Xw=Xr+Xg
+ Xb, Yw=Yr+Yg+Yb, Zw=Zr+Zg+Zb.
It follows that according to above-mentioned formula (1)~(4) and known Yw, W (xw, yw, zw), R (xr, yr, gr), G
(xg, yg, zg) and B (xb, yb, gb), can be calculated monochrome of the R sub-pixel under the first grayscale in packed-pixel unit
The monochromatic brightness Lb of brightness Lr, G sub-pixel in monochromatic brightness Lg and the B sub-pixel under the first grayscale under the first grayscale.
Step 2: according to brightness~grayscale formulaWith every kind in the packed-pixel unit
Monochromatic brightness of the color sub-pixels under at least three grayscale, calculate A and γ with obtain the brightness of the packed-pixel unit~
Grayscale formula.
As mentioned above, it is known that monochromatic brightness Lr of the R sub-pixel under the first grayscale in packed-pixel unit, then the first grayscale
Grayscale value be brightness~grayscale formula gray value, Lr be brightness~grayscale formula Y, this makes it possible to obtain packed-pixel units
Brightness~grayscale equation of the middle R sub-pixel under the first grayscale.
Organic light emitting display panel shows the white picture under the second grayscale, then according to one~step 2 of above-mentioned steps, can obtain
Brightness~grayscale equation of the R sub-pixel under the second grayscale into packed-pixel unit.And so on, obtain packed-pixel unit
Brightness~grayscale equation of the middle R sub-pixel under third grayscale.First grayscale, the second grayscale and third grayscale are different.Root
According to brightness~grayscale equation of the R sub-pixel in packed-pixel unit under at least three grayscale, packed-pixel list can be calculated
A and γ in brightness~grayscale equation of member, known A and γ, which is substituted into brightness~grayscale formula, can be obtained packed-pixel list
Brightness~grayscale formula of member (A and γ is it is known that Y and gray are unknown at this time).
It in other embodiments, can also be bright under at least three grayscale according to G (or B) sub-pixel in packed-pixel unit
Brightness~grayscale formula of packed-pixel unit is calculated in degree~grayscale equation.
Optionally, each group is calculated in step 120 close target of each color sub-pixel under the first grayscale in pixel unit
The specific implementation procedure of monochromatic brightness are as follows: for any packed-pixel unit, according to the formula (1) of colorimetry principle~public affairs
Formula (4) calculates target monochromatic brightness of each color sub-pixel under the first grayscale in packed-pixel unit,
X=L*x/y, Y=L, Z=L*z/y (1)
Xw=Lw*xw/yw, Yw=Lw, Zw=Lw*zw/yw (2)
Xw=Xr+Xg+Xb, Yw=Yr+Yg+Yb, Zw=Zr+Zg+Zb (3)
Xr=Lr*xr/yr, Yr=Lr, Zr=Lr*zr/yr, Xg=Lg*xg/yg, Yg=Lg, Zg=Lg*zg/yg, Xb
=Lb*xb/yb, Yb=Lb, Zb=Lb*zb/yb (4)
Wherein, X, Y, Z are the tristimulus values under colour code, and L is brightness, and x, y, z is colour code, the target group of packed-pixel unit
Conjunction brightness is Yw and objective cross colour code is W (xw, yw, zw), and the target of red sub-pixel R is monochromatic in packed-pixel unit
The mesh that colour code is R (xr, yr, zr), the target monochrome colour code of green sub-pixels G is G (xg, yg, zg) and blue subpixels B
Marking monochromatic colour code is B (xb, yb, zb), in packed-pixel unit the target monochromatic brightness of red sub-pixel R be Lr, the sub- picture of green
The target monochromatic brightness of plain G is Lg and the target monochromatic brightness of blue subpixels B is Lb, wherein z=1-x-y.
Known colorimetry formula (1)~(4), gray scale compensation device can get the objective cross of packed-pixel unit herein
Brightness is Yw and objective cross colour code is W (xw, yw, zw), the target monochrome color of red sub-pixel R in packed-pixel unit
It is designated as R (xr, yr, zr), the target that the target monochrome colour code of green sub-pixels G is G (xg, yg, zg) and blue subpixels B
Monochromatic colour code is B (xb, yb, zb), therefore target list of the R sub-pixel under the first grayscale in packed-pixel unit can be calculated
Colour brightness Lr, G sub-pixel are in target list of target monochromatic brightness Lg and the B sub-pixel under the first grayscale under the first grayscale
Colour brightness Lb.
