CN105590606B - Mura phenomenon compensation methodes - Google Patents
Mura phenomenon compensation methodes Download PDFInfo
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- CN105590606B CN105590606B CN201610134095.5A CN201610134095A CN105590606B CN 105590606 B CN105590606 B CN 105590606B CN 201610134095 A CN201610134095 A CN 201610134095A CN 105590606 B CN105590606 B CN 105590606B
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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
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- Crystallography & Structural Chemistry (AREA)
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
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- Testing Of Optical Devices Or Fibers (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of Mura phenomenons compensation method, a gray scale being selected since several different gray scales of setting, LCD display panel after carrying out Mura compensation under the gray scale to the LCD display panel and compensating Mura carries out Mura compensation effect inspections under the gray scale, if Mura compensation effects are qualified, Mura compensation is no longer then carried out under the gray scale to the LCD display panel, carries out next gray scale;If Mura compensation effects are unqualified, then reacquire Mura offset data of the LCD display panel under the gray scale after preceding Mura compensation and continue Mura compensation and Mura compensation effect inspections, until Mura compensation effect of the LCD display panel under the gray scale is qualified, next gray scale is then carried out;It is finally completed Mura compensation of the LCD display panel under several different gray scales;Due to only carrying out multiple Mura compensation to needing to carry out the LCD display panel under the gray scale of multiple Mura compensation, so as to shorten the repair time of multiple Mura compensation, production efficiency is improved while improving product quality.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of Mura phenomenons compensation method.
Background technology
As liquid crystal display (Liquid Crystal Display, LCD) is towards lighter, thinner, bigger direction hair
Exhibition, because of some uncontrollable factors on actual processing procedure, has differences the physical characteristic of LCD display panel everywhere, causes big
In the range of a pixel, the phenomenon of brightness irregularities when showing pure gray level image, i.e., the Mura phenomenons alleged by industry.
Mura phenomenons have become the bottleneck for restricting LCD development.By improving technological level or improving material purity
The methods of can reduce the probability of happening of Mura phenomenons.It is fixed for the LCD display panel to have completed, its physical characteristic
Type, the Mura phenomenons produced to make up the flaw on LCD processing procedures, can correct picture by way of grey level compensation at this time
The brightness of vegetarian refreshments, and then improve Mura phenomenons.
Grey level compensation is to realize the improvement of brightness uniformity by varying the gray value of pixel:Shot by camera
The Mura situations of gray scale picture, it is then determined that normal region and Mura regions in gray level image, finally according to normal region
The gray value in gray value Contrary compensation Mura regions, when showing pure gray level image, is applied for the higher pixel of display brightness
Add relatively low gray value, for display brightness than relatively low pixel, apply higher gray value so that each pixel after grey level compensation
Brightness close to consistent, realize the improvement of Mura phenomenons.
Abnormal feelings are had occurred and that for more serious Mura (the luminance difference opposite sex is too big), or the electrical characteristic of liquid crystal
Condition, the Mura obtained grey level compensation values of compensation comparing calculation of software as a result, tend not to the repairing Mura of entirely accurate,
Need to repeat multiple Mura compensation operations, effect that will be after preceding Mura compensation is as Mura compensation operations next time
Original Mura images, re-shoot and calculate grey level compensation value, and result is added in previous grey level compensation result,
By multiple
Mura compensation operations obtain the best Mura offsets of effect, after being repaired as shown in Figure 1 for the compensation of Mura twice
The schematic diagram of Mura compensation effects qualified (display OK).
Existing repeatedly Mura compensation recovery technique flows, are all to carry out the picture of 3~5 gray scales of setting repeatedly
Shooting, exemplified by set 3 gray scales, as shown in Fig. 2, every time Mura compensation repair when can all shoot successively set by gray scale 1,
A preceding Mura can be compensated the effect after repairing by gray scale 2, gray scale 3 when needing to carry out twice or multiple Mura compensation is repaired
Fruit as next time repeat shooting " original Mura ", is repeated in shooting set gray scale 1, gray scale 2, gray scale 3.
