CN108538264A - The mura compensation methodes of display panel and device - Google Patents
The mura compensation methodes of display panel and device Download PDFInfo
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- CN108538264A CN108538264A CN201810299252.7A CN201810299252A CN108538264A CN 108538264 A CN108538264 A CN 108538264A CN 201810299252 A CN201810299252 A CN 201810299252A CN 108538264 A CN108538264 A CN 108538264A
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- 230000001447 compensatory effect Effects 0.000 claims abstract description 42
- 238000005259 measurement Methods 0.000 claims description 50
- 238000012545 processing Methods 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
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- 239000004973 liquid crystal related substance Substances 0.000 description 12
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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Abstract
The present invention provides mura compensation methodes and the device of a kind of display panel.The mura compensation methodes of the display panel are used as compensation pixel by the pixel chosen in each compensatory zone, it measures and stores the corresponding offset data of each compensation pixel, the offset data of other pixels in each compensatory zone in addition to compensation pixel is calculated further according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation algorithm, the offset data of other pixels in each compensatory zone in addition to compensation pixel is calculated using bi-cubic interpolation algorithm, compared to traditional bilinear interpolation, enable to image transition smoother, reduce sawtooth, improve mura compensation effects, promote image quality.
Description
Technical field
The present invention relates to the mura compensation methodes of display technology field more particularly to a kind of display panel and devices.
Background technology
Liquid crystal display (Liquid Crystal Display, LCD) has thin fuselage, power saving, radiationless etc. numerous excellent
Point, is widely used.Such as：LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen
Curtain or laptop screen etc., occupy an leading position in flat display field.
Liquid crystal display on existing market is largely backlight liquid crystal display comprising liquid crystal display panel and the back of the body
Optical mode group (backlight module).The operation principle of liquid crystal display panel is in thin-film transistor array base-plate (Thin
Film Transistor Array Substrate, TFT Array Substrate) and colored filter substrate (Color
Filter, CF) between pour into liquid crystal molecule, and apply driving voltage on two plate bases to control the rotation side of liquid crystal molecule
To, by the light refraction of backlight module out generate picture.
Due to the flaw on liquid crystal display device processing procedure, often lead to the display surface for the liquid crystal display device produced
There are various traces, i.e. mura phenomenons in plate brightness irregularities.In order to promote the brightness uniformity of display panel, prior art meeting
Mura compensation (demura) is carried out to display panel, specifically by the display for measuring camera and shooting liquid crystal display device of profession
Picture obtains picture center and peripheral position luminance difference, obtains offset data so that peripheral position brightness and centre bit
The brightness set is consistent.
In order to save memory space, production cost is reduced, will not usually preserve the compensation number of whole pixels in the prior art
According to, but display panel is divided into multiple regions and is compressed, selected in each region the offset data of a pixel into
Row preserves, and the offset data of other pixels then carries out bilinear interpolation by the offset data of the pixel to preservation and obtains, but
With the development of technology, the growth of the size and resolution ratio of liquid crystal display device, the benefit for the bilinear interpolation that the prior art uses
Design needs cannot be met by repaying effect, and compensation effect is very poor, and image transition is unsmooth, and sawtooth is serious.
Invention content
The purpose of the present invention is to provide a kind of mura compensation methodes of display panel, enable to image transition more flat
It is sliding, sawtooth is reduced, mura compensation effects are improved, promotes image quality.
The present invention also aims to provide a kind of mura compensation devices of display panel, enable to image transition more flat
It is sliding, sawtooth is reduced, mura compensation effects are improved, promotes image quality.
To achieve the above object, the present invention provides a kind of mura compensation methodes of display panel, include the following steps：
Step S1, display panel is divided into multiple compensatory zones, each compensatory zone includes the more of array arrangement
A pixel；
Step S2, the pixel chosen in each compensatory zone measures as compensation pixel and stores each
The corresponding offset data of compensation pixel；
Step S3, it is calculated according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation algorithm each
The offset data of other pixels in compensatory zone in addition to compensation pixel；
Step S4, mura compensation is carried out to the display panel according to the corresponding offset data of each pixel.
The step S2 is specifically included：
Selected multiple and different grayscale is as measurement grayscale；
It measures and stores each compensation pixel corresponding offset data under each measurement grayscale.
