CN108682365A - A kind of detection of OLED color spots with repair integral system, method - Google Patents
A kind of detection of OLED color spots with repair integral system, method Download PDFInfo
- Publication number
- CN108682365A CN108682365A CN201810349109.4A CN201810349109A CN108682365A CN 108682365 A CN108682365 A CN 108682365A CN 201810349109 A CN201810349109 A CN 201810349109A CN 108682365 A CN108682365 A CN 108682365A
- Authority
- CN
- China
- Prior art keywords
- picture
- brightness
- panel
- oled
- oled panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention belongs to panel detection technical field, discloses a kind of OLED color spots detection and repair integral system, method, system includes computing unit, optical measurement unit and driving unit；Driving unit acts on panel to drive it to light the white picture of different grayscale；Optical measurement unit measures picture and colour measurement picture for shooting pixel intensity of the panel under white picture under the triggering of driving unit；Computing unit is used to obtain the brightness of each pixel according to the brightness measurement picture, colour measurement picture and coloration and determines therefrom that color spot type and grade；And the offset data in each channels R/G/B is calculated according to the brightness of each grayscale and colorimeter and is converted to the receivable format of driving chip of panel and is sent in the memory of panel；It calls the offset data in memory to treat under the control of demura enabled state registers and repairs panel progress color spot reparation；The present invention will reduce 2/3 the testing time, and significant increase color spot detection compensation work efficiency simultaneously makes the brightness uniformity of white picture compensate more preferably.
Description
Technical field
The invention belongs to display technology field, more particularly, to a kind of OLED color spots detect with repair integral system,
Method.
Background technology
Due to the limitation of crystallization process, the low-temperature polysilicon film transistor that is made in large-area glass substrate
The thin film transistor (TFT) (TFT) of (LTPS TFT), different location usually have on the electrical parameters such as threshold voltage, mobility
There is heterogeneity, this heterogeneity can be converted into the current difference and luminance difference of OLED display devices, and be felt by human eye
Know, i.e. mura (color spot) phenomenon.Mura recovery techniques are a kind of elimination display mura phenomenons, make the uniform skill of picture brightness
Art.
A kind of elimination OLED of the prior art for example disclosed in the Chinese patent application No. is 201610200089.5 is shown
The method of panel Mura first passes through the local gamma value selection under the gamma value and current display grayscale of comparison OLED display panel
Corresponding calculation formula the compensation grayscale that should be used is calculated, then enables OLED display panel show currently available compensation
Grayscale, and judge whether to reach the preset condition for terminating compensation grayscale and calculating, if not reaching preset end compensation grayscale
The condition of calculating is then constantly iterated and calculates until reaching the preset condition for terminating compensation grayscale and calculating, can fast have
OLED display panel mura is eliminated on effect ground, is ensured the brightness uniformity of OLED display panel, is promoted the display product of OLED display panel
Matter.But the technical solution is repaired time-consuming longer more due to needing iterations.
A kind of OLED Mura for example disclosed in the Chinese patent application No. is 201610911121.0 are compensated most again
High brightness optimization method and device, method include：Input display panel luminance matrix；By the liquid crystal panel lightness matrix into
Row subregion；The brightness value of the sampled point of each subregion of acquisition；To the sampled point two-by-two between calculate, it is new to obtain it
Brightness value；Object brightness is calculated based on the sampling point position and the new brightness value, to obtain object brightness square
Battle array；Export the object brightness matrix of the liquid crystal display panel；The invention can improve brightness to a certain extent, reduce simultaneously
Mura phenomenons；But the technical solution is concerned only with brightness and does not pay close attention to coloration problem, therefore cannot be compensated to colour cast.
From the point of view of comprehensive existing OLED color spots recovery technique, be mostly based on R G tri- different grayscale of color of B it is independent
Shooting extraction brightness compensates, and has the disadvantage that：
A, time-consuming, by taking each 6 grey menus of R/G/B as an example, needs to shoot 18 width pictures, the low exposure of low gray-scale intensity altogether
When it is longer；
B, since OLED drive is there are current limit, electric current and the multichannel of single channel picture (R/G/B pictures) are drawn
The not simple superposition of the electric current in face (such as white picture) or the IRDROP of linear relationship and R/G/B pictures may be different
In the IRDROP of white picture, individually extracts brightness and compensate and sprite can be compensated preferably, but the compensation number
It cannot reach best according to the compensation effect for multichannel pictures；
C, due to the presence that electric current limits, the sum of current value of RGB sprites is more than white picture electric current, and compensation is monochromatic
Picture cannot be equal to compensation white picture, thus poor for the compensation ability of colour cast class Mura, and before cannot assessing compensation
Chroma offset situation afterwards.
Invention content
Extremely a little less in disadvantages described above or Improvement requirement for the prior art, the present invention provides a kind of OLED color spots
Detection with repair integral system, method, its object is to by it is existing based on R G the different grayscale of tri- colors of B individually clap
It takes the photograph brightness data and chroma data that the mode that extraction brightness compensates is changed to only be extracted with white picture to compensate, thus
The efficiency for improving the detection of OLED color spots and repairing.