The only more serious gray scale of Mura situations, just needs to repair using multiple Mura compensation, to reach up to specification
Effect;For the smaller gray scale of Mura situations, a Mura compensation, which is repaired, just can reach specification, if continuing repeatedly
The overall time that can then increase reparation is repaired in Mura compensation, and product production capacity can be greatly reduced.
The content of the invention
It is an object of the invention to provide a kind of Mura phenomenons compensation method, only to needing to carry out the ash of multiple Mura compensation
LCD display panel under degree is repeatedly repaired, so as to shorten the repair time of multiple Mura compensation, improves the same of product quality
Shi Tigao production efficiencys.
To achieve the above object, the present invention provides a kind of Mura phenomenons compensation method, comprises the following steps:
Step 1, provide a LCD display panel and camera, several different gray scales is set, with camera to the LCD display surfaces
The display picture for several different gray scales that plate is shown is shot respectively, and obtaining the LCD according to the image collected shows
Several Mura offset datas of the correspondence of panel several different gray scales;
Step 2, select a gray scale;
Step 3, with the correspondence obtained in step 1, the Mura offset datas of the selected gray scale exist the LCD display panel
Mura compensation is carried out under the selected gray scale;
Step 4, carry out Mura compensation effect inspections to the LCD display panel after Mura compensation under selected gray scale;
If Mura compensation effects are qualified, the corresponding finally Mura offset datas of the selected gray scale are recorded, it is selected to complete this
Mura compensation under gray scale, then jumps directly to step 6;
If Mura compensation effects are unqualified, continue step 5;
Step 5, the Mura benefits for reacquiring the LCD display panel corresponding selected gray scale after preceding Mura compensation
Repay data and continue Mura compensation, be then back to step 4;
Step 6, judge whether to complete the Mura compensation under all several gray scales;
If completing, terminate the compensation of Mura phenomenons;
If not completing, next gray scale and return to step 3 are selected.
The final Mura offset datas recorded in the step 4 are the complete of the correspondence that the obtains selected gray scale in step 1 and 5
The sum of the Mura offset datas in portion.
In the step 1, picture that the LCD display panel that is provided is shown include 0 gray scale and maximum gray scale including K
Gray scale, K are positive integer, are divided into K-1 gray scale interval by 0 to maximum gray scale, several different gray scales are selected from the K-1 gray scale
Section.
3-5 different gray scale is set in the step 1.
The maximum gray scale is 255 gray scales.
3 different gray scales are set in the step 1, are respectively the first gray scale, the second gray scale and the 3rd gray scale.
The step 5 specifically includes:Using camera to shown by the LCD display panel after preceding Mura compensation
The display picture of selected gray scale is shot, and the Mura for obtaining corresponding to the selected gray scale again according to the image collected compensates number
According in the case where this selectes gray scale carrying out Mura compensation again to LCD display panel using the Mura offset datas.
Camera shoots the LCD display panel in a fixed position.
Beneficial effects of the present invention:The present invention provides a kind of Mura phenomenons compensation method, from several different ashes of setting
Select a gray scale in degree to start, after carrying out Mura compensation under the gray scale to the LCD display panel and compensating Mura
LCD display panel carries out Mura compensation effect inspections under the gray scale, during the inspection process, if Mura compensation effects are qualified,
Mura compensation is no longer carried out under the gray scale to the LCD display panel, directly carries out next gray scale;If Mura compensation effects
It is unqualified, then reacquire Mura offset data of the LCD display panel after preceding Mura compensation under the gray scale simultaneously
Continue Mura compensation and Mura compensation effect inspections, until Mura compensation effect of the LCD display panel under the gray scale
Fruit is qualified, then carries out next gray scale;It is finally completed Mura compensation of the LCD display panel under several different gray scales;Due to
Multiple Mura compensation only is carried out to needing to carry out the LCD display panel under the gray scale of multiple Mura compensation, so as to shorten repeatedly
The repair time of Mura compensation, production efficiency is improved while improving product quality.
