CN107610659A - A kind of method for eliminating panel luminance inequality between horizontally or vertically substrate - Google Patents
A kind of method for eliminating panel luminance inequality between horizontally or vertically substrate Download PDFInfo
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- CN107610659A CN107610659A CN201710792344.4A CN201710792344A CN107610659A CN 107610659 A CN107610659 A CN 107610659A CN 201710792344 A CN201710792344 A CN 201710792344A CN 107610659 A CN107610659 A CN 107610659A
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Abstract
The application provides a kind of method for eliminating panel luminance inequality between horizontally or vertically substrate, including：Setting need to supplement multiple separations on a direction of shooting on the line of demarcation of multiple substrates；Counter plate is shot, and to obtain the brightness value of multiple sample points, the multiple sample point includes：The right angle electrical of multiple rectangular areas of the panel, and need to supplement the multiple separation in the line of demarcation of the multiple substrate of shooting, the multiple separation with the multiple pixels in interval on line of demarcation in taking a separation；Export the brightness value of multiple right angle electricals and the brightness value of the multiple separation.The application can effectively solve the line of demarcation panel luminance inequality of substrate and lifting eliminates the adaptive condition of panel luminance inequality mechanism counter plate.
Description
Technical field
The application is related to technical field of liquid crystal display, more particularly to it is a kind of for horizontally or vertically substrate (such as：Flip is thin
Film, Chip On Film, abbreviation COF) between eliminate the uneven method of panel luminance.
Background technology
For liquid crystal panel due to complex manufacturing, management and control difficulty is big, and it is (bright that mura phenomenons are easily caused during production
Spend uneven）, there is bright spot or dim spot, i.e., some region of panel is due to the vestige of block shape caused by the difference of display brightness
Phenomenon, reduce the credit rating of panel.In the last few years, as the popularization of 4K, 2K TV, panel luminance uneven phenomenon are more and more tighter
Weight, Demura (it is uneven to eliminate panel luminance) technology are just arisen at the historic moment, and current this technology is adopted to reduce the data quantity of compensation
The scheme of one minimum compensatory zone of setting, such as the rectangular area of currently used 8*8=64 pixel (pixel) are taken as most
Small compensatory zone, datum mark of 4 right angle electricals of this rectangle as compensation is only taken, other regions of rectangle are all with this 4
Algorithm computing is done on the basis of point to obtain, such internal memory only needs to preserve the data of 4 pixel l points.But with liquid crystal surface
Plate it is in large size, easily occur horizontal or vertical brightness disproportionation on the line of demarcation of chip on film, but utilize current disappear
Except panel luminance inequality technology, the uneven edge of panel luminance is not just on sample point, then current elimination panel luminance
The effect of uneven scheme will be very poor, or even does not have effect at all.
The content of the invention
The embodiment of the present application technical problems to be solved are to provide a kind of bright for eliminating panel between horizontally or vertically substrate
Uneven method is spent, can solve the problem that the line of demarcation panel luminance inequality of substrate and the adaptation shape of lifting Demura mechanism counter plates
Condition.
In order to solve the above technical problems, the embodiment of the present application provides following technical scheme first：One kind is for horizontal or vertical
The uneven method of panel luminance is eliminated between straight substrate, including：
Setting need to supplement multiple separations on a direction of shooting on the line of demarcation of multiple substrates；
Counter plate is shot, and to obtain the brightness value of multiple sample points, the multiple sample point includes：The panel it is multiple
The right angle electrical of rectangular area, and the multiple separation in the line of demarcation of the multiple substrate of shooting need to be supplemented, it is the multiple
Separation with the multiple pixels in interval on line of demarcation in taking a separation；
Export the brightness value of multiple right angle electricals and the brightness value of the multiple separation.
Optionally, the multiple rectangular area is 8*8 pixel.
Optionally, the multiple rectangular area is 4*4 pixel.
Optionally, the multiple pixel is 8 pixels.
Optionally, the multiple pixel is 4 pixels.
Optionally, the direction is horizontal direction.
Optionally, the direction is vertical direction.
