CN105895043B - The Mura compensation methodes of display panel and Mura compensation devices - Google Patents
The Mura compensation methodes of display panel and Mura compensation devices Download PDFInfo
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- CN105895043B CN105895043B CN201610404408.4A CN201610404408A CN105895043B CN 105895043 B CN105895043 B CN 105895043B CN 201610404408 A CN201610404408 A CN 201610404408A CN 105895043 B CN105895043 B CN 105895043B
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 81
- 239000004973 liquid crystal related substance Substances 0.000 claims description 11
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- 230000008439 repair process Effects 0.000 abstract description 4
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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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Abstract
The invention discloses a kind of Mura compensation methodes of display panel comprising：Obtain the Mura offsets of each display panel in the display panel by the predetermined quantity produced on same production position；Mura compensation is carried out to the display panel of the same production production site according to the Mura offsets of each display panel of acquisition.The invention also discloses a kind of Mura compensation devices of display panel.The Mura offsets that the present invention passes through the display panel of the predetermined quantity of the same production production site of acquisition, one of Mura offsets using predetermined quantity or the Mura offsets being worth to by the Mura compensation of predetermined quantity carry out Mura compensation to all display panels produced on the same production position and repair, and production production capacity is improved while improving production efficiency.
Description
Technical field
The invention belongs to display technology fields, in particular, being related to Mura compensation methodes and the Mura of a kind of display panel
Compensation device.
Background technology
With the evolution of photoelectricity and semiconductor technology, the fluffy of flat-panel monitor (Flat Panel Display) has also been driven
The exhibition of breaking out, and in many flat-panel monitors, liquid crystal display (Liquid Crystal Display, LCD) is because having high-altitude
Between many advantageous characteristics such as utilization ratio, low consumpting power, radiationless and low EMI, be applied to production and living
Various aspects.
The display panel of LCD inevitably can cause the display panel of LCD bright in batch production because of some defective workmanships
It spends uneven, forms Mura of all kinds (bright trace or dark trace).In order to solve this problem, at present in the life of the display panel of LCD
In producing line, Mura reparations are carried out to each display panel, so that the display panel brightness of LCD is consistent.
However, since current Mura restorative procedures need the Mura of display panel progress to every LCD to repair
Journey, it is time-consuming longer, the production capacity of manufacturer has been seriously affected, the economic benefit of manufacturer is constrained.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of displays that can be improved production efficiency and improve production production capacity
The Mura compensation methodes of panel and compensation device.
According to an aspect of the present invention, a kind of Mura compensation methodes of display panel are provided comprising：It obtains by same
The Mura offsets of each display panel in the display panel of the predetermined quantity produced on production position；According to each aobvious of acquisition
Show that the Mura offsets of panel carry out Mura compensation to the display panel of the same production production site.
Optionally, according to the Mura offsets of each display panel of acquisition to the display surface of the same production production site
Plate carry out Mura compensation method include：Using a pair of Mura offsets of the predetermined quantity of acquisition, the same production position is given birth to
All display panels of production carry out Mura compensation.
Optionally, according to the Mura offsets of each display panel of acquisition to the display surface of the same production production site
Plate carry out Mura compensation method include：Go out a Mura mean compensation algorithms according to the Mura compensation value calculations of the predetermined quantity of acquisition
Value；Mura compensation is carried out to all display panels of the same production production site using calculated Mura average compensation values.
Optionally, the method for obtaining the Mura offsets of display panel includes：Obtain the gray scale image of display panel；Institute
It states in gray scale image, determines the target area that the display panel is blocked；Obtain the Mura compensation around the target area
Value；According to the Mura offsets around the target area, the Mura offsets of the target area are determined.
According to another aspect of the present invention, a kind of Mura compensation devices of display panel are provided comprising：Offset obtains
Modulus block is configured as obtaining each display panel in the display panel by the predetermined quantity produced on same production position
Mura offsets；Compensating module is configured as the Mura offsets according to each display panel of acquisition to the same production position
The display panel for setting production carries out Mura compensation.
Optionally, the compensating module is configured to a pair of the Mura offsets using the predetermined quantity obtained
All display panels of the same production production site carry out Mura compensation.
Optionally, the compensating module is configured to be gone out according to the Mura compensation value calculations of the predetermined quantity of acquisition
One Mura average compensation values, and using calculated Mura average compensation values to all display surfaces of the same production production site
Plate carries out Mura compensation.