To achieve the above object, according to one aspect of the present invention, it provides a kind of detection of OLED color spots and repairs one
Change system, including computing unit, optical measurement unit, driving unit；
Wherein, optical measurement unit is connect with computing unit, and driving unit acts on oled panel to be measured, is waited for for driving
It surveys panel and lights pretreatment picture, and for driving oled panel to be measured to light the white picture of different grayscale；White picture number
Amount, grayscale are set according to the requirement of the Demura circuit function modules of oled panel to be measured in advance；
Optical measurement unit be used under the triggering of driving unit shooting obtain measured panel under above-mentioned pretreatment picture,
Pixel intensity under white picture measures the colour measurement picture of picture and block level；
Computing unit is used to obtain brightness and the coloration and for according to the brightness of pixel of each pixel according to above-mentioned picture
Color spot type and grade are determined with coloration；
And the offset data for calculating each channels R/G/B according to the brightness and chroma data of each grayscale, and convert
It is sent in the memory of measured panel for the receivable format of driving chip of measured panel；
After measured panel energization, color spot repair function is enabled by demura enabled state registers and calls above-mentioned deposit
The data of storage carry out color spot reparation to measured panel.
Preferably, above-mentioned OLED color spots detection and reparation integral system further include that complementary environment position control is single
Member；
Environment position control unit includes darkroom, cleaner, panel alignment mechanism, optical path adjusting mechanism；
Darkroom is for accommodating measured panel and optical measurement unit, to ensure environment low-light (level), excludes ambient light to measuring
Influence；
Cleaner is located in darkroom, for removing the dust in environment, to eliminate dust to high-precision brightness measurement
It influences；
Panel alignment mechanism makes measured panel center be in light for placing measured panel to adjust the position of measured panel
On the optical axis on road, measured panel plane be parallel to camera plane；
Optical path adjusting mechanism is connected with optical measurement unit, the spacing of camera and measured panel for optical measurement unit
From and the size of aperture, focusing ring position.
Preferably, the detection of above-mentioned OLED color spots with repair integral system, optical measurement unit includes brightness arranged side by side
Measuring unit and colour measurement unit；Brightness measurement unit and colour measurement unit simultaneously shoot measured panel；Brightness
Measuring unit shooting obtains the brightness measurement picture of measured panel pixel；Colour measurement unit photographs obtain measured panel block grade
Other colour measurement picture.
Purpose to realize the present invention, it is another aspect of this invention to provide that being detected based on above-mentioned OLED color spots and repairing one
Change system provides a kind of detection of OLED color spots and restorative procedure, includes the following steps：
(1) pre-treatment step；
(1.1) driving measured panel lights initial assessment picture, right simultaneously by brightness measurement unit and colour measurement unit
Measured panel carries out shooting and obtains brightness measurement picture and colour measurement picture, by computing unit by brightness measurement picture and coloration
Measure brightness and chrominance information that picture is respectively converted into pixel scale；Initial assessment picture is 1 or multiple and different grayscale
White picture；
(1.2) Mura is carried out according to above-mentioned brightness and chrominance information and initially sentences grade；For being determined as the panel of non-defective unit then
It is sent to the other processes of normal process flow；For being judged to that the measured panel for carrying out color spot reparation is needed then to enter step
(1.3) processing；
(1.3) by bad point, bad line be more than setting value measured panel be determined as abnormal article, flow it into do over again station or
Manually station is sentenced again；The measured panel of bad point, bad line in setting value is transferred to step (2) and carries out color spot compensation deals.
(2) color spot compensation process；
Driving measured panel lights the white picture of different grayscale, and measured panel often lights a white picture, by brightness
Measuring unit and colour measurement unit simultaneously shoot the display picture of measured panel, the brightness measurement picture and color of acquisition
Degree measures brightness and the chroma data that picture is respectively converted into each pixel by computing unit；
Wherein, white picture quantity grayscale is by artificial pre-set, the Demura circuit function moulds according to measured panel
The requirement of block is set.
(3) computing unit calculates offset data according to the brightness and chroma data of each grayscale, and is converted to tested surface
Format needed for the driving chip of plate；It is sent in the memory of measured panel；
(4) enabling color spot repair function calls the data of above-mentioned storage to carry out color spot reparation.
Preferably, above-mentioned OLED color spots detection and restorative procedure, further include following steps：
(5) the assessment picture that shooting measured panel is shown after color spot reparation is enabled calculates according to assessment picture and obtains JND
Value or Semu values, obtain the color spot evaluation grade of measured panel.
Preferably, above-mentioned OLED Demura methods, in step (3), the quantity of white picture and the grayscale root of picture
It is preset according to the requirement of the Demura circuit function modules of measured panel.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect：
(1) OLED color spots detection provided by the invention and reparation integral system and method, by extracting white picture
Brightness data and chroma data combine, both realized R G B individually compensate, also compensate for the W pictures that current limit is brought
With R G the inconsistent influence of B picture defect, so that the brightness uniformity of white picture is compensated more preferably；It is only measured with the prior art
Sprite brightness, the method for compensating sprite brightness are compared, and system and method for the invention is surveyed under white picture
The method of amount and compensation, the compensation effect of brightness and coloration to white picture are more preferable；
(2) OLED color spots provided by the invention detection with repair integral system and method, due to need not to R G B tri-
The different grayscale of a color individually shoots extraction brightness and compensates, and it is only necessary to handle white picture, when test
Between reduce 2/3, can greatly shorten test period promoted testing efficiency；And since measurement brightness is carried out in white picture,
There is the current limit of white picture when measurement, thus offset data can eliminate the influence of current limit；And existing skill
When art uses R/G/B measuring pictures, the influence of white picture current limit is not accounted for；In comparison, skill of the invention
Art can mitigate panel currents limitation influence, make white picture relative to other compensation method brightness evenly；Due to colour measurement
Unit obtains color coordinate information, therefore can compensate colour cast Mura.