The step S3 is specifically included：
According to each compensation pixel each measurement grayscale under corresponding offset data and with preset bi-cubic interpolation
Algorithm calculates the corresponding compensation number under each measurement grayscale of other pixels in each compensatory zone in addition to compensation pixel
According to.
According to each pixel in the display panel it is each measurement grayscale under corresponding offset data and preset point
It is corresponding in the case where measuring other grayscale other than grayscale unless each that section interpolation algorithm calculates each pixel in the display panel
Offset data.
The preset bi-cubic interpolation algorithm is：
Wherein, P0 is the offset data of current pixel to be calculated, and Pi is nearest 16 of the current pixel to be calculated of distance
The offset data of i-th of compensation pixel in a compensation pixel, Ki are 16 nearest retrieved images of the current pixel to be calculated of distance
The weight of i-th of compensation pixel in element, and Ki=Kix × Kiy, wherein Kix be i-th compensation pixel with it is current to be calculated
The distance of pixel in the row direction, Kiy be i-th compensation pixel with pixel currently to be calculated in a column direction at a distance from.
The preset piecewise interpolation algorithm is：
Wherein, X is target gray scale, and Y is offset data of the current pixel to be calculated under target gray scale, X1And X2To divide
Not adjacent with target gray scale first measures grayscale and second and measures grayscale, Y1And Y2Respectively current pixel to be calculated is the
One measures the offset data under grayscale and the second measurement grayscale, and X1＜ X ＜ X2, the target gray scale is described to measure unless each
A grayscale in other grayscale other than grayscale.
The present invention also provides a kind of mura compensation devices of display panel, including：Compression unit is connected with compression unit
Measuring unit, the storage unit being connected with measuring unit, the processing unit being connected with storage unit and it is connected with processing unit
Compensating unit；
The compression unit, for display panel to be divided into multiple compensatory zones, each compensatory zone includes battle array
Arrange multiple pixels of arrangement；
The measuring unit, a pixel for being chosen in each compensatory zone measure every as compensation pixel
The corresponding offset data of one compensation pixel；
The storage unit, for storing the corresponding offset data of each compensation pixel；
The processing unit, for being calculated according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation
Method calculates the offset data of other pixels in addition to compensation pixel in each compensatory zone；
The compensating unit, for carrying out mura benefits to the display panel according to the corresponding offset data of each pixel
It repays.
The corresponding offset data of described each compensation pixel includes：The compensation pixel is right under each measurement grayscale
The offset data answered, the measurement grayscale are previously selected multiple and different grayscale.
The processing unit be additionally operable to according to each compensation pixel each measurement grayscale under corresponding offset data and
Other pixels in each compensatory zone in addition to compensation pixel are calculated in each measurement with preset bi-cubic interpolation algorithm
Corresponding offset data under grayscale, and the corresponding benefit according to each pixel in the display panel under each measurement grayscale
It repays data and preset piecewise interpolation algorithm calculates each pixel in the display panel and measuring its other than grayscale unless each
Corresponding offset data under his grayscale.
The preset bi-cubic interpolation algorithm is：
Wherein, P0 is the offset data of current pixel to be calculated, and Pi is nearest 16 of the current pixel to be calculated of distance
The offset data of i-th of compensation pixel in a compensation pixel, Ki are 16 nearest retrieved images of the current pixel to be calculated of distance
The weight of i-th of compensation pixel in element, and Ki=Kix × Kiy, wherein Kix be i-th compensation pixel with it is current to be calculated
The distance of pixel in the row direction, Kiy be i-th compensation pixel with pixel currently to be calculated in a column direction at a distance from.
The preset piecewise interpolation algorithm is：
Wherein, X is target gray scale, and Y is offset data of the current pixel to be calculated under target gray scale, X1And X2To divide
Not adjacent with target gray scale first measures grayscale and second and measures grayscale, Y1And Y2Respectively current pixel to be calculated is the
One measures the offset data under grayscale and the second measurement grayscale, and X1＜ X ＜ X2, the target gray scale is described to measure unless each
A grayscale in other grayscale other than grayscale.
Beneficial effects of the present invention：The present invention provides a kind of mura compensation methodes of display panel, and this method passes through every
The pixel chosen in one compensatory zone measures as compensation pixel and stores the corresponding compensation number of each compensation pixel
According to being calculated in each compensatory zone further according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation algorithm
The offset data of other pixels in addition to compensation pixel is calculated in each compensatory zone using bi-cubic interpolation algorithm except compensation
The offset data of other pixels other than pixel enables to image transition smoother, subtracts compared to traditional bilinear interpolation
Few sawtooth, improves mura compensation effects, promotes image quality.The present invention also provides a kind of mura compensation devices of display panel,
It enables to image transition smoother, reduces sawtooth, improve mura compensation effects, promote image quality.