Optionally, methods described further comprises to the bright of the brightness value of the multiple right angle electrical and the multiple separation
Angle value compensates value calculating.
Optionally, methods described further comprises deleting the multiple right angle not on the line of demarcation of the multiple substrate
The brightness value of point.
On the other hand, the embodiment of the present application also provides a kind of for eliminating panel luminance inequality between horizontally or vertically substrate
Method, including：
Setting need to supplement multiple separations on a direction of shooting on the line of demarcation of multiple substrates；
Counter plate is shot, and to obtain the brightness value of multiple sample points, the multiple sample point includes：The panel it is multiple
The right angle electrical of rectangular area, and the multiple separation in the line of demarcation of the multiple substrate of shooting need to be supplemented, it is the multiple
Separation with the multiple pixels in interval on line of demarcation in taking a separation；
Export the brightness value of multiple right angle electricals and the brightness value of the multiple separation；
The brightness value of the multiple right angle electrical not on the line of demarcation of the multiple substrate is deleted, and is pointed to the multiple base
The brightness value of the multiple right angle electrical and the multiple separation on the line of demarcation of plate compensates value calculating.
By using above-mentioned technical proposal, the application at least has the advantages that：The application is multiple by first setting
Separation, then counter plate are shot to obtain the brightness value of multiple sample points, finally export the brightness value of multiple right angle electricals again
And the brightness value of the multiple separation, can effectively solve the line of demarcation panel luminance inequality of substrate and lifting elimination panel is bright
Spend the adaptive condition of uneven mechanism counter plate., can be with addition, the application is when panel luminance uneven boundary point is finally navigated to
The sampling data of other points is cancelled in setting, only carries out compensation calculation to border point, can further reduce amount of calculation and final
Memory data output.
Brief description of the drawings
It is required in being described below to embodiment to use in order to illustrate more clearly of the embodiment of the present application technical scheme
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present application, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that current Demura technologies realize the principle schematic for eliminating panel luminance inequality.
Fig. 2 is the vertical line of demarcation brightness disproportionation schematic diagram of substrate.
Fig. 3 is that existing demura technologies are typically all to carry out obtaining showing for sample point by minimum unit of 8*8 pixel
It is intended to.
Fig. 4 is that the application is a kind of for scheming between horizontally or vertically substrate the step of the method for elimination panel luminance inequality.
Fig. 5 is the signal that multiple separations in the line of demarcation of substrate in vertical direction are obtained in the embodiment of the application one
Figure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation describes.Obviously, described embodiment is some embodiments of the present application, rather than whole embodiments.Based on this Shen
Please in embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belong to the scope of the application protection.
It should be appreciated that ought be in this specification and in the appended claims in use, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but it is not precluded from one or more of the other feature, whole
Body, step, operation, element, component and/or its presence or addition for gathering.
As shown in figure 1, it is the current phase for eliminating the uneven sampling theorem figure of panel luminance, eliminating panel luminance inequality system
Machine shoots the display situation of whole panel, and the picture schematic horizontal direction in left side has a white block panel luminance uneven in figure
W and black block panel luminance inequality B, number is done to two regions by eliminating after the uneven analysis of panel luminance calculates
According to compensation, i.e., will to be initial data be added the display data in the region with offset data, white block panel luminance inequality W's
Offset data is negative, i.e., display data can be reduced, and corresponding black block panel luminance inequality B data can phase
It should increase, may finally so obtain uniform brightness, realize the uneven elimination of panel luminance.
As shown in Fig. 2 be the vertical line of demarcation panel luminance inequality schematic diagram of substrate, because the size of panel is increasing,
The quantity of substrate is also more and more, and substrate input voltage has deviation slightly, will result in the aobvious of the region that this substrate drives
Show that effect will be different from other regions, just occur that bright show slinkingly using substrate as line of demarcation is shown, cause visual panel bright
Spend uneven phenomenon.With the high parsing panel UD citings of 3840*2160 pixel in figure, totally 12 substrate COF1 to COF12, each
The pixel count that substrate is responsible for driving is 3840/12=320, assumes that drive area corresponding to substrate COF4 is partially dark in figure.