Brief description of the drawings
Below in conjunction with the accompanying drawings, by the way that the embodiment of the present invention is described in detail, technical scheme will be made
And other beneficial effects are apparent.
In attached drawing,
Fig. 1 is the schematic diagram of the Mura compensation effects qualification after the compensation of Mura twice is repaired;
Fig. 2 is the process block diagram of existing Mura phenomenons compensation method;
Fig. 3 is the flow chart of the Mura phenomenon compensation methodes of the present invention;
Fig. 4 is to carry out Mura compensation and Mura compensation effects in the preferred embodiment of the Mura phenomenon compensation methodes of the present invention
The process block diagram of inspection.
Embodiment
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with being preferable to carry out for the present invention
Example and its attached drawing are described in detail.
Fig. 3-4 are referred to, the present invention provides a kind of Mura phenomenons compensation method, comprises the following steps:
Step 1, provide a LCD display panel and camera, several different gray scales is set, with camera to the LCD display surfaces
The display picture for several different gray scales that plate is shown is shot respectively, and obtaining the LCD according to the image collected shows
Several Mura offset datas of the correspondence of panel several different gray scales.
Specifically, in the step 1,3-5 different gray scale is set.Preferably, referring to Fig. 4, in the preferred of the present invention
3 different gray scales are set in embodiment, in the step 1, are respectively the first gray scale, the second gray scale and the 3rd gray scale.
Further, K ash of the picture that the LCD display panel provided is shown including 0 gray scale and maximum gray scale
Degree, K is positive integer, is divided into (K-1) a gray scale interval by 0 to maximum gray scale, several different gray scales are selected from should (K-1) a ash
Spend section;Specifically, the maximum gray scale is 255 gray scales;Point of first gray scale, the second gray scale and the 3rd uniform gray level
It is distributed in 255 gray scale intervals.
Step 2, select a gray scale.
Specifically, it is selected first gray scale in a preferred embodiment of the invention.
Step 3, with the correspondence obtained in step 1 the selected gray scale Mura offset datas to LCD display panel in the choosing
Determine to carry out Mura compensation under gray scale.
Step 4, carry out Mura compensation effect inspections to the LCD display panel after Mura compensation under selected gray scale;
If Mura compensation effects are qualified, the corresponding finally Mura offset datas of the selected gray scale are recorded, are completed in the ash
Mura compensation under degree, then jumps directly to step 6;
If Mura compensation effects are unqualified, continue step 5.
Step 5, the Mura benefits for reacquiring the LCD display panel corresponding selected gray scale after preceding Mura compensation
Repay data and continue Mura compensation, be then back to step 4.
The step 5 specifically includes:Using camera to shown by the LCD display panel after preceding Mura compensation
The display picture of selected gray scale is shot, and the Mura for obtaining corresponding to the selected gray scale again according to the image collected compensates number
According in the case where this selectes gray scale carrying out Mura compensation again to LCD display panel using the Mura offset datas.
Particularly, the step 5 be for LCD display panel Mura situations than it is more serious, Mura compensation can not be passed through
Complete repair gray scale and multiple Mura compensation process is set, by multiple Mura compensation in above-mentioned Mura situations than more serious
Gray scale under LCD display panel repaired, lifted Mura compensation effects.
Further, the final Mura offset datas recorded in the step 4 are the correspondence choosing obtained in step 1 and 5
Determine the sum of whole Mura offset datas of gray scale, if selected gray scale does not pass through step 5, final Mura offset datas are
The Mura offset datas of the selected gray scale for the correspondence that is obtained in step 1, if for selecting gray scale, by multiple step 5, then most
Whole Mura offset datas are the Mura offset datas of the correspondence that is obtained in the step 1 selected gray scale and pass through step 5 each time
When the sum of the Mura offset datas that reacquire.