Description of the drawings
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with the detailed of the present invention
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the area distribution schematic diagram of the mura compensation methodes of the display panel of the present invention；
Fig. 2 is the flow chart of the mura compensation methodes of the display panel of the present invention；
Fig. 3 is the mura compensation device schematic diagrames of the display panel of the present invention.
Specific implementation mode
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with the preferred implementation of the present invention
Example and its attached drawing are described in detail.
Referring to Fig. 2, the present invention provides a kind of mura compensation methodes of display panel, include the following steps：
Step S1, referring to Fig. 1, display panel is divided into multiple compensatory zones 100, each compensatory zone 100 is equal
Multiple pixels 101 including array arrangement；
Step S2, the pixel 101 chosen in each compensatory zone 100 is used as compensation pixel, measures and stores
The corresponding offset data of each compensation pixel.
Specifically, in a preferred embodiment of the invention, a pixel in each 100 upper left corner of compensatory zone is chosen
101 be used as compensation pixel, pixel A 00 as shown in Figure 1, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, as
Plain A21, pixel A 31, pixel A 02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel
A33 is compensation pixel.
When it is implemented, the step S2 further comprises following steps：
Selected multiple and different grayscale is as measurement grayscale；
It measures and stores each compensation pixel corresponding offset data under each measurement grayscale.
For example, in a preferred embodiment of the invention, grayscale 32, grayscale 60 and grayscale 192 are first chosen as measurement
Grayscale, then with profession mura measure camera, measure each compensation pixel under grayscale 32 corresponding offset data, in grayscale
Corresponding offset data and the offset data under grayscale 192 under 60, finally by each compensation pixel grayscale 32, grayscale 60 and
Offset data under grayscale 192 is saved in preset flash chip.
Step S3, it is calculated according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation algorithm each
The offset data of other pixels in compensatory zone 100 in addition to compensation pixel.
When it is implemented, the step S3 further comprises following steps：
According to each compensation pixel each measurement grayscale under corresponding offset data and with preset bi-cubic interpolation
Algorithm calculates the corresponding compensation under each measurement grayscale of other pixels in each compensatory zone 100 in addition to compensation pixel
Data；
According to corresponding offset data and preset of each pixel 101 in the display panel under each measurement grayscale
Piecewise interpolation algorithm calculates pair of each pixel 101 in the case where measuring other grayscale other than grayscale unless each in the display panel
The offset data answered.
Specifically, the preset bi-cubic interpolation algorithm is：
Wherein, P0 is the offset data of current pixel to be calculated, and Pi is nearest 16 of the current pixel to be calculated of distance
The offset data of i-th of compensation pixel in a compensation pixel, Ki are 16 nearest retrieved images of the current pixel to be calculated of distance
The weight of i-th of compensation pixel in element, and Ki=Kix × Kiy, wherein Kix be i-th compensation pixel with it is current to be calculated
The distance of pixel in the row direction, Kiy be i-th compensation pixel with pixel currently to be calculated in a column direction at a distance from.
The preset piecewise interpolation algorithm is：
Wherein, X is target gray scale, and Y is offset data of the current pixel to be calculated under target gray scale, X1And X2To divide
Not adjacent with target gray scale first measures grayscale and second and measures grayscale, Y1And Y2Respectively current pixel to be calculated is the
One measures the offset data under grayscale and the second measurement grayscale, and X1＜ X ＜ X2, the target gray scale is described to measure unless each
A grayscale in other grayscale other than grayscale.