As shown in figure 3, because existing elimination panel luminance inequality technology is typically all using the unit of 8*8 pixel as most
Small compensating unit, figure orbicular spot are exactly sample point, and because the number of substrate is even number, with high 12 substrates for parsing panel
For, the driving line number of each substrate is 8 multiple, then except first substrate, first drive of other substrates
Moving-wire is not on sample point, and from the point of view of the substrate COF3 in figure and substrate COF4 line of demarcation amplification, label 960 is substrate
COF3 last root drives line, and label 961 is substrate COF4 first drives line, then label 960 can be sample point,
And label 961 is just on sample point, although the 968th drives line still on sample point, from label 960 to label 968
Sample point do the linear operations of data, be the inclined dim phenomenon of first drives line of can not disappearing well, visual panel
Brightness disproportionation phenomenon can still be present.
Therefore this application provides the line of demarcation panel luminance inequality and lifting that can solve the problem that substrate to eliminate panel luminance not
The adaptive condition of equal mechanism counter plate, as described below.
Fig. 4 is that the application is a kind of for scheming between horizontally or vertically substrate the step of the method for elimination panel luminance inequality；Fig. 5
To obtain the schematic diagram of multiple separations in the line of demarcation of substrate in vertical direction in the embodiment of the application one.
Fig. 4 to Fig. 5 is refer to, one kind that the embodiment of the present application provides between horizontally or vertically substrate for eliminating panel luminance
Uneven method, this method comprise the following steps：
Step S1, setting need to supplement multiple substrates in the vertical direction of shooting (such as：Chip on film) COF3, COF4 etc. boundary
Multiple separation P1, P2 of line.
In the embodiment of the present application, above-mentioned setting operation can be realized using computing devices such as computers, it is every as shown in Figure 2
One substrate COF1 to COF12 driving line number is all 8 multiple, then except first substrate COF1, other substrates
COF2 to COF12 first drives line puts the line of demarcation of substrate COF3 and substrate COF4 in Fig. 2 not on sample point
From the point of view of big, label 960 as shown in Figure 3 is substrate COF3 last root drives line, and label 961 is first of substrate COF4
Drives line, then label 960 can be sample point, and label 961 is not just on sample point, therefore need to supplement shooting with computer setting
Vertical direction on multiple substrate COF2 to COF12 first drives line line of demarcation multiple separations, as shown in Figure 4 electricity
Brain setting need to supplement multiple separation P1, the P2 in the line of demarcation of the vertical direction upper substrate COF4 of shooting first drives line,
In the embodiment of the present application, need to supplement the line of demarcation of the substrate of shooting can be drawn via general mathematical computations (Fig. 2 as described above with
The high parsing panel UD citings of 3840*2160 pixel, each substrate COF1 to COF12 driving line number is 8 multiple,
Therefore multiple separations in the line of demarcation for first drives line for shooting multiple substrate COF2 to COF12 must be supplemented), or by bright
The line of demarcation that acquisition device (camera) obtains the substrate on panel is spent, the line of demarcation of the substrate of shooting need to be supplemented with identification.
Step S2, counter plate is shot, to obtain the brightness value of multiple sample points.
In the embodiment of the present application, luminance acquisition device (such as camera) counter plate can be controlled by computing devices such as computers
Shot, to obtain the brightness value of multiple sample points, the multiple sample point includes：The right angle of multiple rectangular areas of panel
Point N1 ~ N4 (N1 ~ N4 as shown in Figure 4 and round dot as shown in Figure 3 be all sample point), and the substrate COF4 of shooting need to be supplemented
Multiple separation P1, the P2 in line of demarcation, the multiple separation P1, P2 with 8, interval pixel on line of demarcation in taking a boundary
Point P1, P2 (substrate COF4 as shown in Figure 4 line of demarcation and substrate COF2 as shown in Figure 2 line of demarcation (label 321), base
Plate COF3 line of demarcation (label 641) etc. can all supplement shooting, to obtain the brightness of multiple separations in the line of demarcation of substrate
Value).