Step 6, judge whether to complete the Mura compensation under all several gray scales;
If completing, terminate the compensation of Mura phenomenons;
If not completing, next gray scale and return to step 3 are selected.
Specifically, it is to judge under the first gray scale, the second gray scale and the 3rd gray scale in a preferred embodiment of the invention
Mura compensation whether be fully completed, if completing the Mura compensation under the first gray scale, continue selected second gray scale and return
Step 3, if completing the Mura compensation of the first gray scale and the second gray scale, selected 3rd gray scale and return to step 3 are continued, if all
Complete, then terminate.
Specifically, in the step 1 and step 2, camera claps the LCD display panel in a fixed position
Take the photograph, it is preferred that the fixed position is located at the top of the central point of the LCD display panel.
In conclusion the present invention provides a kind of Mura phenomenons compensation method, selected from several different gray scales of setting
One gray scale starts, the LCD display surfaces after carrying out Mura compensation under the gray scale to the LCD display panel and compensating Mura
Plate carries out Mura compensation effect inspections under the gray scale, during the inspection process, if Mura compensation effects are qualified, no longer to described
LCD display panel carries out Mura compensation under the gray scale, directly carries out next gray scale;If Mura compensation effects are unqualified,
Reacquire Mura offset data of the LCD display panel under the gray scale after preceding Mura compensation and continue
Mura is compensated and Mura compensation effect inspections, until Mura compensation effect of the LCD display panel under the gray scale is qualified, so
After carry out next gray scale;It is finally completed Mura compensation of the LCD display panel under several different gray scales;Due to only to need into
LCD display panel under the gray scale of the multiple Mura compensation of row carries out multiple Mura compensation, so as to shorten multiple Mura compensation
Repair time, production efficiency is improved while improving product quality.
The above, for those of ordinary skill in the art, can be with technique according to the invention scheme and technology
Other various corresponding changes and deformation are made in design, and all these changes and deformation should all belong to the claims in the present invention
Protection domain.
Claims (8)
1. a kind of Mura phenomenons compensation method, it is characterised in that comprise the following steps:
Step 1, provide a LCD display panel and camera, sets several different gray scales, the LCD display panel is shown with camera
The display picture for the several different gray scales shown is shot respectively, and the LCD display panel is obtained according to the image collected
Correspondence several different gray scales several Mura offset datas;
Step 2, select a gray scale;
Step 3, the Mura offset datas for selecting with the correspondence obtained in step 1 gray scale are selected at this to the LCD display panel
Mura compensation is carried out under gray scale;
Step 4, carry out Mura compensation effect inspections to the LCD display panel after Mura compensation under selected gray scale;
If Mura compensation effects are qualified, the corresponding finally Mura offset datas of the selected gray scale are recorded, complete the selected gray scale
Under Mura compensation, then jump directly to step 6;
If Mura compensation effects are unqualified, continue step 5;
Step 5, the Mura compensation numbers for reacquiring the LCD display panel corresponding selected gray scale after preceding Mura compensation
According to and continue Mura compensation, be then back to step 4;
Step 6, judge whether to complete the Mura compensation under all several gray scales;
If completing, terminate the compensation of Mura phenomenons;
If not completing, next gray scale and return to step 3 are selected.
2. Mura phenomenons compensation method as claimed in claim 1, it is characterised in that the final Mura recorded in the step 4
Offset data is the sum of whole Mura offset datas of the correspondence that the obtains selected gray scale in step 1 and 5.
3. Mura phenomenons compensation method as claimed in claim 1, it is characterised in that in the step 1, the LCD provided is shown
Show K gray scale of the picture of Display panel including 0 gray scale and maximum gray scale, K is positive integer, and 0 to maximum gray scale is divided into
K-1 gray scale interval, several different gray scales are selected from the K-1 gray scale interval.