For example, according to each compensation pixel under each measurement grayscale corresponding offset data and with it is preset double
It is right under each measurement grayscale that cube interpolation algorithm calculates other pixels in each compensatory zone 100 in addition to compensation pixel
The offset data detailed process answered includes：As shown in Figure 1, pixel B is current pixel to be calculated, range pixel B it is nearest 16
A compensation pixel be pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31,
Pixel A 02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33, with pixel A 00
Position is origin, and using the line direction of pixel arrangement as X-axis, the column direction of pixel arrangement is that Y-axis establishes rectangular coordinate system, at this time as
The coordinate of plain B be (1+u, 1+v), pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21,
The seat of pixel A 31, pixel A 02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33
Mark is respectively (0,0), (1,0), (2,0), (3,0), (0,1), (1,1), (2,1), (3,1), (0,2), (1,2), (2,2), (3
2), (0,3), (1,3), (2,3), (3,3), pixel B and pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, as
Plain A11, pixel A 21, pixel A 31, pixel A 02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23
And the distance of pixel A 33 in the row direction is respectively 1+u, u, 1-u, 2-u, 1+u, u, 1-u, 2-u, 1+u, u, 1-u, 2-u, 1+u,
U, 1-u and 2-u, pixel B and pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, as
Plain A31, pixel A 02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33 are in row side
Upward distance is respectively 1+v, 1+v, 1+v, 1+v, v, v, v, v, 1-v, 1-v, 1-v, 1-v, 2-v, 2-v, 2-v and 2-v, pixel
A00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel A 02, pixel A 12,
Pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33 weight k be (1+u) * (1+v), u* (1+v),
(1-u) * (1+v), (2-u) * (1+v), (1+u) * v, u*v, (1-u) * v, (2-u) * v, (1+u) * (1-v), u* (1-v), (1-
U) * (1-v), (2-u) * (1-v), (1+u) * (2-v), u* (2-v), (1-u) * (2-v) and (2-u) * (2-v)；Selected measurement
Grayscale is respectively grayscale 32, grayscale 60 and grayscale 192, pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel
A11, pixel A 21, pixel A 31, pixel A 02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and
Offset data of the pixel A 33 under grayscale 32 be respectively P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13,
P14, P15, P16, then offset data P of the pixel B under grayscale 32 be：
P=(1+u) * (1+v) * P1+u* (1+v) * P2+ (1-u) * (1+v) * P3+ (2-u) * (1+v) * P4+ (1+u) * v*P5
+u*v*P6+(1-u)*v*P7+(2-u)*v*P8+(1+u)*(1-v)*P9+u*(1-v)*P10+(1-u)*(1-v)*P11+(2-
u)*(1-v)*P12+(1+u)*(2-v)*P13+u*(2-v)*P14+(1-u)*(2-v)*P15+(2-u)*(2-v)*P16；
Pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel
The compensation of A02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33 under grayscale 64
Data be respectively P1 ', P2 ', P3 ', P4 ', P5 ', P6 ', P7 ', P8 ', P9 ', P10 ', P11 ', P12 ', P13 ', P14 ', P15 ' and
P16 ', then offset data P ' of the pixel B under grayscale 64 be：
P '=(1+u) * (1+v) * P1 '+u* (1+v) * P2 '+(1-u) * (1+v) * P3 '+(2-u) * (1+v) * P4 '+(1+
u)*v*P5’+u*v*P6’+(1-u)*v*P7’+(2-u)*v*P8’+(1+u)*(1-v)*P9’+u*(1-v)*P10’+(1-u)*
(1-v)*P11’+(2-u)*(1-v)*P12’+(1+u)*(2-v)*P13’+u*(2-v)*P14’+(1-u)*(2-v)*P15’+
(2-u)*(2-v)*P16’；
Pixel A 00, pixel A 01, pixel A 02, pixel A 03, pixel A 10, pixel A 11, pixel A 12, pixel A 13, pixel
The compensation of A20, pixel A 21, pixel A 22, pixel A 23, pixel A 30, pixel A 31, pixel A 32 and pixel A 33 under grayscale 192
Data be respectively P1 ", P2 ", P3 ", P4 ", P5 ", P6 ", P7 ", P8 ", P9 ", P10 ", P11 ", P12 ", P13 ", P14 ", P15 " and
P16 ", then offset data P " of the pixel B under grayscale 192 be：
P "=(1+u) * (1+v) * P1 "+u* (1+v) * P2 "+(1-u) * (1+v) * P3 "+(2-u) * (1+v) * P4 "+(1+
u)*v*P5”+u*v*P6”+(1-u)*v*P7”+(2-u)*v*P8”+(1+u)*(1-v)*P9”+u*(1-v)*P10”+(1-u)*
(1-v)*P11”+(2-u)*(1-v)*P12”+(1+u)*(2-v)P13”+u*(2-v)*P14”+(1-u)*(2-v)*P15”+(2-
u)*(2-v)*P16”。
It is still to select grayscale 50 for target gray scale, according to the display panel for current pixel to be calculated with pixel B
In corresponding offset data and preset piecewise interpolation algorithm of each pixel 101 under each measurement grayscale calculate the display
Each pixel 101 is in the process for measuring the corresponding offset data other than grayscale under other grayscale unless each in panel：It is selected
Measurement grayscale be 32,64 and 192, it is known that it is grayscale 32 and grayscale 64 that adjacent with grayscale 50 two, which measure grayscale, and in ash
The offset data of 64 times pixel Bs of rank 32 and grayscale is respectively P and P ', then according to above-mentioned preset piecewise interpolation algorithm in grayscale
The offset data of 50 times pixel Bs is：7P/16+9P '/16 can be calculated with reference to the computational methods of grayscale 50 under whole 0~255
The offset data of each pixel 101, each grayscale calculating process is identical as 50 process of grayscale, and details are not described herein.