It is illustrated in figure 5 a kind of gray level compensation method of organic light emitting display panel provided in an embodiment of the present invention, the ash
Rank compensation method and the difference of embodiment illustrated in fig. 1 are, further includes:
Step 140, brightness~grayscale formula according to packed-pixel unitCalculate combination
Target gray scale value and gray scale compensation value of each color sub-pixel under the second grayscale and under third grayscale in pixel unit.
Step 150 calculates target of each color sub-pixel under the 4th grayscale in packed-pixel unit according to formula (5)
Grayscale value and gray scale compensation value；G4m=Gjm+ (G4-Gj) * (Gkm-Gjm)/(Gk-Gj) (5), wherein G4m is packed-pixel list
Target gray scale value of first color sub-pixels under the 4th grayscale in member, Gjm are the first color sub-pixels in packed-pixel unit
Target gray scale value under jth grayscale, G4 are the grayscale value of the 4th grayscale, and Gj is the grayscale value of jth grayscale, and Gkm is combination picture
Target gray scale value of first color sub-pixels under kth grayscale in plain unit, Gk be kth grayscale grayscale value, k ≠ j, 3 >=j >=
1,3 >=k >=1, Gj≤G4≤Gk.
Exist as described above, each color sub-pixel in packed-pixel unit can be calculated according to step 110~step 130
Target gray scale value corresponding to target monochromatic brightness under first grayscale and gray scale compensation value.And so on, calculate combination picture
Each color sub-pixel target gray scale value corresponding to the target monochromatic brightness under the second grayscale and third grayscale in plain unit
With gray scale compensation value, wherein the first grayscale, the second grayscale and third grayscale are different, the first grayscale, the second grayscale and third
Grayscale is three selected different grayscale values, such as the grayscale value of optional first grayscale is that the grayscale value of the 60, second grayscale is
120 and third grayscale grayscale value be 240 it is perhaps optional be respectively 50,100,200 or to be chosen as other, in this hair
The grayscale value of the first grayscale, the second grayscale and third grayscale is not limited in bright.
After obtaining the related gray scale compensation data of three selected grayscale, using internal difference or grayscale heterodyne between compensation grayscale
Other available grayscale of mode gray scale compensation data, without repeating step 120~step 130 with obtain other ash
The gray scale compensation data of rank.
Specifically, calculating target of each color sub-pixel under the 4th grayscale in packed-pixel unit according to formula (5)
Grayscale value and gray scale compensation value；G4m=Gjm+ (G4-Gj) * (Gkm-Gjm)/(Gk-Gj) (5).
For example, the grayscale value of the first grayscale is 50, the grayscale value of the second grayscale is 100, and the grayscale value of third grayscale is
200, the grayscale value of the 4th grayscale is 80.R/G/B target gray scale value under three grayscale is respectively as follows: in one packed-pixel unit
R-52/102/201, G-52/102/202, B-51/101/200,
Then target gray scale value of the packed-pixel unit under 80 grayscale values is
R:G4m=52+ (80-50) * (102-52)/(100-50)=82；
G:G4m=52+ (80-50) * (102-52)/(100-50)=82；
B:G4m=51+ (80-50) * (101-51)/(100-50)=81.
Obviously, the grayscale value (80) of the 4th grayscale is between the first grayscale and the second grayscale, then jth grayscale is the first ash
Rank, kth grayscale is the second grayscale, therefore Gjm is target of first color sub-pixels under the first grayscale in packed-pixel unit
Grayscale value (i.e. R/G-Gjm=52, B-Gjm=51)；It is 50, Gkm is packed-pixel list that Gj, which is the grayscale value of the first grayscale,
Target gray scale value of first color sub-pixels under the second grayscale is (R/G-Gkm=102, B-Gkm=101) in member, and Gk is
The grayscale value of second grayscale is 100.
And so on, each color sub-pixel of packed-pixel unit can be directly obtained in 256 ashes according to formula (5)
Gray scale compensation data under rank (0-255), correspondingly, each packed-pixel unit in available organic light emitting display panel
Gray scale compensation data, and establish the gray scale compensation database of organic light emitting display panel.By the gray scale compensation data inventory of foundation
Storage is in the memory of organic light emitting display panel, and when gray scale compensation, the display chip of organic light emitting display panel is according to storage
Gray scale compensation database in memory carries out gray scale compensation to each packed-pixel unit.