4. Mura phenomenons compensation method as claimed in claim 3, it is characterised in that 3-5 different ash is set in the step 1
Degree.
5. Mura phenomenons compensation method as claimed in claim 3, it is characterised in that the maximum gray scale is 255 gray scales.
6. Mura phenomenons compensation method as claimed in claim 4, it is characterised in that 3 different ashes are set in the step 1
Degree, is respectively the first gray scale, the second gray scale and the 3rd gray scale.
7. Mura phenomenons compensation method as claimed in claim 1, it is characterised in that the step 5 specifically includes:Utilize camera
The display picture of selected gray scale shown by LCD display panel after preceding Mura compensation is shot, according to adopting
The image collected obtains corresponding to again the Mura offset datas of the selected gray scale, using the Mura offset datas to LCD display surfaces
Plate carries out Mura compensation again in the case where this selectes gray scale.
8. Mura phenomenons compensation method as claimed in claim 1, it is characterised in that camera is in a fixed position to the LCD
Display panel is shot.
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Families Citing this family (13)
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CN106297691B (en) * | 2016-08-19 | 2017-10-10 | 京东方科技集团股份有限公司 | A kind of compensation data method and device of LCDs |
CN107086021B (en) * | 2017-04-20 | 2019-11-19 | 京东方科技集团股份有限公司 | The mura compensation system and method for display screen |
CN107221307A (en) | 2017-07-31 | 2017-09-29 | 京东方科技集团股份有限公司 | The compensation method of display module and compensation device |
CN107657932B (en) * | 2017-11-17 | 2019-10-18 | 深圳市华星光电半导体显示技术有限公司 | The gray scale compensation data detection method of liquid crystal display panel |
CN107909974B (en) * | 2017-11-21 | 2020-09-08 | 海信视像科技股份有限公司 | Pixel compensation method and device and television |
CN107945727B (en) * | 2017-11-23 | 2020-06-05 | 深圳市华星光电半导体显示技术有限公司 | Mura phenomenon compensation method and device |
CN108364615B (en) * | 2018-02-13 | 2021-06-29 | Tcl华星光电技术有限公司 | Mura compensation method and Mura compensation system |
CN108877612B (en) * | 2018-07-25 | 2022-05-17 | 昆山国显光电有限公司 | Mura compensation method and device for display screen, display screen and computer equipment |
CN109147685B (en) * | 2018-07-30 | 2020-01-31 | 深圳市华星光电半导体显示技术有限公司 | Mura compensation method |
CN111381834B (en) * | 2018-12-28 | 2023-09-19 | 深圳Tcl新技术有限公司 | Method for rapidly eliminating Mura of display panel |
CN110503923A (en) * | 2019-07-29 | 2019-11-26 | 惠州市德赛西威汽车电子股份有限公司 | A kind of method and device compensating display screen mura defect |
CN113327533B (en) * | 2021-05-20 | 2023-06-27 | Tcl华星光电技术有限公司 | Compensation data restoration method and compensation data restoration device for display device |
CN116312408A (en) * | 2023-02-23 | 2023-06-23 | 北京欧铼德微电子技术有限公司 | Color cast compensation method and compensation system |
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US8199074B2 (en) * | 2006-08-11 | 2012-06-12 | Chimei Innolux Corporation | System and method for reducing mura defects |
CN101470276A (en) * | 2007-12-27 | 2009-07-01 | Tcl集团股份有限公司 | Method and device for correcting luminous parameters of LCD device |
CN102722870B (en) * | 2011-05-26 | 2015-10-14 | 北京泰邦天地科技有限公司 | The geometry of the image in color photoelectric system and brightness distortion bearing calibration |
US9142190B2 (en) * | 2013-03-11 | 2015-09-22 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Method for compensating large view angle mura area of flat display panel |
US9202423B2 (en) * | 2013-09-03 | 2015-12-01 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LCD device, driving method of LCD panel, and mura compensating method |
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