Step S4, mura compensation is carried out to the display panel according to 101 corresponding offset data of each pixel.
Referring to Fig. 3, the present invention also provides a kind of mura compensation devices of display panel, including：Compression unit 10 and pressure
The connected measuring unit 20 of contracting unit 10, the storage unit 30 being connected with measuring unit 20, the processing being connected with storage unit 30
Unit 40 and the compensating unit 50 being connected with processing unit 40；
The compression unit 10, for display panel to be divided into multiple compensatory zones 100, each compensatory zone 100
Include multiple pixels of array arrangement；
The measuring unit 20, a pixel 101 for being chosen in each compensatory zone 100 are used as retrieved image
Element measures the corresponding offset data of each compensation pixel；
The storage unit 30, for storing the corresponding offset data of each compensation pixel；
The processing unit 40, for according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation
Algorithm calculates the offset data of other pixels in addition to compensation pixel in each compensatory zone 100；
The compensating unit 50, for being carried out to the display panel according to 101 corresponding offset data of each pixel
Mura is compensated.
Specifically, in a preferred embodiment of the invention, a pixel in each 100 upper left corner of compensatory zone is chosen
101 be used as compensation pixel, pixel A 00 as shown in Figure 1, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, as
Plain A21, pixel A 31, pixel A 02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel
A33 is compensation pixel.
When it is implemented, the process for measuring the corresponding offset data of each compensation pixel specifically includes：
Selected multiple and different grayscale is as measurement grayscale；
It measures and stores each compensation pixel corresponding offset data under each measurement grayscale.
For example, in a preferred embodiment of the invention, grayscale 32, grayscale 60 and grayscale 192 are first chosen as measurement
Grayscale, then with profession mura measure camera, measure each compensation pixel under grayscale 32 corresponding offset data, in grayscale
Corresponding offset data and the offset data under grayscale 192 under 60, finally by each compensation pixel grayscale 32, grayscale 60 and
Offset data under grayscale 192 is saved in preset storage unit 30.
That is, the corresponding offset data of described each compensation pixel includes：The compensation pixel is in each measurement ash
Corresponding offset data under rank, the measurement grayscale are previously selected multiple and different grayscale.
The processing unit 40 according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation algorithm
The process for calculating the offset data of other pixels in each compensatory zone 100 in addition to compensation pixel includes：
According to each compensation pixel each measurement grayscale under corresponding offset data and with preset bi-cubic interpolation
Algorithm calculates the corresponding compensation under each measurement grayscale of other pixels in each compensatory zone 100 in addition to compensation pixel
Data；
According to corresponding offset data and preset of each pixel 101 in the display panel under each measurement grayscale
Piecewise interpolation algorithm calculates pair of each pixel 101 in the case where measuring other grayscale other than grayscale unless each in the display panel
The offset data answered.
Specifically, the preset bi-cubic interpolation algorithm is：
Wherein, P0 is the offset data of current pixel to be calculated, and Pi is nearest 16 of the current pixel to be calculated of distance
The offset data of i-th of compensation pixel in a compensation pixel, Ki are 16 nearest retrieved images of the current pixel to be calculated of distance
The weight of i-th of compensation pixel in element, and Ki=Kix × Kiy, wherein Kix be i-th compensation pixel with it is current to be calculated
The distance of pixel in the row direction, Kiy be i-th compensation pixel with pixel currently to be calculated in a column direction at a distance from.