Optionally, the offset acquisition module includes：Image acquisition unit is configured as obtaining the grayscale of display panel
Image；Area determination unit is configured as determining the target area that the display panel is blocked in the gray scale image；It mends
Value acquiring unit is repaid, is configured as obtaining the Mura offsets around the target area；Offset determination unit, is configured as
According to the Mura offsets around the target area, the Mura offsets of the target area are determined.
Optionally, the display panel is liquid crystal display panel.
The present invention is by obtaining the Mura offsets of the display panel of the predetermined quantity of same production production site, using pre-
One of Mura offsets of fixed number amount compensate the Mura offsets being worth to the same production by the Mura of predetermined quantity
All display panels produced on position carry out Mura compensation and repair, and production production capacity is improved while improving production efficiency.
Description of the drawings
What is carried out in conjunction with the accompanying drawings is described below, above and other aspect, features and advantages of the embodiment of the present invention
It will become clearer, in attached drawing：
Fig. 1 is the flow chart of Mura compensation methodes according to an embodiment of the invention；
Fig. 2 is a kind of schematic diagram of display panel according to an embodiment of the invention；
Fig. 3 is a kind of schematic diagram of Mura offsets according to an embodiment of the invention；
Fig. 4 is a kind of determining schematic diagram for dividing target area according to an embodiment of the invention；
Fig. 5 is another schematic diagram for determining division target area according to an embodiment of the invention；
Fig. 6 is the schematic diagram that another determination according to an embodiment of the invention divides target area；
Fig. 7 is the module map of Mura compensation devices according to an embodiment of the invention.
Specific implementation mode
Hereinafter, with reference to the accompanying drawings to detailed description of the present invention embodiment.However, it is possible to come in many different forms real
The present invention is applied, and the present invention should not be construed as limited to the specific embodiment illustrated here.On the contrary, providing these implementations
Example is in order to explain the principle of the present invention and its practical application, to make others skilled in the art it will be appreciated that the present invention
Various embodiments and be suitable for the various modifications of specific intended application.
Fig. 1 is the flow chart of Mura compensation methodes according to an embodiment of the invention.
Referring to Fig.1, in step s 110, it obtains every in the display panel by the predetermined quantity produced on same production position
The Mura offsets of one display panel.Here, the same production position refers to the same face on the production line of display panel
Plate produces film position.
Preferably, the display panel in the embodiment of the present invention is LCD (Liquid Crystal Display, liquid crystal display
Device) liquid crystal display panel.
The acquisition methods of the Mura offsets of the display panel used below to the present embodiment illustrate.Here it discloses
The acquisition methods of the Mura offsets of display panel are only a kind of illustrative methods, and the present invention is not limited in taking the present embodiment
The method of announcement obtains the Mura offsets of display panel, can also obtain display panel using other suitable methods
Mura offsets.
Optionally, as an implementation, for each display panel in the display panel of predetermined quantity, display is obtained
The method of the Mura offsets of panel includes：
First, the gray scale image of display panel is obtained.Specifically, display panel after the power is turned on, passes through camera or video camera
The picture (picture of display should be pure color picture) for shooting its display, is handled to obtain gray scale image to the picture of shooting.It answers
Understand, the weight of picture point can characterize the grayscale value of picture point in gray scale image.
Secondly, in the gray scale image, the target area that the display panel is blocked is determined.
Specifically, in gray scale image, grayscale value is less than to the region that the picture point of predetermined threshold value is constituted, is identified as display surface
The target area that plate is blocked.It is to be understood that the region that is blocked of display panel can not light transmission, cause captured image at this
The brightness in region is relatively low, thus corresponding grayscale value is smaller, may be implemented to determine the region that is blocked by this feature.
Optionally, predeterminable area is first determined in gray scale image, then determines what display panel was blocked in predeterminable area
Target area.The predeterminable area can be that designer is preset, occurring as designer according to shelter
Location determination；Can also be by counting determining, such as to occur according to preceding 100 shelters location determination.It can as one kind
The example of choosing, it is assumed that shelter is label, the position that designer is generally placed on a display panel according to label, set out as
Predeterminable area shown in Fig. 2, the predeterminable area cover all positions being likely to occur in target area.As it can be seen that pre- by setting
If region, it is not necessary to search for target area in entire gray scale image, reduce search range, save search time.
Again, the Mura offsets around the target area are obtained.
Specifically, it first determines the reference grayscale value of gray scale image, then obtains the actual gray value around target area, finally
According to grayscale value and actual gray value is referred to, the Mura offsets around target area are calculated.During specific implementation, please refer to
Fig. 3, it is assumed that A indicates the grayscale value curve of gray scale image, and the reference grayscale value of gray scale image is 25, includes p1 around target area
Region and the regions p3, the actual gray value in the regions p1, which is more than, refers to grayscale value (25~35), and the actual gray value in the regions p3 is less than
With reference to grayscale value (25~15), then according to grayscale value and actual gray value is referred to, calculated Mura offsets can be such as song
Shown in line B, the Mura offsets in the regions p1 are that the Mura offsets in the 0~-regions 10, p3 are 0~10, it is seen that superimposed curves A with
Curve B can just make the grayscale value in the regions p1 and the regions p3 revert to reference gray level value.
Finally, according to the Mura offsets around the target area, the Mura offsets of the target area are determined.
It should be noted that the process that Mura occurs in display panel is usually gradual change, thus the grayscale value of gray scale image
It is also gradual change.So, although the grayscale value for the target area being blocked can not determine, it may infer that the grayscale of target area
Value is approximately equal to the grayscale value around target area.By this feature, the Mura that may be implemented around according to target area is mended
Repay the Mura offsets that value determines target area.
As an alternative embodiment, assuming that shelter is the label of a rectangle, then according to target area week
The Mura offsets enclosed determine that the mode of the Mura offsets of target area includes：
Mode one, as shown in figure 4, first obtaining the Mura compensation of the upper area and lower area outside target area respectively
Value, then the area ratio of upper area and lower area is calculated, target area is then divided into upper and lower two according to area ratio
Part, finally using the Mura offsets of upper area as the Mura offsets of the upper part of target area, and by lower region
Mura offset of the Mura offsets in domain as the lower part of target area.
Mode two, as shown in figure 5, first obtaining the Mura compensation of the left region and right areas outside target area respectively
Value, then the area ratio of left region and right areas is calculated, target area is then divided into left and right two according to area ratio
Part, finally using the Mura offsets of left region as the Mura offsets of the left half of target area, and by right part area
Mura offset of the Mura offsets in domain as the right half of target area.Present embodiment can be directed to left and right width
Relatively narrow bar shaped label.
Mode three, as shown in fig. 6, first obtaining upper area, lower area, left region and the right side outside target area respectively
The Mura offsets in portion region, then the area ratio of upper area, lower area, left region and right areas is calculated, then
Target area is divided into four part of up, down, left and right according to area ratio, finally using the Mura offsets of left region as
The Mura offsets of the left half of target area, using the Mura offsets of right areas as the Mura of the right half of target area
Offset, using the Mura offsets of left region as the Mura offsets of the left half of target area, and by right areas
Mura offsets as target area right half Mura offsets.
It should be noted that above-mentioned three kinds of modes are example provided in an embodiment of the present invention, the present invention should not be constituted
It limits, similar other embodiment also belongs to protection scope of the present invention.
Further, after determining the Mura offsets of target area, by the Mura of itself and other regions in display panel
Offset is integrated, as the Mura offsets of display panel entirety, the gray value of Contrary compensation display panel, so that display
Panel luminance is consistent.
Therefore the embodiment of the present invention, the gray scale image of display panel is first obtained, then display is determined in gray scale image
The target area that panel is blocked, and then determine that the Mura of target area is compensated according to the Mura offsets around target area
Value may be implemented the region being blocked in the display panel to LCD and carry out Mura compensation.
In the step 120, according to the Mura offsets of each display panel of acquisition to the same production production site
Display panel carries out Mura compensation.
Specifically, as an implementation, same all one's life using a pair of the Mura offsets of the predetermined quantity of acquisition
All display panels for producing production site carry out Mura compensation.For example, one of Mura offsets of the predetermined quantity of acquisition are burnt
In the memory for recording all display panels of the same production production site, then on a display panel after electricity, display surface
The sequence controller of plate reads out the Mura offsets of its storage from memory, to carry out Mura to the display of display panel
Compensation.
As another embodiment, a Mura mean compensation algorithms are gone out according to the Mura compensation value calculations of the predetermined quantity of acquisition
Value；Mura compensation is carried out to all display panels of the same production production site using calculated Mura average compensation values.
For example, after the Mura offsets of the predetermined quantity of acquisition are summed divided by the predetermined quantity, a Mura average compensation values are obtained,
The Mura average compensation values are burnt in a memory of all display panels of the same production production site, then aobvious
Showing panel after the power is turned on, the sequence controller of display panel reads out the Mura average compensation values of its storage from memory, to
Mura compensation is carried out to the display of display panel.
To sum up, by obtaining the Mura offsets of the display panel of the predetermined quantity of same production production site, using pre-
One of Mura offsets of fixed number amount compensate the Mura offsets being worth to the same production by the Mura of predetermined quantity
All display panels produced on position carry out Mura compensation and repair, and production production capacity is improved while improving production efficiency.
Fig. 7 is the module map of Mura compensation devices according to an embodiment of the invention.
With reference to Fig. 7, Mura compensation devices according to an embodiment of the invention include：Offset acquisition module 710, compensation mould
Block 720.
Offset acquisition module 710 is configured as obtaining the display panel of the predetermined quantity by producing on same production position
In each display panel Mura offsets；Compensating module 720 is configured as being mended according to the Mura of each display panel of acquisition
It repays value and Mura compensation is carried out to the display panel of the same production production site.Here, the same production position refers to
Same panel production film position on the production line of display panel.
The offset acquisition module 710 of the present embodiment is illustrated below.Here the offset acquisition module 710 disclosed
Only it is a kind of example, the present invention is not limited thereto.
Optionally, offset acquisition module 710 includes：Image acquisition unit 711, area determination unit 712, offset obtain
Take unit 713, offset determination unit 714.
Image acquisition unit 711 is configured as obtaining the gray scale image of display panel.
Preferably, the display panel in the embodiment of the present invention is LCD (Liquid Crystal Display, liquid crystal display
Device) liquid crystal display panel.
Specifically, display panel after the power is turned on, shooting the picture that it shows by camera or video camera, (answer by the picture of display
For pure color picture), the picture of shooting is handled to obtain gray scale image.It should be understood that the depth of picture point in gray scale image
Degree can characterize the grayscale value of picture point.
Area determination unit 712 is configured as determining the target area that the display panel is blocked in the gray scale image
Domain.
Specifically, in gray scale image, grayscale value is less than to the region that the picture point of predetermined threshold value is constituted, is identified as display surface
The target area that plate is blocked.It is to be understood that the region that is blocked of display panel can not light transmission, cause captured image at this
The brightness in region is relatively low, thus corresponding grayscale value is smaller, may be implemented to determine the region that is blocked by this feature.It is optional
Ground first determines predeterminable area in gray scale image, then the target area that determining display panel is blocked in predeterminable area.
Offset acquiring unit 713 is configured as obtaining the Mura offsets around the target area.
Specifically, offset acquiring unit 713 is configured to first determine the reference grayscale value of gray scale image, then obtains
The actual gray value around target area is taken, finally according to grayscale value and actual gray value is referred to, is calculated around target area
Mura offsets.
Offset determination unit 714 is configured as, according to the Mura offsets around the target area, determining the mesh
Mark the Mura offsets in region.
Specifically, offset acquiring unit 713 be configured to obtain respectively upper area outside target area and
Mura offsets of lower area, then calculate the area ratio of upper area and lower area, then according to area ratio by mesh
Mark region division is upper and lower two parts, finally using the Mura offsets of upper area as the Mura of the upper part of target area
Offset, and using the Mura offsets of lower area as the Mura offsets of the lower part of target area.
Alternatively, offset acquiring unit 713 be configured to first obtain respectively left region outside target area and
Mura offsets of right areas, then calculate the area ratio of left region and right areas, then according to area ratio by mesh
Mark region division is left and right two parts, finally using the Mura offsets of left region as the Mura of the left half of target area
Offset, and using the Mura offsets of right areas as the Mura offsets of the right half of target area.Present embodiment
The bar shaped label of left and right narrower width can be directed to.
Alternatively, offset acquiring unit 713 be configured to first obtain respectively upper area outside target area, under
The Mura offsets in portion region, left region and right areas, then calculate upper area, lower area, left region and right part
Then target area is divided into four part of up, down, left and right, finally by left part by the area ratio in region according to area ratio
Mura offset of the Mura offsets in region as the left half of target area, using the Mura offsets of right areas as mesh
The Mura offsets for marking the right half in region are mended the Mura offsets of left region as the Mura of the left half of target area
Value is repaid, and using the Mura offsets of right areas as the Mura offsets of the right half of target area.
The compensating module of the present embodiment 720 is illustrated below.
Specifically, as an implementation, compensating module 720 is configured to utilize the predetermined quantity obtained
All display panels of a pair of Mura offsets same production production site carry out Mura compensation.
As another embodiment, compensating module 720 is configured to the Mura of the predetermined quantity according to acquisition
Compensation value calculation goes out a Mura average compensation values；Using calculated Mura average compensation values to the same production production site
All display panels carry out Mura compensation.
Although the present invention has shown and described with reference to specific embodiment, it should be appreciated by those skilled in the art that：
In the case where not departing from the spirit and scope of the present invention limited by claim and its equivalent, can carry out herein form and
Various change in details.
Claims (6)
1. a kind of Mura compensation methodes of display panel, which is characterized in that including：
Obtain the Mura offsets of each display panel in the display panel by the predetermined quantity produced on same production position；
Mura is carried out to the display panel of the same production production site according to the Mura offsets of each display panel of acquisition
Compensation；
Wherein, the display panel of the same production production site is carried out according to the Mura offsets of each display panel of acquisition
Mura compensation method include：
Utilize all display panels progress of a pair of Mura offsets of the predetermined quantity of acquisition same production production site
Mura is compensated；
Alternatively, going out a Mura average compensation values according to the Mura compensation value calculations of the predetermined quantity of acquisition；Using calculated
Mura average compensation values carry out Mura compensation to all display panels of the same production production site.
2. Mura compensation methodes according to claim 1, which is characterized in that obtain the side of the Mura offsets of display panel
Method includes：
Obtain the gray scale image of display panel；
In the gray scale image, the target area that the display panel is blocked is determined；
Obtain the Mura offsets around the target area；
According to the Mura offsets around the target area, the Mura offsets of the target area are determined.
3. Mura compensation methodes according to claim 1, which is characterized in that the display panel is liquid crystal display panel.
4. a kind of Mura compensation devices of display panel, which is characterized in that including：
Offset acquisition module is configured as obtaining each in the display panel by the predetermined quantity produced on same production position
The Mura offsets of display panel；
Compensating module is configured as the Mura offsets according to each display panel of acquisition to the same production production site
Display panel carries out Mura compensation；
Wherein, be configured to a pair using the Mura offsets of the predetermined quantity obtained this is same for the compensating module
All display panels for producing production site carry out Mura compensation；It is obtained alternatively, the compensating module is configured to basis
The Mura compensation value calculations of the predetermined quantity taken go out a Mura average compensation values, and utilize calculated Mura average compensation values pair
All display panels of the same production production site carry out Mura compensation.
5. Mura compensation devices according to claim 4, which is characterized in that the offset acquisition module includes：
Image acquisition unit is configured as obtaining the gray scale image of display panel；
Area determination unit is configured as determining the target area that the display panel is blocked in the gray scale image；
Offset acquiring unit is configured as obtaining the Mura offsets around the target area；
Offset determination unit is configured as, according to the Mura offsets around the target area, determining the target area
Mura offsets.
6. Mura compensation devices according to claim 4, which is characterized in that the display panel is liquid crystal display panel.
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| CN106328079B (en) * | 2016-08-25 | 2019-02-26 | 深圳市华星光电技术有限公司 | Image brightness compensation method and compensating module |
| CN107025891B (en) * | 2017-03-23 | 2019-05-10 | 武汉精测电子集团股份有限公司 | A kind of display module defect fast repairing method and system |
| CN106952627B (en) | 2017-05-03 | 2019-01-15 | 深圳市华星光电技术有限公司 | A kind of mura phenomenon compensation method of display panel and display panel |
| CN107195270B (en) * | 2017-07-28 | 2020-01-07 | 京东方科技集团股份有限公司 | Brightness compensation method and device of display panel |
| 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 |
| CN108377386B (en) * | 2018-01-31 | 2020-03-17 | 四川长虹电器股份有限公司 | De-Mura method for complete liquid crystal display television |
| 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 |
| CN110459162B (en) | 2019-08-30 | 2021-07-23 | 霸州市云谷电子科技有限公司 | Brightness compensation data acquisition method, device and equipment |
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| KR101201314B1 (en) * | 2005-11-16 | 2012-11-14 | 엘지디스플레이 주식회사 | Method of Fabricating Flat Display Panel |
| TWI375198B (en) * | 2007-05-17 | 2012-10-21 | Tpo Displays Corp | A system for displaying images |
| 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 |
| CN105070273B (en) * | 2015-09-02 | 2017-07-28 | 深圳市华星光电技术有限公司 | The luminance compensation method in Mura regions and the design method of Mura pixel brightness |
| CN105244001B (en) * | 2015-11-09 | 2018-01-09 | 深圳市华星光电技术有限公司 | A kind of method and device of determination mura offsets |
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