Step S3, multiple right angle electrical N1 ~ N4 brightness value and multiple separation P1, P2 brightness value are exported.
In the embodiment of the present application, multiple right angle electrical N1 ~ N4 brightness value (N1 ~ N4 as shown in Figure 4 can specifically be exported
Brightness value and round dot as shown in Figure 3 brightness value) and multiple separation P1, P2 brightness value (substrate as shown in Figure 4
Separation P1, the P2 in COF4 line of demarcation brightness value and substrate COF2 as shown in Figure 2 line of demarcation (label 321), substrate
The brightness value of multiple separations in COF3 line of demarcation (label 641) etc.) to computing devices such as computers, to carry out follow-up number
According to calculation process.
Step S4, the brightness value to multiple right angle electrical N1 ~ N4 and multiple separation P1, P2 brightness value compensate value meter
Calculate.
In the embodiment of the present application, multiple right angle electrical N1 ~ N4 brightness value (can such as be schemed by means of computing devices such as computers
The brightness value of the brightness value of N1 ~ N4 shown in 4 and round dot as shown in Figure 3) and multiple separation P1, P2 brightness value (such as Fig. 4
Line of demarcation (the label of separation P1, the P2 in shown substrate COF4 line of demarcation brightness value and substrate COF2 as shown in Figure 2
321), the brightness value of multiple separations in substrate COF3 line of demarcation (label 641) etc.) compensate value calculating.
Therefore, the embodiment of the present application is also sampled to substrate COF2 to COF12 first drives line, so if gone out
During existing line of demarcation brightness disproportionation, because the uneven beginning boundary of panel luminance is also on sample point, can correctly it be compensated
Value, and the offset of the 8th drives line is also correct, whole panel brightness disproportionation region can be compensated well,
This substrate line of demarcation brightness disproportionation can be eliminated well.Simultaneously because simply first drives line of each substrate is increased
Add sampling action, for panel UD 12 substrates, the sample point of existing demura technologies is 481（It is horizontal）X 271（Hang down
Directly）=130351 points (as shown in Figure 3), and the embodiment of the present application only increases 11 sample lines, i.e. 271 X 11=2981
It is individual, simply than adding 2.3% data volume originally, therefore do not had for amount of calculation and final memory data output
Too big burden.Similarly for being possible to panel luminance inequality occur in horizontal direction, can also be carried out effectively using this method
Solve.
In certain embodiments, multiple rectangular areas of the acquired panel can be 8*8 pixel or 4*4 picture
Element, and substrate COF2 to COF12 multiple separations are obtained in taking a separation on line of demarcation with 8 or 4, interval pixel,
So that user need to obtain the precision of sample point according to panel size and substrate number to adjust luminance acquisition device.
In a particular embodiment, one kind that the embodiment of the present application provides between horizontally or vertically substrate for eliminating panel luminance
Uneven method can be applied to LCD display panel, OLED display panel, QLED display panels, curved face display panel or other are aobvious
Show in panel.Such as：Applied in LCD display panel, referring again to Fig. 4 to Fig. 5, one kind that the present embodiment provides is for level
Or the method that LCD display panel brightness disproportionation is eliminated between vertical substrate, this method comprise the following steps：
Step S1, setting need to supplement multiple substrates in the vertical direction of shooting LCD display panel (such as：Chip on film) COF3,
Multiple separation P1, the P2 in COF4 etc. line of demarcation.
In the embodiment of the present application, above-mentioned setting operation can be carried out using computing devices such as computers, it is every as shown in Figure 2
One substrate COF1 to COF12 driving line number is all 8 multiple, then except first substrate COF1, other substrates
COF2 to COF12 first drives line puts the line of demarcation of substrate COF3 and substrate COF4 in Fig. 2 not on sample point
From the point of view of big, label 960 as shown in Figure 3 is substrate COF3 last root drives line, and label 961 is first of substrate COF4
Drives line, then label 960 can be sample point, and label 961 is not just on sample point, therefore need to supplement shooting with computer setting
Vertical direction on multiple substrate COF2 to COF12 first drives line line of demarcation multiple separations, as shown in Figure 4 electricity
Brain setting need to supplement multiple points of the line of demarcation of the vertical direction upper substrate COF4 of shooting LCD display panel first drives line
Boundary point P1, P2, in the embodiment of the present application, need to supplement the line of demarcation of the substrate of shooting can draw (such as via general mathematical computations
Upper described Fig. 2 is illustrated with the LCD display panel UD of 3840*2160 pixel, each substrate COF1 to COF12 driving line number
All it is 8 multiple, therefore multiple boundary in the line of demarcation for first drives line for shooting multiple substrate COF2 to COF12 must be supplemented
Point), or the line of demarcation by the substrate on luminance acquisition device (camera) acquirement LCD display panel, shooting need to be supplemented with identification
Substrate line of demarcation.
Step S2, LCD display panel is shot, to obtain the brightness value of multiple sample points.
In the embodiment of the present application, it can use and luminance acquisition device (such as camera) is controlled with computing devices such as computers
LCD display panel is shot, to obtain the brightness value of multiple sample points, the multiple sample point includes：LCD display panel
Multiple rectangular areas right angle electrical N1 ~ N4 (N1 ~ N4 as shown in Figure 4 and round dot as shown in Figure 3 be all sample point), and need
Supplement shooting substrate COF4 line of demarcation multiple separation P1, P2, the multiple separation P1, P2 on line of demarcation with
Every 8 pixels take separation P1, a P2 (substrate COF4 as shown in Figure 4 line of demarcation and substrate COF2's as shown in Figure 2
Line of demarcation (label 321), substrate COF3 line of demarcation (label 641) etc. can all supplement shooting, to obtain the line of demarcation of substrate
The brightness value of multiple separations).
Step S3, multiple right angle electrical N1 ~ N4 brightness value and multiple separation P1, P2 brightness value are exported.
In the embodiment of the present application, multiple right angle electrical N1 ~ N4 brightness value (N1 ~ N4 as shown in Figure 4 can specifically be exported
Brightness value and round dot as shown in Figure 3 brightness value) and multiple separation P1, P2 brightness value (substrate as shown in Figure 4
Separation P1, the P2 in COF4 line of demarcation brightness value and substrate COF2 as shown in Figure 2 line of demarcation (label 321), substrate
The brightness value of multiple separations in COF3 line of demarcation (label 641) etc.) to computing devices such as computers, carried out subsequently so as to convenient
Calculation process.
Step S4, the brightness value to multiple right angle electrical N1 ~ N4 and multiple separation P1, P2 brightness value compensate value meter
Calculate.
In the embodiment of the present application, can by means of the computing devices such as computer to multiple right angle electrical N1 ~ N4 brightness value (such as
The brightness value of the brightness value of N1 ~ N4 shown in Fig. 4 and round dot as shown in Figure 3) and multiple separation P1, P2 brightness value (such as
The line of demarcation of separation P1, the P2 in the line of demarcation of the substrate COF4 shown in Fig. 4 brightness value and substrate COF2 as shown in Figure 2
The brightness value of multiple separations in (label 321), substrate COF3 line of demarcation (label 641) etc.) compensate value calculating.
Therefore, the embodiment of the present application is also sampled to substrate COF2 to COF12 first drives line, so if gone out
During existing line of demarcation brightness disproportionation, because the beginning boundary of LCD display panel brightness disproportionation is also on sample point, it can obtain correct
Offset, and the offset of the 8th drives line is also correct, and whole LCD display panel brightness disproportionation region can obtain
To good compensation, this substrate line of demarcation brightness disproportionation can be eliminated well.Simultaneously because simply to each substrate
First drives line increases sampling action, for LCD display panel UD 12 substrates, the sampling of existing demura technologies
Point is 481（It is horizontal）X 271（Vertically）=130351 points (as shown in Figure 3), and the embodiment of the present application only increases 11 and taken
Line-transect, i.e. 271X11=2981 point, simply than added originally 2.3% data volume, therefore for amount of calculation and final
Memory data output do not have too big burden.Similarly for being possible to LCD display panel brightness disproportionation occur in horizontal direction,
It can be efficiently solved using this method.
In certain embodiments, multiple rectangular areas of the acquired LCD display panel can be 8*8 pixel or 4*4
Individual pixel, and substrate COF2 to COF12 multiple separations are obtained in taking one point on line of demarcation with 8 or 4, interval pixel
Boundary's point so that user need to obtain the essence of sample point according to LCD display panel size and substrate number to adjust luminance acquisition device
Degree.
In certain embodiments, multiple right angle electricals not on multiple substrate COF1 to COF12 line of demarcation can also be deleted
(such as Fig. 2 labels 8,16,24, and such as Fig. 4：N2, N4) brightness value.Therefore multiple substrate COF1 are only pointed to COF12's
Multiple right angle electricals (such as Fig. 2 labels 1,320,640) and multiple separation (such as Fig. 4 on line of demarcation：P1, P2) brightness value enter
Row compensation value calculation.It thereby can further reduce amount of calculation and final memory data output.
Described above, the only embodiment of the application, but the protection domain of the application is not limited thereto is any
Those familiar with the art can readily occur in various equivalent modifications or replace in the technical scope that the application discloses
Change, these modifications or substitutions should all cover within the protection domain of the application.Therefore, the protection domain of the application should be with right
It is required that protection domain be defined.
Claims (10)
- It is 1. a kind of for eliminating the uneven method of panel luminance between horizontally or vertically substrate, it is characterised in that including：Setting need to supplement multiple separations on a direction of shooting on the line of demarcation of multiple substrates；Counter plate is shot, and to obtain the brightness value of multiple sample points, the multiple sample point includes：The panel it is multiple The right angle electrical of rectangular area, and the multiple separation in the line of demarcation of the multiple substrate of shooting need to be supplemented, it is the multiple Separation with the multiple pixels in interval on line of demarcation in taking a separation；Export the brightness value of multiple right angle electricals and the brightness value of the multiple separation.
- 2. the method as described in claim 1, it is characterised in that the multiple rectangular area is 8*8 pixel.
- 3. the method as described in claim 1, it is characterised in that the multiple rectangular area is 4*4 pixel.
- 4. method as claimed in claim 2, it is characterised in that the multiple pixel is 8 pixels.
- 5. method as claimed in claim 3, it is characterised in that the multiple pixel is 4 pixels.
- 6. the method as described in claim 1, it is characterised in that the direction is horizontal direction.
- 7. the method as described in claim 1, it is characterised in that the direction is vertical direction.
- 8. the method as described in claim 1, it is characterised in that methods described further comprises to the bright of the multiple right angle electrical The brightness value of angle value and the multiple separation compensates value calculating.
- 9. the method as described in claim 1, it is characterised in that methods described further comprises deleting not in the multiple substrate Line of demarcation on the multiple right angle electrical brightness value.
- It is 10. a kind of for eliminating the uneven method of panel luminance between horizontally or vertically substrate, it is characterised in that including：Setting need to supplement multiple separations on a direction of shooting on the line of demarcation of multiple substrates；Counter plate is shot, and to obtain the brightness value of multiple sample points, the multiple sample point includes：The panel it is multiple The right angle electrical of rectangular area, and the multiple separation in the line of demarcation of the multiple substrate of shooting need to be supplemented, it is the multiple Separation with the multiple pixels in interval on line of demarcation in taking a separation；Export the brightness value of multiple right angle electricals and the brightness value of the multiple separation；The brightness value of the multiple right angle electrical not on the line of demarcation of the multiple substrate is deleted, and is pointed to the multiple base The brightness value of the multiple right angle electrical and the multiple separation on the line of demarcation of plate compensates value calculating.
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| US9348553B2 (en) * | 2011-10-18 | 2016-05-24 | Reald Inc. | Electronic display tiling apparatus and method thereof |
| CN105336286A (en) * | 2014-07-29 | 2016-02-17 | 杭州海康威视数字技术股份有限公司 | Spliced screen color adjusting method and device |
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