The preset piecewise interpolation algorithm is：
Wherein, X is target gray scale, and Y is offset data of the current pixel to be calculated under target gray scale, X1And X2To divide
Not adjacent with target gray scale first measures grayscale and second and measures grayscale, Y1And Y2Respectively current pixel to be calculated is the
One measures the offset data under grayscale and the second measurement grayscale, and X1＜ X ＜ X2, the target gray scale is described to measure unless each
A grayscale in other grayscale other than grayscale.
Pixel B is current pixel to be calculated, 16 nearest range pixel B compensation pixels be pixel A 00, pixel A 10,
Pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel A 02, pixel A 12, pixel A 22, pixel
A32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33, using the position of pixel A 00 as origin, with the line direction of pixel arrangement
For X-axis, the column direction of pixel arrangement is that Y-axis establishes rectangular coordinate system, and the coordinate of pixel B is (1+u, 1+v) at this time, pixel A 00,
Pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel A 02, pixel A 12, pixel
A22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33 coordinate be respectively (0,0), (1,0), (2,0), (3,
0), (0,1), (1,1), (2,1), (3,1), (0,2), (1,2), (2,2), (3,2), (0,3), (1,3), (2,3), (3,3), as
Plain B and pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel A 02,
The distance difference of pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33 in the row direction
For 1+u, u, 1-u, 2-u, 1+u, u, 1-u, 2-u, 1+u, u, 1-u, 2-u, 1+u, u, 1-u and 2-u, pixel B with pixel A 00, as
Plain A10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel A 02, pixel A 12, pixel
A22, pixel A 32, pixel A 03, pixel A 13, the distance of pixel A 23 and pixel A 33 in a column direction are respectively 1+v, 1+v, 1+
V, 1+v, v, v, v, v, 1-v, 1-v, 1-v, 1-v, 2-v, 2-v, 2-v and 2-v, pixel A 00, pixel A 10, pixel A 20, pixel
A30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel A 02, pixel A 12, pixel A 22, pixel A 32, pixel A 03,
The weight k of pixel A 13, pixel A 23 and pixel A 33 be (1+u) * (1+v), u* (1+v), (1-u) * (1+v), (2-u) * (1+v),
(1+u) * v, u*v, (1-u) * v, (2-u) * v, (1+u) * (1-v), u* (1-v), (1-u) * (1-v), (2-u) * (1-v), (1+
U) * (2-v), u* (2-v), (1-u) * (2-v) and (2-u) * (2-v)；Selected measurement grayscale be respectively grayscale 32, grayscale 60 and
Grayscale 192, pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel
The compensation of A02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33 under grayscale 32
Data are respectively P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13, P14, P15, P16, then pixel B is in ash
Offset data P under rank 32 is：
P=(1+u) * (1+v) * P1+u* (1+v) * P2+ (1-u) * (1+v) * P3+ (2-u) * (1+v) * P4+ (1+u) * v*P5
+u*v*P6+(1-u)*v*P7+(2-u)*v*P8+(1+u)*(1-v)*P9+u*(1-v)*P10+(1-u)*(1-v)*P11+(2-
u)*(1-v)*P12+(1+u)*(2-v)*P13+u*(2-v)*P14+(1-u)*(2-v)*P15+(2-u)*(2-v)*P16；
Pixel A 00, pixel A 10, pixel A 20, pixel A 30, pixel A 01, pixel A 11, pixel A 21, pixel A 31, pixel
The compensation of A02, pixel A 12, pixel A 22, pixel A 32, pixel A 03, pixel A 13, pixel A 23 and pixel A 33 under grayscale 64
Data be respectively P1 ', P2 ', P3 ', P4 ', P5 ', P6 ', P7 ', P8 ', P9 ', P10 ', P11 ', P12 ', P13 ', P14 ', P15 ' and
P16 ', then offset data P ' of the pixel B under grayscale 64 be：
P '=(1+u) * (1+v) * P1 '+u* (1+v) * P2 '+(1-u) * (1+v) * P3 '+(2-u) * (1+v) * P4 '+(1+
u)*v*P5’+u*v*P6’+(1-u)*v*P7’+(2-u)*v*P8’+(1+u)*(1-v)*P9’+u*(1-v)*P10’+(1-u)*
(1-v)*P11’+(2-u)*(1-v)*P12’+(1+u)*(2-v)*P13’+u*(2-v)*P14’+(1-u)*(2-v)*P15’+
(2-u)*(2-v)*P16’；
Pixel A 00, pixel A 01, pixel A 02, pixel A 03, pixel A 10, pixel A 11, pixel A 12, pixel A 13, pixel
The compensation of A20, pixel A 21, pixel A 22, pixel A 23, pixel A 30, pixel A 31, pixel A 32 and pixel A 33 under grayscale 192
Data be respectively P1 ", P2 ", P3 ", P4 ", P5 ", P6 ", P7 ", P8 ", P9 ", P10 ", P11 ", P12 ", P13 ", P14 ", P15 " and
P16 ", then offset data P " of the pixel B under grayscale 192 be：
P "=(1+u) * (1+v) * P1 "+u* (1+v) * P2 "+(1-u) * (1+v) * P3 "+(2-u) * (1+v) * P4 "+(1+