Description of the drawings
Fig. 1 is the system block diagram of one embodiment of OLED Demura systems provided by the invention；
Fig. 2 is the workflow schematic diagram of one embodiment of OLED Demura systems provided by the invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
It does not constitute a conflict with each other and can be combined with each other.
One embodiment provided by the invention OLED color spots detection and repair integral system, system referring to Fig.1, are wrapped
Include computing unit, optical measurement unit and driving unit；
Wherein, optical measurement unit is connect with computing unit, and driving unit acts on oled panel to be measured, is waited for for driving
It surveys panel and lights pretreatment picture, and for driving oled panel to be measured to light the white picture of different grayscale；White picture
Quantity and grayscale are pre-set according to the requirement of the Demura circuit function modules of oled panel to be measured；
Optical measurement unit is used for the shooting under the triggering of driving unit and obtains oled panel to be measured in above-mentioned pretreatment picture
Pixel intensity under face, under white picture measures the colour measurement picture of picture and block level；Computing unit is used for basis
Above-mentioned picture obtains brightness and the coloration and for according to the brightness and coloration of pixel determining color spot type and grade of each pixel；
And the offset data for calculating each channels R/G/B according to the brightness and chroma data of each grayscale, and be converted to tested surface
The receivable format of driving chip of plate is sent to the memory of measured panel for example in Flash or Ram；
After measured panel energization, decided whether to open Demura effects by the value in demura enabled state registers
Fruit is enabled, if enabled, the Demura data storage areas that Ram respond from Flash downloads offset data, and will verify and with
It verification in flash data and is compared, if the two is identical, Demura circuit function modules are started to work, and are mended
Effect is repaid to show；If the two is inconsistent, Demura circuit function modules do not work.
Driving unit in embodiment it include picture signal generator (pattern generator, PG), response line
Material and pinboard；Optical measurement unit includes brightness measurement unit and colour measurement unit arranged side by side；Brightness measurement unit and color
Degree measuring unit simultaneously shoots the image shown by measured panel；Brightness measurement unit photographs obtain measured panel pixel
Brightness measurement picture, colour measurement unit photographs obtain measured panel block level colour measurement picture.It is bright in embodiment
It includes high-resolution low noise black-white CCD/CMOS cameras, Y-Filter and camera lens to spend measuring unit；Colour measurement unit has
There are many realization method, for example combinations of color camera combination camera lens or black and white camera color combining filter wheel and camera lens.
With reference to Fig. 2, be the OLED color spots detection provided using embodiment with repair integral system carry out color spot detection with
The flow of the method for reparation is as follows：
(1) pre-treatment step；
(1.1) driving measured panel lights initial assessment picture, right simultaneously by brightness measurement unit and colour measurement unit
Measured panel carries out shooting and obtains brightness measurement picture and colour measurement picture, by computing unit by brightness measurement picture and coloration
Measure brightness and chrominance information that picture is respectively converted into pixel scale；Initial assessment picture is 1 or multiple and different grayscale
White picture；
(1.2) Mura is carried out according to above-mentioned brightness and chrominance information and initially sentences grade；For being determined as the panel of non-defective unit then
It is sent to the other processes of normal process flow；To being judged to that the measured panel for carrying out color spot reparation is needed then to enter step
(1.3) processing；
(1.3) by bad point, bad line be more than setting value measured panel be determined as abnormal article, flow it into do over again station or
Manually station is sentenced again；The measured panel of bad point, bad line in setting value is transferred to step (2) and carries out color spot compensation deals.
In the pre-treatment step of embodiment, further includes using geometry location picture, corrects picture for example DotMirror
The positioning carried out as pretreatment picture and calibration process；Brightness measurement unit and colour measurement unit are aobvious to measured panel simultaneously
The pretreatment picture shown is shot, and is accurately positioned to the R/G/B sub-pixels of panel according to the picture of shooting, and positioning needs
Unit of account is carried out at the same time the picture captured by brightness measurement unit and colour measurement unit the two units, to brightness measurement
Unit and colour measurement unit can be used identical or different method and positioned；Localization method is that general technology does not repeat.
(2) color spot compensation process；
Driving measured panel lights the white picture of different grayscale；Measured panel often lights a white picture, by brightness
Measuring unit and colour measurement unit simultaneously shoot the display picture of measured panel, the brightness measurement picture and color of acquisition
Degree measures brightness and the chroma data that picture is respectively converted into each pixel by computing unit；
Wherein, white picture quantity, grayscale are in advance according to the requirement setting of the Demura circuit function modules of measured panel；
It may be configured as 6~7 grayscale, it is 16,32,64,96,128,192,255 that grayscale, which is set gradually, in embodiment.