Difference with above-described embodiment is, is only needed under at least three selected grayscale in the present embodiment, acquisition group
Close the gray scale compensation data of each color sub-pixels in pixel unit, it will be able to which other grayscale the following groups are derived from according to formula (5)
The gray scale compensation data of each color sub-pixels in pixel unit are closed, calculating process is simple, greatly reduces gray scale compensation data
Calculate the time.
Refering to what is shown in Fig. 6, the signal of the gray scale compensation device for organic light emitting display panel provided in an embodiment of the present invention
Figure.Gray level compensation method described in above-mentioned any embodiment, gray scale compensation can be performed in gray scale compensation device provided in this embodiment
The mode that software and/or hardware can be used in device is realized, and is configured and applied in gray scale compensation system.
The gray scale compensation device of organic light emitting display panel provided in this embodiment includes: that brightness~grayscale formula determines mould
Block 210, monochromatic brightness computing module 220 and gray scale compensation computing module 230.
Wherein, brightness~grayscale formula determining module 210 is used for each combination picture according to the organic light emitting display panel
Combination brightness of the plain unit under at least three grayscale, combination colour code and the wherein target monochrome color of each color sub-pixel
Mark, determines brightness~grayscale formula of each packed-pixel unitWherein, described organic
Light emitting display panel includes multiple packed-pixel units, and the packed-pixel unit is the pixel square that a*b pixel is constituted
Battle array and a, b are all larger than or are equal to 1, and the pixel includes the sub-pixel of multiple and different colors, and Y is the sub-pixel in gray grayscale
Under monochromatic brightness, A be monochromatic brightness of the sub-pixel under 255 grayscale, γ be gamma curve coefficient, Y0It is predetermined
Monochromatic brightness of the sub-pixel under 0 grayscale；Monochromatic brightness computing module 220 is used for according to each packed-pixel unit
The target of objective cross brightness, objective cross colour code under first grayscale and wherein each color sub-pixel is monochromatic
Colour code calculates target monochromatic brightness of each color sub-pixel under first grayscale in each packed-pixel unit；Ash
Rank compensation calculation module 230 is used for brightness~grayscale formula according to the packed-pixel unitCalculate mesh of each color sub-pixel under first grayscale in the packed-pixel unit
Mark the corresponding target gray scale value of monochromatic brightness and gray scale compensation value.
Optionally, brightness~grayscale formula determining module 210 includes monochromatic colour code determination unit.
Monochromatic colour code determination unit is used for, and for the first color sub-pixels, obtains the combination under first grayscale
The monochromatic colour code Pi (xi, yi, zi) of i-th of first color sub-pixels in pixel unit；It will be in the packed-pixel unit
The average value of the monochromatic colour code of first color sub-pixels is determined as the first color sub- picture described in the packed-pixel unit
The target monochrome colour code Pm (xm, ym, zm) of element,
Wherein, i=1,2 ..., n, n are the number of the first color sub-pixels described in the packed-pixel unit.
Optionally, brightness~grayscale formula determining module 210 includes formula computing unit.
Formula computing unit is used for, according to combination brightness of the packed-pixel unit under the first grayscale, combination colour code,
And the wherein target monochrome colour code of each color sub-pixel calculates institute according to formula (1)~formula (4) of colorimetry principle
State monochromatic brightness of each color sub-pixel under first grayscale in packed-pixel unit；
According to brightness~grayscale formulaWith each color in the packed-pixel unit
Monochromatic brightness of the pixel under at least three grayscale, it is public to obtain brightness~grayscale of the packed-pixel unit to calculate A and γ
Formula；
Wherein, X=L*x/y, Y=L, Z=L*z/y (1)
Xw=Lw*xw/yw, Yw=Lw, Zw=Lw*zw/yw (2)
Xw=Xr+Xg+Xb, Yw=Yr+Yg+Yb, Zw=Zr+Zg+Zb (3)
Xr=Lr*xr/yr, Yr=Lr, Zr=Lr*zr/yr, Xg=Lg*xg/yg, Yg=Lg, Zg=Lg*zg/yg, Xb
=Lb*xb/yb, Yb=Lb, Zb=Lb*zb/yb (4)
Wherein, X, Y, Z are the tristimulus values under colour code, and L is brightness, and x, y, z is colour code, the group of the packed-pixel unit
Closing brightness is that Yw and combined color are designated as W (xw, yw, zw), and the target of red sub-pixel R is monochromatic in the packed-pixel unit
The mesh that colour code is R (xr, yr, zr), the target monochrome colour code of green sub-pixels G is G (xg, yg, zg) and blue subpixels B
Marking monochromatic colour code is B (xb, yb, zb), in the packed-pixel unit monochromatic brightness of red sub-pixel R be Lr, the sub- picture of green
The monochromatic brightness of plain G is Lg and the monochromatic brightness of blue subpixels B is Lb, z=1-x-y.