u)*v*P5”+u*v*P6”+(1-u)*v*P7”+(2-u)*v*P8”+(1+u)*(1-v)*P9”+u*(1-v)*P10”+(1-u)*
(1-v)*P11”+(2-u)*(1-v)*P12”+(1+u)*(2-v)P13”+u*(2-v)*P14”+(1-u)*(2-v)*P15”+(2-
u)*(2-v)*P16”。
It is still to select grayscale 50 for target gray scale, according to the display panel for current pixel to be calculated with pixel B
In corresponding offset data and preset piecewise interpolation algorithm of each pixel 101 under each measurement grayscale calculate the display
Each pixel 101 is in the process for measuring the corresponding offset data other than grayscale under other grayscale unless each in panel：It is selected
Measurement grayscale be 32,64 and 192, it is known that it is grayscale 32 and grayscale 64 that adjacent with grayscale 50 two, which measure grayscale, and in ash
The offset data of 64 times pixel Bs of rank 32 and grayscale is respectively P and P ', then according to above-mentioned preset piecewise interpolation algorithm in grayscale
The offset data of 50 times pixel Bs is：7P/16+9P '/16 can be calculated with reference to the computational methods of grayscale 50 under whole 0~255
The offset data of each pixel 101, each grayscale calculating process is identical as 50 process of grayscale, and details are not described herein.
In conclusion the present invention provides mura compensation methodes and the device of a kind of display panel.The display panel
Mura compensation methodes are used as compensation pixel by the pixel chosen in each compensatory zone, measure and store each
The corresponding offset data of compensation pixel is calculated further according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation
Method calculates the offset data of other pixels in addition to compensation pixel in each compensatory zone, is calculated using bi-cubic interpolation algorithm
The offset data of other pixels in each compensatory zone in addition to compensation pixel can compared to traditional bilinear interpolation
So that image transition is smoother, sawtooth is reduced, improves mura compensation effects, promotes image quality.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding change and deformations are made in design, and all these change and distortions should all belong to the claims in the present invention
Protection domain.
Claims (10)
1. a kind of mura compensation methodes of display panel, which is characterized in that include the following steps：
Step S1, display panel is divided into multiple compensatory zones (100), each compensatory zone (100) includes that array is arranged
Multiple pixels (101) of cloth；
Step S2, the pixel (101) chosen in each compensatory zone (100) is used as compensation pixel, measures and stores
The corresponding offset data of each compensation pixel；
Step S3, each compensation is calculated according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation algorithm
The offset data of other pixels in region (100) in addition to compensation pixel；
Step S4, mura compensation is carried out to the display panel according to the corresponding offset data of each pixel (101).
2. the mura compensation methodes of display panel as described in claim 1, which is characterized in that the step S2 is specifically included：
Selected multiple and different grayscale is as measurement grayscale；
It measures and stores each compensation pixel corresponding offset data under each measurement grayscale.
3. the mura compensation methodes of display panel as claimed in claim 2, which is characterized in that the step S3 is specifically included：
According to each compensation pixel each measurement grayscale under corresponding offset data and with preset bi-cubic interpolation algorithm
Calculate the corresponding compensation number under each measurement grayscale of other pixels in each compensatory zone (100) in addition to compensation pixel
According to；
According to each pixel (101) in the display panel it is each measurement grayscale under corresponding offset data and preset point
Section interpolation algorithm calculates pair of each pixel (101) in the case where measuring other grayscale other than grayscale unless each in the display panel
The offset data answered.