Brightness measurement picture and colour measurement picture are converted to the brightness of each pixel and turning for coloration by computing unit
It is as follows to change mode：Here it only illustrates and does not limit.
When brightness measurement unit uses the scheme of black and white camera+Y Filter filters：In aperture, time for exposure, camera
Under the conditions of gain is fixed, camera response and the intrinsic brilliance of object under test have determining one-to-one relationship f1.Camera
Multiple pixels correspond to a pixel of measured panel, and computing unit obtains camera pixel and measured panel pixel in pretreatment
Camera pixel response corresponding to each panel pixel is added up and is averaged, which is made by position correspondence
For the relative measurement brightness Brt2 of the panel pixel, Brt2 is subjected to f1 relationship maps, obtains intrinsic brilliance Brt1.Each grayscale
Pixel intensity can be obtained by aforesaid way.
When brightness measurement unit uses color camera：Under the conditions of aperture, time for exposure, camera gain are fixed, phase
Machine, which responds (RGB) and the intrinsic brilliance of object under test, has determining correspondence f2.Multiple pixels of camera correspond to measured panel
A pixel, computing unit obtains camera pixel to the position correspondence of measured panel pixel in pretreatment, will be each
Camera pixel response corresponding to a panel pixel, which adds up, averages, and obtains measured value (RGB) measure.
According to the relationship of (RGB) and brightness Brt of known camera itself, Brtmeasure is obtained.
Brt=d*R+e*G+f*B；Wherein, d, e, f are the conversion coefficient of camera；The Brtmeasure and reality of the camera
Brightness Brt has determining one-to-one relationship f2.Brtmeasure is subjected to f2 relationship maps, obtains intrinsic brilliance Brt.
When colour measurement unit uses the scheme of black and white camera+the color filter wheel：The white of each Zhang Butong grayscale is drawn
Face is required for being shot respectively once with the filter of R colors and the filter of B colors, is eventually converted into the CIE1931 of each point of camera
Chromatic value (X, Y, Z).
When colour measurement unit uses the scheme of color camera：The white board face of each Zhang Butong grayscale, all shoots one
Secondary, what is got is the coloured image of RGB, is eventually converted into the CIE1931 chromatic values (X, Y, Z) of each point of camera.
(3) computing unit calculates offset data according to the brightness and chroma data of each grayscale, and is converted to tested surface
Format needed for the driving chip of plate；
The method that the brightness obtained according to white picture and chroma data obtain offset data is as follows：Here it only illustrates not
It limits.
OLED color spots detect brightness and the coloration that the white picture under different grayscale is got from reparation integral system；With
For CIE1931 standards, brightness measurement submodule has got the brightness square of the brightness data composition of each pixel under different grayscale
Battle array LvMatrix, colour measurement submodule got the chromaticity coordinates matrix (x of each Block chromaticity coordinates composition under different grayscaleMatix,
yMatix)。
Each input [R, G, B] put determines the visual effect [Lv, x, y] of human eye, Lv and x and y three on panel
It is related not independent.(Lv, x, y) coordinate is converted to (X, Y, Z) first；
Y=Lv
X=(Y/y) * x
Z=(Y/y) * (1-x-y)
(R, G, B) and (X, Y, Z) are approximately linear transformation relationship, i.e.,
Input value [R, G, B] n of known each (>=3) white grey menus, and measured and acquired this
[X, Y, Z] under several grayscalen, it is possible thereby to obtain coefficient matrix [a, b, c；d,e,f；G, h, i] occurrence.It is being mended
When repaying, object brightness and coloration [X, Y, Z]destAccording to the practical specifications parameter of panel or specific acquisition, then
Original input value is subtracted by target input value, that is, obtains offset [Δ R, Δ G, Δ G]
In actual use, [R, G, B] may be unsatisfactory for linear relationship with [X, Y, Z] in entire grayscale segment, but divide
Section is approximately linear relationship, therefore piece wire approximation can be used and can get better compensation effect, for example with 0~16,16~
64, it 64~128,128~255 is segmented.
(4) data after format conversion are sent to the memory of measured panel for example in Flash or Ram；Write-in side
Formula includes the write-in of the channels MIPI and the write-in of the external channels SPI, is not repeated for this place of general technology at present.
(5) enabled color spot repair function calls the data of above-mentioned storage to carry out color spot reparation after measured panel is powered；And
Shooting assessment picture, assesses Mura grades；
The white picture of 1 or multiple and different grayscale can be used in assessment picture, by brightness measurement unit and colour measurement
Unit simultaneously shoots panel, and the picture that shooting obtains is converted to the brightness of pixel scale by computing unit and coloration is believed
Breath；Then Mura assessments are carried out according to the brightness and chrominance information and sentences grade, assessment is up to standard, and it is non-defective unit to sentence grade, is sent to normal
The other processes of process flow；For assessing panel not up to standard, it is determined as exception if being more than setting value if its bad point, bad line
Product flow it into and do over again station or manually sentence station again；Step (2) is transferred to if bad point, bad line are in setting value again
Secondary progress color spot compensation deals.