Optionally, monochromatic brightness computing module 220 is specifically used for, for any packed-pixel unit, according to coloration
Formula (the 1)~formula (4) for learning principle calculates in the packed-pixel unit each color sub-pixel under first grayscale
Target monochromatic brightness,
X=L*x/y, Y=L, Z=L*x/y (1)
Xw=Lw*xw/yw, Yw=Lw, Zw=Lw*zw/yw (2)
Xw=Xr+Xg+Xb, Yw=Yr+Yg+Yb, Zw=Zr+Zg+Zb (3)
Xr=Lr*xr/yr, Yr=Lr, Zr=Lr*zr/yr, Xg=Lg*xg/yg, Yg=Lg, Zg=Lg*zg/yg, Xb
=Lb*xb/yb, Yb=Lb, Zb=Lb*zb/yb (4)
Wherein, X, Y, Z are the tristimulus values under colour code, and L is brightness, and x, y, z is colour code, the mesh of the packed-pixel unit
Mark combination brightness is Yw and objective cross colour code is W (xw, yw, zw), red sub-pixel R in the packed-pixel unit
Target monochrome colour code is R (xr, yr, zr), the target monochrome colour code of green sub-pixels G is G (xg, yg, zg) and the sub- picture of blue
The target monochrome colour code of plain B is B (xb, yb, zb), and the target monochromatic brightness of red sub-pixel R is in the packed-pixel unit
Lr, green sub-pixels G target monochromatic brightness be Lg and the target monochromatic brightness of blue subpixels B is Lb, wherein z=1-
x-y。
Optionally, Y0=0.
Optionally, the gray scale compensation device further include: grey scale computing module, for according to the packed-pixel unit
Brightness~grayscale formulaEach color sub-pixel is calculated in the packed-pixel unit second
Target gray scale value and gray scale compensation value under grayscale and under third grayscale；It is calculated in the packed-pixel unit according to formula (5)
Target gray scale value and gray scale compensation value of each color sub-pixel under the 4th grayscale；G4m=Gjm+ (G4-Gj) * (Gkm-
Gjm)/(Gk-Gj) (5),
Wherein, G4m is target gray scale value of first color sub-pixels under the 4th grayscale in the packed-pixel unit,
Gjm is target gray scale value of first color sub-pixels under jth grayscale in the packed-pixel unit, and G4 is the ash of the 4th grayscale
Rank value, Gj are the grayscale value of jth grayscale, and Gkm is mesh of first color sub-pixels under kth grayscale in the packed-pixel unit
Grayscale value is marked, Gk is the grayscale value of kth grayscale, k ≠ j, 3 >=j >=1,3 >=k >=1, Gj≤G4≤Gk.
In the present embodiment, brightness~grayscale formula of each packed-pixel unit is determined, calculate in each combination pixel unit
Target monochromatic brightness of each color sub-pixel under the first grayscale finally calculates each color sub-pixel in packed-pixel unit
The corresponding target gray scale value of target monochromatic brightness and gray scale compensation value under the first grayscale, this makes it possible to obtain organic light emitting displays
The gray scale compensation database of panel.Using packed-pixel unit as minimum unit in the present embodiment, organic light emitting display is calculated
The gray scale compensation database of panel, calculating process is simple and high-efficient, and organic light emitting display panel is most with packed-pixel unit
Junior unit carries out gray scale compensation, and picture chromenence homogeneity is good after compensation.
The embodiment of the invention also provides a kind of gray scale compensation system, which includes any embodiment as above
Gray scale compensation device, colorimeter, display test module and the organic light emitting display panel；Colorimeter has for shooting
The picture of machine light emitting display panel simultaneously acquires data, and the data of acquisition are transmitted to gray scale compensation device；Show that test module is used
The white picture of the grayscale needed for showing organic light emitting display panel.
The gray scale compensation system is using one or more pixels as packed-pixel unit (R, G, B)a*b, wherein a, b be all larger than or
Equal to 1, the white picture of grayscale needed for control display test module shows organic light emitting display panel, and pass through camera and coloration
Meter shooting picture simultaneously acquires data, calculates gray scale compensation data by gray scale compensation device, the gray scale compensation data of acquisition are deposited
It stores up in the memory of organic light emitting display panel, display chip is according to the gray scale compensation database stored in memory to organic
The packed-pixel unit of light emitting display panel carries out gray scale compensation, so that each combination pixel unit of organic light emitting display panel exists
Same grayscale shows identical brightness and coloration.Compared with the process that the sub-pixel one by one of the prior art is shot, drop significantly
The low picture photographing time, improve the computational efficiency of gray scale compensation data.
The gray scale compensation system is by grabbing each colour code for combining pixel unit, to organic light emitting display face under different grayscale
The combination brightness of plate and combination colour code are shot, and are analyzed and are calculated according to colorimetry principle and its formula, obtained each
The target gray scale value and gray scale compensation value of R sub-pixel, G sub-pixel and B sub-pixel under different grayscale in packed-pixel unit, this
Sample realizes gray scale compensation and sub-pixel in the case where shooting less picture with color adjustment, improve picture chromenence homogeneity and
Display brightness.
It should be noted that the gray scale compensation database that gray scale compensation system provided in this embodiment obtains is with 0-255
Grayscale is that range carries out gray scale compensation data acquisition, and in the present invention and not practical restrictions gray scale compensation range, the related people that obtains employment
The gray scale compensation system that member can provide according to embodiments of the present invention obtains the gray scale compensation database using 0-q as grey-scale range,
The numerical values recited of q is not limited in the present invention.
In this gray scale compensation system by taking a specific value as an example, the course of work of gray scale compensation system is described:
Step 1: being measured to the monochromatic colour code for R, G, B sub-pixel for respectively combining pixel unit under 100 grayscale；
Step 2: the combination brightness of each combination pixel unit to the gray scale picture of 50 grayscale, 100 grayscale and 200 grayscale
And combination colour code carries out shooting acquisition；
Pixel unit is combined under each grayscale in objective cross brightness and objective cross Step 3: calculating according to colorimetry principle
The gray scale compensation value of R/G/B pixel under colour code.
Step 4: be stored in after all gray scale compensation Value Datas are handled in the memory of organic light emitting display panel,
The memory can be integrated in organic light emitting display panel or be integrated in the driving chip of organic light emitting display panel or independence
Storage is in the electronic device.
For example, the monochromatic colour code of an optional packed-pixel unit be R (0.66,0.33,0.01), G (0.21,0.72,
0.07), (0.13,0.06,0.81) B, combination brightness and combined color of the packed-pixel unit under 200 grayscale are designated as
300nits and (0.295,0.315,0.39).Then according to colorimetry principle, monochromatic brightness in packed-pixel unit can be obtained and distinguish
For R:84.748nits, G:189.292nits, B:25.96nits.And so on, it calculates and combines picture under 50/100 grayscale
The luminance information of R/G/B in plain unit.It is fitted functional relation L=f (gray) i.e. brightness~grayscale formula of brightness and grayscale, according to
Show that R/G/B target gray scale value under three grayscale is respectively as follows: in packed-pixel unit after compensation according to what colorimetry principle calculated
R-52/102/201, G-52/102/202, B-51/101/200.
Then packed-pixel unit is in the target gray scale value of 80 grayscale
R:G4m=52+ (80-50) * (102-52)/(100-50)=82；
G:G4m=52+ (80-50) * (102-52)/(100-50)=82；
B:G4m=51+ (80-50) * (101-51)/(100-50)=81.
Other grayscale outside selected grayscale, are compensated by the way of internal difference or grayscale heterodyne between compensating grayscale.
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, be combined with each other and substitutes without departing from protection scope of the present invention.Therefore, although by above embodiments to this
Invention is described in further detail, but the present invention is not limited to the above embodiments only, is not departing from present inventive concept
In the case of, it can also include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (8)
1. a kind of gray level compensation method of organic light emitting display panel characterized by comprising
According to combination brightness of each combination pixel unit of the organic light emitting display panel under at least three grayscale, combined color
Mark and wherein the target monochrome colour code of each color sub-pixel, determine brightness~grayscale of each packed-pixel unit
FormulaWherein, the organic light emitting display panel includes multiple packed-pixel units, institute
State that packed-pixel unit is picture element matrix that a*b pixel is constituted and a, b are all larger than or equal to 1, the pixel include it is multiple not
With the sub-pixel of color, Y is monochromatic brightness of the sub-pixel under gray grayscale, and A is the sub-pixel under 255 grayscale
Monochromatic brightness, γ are gamma curve coefficient, Y0For monochromatic brightness of the predetermined sub-pixel under 0 grayscale；
According to objective cross brightness of each packed-pixel unit under the first grayscale, objective cross colour code and wherein every
It is grey described first to calculate each color sub-pixel in each packed-pixel unit for the target monochrome colour code of kind color sub-pixels
Target monochromatic brightness under rank；
According to the brightness of the packed-pixel unit~grayscale formulaCalculate the packed-pixel
The corresponding target gray scale value of target monochromatic brightness of each color sub-pixel under first grayscale and gray scale compensation in unit
Value.
2. gray level compensation method according to claim 1, which is characterized in that determine every kind of face in the packed-pixel unit
The specific implementation procedure of the target monochrome colour code of sub-pixels includes:
For the first color sub-pixels, i-th of first face in the packed-pixel unit is obtained under first grayscale
The monochromatic colour code Pi (xi, yi, zi) of sub-pixels；
The average value of the monochromatic colour code of first color sub-pixels described in the packed-pixel unit is determined as the combination picture
The target monochrome colour code Pm (xm, ym, zm) of first color sub-pixels described in plain unit,
Wherein, i=1,2 ..., n, n are the number of the first color sub-pixels described in the packed-pixel unit.
3. gray level compensation method according to claim 1, which is characterized in that determine the brightness of the packed-pixel unit~
Grayscale formulaInclude:
According to combination brightness of the packed-pixel unit under first grayscale, combination colour code and wherein each color
The target monochrome colour code of sub-pixel calculates in the packed-pixel unit according to formula (1)~formula (4) of colorimetry principle
Monochromatic brightness of each color sub-pixel under first grayscale；
According to brightness~grayscale formulaExist with each color sub-pixel in the packed-pixel unit
Monochromatic brightness under at least three grayscale calculates A and γ to obtain brightness~grayscale formula of the packed-pixel unit；
Wherein, X=L*x/y, Y=L, Z=L*z/y (1)
Xw=Lw*xw/yw, Yw=Lw, Zw=Lw*zw/yw (2)
Xw=Xr+Xg+Xb, Yw=Yr+Yg+Yb, Zw=Zr+Zg+Zb (3)
Xr=Lr*xr/yr, Yr=Lr, Zr=Lr*zr/yr, Xg=Lg*xg/yg, Yg=Lg, Zg=Lg*zg/yg, Xb=Lb*
Xb/yb, Yb=Lb, Zb=Lb*zb/yb (4)
Wherein, X, Y, Z are the tristimulus values under colour code, and L is brightness, and x, y, z is colour code, and the combination of the packed-pixel unit is bright
Degree is that Yw and combined color are designated as W (xw, yw, zw), the target monochrome colour code of red sub-pixel R in the packed-pixel unit
Target monochrome colour code for R (xr, yr, zr), green sub-pixels G is the target list of G (xg, yg, zg) and blue subpixels B
Color colour code is B (xb, yb, zb), in the packed-pixel unit monochromatic brightness of red sub-pixel R be Lr, green sub-pixels G
Monochromatic brightness is Lg and the monochromatic brightness of blue subpixels B is Lb, z=1-x-y.
4. gray level compensation method according to claim 1, which is characterized in that calculate in each packed-pixel unit every kind
The specific implementation procedure of target monochromatic brightness of the color sub-pixels under first grayscale are as follows:
The combination picture is calculated according to the formula (1) of colorimetry principle~formula (4) for any packed-pixel unit
Target monochromatic brightness of each color sub-pixel under first grayscale in plain unit,
X=L*x/y, Y=L, Z=L*z/y (1)
Xw=Lw*xw/yw, Yw=Lw, Zw=Lw*zw/yw (2)
Xw=Xr+Xg+Xb, Yw=Yr+Yg+Yb, Zw=Zr+Zg+Zb (3)
Xr=Lr*xr/yr, Yr=Lr, Zr=Lr*zr/yr, Xg=Lg*xg/yg, Yg=Lg, Zg=Lg*zg/yg, Xb=Lb*
Xb/yb, Yb=Lb, Zb=Lb*zb/yb (4)
Wherein, X, Y, Z are the tristimulus values under colour code, and L is brightness, and x, y, z is colour code, the target group of the packed-pixel unit
Conjunction brightness is Yw and objective cross colour code is W (xw, yw, zw), the target of red sub-pixel R in the packed-pixel unit
Monochromatic colour code is R (xr, yr, zr), the target monochrome colour code of green sub-pixels G is G (xg, yg, zg) and blue subpixels B
Target monochrome colour code be B (xb, yb, zb), in the packed-pixel unit target monochromatic brightness of red sub-pixel R be Lr,
The target monochromatic brightness of green sub-pixels G is Lg and the target monochromatic brightness of blue subpixels B is Lb, wherein z=1-x-
y。
5. gray level compensation method according to claim 1, which is characterized in that Y0It is 0.
6. gray level compensation method according to claim 1, which is characterized in that further include:
According to the brightness of the packed-pixel unit~grayscale formulaCalculate the packed-pixel
Target gray scale value and gray scale compensation value of each color sub-pixel under the second grayscale and under third grayscale in unit；
According to formula (5) calculate in the packed-pixel unit target gray scale value of each color sub-pixel under the 4th grayscale and
Gray scale compensation value；
G4m=Gjm+ (G4-Gj) * (Gkm-Gjm)/(Gk-Gj) (5),
Wherein, G4m is target gray scale value of first color sub-pixels under the 4th grayscale in the packed-pixel unit,
Gjm is target gray scale value of first color sub-pixels under jth grayscale in the packed-pixel unit, and G4 is the 4th grayscale
Grayscale value, Gj be the jth grayscale grayscale value, Gkm be the packed-pixel unit in the first color sub-pixels kth ash
Target gray scale value under rank, Gk are the grayscale value of the kth grayscale, k ≠ j, 3 >=j >=1,3 >=k >=1, Gj≤G4≤Gk.
7. a kind of gray scale compensation device of organic light emitting display panel characterized by comprising
Brightness~grayscale formula determining module, for each combination pixel unit according to the organic light emitting display panel at least
Combination brightness under three grayscale, combination colour code and the wherein target monochrome colour code of each color sub-pixel, determine each institute
State brightness~grayscale formula of packed-pixel unitWherein, the organic light emitting display panel
Including multiple packed-pixel units, the packed-pixel unit is the picture element matrix that a*b pixel is constituted and a, b are all larger than
Or it is equal to 1, the pixel includes the sub-pixel of multiple and different colors, and Y is monochromatic brightness of the sub-pixel under gray grayscale,
A is monochromatic brightness of the sub-pixel under 255 grayscale, and γ is gamma curve coefficient, Y0For the predetermined sub-pixel
Monochromatic brightness under 0 grayscale；
Monochromatic brightness computing module, for bright according to objective cross of each packed-pixel unit under first grayscale
Degree, objective cross colour code and the wherein target monochrome colour code of each color sub-pixel calculate in each packed-pixel unit
Target monochromatic brightness of each color sub-pixel under first grayscale；
Gray scale compensation computing module, for brightness~grayscale formula according to the packed-pixel unitCalculate mesh of each color sub-pixel under first grayscale in the packed-pixel unit
Mark the corresponding target gray scale value of monochromatic brightness and gray scale compensation value.
8. a kind of gray scale compensation system, which is characterized in that the gray scale compensation system includes gray scale compensation as claimed in claim 7
Device, colorimeter, display test module and organic light emitting display panel；
The colorimeter is used to shoot the picture of the organic light emitting display panel and acquires data, and the data of acquisition are transmitted to
The gray scale compensation device；
The white picture of grayscale needed for the display test module is used to that the organic light emitting display panel to be made to show.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010100A (en) * | 2019-05-10 | 2019-07-12 | 深圳市华星光电技术有限公司 | Image element driving method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103314405A (en) * | 2011-01-13 | 2013-09-18 | 夏普株式会社 | Gray-scale correction method for display device, and method of producing display device |
| CN104882098A (en) * | 2015-06-08 | 2015-09-02 | 广东威创视讯科技股份有限公司 | Image correction method based on LED splicing display screen and image sensor |
| CN105096890A (en) * | 2015-08-31 | 2015-11-25 | 深圳市华星光电技术有限公司 | White balance method of four-color pixel system |
| CN105529002A (en) * | 2014-09-30 | 2016-04-27 | 青岛海信信芯科技有限公司 | Method and device for determining luminance compensation coefficients |
| US20160267876A1 (en) * | 2015-03-13 | 2016-09-15 | Samsung Display Co., Ltd. | Data compensation device and display device including the same |
| CN106782307A (en) * | 2017-01-25 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | The gray level compensation method and gray scale compensation system of a kind of OLED display panel |
| CN106782303A (en) * | 2016-12-28 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | A kind of display bearing calibration of display panel, apparatus and system |
| CN107045863A (en) * | 2017-06-26 | 2017-08-15 | 惠科股份有限公司 | The GTG method of adjustment and device of a kind of display panel |
-
2017
- 2017-09-25 CN CN201710875031.5A patent/CN109559683A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103314405A (en) * | 2011-01-13 | 2013-09-18 | 夏普株式会社 | Gray-scale correction method for display device, and method of producing display device |
| CN105529002A (en) * | 2014-09-30 | 2016-04-27 | 青岛海信信芯科技有限公司 | Method and device for determining luminance compensation coefficients |
| US20160267876A1 (en) * | 2015-03-13 | 2016-09-15 | Samsung Display Co., Ltd. | Data compensation device and display device including the same |
| CN104882098A (en) * | 2015-06-08 | 2015-09-02 | 广东威创视讯科技股份有限公司 | Image correction method based on LED splicing display screen and image sensor |
| CN105096890A (en) * | 2015-08-31 | 2015-11-25 | 深圳市华星光电技术有限公司 | White balance method of four-color pixel system |
| CN106782303A (en) * | 2016-12-28 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | A kind of display bearing calibration of display panel, apparatus and system |
| CN106782307A (en) * | 2017-01-25 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | The gray level compensation method and gray scale compensation system of a kind of OLED display panel |
| CN107045863A (en) * | 2017-06-26 | 2017-08-15 | 惠科股份有限公司 | The GTG method of adjustment and device of a kind of display panel |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010100A (en) * | 2019-05-10 | 2019-07-12 | 深圳市华星光电技术有限公司 | Image element driving method |
| CN112992063A (en) * | 2019-08-30 | 2021-06-18 | 上海中航光电子有限公司 | Driving method and driving device for pulse width and voltage mixed modulation and display device |
| CN112992063B (en) * | 2019-08-30 | 2022-06-07 | 上海中航光电子有限公司 | Driving method and driving device for pulse width and voltage mixed modulation and display device |
| CN110634435A (en) * | 2019-09-24 | 2019-12-31 | 武汉天马微电子有限公司 | Compensation processing method and compensation processing device for display panel |
| CN110599943A (en) * | 2019-10-25 | 2019-12-20 | 京东方科技集团股份有限公司 | Display panel pixel compensation method and compensation device and display panel |
| CN110599943B (en) * | 2019-10-25 | 2023-05-30 | 京东方科技集团股份有限公司 | Display panel pixel compensation method and compensation device and display panel |
| CN111028778A (en) * | 2019-12-31 | 2020-04-17 | 厦门天马微电子有限公司 | Display brightness compensation method and system |
| CN113870768A (en) * | 2020-06-30 | 2021-12-31 | 西安诺瓦星云科技股份有限公司 | Display compensation method and device |
| CN113870768B (en) * | 2020-06-30 | 2023-09-12 | 西安诺瓦星云科技股份有限公司 | Display compensation method and device |
| WO2022048423A1 (en) * | 2020-09-04 | 2022-03-10 | 京东方科技集团股份有限公司 | Display compensation information acquisition method and apparatus, and display compensation method and apparatus |
| CN111968570A (en) * | 2020-09-04 | 2020-11-20 | 京东方科技集团股份有限公司 | Display compensation information acquisition method, display compensation method and device |
| US11900852B2 (en) | 2020-09-04 | 2024-02-13 | Beijing Boe Optoelectronics Technology Co., Ltd. | Method and device for obtaining display compensation information, and display compensation method and device |
| CN112614461B (en) * | 2020-12-21 | 2022-01-07 | 昆山国显光电有限公司 | Compensation method and device of display panel |
| CN112614461A (en) * | 2020-12-21 | 2021-04-06 | 昆山国显光电有限公司 | Compensation method and device of display panel |
| CN112701138A (en) * | 2020-12-25 | 2021-04-23 | 湖北长江新型显示产业创新中心有限公司 | Display panel, preparation method thereof and display device |
| CN114333675A (en) * | 2021-12-30 | 2022-04-12 | 昆山国显光电有限公司 | Display compensation method, display compensation device, display device and storage medium |
| CN114333675B (en) * | 2021-12-30 | 2023-06-27 | 昆山国显光电有限公司 | Display compensation method, device, display device and storage medium |
| CN114882843A (en) * | 2022-06-17 | 2022-08-09 | 合肥维信诺科技有限公司 | Method and device for compensating brightness of display panel and computer readable storage medium |
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