4. the mura compensation methodes of display panel as described in claim 1, which is characterized in that the preset bi-cubic interpolation
Algorithm is：
Wherein, P0 is the offset data of current pixel to be calculated, and Pi is 16 nearest benefits of the current pixel to be calculated of distance
The offset data of i-th of compensation pixel in pixel is repaid, Ki is in 16 nearest compensation pixels of the current pixel to be calculated of distance
The weight of i-th of compensation pixel, and Ki=Kix × Kiy, wherein Kix is i-th of compensation pixel and current pixel to be calculated
Distance in the row direction, Kiy be i-th compensation pixel with pixel currently to be calculated in a column direction at a distance from.
5. the mura compensation methodes of display panel as claimed in claim 3, which is characterized in that the preset piecewise interpolation is calculated
Method is：
Wherein, X is target gray scale, and Y is offset data of the current pixel to be calculated under target gray scale, X1And X2For respectively with
Adjacent the first measurement grayscale and second of target gray scale measures grayscale, Y1And Y2Respectively current pixel to be calculated is surveyed first
Measure the offset data under grayscale and the second measurement grayscale, and X1＜ X ＜ X2, the target gray scale is described to measure grayscale unless each
A grayscale in other grayscale in addition.
6. a kind of mura compensation devices of display panel, which is characterized in that including：Compression unit (10) and compression unit (10)
Connected measuring unit (20), the storage unit (30) being connected with measuring unit (20), the processing being connected with storage unit (30)
Unit (40) and the compensating unit (50) being connected with processing unit (40)；
The compression unit (10), for display panel to be divided into multiple compensatory zones (100), each compensatory zone
(100) include multiple pixels of array arrangement；
The measuring unit (20), a pixel (101) for being chosen in each compensatory zone (100) are used as retrieved image
Element measures the corresponding offset data of each compensation pixel；
The storage unit (30), for storing the corresponding offset data of each compensation pixel；
The processing unit (40), for being calculated according to the corresponding offset data of each compensation pixel and with preset bi-cubic interpolation
Method calculates the offset data of other pixels in addition to compensation pixel in each compensatory zone (100)；
The compensating unit (50), for being carried out to the display panel according to the corresponding offset data of each pixel (101)
Mura is compensated.
7. the mura compensation devices of display panel as claimed in claim 6, which is characterized in that each described compensation pixel pair
The offset data answered includes：The compensation pixel corresponding offset data, measurement grayscale under each measurement grayscale are
Previously selected multiple and different grayscale.
8. the mura compensation devices of display panel as claimed in claim 7, which is characterized in that the processing unit (30) is also used
According to each compensation pixel each measurement grayscale under corresponding offset data and with preset bi-cubic interpolation algorithm meter
Calculate the corresponding compensation number under each measurement grayscale of other pixels in each compensatory zone (100) in addition to compensation pixel
According to, and according to corresponding offset data of each pixel (101) in the display panel under each measurement grayscale and default
Piecewise interpolation algorithm calculate in the display panel each pixel (101) in the case where measuring other grayscale other than grayscale unless each
Corresponding offset data.
9. the mura compensation devices of display panel as claimed in claim 6, which is characterized in that the preset bi-cubic interpolation
Algorithm is：
Wherein, P0 is the offset data of current pixel to be calculated, and Pi is 16 nearest benefits of the current pixel to be calculated of distance
The offset data of i-th of compensation pixel in pixel is repaid, Ki is in 16 nearest compensation pixels of the current pixel to be calculated of distance
The weight of i-th of compensation pixel, and Ki=Kix × Kiy, wherein Kix is i-th of compensation pixel and current pixel to be calculated
Distance in the row direction, Kiy be i-th compensation pixel with pixel currently to be calculated in a column direction at a distance from.
10. the mura compensation devices of display panel as claimed in claim 8, which is characterized in that the preset piecewise interpolation
Algorithm is：
Wherein, X is target gray scale, and Y is offset data of the current pixel to be calculated under target gray scale, X1And X2For respectively with
Adjacent the first measurement grayscale and second of target gray scale measures grayscale, Y1And Y2Respectively current pixel to be calculated is surveyed first
Measure the offset data under grayscale and the second measurement grayscale, and X1＜ X ＜ X2, the target gray scale is described to measure grayscale unless each
A grayscale in other grayscale in addition.
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