Above-described embodiment provide OLED color spots detection with repair integral system, method, due to need not to R G B tri-
The different grayscale of a color individually shoots extraction brightness and compensates, and it is only necessary to handle white picture, therefore can
Greatly shorten test period, improves testing efficiency；And have in white picture progress, measurement due to measuring brightness
The current limit of white picture, thus offset data can eliminate the influence of current limit, make white picture relative to other
Compensation method brightness evenly, can compensate for colour cast Mura.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of detection of OLED color spots with repair integral system, which is characterized in that including computing unit, optical measurement unit and
Driving unit；
The driving unit acts on oled panel to drive oled panel to light the white picture of different grayscale；Optical measurement list
Member measures picture, Yi Jiqu for shooting pixel intensity of the oled panel under the white picture under the triggering of driving unit
The colour measurement picture of block rank；
Brightness and coloration of the computing unit for obtaining each pixel according to the brightness measurement picture, colour measurement picture are simultaneously
Color spot type and grade are determined according to the brightness of pixel and coloration；And for calculating R/ according to the brightness of each grayscale and colorimeter
The offset data in each channels G/B and the receivable format of driving chip for being converted to oled panel are sent to the memory of panel
In；
Oled panel to be repaired calls the offset data in memory to carry out color under the control of its demura enabled state register
Spot reparation.
2. OLED color spots detection as described in claim 1 and reparation integral system, which is characterized in that further include complementary
Environment position control unit, the environment position control unit include darkroom, cleaner, panel alignment mechanism, optical path adjusting
Mechanism；
The darkroom is for accommodating oled panel and the optical measurement unit, to eliminate influence of the ambient light to measurement；
The cleaner is located in the darkroom, for removing the dust in environment；
The panel alignment mechanism is used to adjust the position of oled panel to be measured, and oled panel center to be measured is made to be in the light of light path
On axis and oled panel plane is parallel to the camera plane of optical measurement unit；
The optical path adjusting mechanism is connected with optical measurement unit, the camera for adjusting optical measurement unit and the faces OLED to be measured
The position of the size of the distance between plate and camera aperture, focusing ring.
3. OLED color spots detection as claimed in claim 1 or 2 and reparation integral system, which is characterized in that the optics is surveyed
Amount unit shoots pixel intensity of the oled panel in the case where pre-processing picture under the triggering of driving unit and measures picture and coloration survey
Spirogram piece, and be to judge the oled panel according to pixel intensity measurement picture and colour measurement picture by computing unit
It is no to need to carry out color spot reparation.
4. OLED color spots detection as claimed in claim 1 or 2 and reparation integral system, which is characterized in that the optics is surveyed
Measure brightness measurement unit and colour measurement unit that unit includes arranged side by side；When work, the brightness measurement unit and colour measurement
Unit simultaneously shoots the image that oled panel is shown, the brightness that brightness measurement unit photographs obtain oled panel pixel is surveyed
Spirogram piece, colour measurement unit photographs obtain the colour measurement picture of measured panel block level.
5. detecting and repairing with the OLED color spots for repairing integral system based on the OLED color spots detection described in Claims 1 to 4
Method, which is characterized in that include the following steps：
(1) shot under the initial assessment picture that oled panel is shown brightness measurement picture and colour measurement picture and thus to obtain
Brightness and chroma data；Mura is carried out to measured panel according to the brightness and chroma data and initially sentences grade, filter out need into
The oled panel of row color spot reparation carries out the processing of step (2)；
(2) oled panel to be repaired is driven to light the white picture of different grayscale, oled panel to be repaired often lights a white
Picture simultaneously shoots the picture shown by oled panel to be repaired by brightness measurement unit and colour measurement unit, will
It shoots the brightness measurement picture obtained and colour measurement picture is respectively converted into brightness and the chroma data of each pixel；
(3) offset data is calculated according to the brightness of each grayscale and chroma data, and is converted to the drive of oled panel to be repaired
Format needed for dynamic chip, is sent in the memory of oled panel to be repaired；
(4) offset data in memory is called to carry out oled panel to be repaired under the control of demura enabled state registers
Color spot reparation.
6. OLED color spots detection as claimed in claim 5 and restorative procedure, which is characterized in that further include following steps：
(5) the assessment picture that shooting oled panel is shown after color spot reparation is enabled is obtained according to captured assessment picture calculating
JND values or Semu values are taken, the color spot evaluation grade after oled panel is repaired is obtained.
7. such as OLED color spots described in claim 5 or 6 detection and restorative procedure, which is characterized in that the step (1) includes such as
Lower sub-step：
(1.1) driving oled panel lights initial assessment picture, by brightness measurement unit and colour measurement unit simultaneously to OLED
Panel carries out shooting and obtains brightness measurement picture and colour measurement picture, by computing unit by brightness measurement picture and colour measurement
Picture is respectively converted into brightness and the chroma data of pixel scale；The initial assessment picture is 1 or multiple and different grayscale
White picture；
(1.2) Mura is carried out to the oled panel according to the brightness and chroma data and initially sentences grade, it is good for being determined as
The oled panel of product is then sent to the other processes of normal process flow；For the OLED for being judged to needing to carry out color spot reparation
Panel then enters step the processing of (1.3)；
(1.3) oled panel that bad point, bad line are more than setting value is determined as abnormal article, flows it into station or artificial of doing over again
Station is sentenced again；The oled panel of bad point, bad line in setting value is transferred to step (2) to handle.
8. such as OLED color spots described in claim 5 or 6 detection and restorative procedure, which is characterized in that in step (3), white is drawn
The quantity in face and the grayscale of picture are preset according to the requirement of the Demura circuit function modules of oled panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810349109.4A CN108682365B (en) | 2018-04-18 | 2018-04-18 | OLED color spot detection and repair integrated system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810349109.4A CN108682365B (en) | 2018-04-18 | 2018-04-18 | OLED color spot detection and repair integrated system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108682365A true CN108682365A (en) | 2018-10-19 |
| CN108682365B CN108682365B (en) | 2022-02-18 |
Family
ID=63801131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810349109.4A Active CN108682365B (en) | 2018-04-18 | 2018-04-18 | OLED color spot detection and repair integrated system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108682365B (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109389922A (en) * | 2018-12-17 | 2019-02-26 | 张家港康得新光电材料有限公司 | The detection device of display panel can be switched in a kind of 2D-3D |
| CN109493767A (en) * | 2018-10-30 | 2019-03-19 | 合肥市商巨智能装备有限公司 | Mura defects compensate device and method |
| CN109727567A (en) * | 2019-01-10 | 2019-05-07 | 辽宁科技大学 | A kind of display colour developing accuracy assessment method |
| CN110120195A (en) * | 2019-05-31 | 2019-08-13 | 昆山国显光电有限公司 | Compensation data method and intelligent terminal |
| CN110246449A (en) * | 2019-06-18 | 2019-09-17 | 京东方科技集团股份有限公司 | The adjusting method and device of display panel |
| CN110534045A (en) * | 2019-08-20 | 2019-12-03 | 武汉精立电子技术有限公司 | A kind of efficient Demura process flow operation method and system |
| CN110660352A (en) * | 2019-11-05 | 2020-01-07 | 深圳市奥拓电子股份有限公司 | Point-to-point correction method, device and system for LED display screen and storage medium |
| CN110706648A (en) * | 2019-09-23 | 2020-01-17 | 昆山国显光电有限公司 | Image display adjustment method and system and display panel |
| CN110991082A (en) * | 2019-12-19 | 2020-04-10 | 信利(仁寿)高端显示科技有限公司 | Mura quantification method based on excimer laser annealing |
| CN111028773A (en) * | 2019-12-06 | 2020-04-17 | 武汉华星光电半导体显示技术有限公司 | Method and device for acquiring compensation coefficient of brightness unevenness compensation technology |
| CN111124344A (en) * | 2018-11-01 | 2020-05-08 | 合肥欣奕华智能机器有限公司 | Screen particle brightness extraction method and device |
| CN111161663A (en) * | 2020-01-06 | 2020-05-15 | 昆山国显光电有限公司 | Driving method and testing method of display panel and display panel |
| CN111325715A (en) * | 2020-01-21 | 2020-06-23 | 上海悦易网络信息技术有限公司 | Camera color spot detection method and device |
| CN111462693A (en) * | 2020-04-17 | 2020-07-28 | 苏州佳智彩光电科技有限公司 | Method and system for performing external optical compensation on AMO L ED curved screen |
| CN111508397A (en) * | 2020-04-23 | 2020-08-07 | 云谷（固安）科技有限公司 | Display panel detection method and display panel detection device |
| CN112331140A (en) * | 2020-11-02 | 2021-02-05 | 苏州佳智彩光电科技有限公司 | Display screen color cast Mura repairing method and device |
| CN112397002A (en) * | 2020-11-19 | 2021-02-23 | Oppo广东移动通信有限公司 | Display panel detection method, electronic device detection device, and storage medium |
| CN112561913A (en) * | 2021-02-23 | 2021-03-26 | 武汉精创电子技术有限公司 | Method and device for generating mura defect sample data of display panel |
| CN113035099A (en) * | 2021-03-18 | 2021-06-25 | 深圳市联测光电科技有限公司 | Color spot repairing method of liquid crystal panel, system test framework and DE-MURA equipment used in method |
| CN114693656A (en) * | 2022-04-06 | 2022-07-01 | 厦门大学 | Method for detecting display defects of LED display screen and method for calibrating camera and optical filter |
| WO2022141881A1 (en) * | 2020-12-28 | 2022-07-07 | 武汉精测电子集团股份有限公司 | Chromaticity measurement method and device for calibration of tiled led display screen |
| CN114898706A (en) * | 2022-05-18 | 2022-08-12 | 昆山国显光电有限公司 | Brightness compensation method and device of display screen and computer equipment |
| TWI805507B (en) * | 2022-10-11 | 2023-06-11 | 錼創顯示科技股份有限公司 | Defect detection and removal apparatus and method |
| CN117392930A (en) * | 2023-12-08 | 2024-01-12 | 昇显微电子(苏州)股份有限公司 | Method and system for performing efficient Demura processing based on CIEXYZ data |
| CN117392937A (en) * | 2023-12-13 | 2024-01-12 | 武汉精测电子集团股份有限公司 | Color point separation and demura method, device and system for white picture of display panel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943080A (en) * | 2014-03-06 | 2014-07-23 | 京东方科技集团股份有限公司 | Display device pixel brightness compensation control method and device |
| CN104882098A (en) * | 2015-06-08 | 2015-09-02 | 广东威创视讯科技股份有限公司 | Image correction method based on LED splicing display screen and image sensor |
| CN105047128A (en) * | 2014-04-28 | 2015-11-11 | 三星显示有限公司 | Isplay device and method for driving the same |
| CN105244004A (en) * | 2015-11-23 | 2016-01-13 | 深圳市华星光电技术有限公司 | Control board and liquid crystal display with control board |
| US20160189635A1 (en) * | 2014-12-29 | 2016-06-30 | Lg Display Co., Ltd. | Organic light emitting diode display and method for controlling luminance thereof |
| CN106251830A (en) * | 2016-08-09 | 2016-12-21 | 昆山国显光电有限公司 | The restorative procedure of the bad display of display and device thereof |
| CN107767807A (en) * | 2017-08-23 | 2018-03-06 | 武汉精测电子集团股份有限公司 | A kind of color spot restorative procedure and system suitable for CELL processes |
-
2018
- 2018-04-18 CN CN201810349109.4A patent/CN108682365B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943080A (en) * | 2014-03-06 | 2014-07-23 | 京东方科技集团股份有限公司 | Display device pixel brightness compensation control method and device |
| CN105047128A (en) * | 2014-04-28 | 2015-11-11 | 三星显示有限公司 | Isplay device and method for driving the same |
| US20160189635A1 (en) * | 2014-12-29 | 2016-06-30 | Lg Display Co., Ltd. | Organic light emitting diode display and method for controlling luminance thereof |
| CN104882098A (en) * | 2015-06-08 | 2015-09-02 | 广东威创视讯科技股份有限公司 | Image correction method based on LED splicing display screen and image sensor |
| CN105244004A (en) * | 2015-11-23 | 2016-01-13 | 深圳市华星光电技术有限公司 | Control board and liquid crystal display with control board |
| CN106251830A (en) * | 2016-08-09 | 2016-12-21 | 昆山国显光电有限公司 | The restorative procedure of the bad display of display and device thereof |
| CN107767807A (en) * | 2017-08-23 | 2018-03-06 | 武汉精测电子集团股份有限公司 | A kind of color spot restorative procedure and system suitable for CELL processes |
Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109493767A (en) * | 2018-10-30 | 2019-03-19 | 合肥市商巨智能装备有限公司 | Mura defects compensate device and method |
| CN111124344B (en) * | 2018-11-01 | 2024-03-12 | 合肥欣奕华智能机器股份有限公司 | Screen particle brightness extraction method and device |
| CN111124344A (en) * | 2018-11-01 | 2020-05-08 | 合肥欣奕华智能机器有限公司 | Screen particle brightness extraction method and device |
| CN109389922A (en) * | 2018-12-17 | 2019-02-26 | 张家港康得新光电材料有限公司 | The detection device of display panel can be switched in a kind of 2D-3D |
| CN109727567B (en) * | 2019-01-10 | 2021-12-10 | 辽宁科技大学 | Method for evaluating color development precision of display |
| CN109727567A (en) * | 2019-01-10 | 2019-05-07 | 辽宁科技大学 | A kind of display colour developing accuracy assessment method |
| CN110120195A (en) * | 2019-05-31 | 2019-08-13 | 昆山国显光电有限公司 | Compensation data method and intelligent terminal |
| CN110246449A (en) * | 2019-06-18 | 2019-09-17 | 京东方科技集团股份有限公司 | The adjusting method and device of display panel |
| CN110534045A (en) * | 2019-08-20 | 2019-12-03 | 武汉精立电子技术有限公司 | A kind of efficient Demura process flow operation method and system |
| CN110534045B (en) * | 2019-08-20 | 2022-11-29 | 武汉精立电子技术有限公司 | Efficient Demura process operation method and system |
| CN110706648A (en) * | 2019-09-23 | 2020-01-17 | 昆山国显光电有限公司 | Image display adjustment method and system and display panel |
| CN110660352A (en) * | 2019-11-05 | 2020-01-07 | 深圳市奥拓电子股份有限公司 | Point-to-point correction method, device and system for LED display screen and storage medium |
| CN111028773A (en) * | 2019-12-06 | 2020-04-17 | 武汉华星光电半导体显示技术有限公司 | Method and device for acquiring compensation coefficient of brightness unevenness compensation technology |
| CN111028773B (en) * | 2019-12-06 | 2021-07-23 | 武汉华星光电半导体显示技术有限公司 | Method and device for acquiring compensation coefficient of brightness unevenness compensation technology |
| CN110991082A (en) * | 2019-12-19 | 2020-04-10 | 信利(仁寿)高端显示科技有限公司 | Mura quantification method based on excimer laser annealing |
| CN110991082B (en) * | 2019-12-19 | 2023-11-28 | 信利(仁寿)高端显示科技有限公司 | Mura quantification method based on excimer laser annealing |
| CN111161663A (en) * | 2020-01-06 | 2020-05-15 | 昆山国显光电有限公司 | Driving method and testing method of display panel and display panel |
| CN111325715A (en) * | 2020-01-21 | 2020-06-23 | 上海悦易网络信息技术有限公司 | Camera color spot detection method and device |
| CN111462693A (en) * | 2020-04-17 | 2020-07-28 | 苏州佳智彩光电科技有限公司 | Method and system for performing external optical compensation on AMO L ED curved screen |
| CN111508397B (en) * | 2020-04-23 | 2023-03-24 | 云谷（固安）科技有限公司 | Display panel detection method and display panel detection device |
| CN111508397A (en) * | 2020-04-23 | 2020-08-07 | 云谷（固安）科技有限公司 | Display panel detection method and display panel detection device |
| CN112331140B (en) * | 2020-11-02 | 2021-11-16 | 苏州佳智彩光电科技有限公司 | Display screen color cast Mura repairing method and device |
| CN112331140A (en) * | 2020-11-02 | 2021-02-05 | 苏州佳智彩光电科技有限公司 | Display screen color cast Mura repairing method and device |
| CN112397002B (en) * | 2020-11-19 | 2024-01-12 | Oppo广东移动通信有限公司 | Display panel detection method, electronic device detection device and storage medium |
| CN112397002A (en) * | 2020-11-19 | 2021-02-23 | Oppo广东移动通信有限公司 | Display panel detection method, electronic device detection device, and storage medium |
| WO2022141881A1 (en) * | 2020-12-28 | 2022-07-07 | 武汉精测电子集团股份有限公司 | Chromaticity measurement method and device for calibration of tiled led display screen |
| CN112561913B (en) * | 2021-02-23 | 2021-04-30 | 武汉精创电子技术有限公司 | Method and device for generating mura defect sample data of display panel |
| CN112561913A (en) * | 2021-02-23 | 2021-03-26 | 武汉精创电子技术有限公司 | Method and device for generating mura defect sample data of display panel |
| CN113035099A (en) * | 2021-03-18 | 2021-06-25 | 深圳市联测光电科技有限公司 | Color spot repairing method of liquid crystal panel, system test framework and DE-MURA equipment used in method |
| CN114693656A (en) * | 2022-04-06 | 2022-07-01 | 厦门大学 | Method for detecting display defects of LED display screen and method for calibrating camera and optical filter |
| CN114898706A (en) * | 2022-05-18 | 2022-08-12 | 昆山国显光电有限公司 | Brightness compensation method and device of display screen and computer equipment |
| CN114898706B (en) * | 2022-05-18 | 2023-10-31 | 昆山国显光电有限公司 | Display screen brightness compensation method and device and computer equipment |
| TWI805507B (en) * | 2022-10-11 | 2023-06-11 | 錼創顯示科技股份有限公司 | Defect detection and removal apparatus and method |
| CN117392930B (en) * | 2023-12-08 | 2024-02-27 | 昇显微电子(苏州)股份有限公司 | Method and system for performing efficient Demura processing based on CIEXYZ data |
| CN117392930A (en) * | 2023-12-08 | 2024-01-12 | 昇显微电子(苏州)股份有限公司 | Method and system for performing efficient Demura processing based on CIEXYZ data |
| CN117392937A (en) * | 2023-12-13 | 2024-01-12 | 武汉精测电子集团股份有限公司 | Color point separation and demura method, device and system for white picture of display panel |
| CN117392937B (en) * | 2023-12-13 | 2024-03-19 | 武汉精测电子集团股份有限公司 | Color point separation and demura method, device and system for white picture of display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108682365B (en) | 2022-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108682365A (en) | A kind of detection of OLED color spots with repair integral system, method | |
| CN106373523B (en) | Spliced bright and dark line compensation method | |
| KR100189178B1 (en) | Lcd panel test apparatus having means for correcting data difference among test apparatus | |
| US7474329B2 (en) | Apparatus and method to evaluate an illuminated panel | |
| EP3514785A1 (en) | Screen calibration method and screen calibration system capable of correcting full screen color tones automatically | |
| JP2011196685A (en) | Defect detection device, defect repairing device, display panel, display device, defect detection method and program | |
| CN104966493A (en) | Method for compensating spliced bright and dark lines | |
| KR20160061541A (en) | Vision inspection apparatus and method of compensating gamma and mura defect thereof | |
| CN108594484A (en) | Panel detection and reparation integral system | |
| CN109637441B (en) | Module Gamma correction method based on Kalman filtering | |
| CN110322830B (en) | LED screen brightness correction method and device | |
| CN110428762B (en) | OLED panel aging test luminescence characteristic detection method based on pixel brightness | |
| CN112885289B (en) | Display screen calibration method and device | |
| CN109872309A (en) | Detection system, method, apparatus and computer readable storage medium | |
| KR100397080B1 (en) | Flat Display Inspection System | |
| CN110942748A (en) | Panel voltage drop compensation method and device based on area array camera | |
| WO2014132506A1 (en) | Method for detecting display panel defects and device for detecting display panel defects | |
| CN108957799A (en) | A kind of detection method of LCD display module backlight uniformity of chromaticity | |
| KR102142654B1 (en) | Picture quality testing apparatus and method of display device | |
| KR20060052414A (en) | Method and apparatus for detecting flat panel display by vision model | |
| JPH07507139A (en) | flat panel display inspection system | |
| CN111613157A (en) | Mura repair test method of display panel, display panel and display device | |
| CN105679263B (en) | Method and system for splicing display device display color | |
| KR100849940B1 (en) | Method and Apparatus for Inspection of Image Quality of Color Display Panels | |
| CN115049747B (en) | Chromaticity measurement method and system of high dynamic range screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |