CN107507562B - OLED grayscale gamma method of adjustment based on fast search algorithm - Google Patents
OLED grayscale gamma method of adjustment based on fast search algorithm Download PDFInfo
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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
- G09G3/22—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]
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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Abstract
The OLED grayscale gamma method of adjustment based on fast search algorithm that the present invention provides a kind of, including carry out gamma for R, G, B and individually adjust and to grayscale image progress gamma adjusting.The beneficial effects of the present invention are: quickly adjusting gamma register based on plain algorithm is quickly searched, chromaticity coordinate is carried out to grey chromatic graph after 3 color adjustments and is finely adjusted, is guaranteeing quickly to adjust while guaranteeing that gray scale is shown to meet chromaticity coordinate condition.
Description
Technical field
The present invention relates to OLED grayscale gamma method of adjustment more particularly to a kind of OLED ashes based on fast search algorithm
Rank gamma method of adjustment.
Background technique
Gamma is derived from the response curve of the CRT monitor of early stage, that is, the nonlinear dependence of output brightness and input voltage
System, as shown in Figure 1.
OLED screen have ultra-thin, self-luminous, visual angle is wide, response is fast, luminous efficiency is high, thermal adaptability is good, driving voltage
Low, the features such as low energy consumption, the use of OLED have been a kind of development trends, and it can be family that OLED, which has very wide application prospect,
The end product manufacturers such as electricity, communication, computer, instrument and meter provide new display methods, also bring for consumer more cheap
Portable, browsing, read and ornamental, and OLED needs multiple processes in process of production, and wherein grayscale gamma adjustment just belongs to
In a procedure therein.OLED grayscale gamma adjustment is adjusted mainly for the brightness value of OLED gray display picture, is made
It shows that picture more adapts to human eye and responds to the variation of brightness, reaches preferable display effect.
So-called gamma adjustment is exactly to be adjusted to the gamma curve of display image, is shown with the image to display screen
Non-linear tone adjustment is carried out, increases dark parts and light-colored part ratio in picture signal, to improve image comparison
Spend effect.
Gamma adjustment changes input voltage value by adjusting gamma correction register in screen, to change
The output for becoming screen, reaches preferable display effect.
The shortcomings that prior art, is: regulating the speed slow, is unable to satisfy quick adjustment demand.In adjustment gamma register value
Reasonable adjusting range can not be determined in the process, and can not the reasonable register value of fast search；To 3 color register gamma
Chromaticity coordinate can not be corrected after adjustment or chromaticity coordinate is regulated the speed relatively slowly, and ideal effect is not achieved.
Summary of the invention
In order to solve the problems in the prior art, the OLED grayscale based on fast search algorithm that the present invention provides a kind of
Gamma method of adjustment.
The OLED grayscale gamma method of adjustment based on fast search algorithm that the present invention provides a kind of, including it is directed to R, G, B
Gamma is carried out to individually adjust and carry out gamma adjusting to grayscale image.
As a further improvement of the present invention, comprising the following steps:
S1, gamma curve function are as follows: Lv=K* (l/256) ^r, wherein l is grayscale value, and K is that the target of 255 ranks is maximum
Brightness, r are gamma value, and Lv is the brightness value of grayscale l, according to gamma curve function input parameters K, r and adjust grey order cluster
{L}；
S2, from adjusting, grey order cluster { L } is middle to take out grayscale value l；
S3, according to input parameter K, r, r deviation range and Red luminance component ratio calculation Red correspond to color range l brightness value model
It encloses；
S4, Red gamma register is adjusted, reaches regulation brightness range；
S5, color range l is corresponded to according to Formula Input Technology parameter K, r, r deviation range and Green luminance component ratio calculation Green
Range of luminance values；
S6, Green gamma register is adjusted, reaches regulation brightness range；
S7, to correspond to color range l according to Formula Input Technology parameter K, r, r deviation range and Blue luminance component ratio calculation Blue bright
Angle value range；
S8, Blue gamma register is adjusted, reaches regulation brightness range；
S9,1 brightness range of grayscale, brightness range and x, y-component and deviation range are calculated；
S10, adjustment grayscale 1gamma；
S11, judge whether the grey order cluster { L } of adjustment is empty, then terminates to debug if it is sky, if not being to dally to step S1.
As a further improvement of the present invention, for R, G, B carry out gamma individually adjust the following steps are included:
1. calculating corresponding color range bright values and degree of deviation range according to input parameter；
2. being switched to corresponding monochromatic color range figure to show；
3. measuring brightness value；
4. judge brightness value whether within the scope of luminance deviation, in brightness value and deviation range, as a result monochromatic rank gamma tune
Section；Otherwise, it adjusts gamma register value and is written, go to step 3.
As a further improvement of the present invention, to grayscale image carry out gamma adjusting the following steps are included:
1, l rank grayscale image brightness value and deviation range, x, y-component and deviation range are calculated according to input parameter；
2, switch corresponding 1 figure of grayscale to be shown；
3, brightness value and x, y-component are measured；
4, whether brightness value is providing brightness range, if it is less than regulation brightness range, then goes to step 5；If it is greater than
It provides brightness range, then goes to step 6；If going to step 7 in prescribed limit brightness；
5, current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then increase B points
Amount；If x, y are smaller than target value, then increase R, G component；If x is less than normal, increase R component；If y is less than normal, increase G
Component；If x is bigger than normal, increase G component；If y is bigger than normal, increase R component；If x, y-component is in deviation range, then together
Shi Zengjia R, G, B component；Step 3 is gone to after adjusting gamma register；
6, current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then R, G are reduced
Component；If x, y are smaller than target value, then B component is reduced；If x is less than normal, G component is reduced；If y is less than normal, increase R
Component；If x is bigger than normal, R component is reduced；If y is bigger than normal, G component is reduced；If x, y-component is in deviation range, then together
When reduce R, G, B component；Step 3 is gone to after adjusting gamma register；
7, current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then R, G are reduced
Component；If x, y are smaller than target value, then B component is reduced；If x is less than normal, G component is reduced；If y is less than normal, increase R
Component；If x is bigger than normal, R component is reduced；If y is bigger than normal, G component is reduced；Step 3 is gone to after adjusting；If x, y-component
In deviation range, then grayscale image adjusting is exited.
As a further improvement of the present invention, grayscale image gamma is adjusted:
1, it lights OLED and obtains current 3 color gamma register value of color range；
2, OLED screen brightness value and chromaticity coordinate are measured；
3, according to brightness value, determination is three color gamma register values of increase or reduces three color gamma register values, and
It is declined the whole three colors gamma register value of tune according to priori item；
4,2-3 step is repeated, until grayscale image brightness value and chromaticity coordinate are all satisfied condition.
As a further improvement of the present invention, OLED screen is lighted by pattern generagor, passes through coloration point
Analyzer carries out external lightness information acquisition to OLED screen and is sent to computer, is divided by computer external lightness information
Analysis and calculating obtain gamma register value, and OLED screen are written in the gamma register value.
As a further improvement of the present invention, OLED register count is configured to pattern generagor by computer
According to.
As a further improvement of the present invention, after adjusting gamma, judge to adjust whether result meets by computer
Parameter specification executes OTP/MTP burning if met.
The beneficial effects of the present invention are: gamma register is quickly adjusted based on plain algorithm is quickly searched, after 3 color adjustments
Chromaticity coordinate is carried out to grey chromatic graph to be finely adjusted, and is guaranteeing quickly to adjust while guaranteeing that gray scale is shown to meet chromaticity coordinate condition.
Detailed description of the invention
Fig. 1 is the response curve of CRT monitor in the prior art.
Fig. 2 is a kind of adjustment flow chart of the OLED grayscale gamma method of adjustment based on fast search algorithm of the present invention.
Fig. 3 is that a kind of monochromatic gamma of the OLED grayscale gamma method of adjustment based on fast search algorithm of the present invention is adjusted
Flow chart.
Fig. 4 is a kind of grayscale image gamma tune of the OLED grayscale gamma method of adjustment based on fast search algorithm of the present invention
Save flow chart.
Fig. 5 is the output brightness of the OLED grayscale gamma method of adjustment based on fast search algorithm of the present invention a kind of and defeated
Enter voltage curve.
Specific embodiment
The invention will be further described for explanation and specific embodiment with reference to the accompanying drawing.
A kind of OLED grayscale gamma method of adjustment based on fast search algorithm, using PG (Pattern Generator,
Pattern generagor) OLED screen is lighted, OLED screen adopted using external lightness information by colorimetric analysis instrument
Collection, is analyzed by the data of acquisition, and carries out gamma adjustment by PG, and PC is mainly used for configuring OLED deposit by PG
Device data, the carry out analytical calculation acquired by FPD color analysis instrument obtain gamma register value appropriate, and by register
Value write-in OLED after adjusting gamma, judges to adjust whether result meets parameter specification, if met, executes OTP/MTP and burn
Record.
A kind of OLED grayscale gamma method of adjustment based on fast search algorithm, adjustment process are divided into two parts, and first
Minute hand carries out gamma to R, G, B and individually adjusts, and second part carries out gamma adjusting to grayscale image.
Gamma curve function: (l is grayscale value to Lv=K* (l/256) ^r, and K is the target maximum brightness of 255 ranks, and r is
Gamma value, Lv are the brightness value of grayscale l)
As shown in Fig. 2, PC is as follows to the adjustment process of gamma:
1. inputting parameter according to Formula Input Technology parameter K, r and adjusting grey order cluster { L }；
2. from a grayscale l is taken out in { L }
3. corresponding to color range l brightness according to Formula Input Technology parameter K, r, r deviation range and Red luminance component ratio calculation Red
It is worth range；
4.* adjusts Red gamma register, reaches regulation brightness range；
5. corresponding to color range l according to Formula Input Technology parameter K, r, r deviation range and Green luminance component ratio calculation Green
Range of luminance values；
6.* adjusts Green gamma register, reaches regulation brightness range；
7. it is bright to correspond to color range l according to Formula Input Technology parameter K, r, r deviation range and Blue luminance component ratio calculation Blue
Angle value range；
8.* adjusts Blue gamma register, reaches regulation brightness range；
9. calculating 1 brightness range of grayscale, brightness range and x, y-component and deviation range；
10.* adjusts grayscale 1gamma；
11. whether { L } be empty, then terminate to debug for sky, is not idle running to step 1.
Wherein the 4th, 6,8 step is monochrome gamma adjusting, and step 10 is grayscale image gamma adjusting.
Mainly monochromatic gamma register value is adjusted to zone of reasonableness, to reduce ash as shown in figure 3, single color gradation is adjusted
It spends and schemes gamma regulating time, under regulation flow process:
1. calculating corresponding color range bright values and degree of deviation range according to input parameter；
2. being switched to corresponding monochromatic color range figure to show；
3. measuring brightness value；
4. judge brightness value whether within the scope of luminance deviation, in brightness value and deviation range, as a result monochromatic rank gamma tune
Section；Otherwise, it adjusts gamma register value and is written, go to step 3.
As shown in figure 4, grayscale image gamma is adjusted by adjusting R, G, B gamma register, so that grayscale image meets simultaneously
Chromaticity coordinate and gamma brightness curve.Regulation flow process is as follows:
1, l rank grayscale image brightness value and deviation range, x, y-component and deviation range are calculated according to input parameter；
2, switch corresponding 1 figure of grayscale to be shown；
3, brightness value and x, y-component are measured；
4, whether brightness value is providing brightness range, if it is less than regulation brightness range, then goes to step 5；If it is greater than
It provides brightness range, then goes to step 6；If going to step 7 in prescribed limit brightness；
5, current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then increase B points
Amount；If x, y are smaller than target value, then increase R, G component；If x is less than normal, increase R component；If y is less than normal, increase G
Component；If x is bigger than normal, increase G component；If y is bigger than normal, increase R component；If x, y-component is in deviation range, then together
Shi Zengjia R, G, B component；Step 3 is gone to after adjusting gamma register；
6, current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then R, G are reduced
Component；If x, y are smaller than target value, then B component is reduced；If x is less than normal, G component is reduced；If y is less than normal, increase R
Component；If x is bigger than normal, R component is reduced；If y is bigger than normal, G component is reduced；If x, y-component is in deviation range, then together
When reduce R, G, B component；Step 3 is gone to after adjusting gamma register；
7, current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then R, G are reduced
Component；If x, y are smaller than target value, then B component is reduced；If x is less than normal, G component is reduced；If y is less than normal, increase R
Component；If x is bigger than normal, R component is reduced；If y is bigger than normal, G component is reduced；Step 3 is gone to after adjusting；If x, y-component
In deviation range, then grayscale image adjusting is exited；
The description of Gamma adjustment algorithm:
Monochromatic gamma adjustment:
1. lighting OLED and obtaining current color range gamma register initial value (C point)；
2. measuring OLED screen brightness value；
3. determining gamma register adjusting range (x1-x2) by relationship as shown in Figure 3；
4. D point gamma register value is calculated using golden section side；
5. OLED gamma register is written in D point gamma register value；
6. 2-4 step is repeated, until the brightness value of measurement meets Rule of judgment.
Grayscale image gamma adjustment:
1. lighting OLED and obtaining current 3 color gamma register value of color range；
2. measuring OLED screen brightness value and chromaticity coordinate；
3. according to brightness value, determination is three color gamma register values of increase or reduces three color gamma register values, and
It is declined the whole three colors gamma register value of tune according to priori item；
4. 2-3 step is repeated, until grayscale image brightness value and chromaticity coordinate are all satisfied condition.
A kind of OLED grayscale gamma method of adjustment based on fast search algorithm provided by the invention searches element based on quick
Algorithm quickly adjusts gamma register, carries out chromaticity coordinate to grey chromatic graph after 3 color adjustments and is finely adjusted, and is guaranteeing quickly
It adjusts while guaranteeing that gray scale is shown and meet chromaticity coordinate condition, can quickly adjust monochromatic gamma register, rapid fine adjustment gray scale
Scheme gamma response；Golden section fast search algorithm is increased in the prior art, while being inputted by priori conditions and signal
Determine that search range reaches faster search effect with exporting；2. during adjustment, ensure that gamma response meets
While OLED specification, also ensure that chromaticity coordinate meets OLED specification.
A kind of OLED grayscale gamma method of adjustment based on fast search algorithm provided by the invention has the advantage that
A. OLED grayscale gamma is improved to regulate the speed.
B. the exact extension of OLED grayscale gamma adjustment is improved.
C. the exact extension of OLED grayscale chromaticity coordinate is improved.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, In
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (7)
1. a kind of OLED grayscale gamma method of adjustment based on fast search algorithm, which is characterized in that including for R, G, B into
Row gamma is individually adjusted and is carried out gamma adjusting to grayscale image；
Wherein,
The OLED grayscale gamma method of adjustment based on fast search algorithm the following steps are included:
S1, gamma curve function are as follows: Lv=K* (l/256) ^r, wherein l is grayscale value, and K is the target maximum brightness of 255 ranks,
R is gamma value, and Lv is the brightness value of grayscale l, according to gamma curve function input parameters K, r and adjusts grey order cluster { L }；
S2, from adjusting, grey order cluster { L } is middle to take out grayscale value l；
S3, according to input parameter K, r, r deviation range and Red luminance component ratio calculation Red correspond to color range l range of luminance values；
S4, Red gamma register is adjusted, reaches regulation brightness range；
S5, color range l brightness is corresponded to according to Formula Input Technology parameter K, r, r deviation range and Green luminance component ratio calculation Green
It is worth range；
S6, Green gamma register is adjusted, reaches regulation brightness range；
S7, color range l brightness value is corresponded to according to Formula Input Technology parameter K, r, r deviation range and Blue luminance component ratio calculation Blue
Range；
S8, Blue gamma register is adjusted, reaches regulation brightness range；
S9,1 brightness range of grayscale, brightness range and x, y-component and deviation range are calculated；
S10, adjustment grayscale 1gamma；
S11, judge whether the grey order cluster { L } of adjustment is empty, then terminates to debug if it is sky, if not being to dally to step S1.
2. the OLED grayscale gamma method of adjustment according to claim 1 based on fast search algorithm, which is characterized in that
For R, G, B carry out gamma individually adjust the following steps are included:
1. calculating corresponding color range bright values and degree of deviation range according to input parameter；
2. being switched to corresponding monochromatic color range figure to show；
3. measuring brightness value；
4. judging brightness value whether within the scope of luminance deviation, in brightness value and deviation range, as a result monochrome rank gamma is adjusted；
Otherwise, it adjusts gamma register value and is written, go to step 3.
3. the OLED grayscale gamma method of adjustment according to claim 1 based on fast search algorithm, which is characterized in that
To grayscale image carry out gamma adjusting the following steps are included:
1) l rank grayscale image brightness value and deviation range, x, y-component and deviation range, are calculated according to input parameter；
2), switch corresponding 1 figure of grayscale to be shown；
3) brightness value and x, y-component, are measured；
4), whether brightness value is providing brightness range, if it is less than regulation brightness range, then goes to step 5；If it is greater than regulation
Brightness range then goes to step 6；If going to step 7 in prescribed limit brightness；
5), current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then increase B component；
If x, y are smaller than target value, then increase R, G component；If x is less than normal, increase R component；If y is less than normal, increase G points
Amount；If x is bigger than normal, increase G component；If y is bigger than normal, increase R component；If x, y-component is in deviation range, then simultaneously
Increase R, G, B component；Step 3 is gone to after adjusting gamma register；
6), current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then R is reduced, G divides
Amount；If x, y are smaller than target value, then B component is reduced；If x is less than normal, G component is reduced；If y is less than normal, increase R points
Amount；If x is bigger than normal, R component is reduced；If y is bigger than normal, G component is reduced；If x, y-component is in deviation range, then simultaneously
Reduce R, G, B component；Step 3 is gone to after adjusting gamma register；
7), current chroma coordinate is compared with target chrominance coordinates；If x, y are bigger than target value, then R is reduced, G divides
Amount；If x, y are smaller than target value, then B component is reduced；If x is less than normal, G component is reduced；If y is less than normal, increase R points
Amount；If x is bigger than normal, R component is reduced；If y is bigger than normal, G component is reduced；Step 3 is gone to after adjusting；If x, y-component exists
In deviation range, then grayscale image adjusting is exited.
4. the OLED grayscale gamma method of adjustment according to claim 1 based on fast search algorithm, it is characterised in that:
Grayscale image gamma adjustment the following steps are included:
1, it lights OLED and obtains current 3 color gamma register value of color range；
2, OLED screen brightness value and chromaticity coordinate are measured；
3, according to brightness value, determination is three color gamma register values of increase or reduces three color gamma register values, and according to
Priori item declines the whole three colors gamma register value of tune；
4,2-3 step is repeated, until grayscale image brightness value and chromaticity coordinate are all satisfied condition.
5. the OLED grayscale gamma method of adjustment according to claim 1 based on fast search algorithm, it is characterised in that:
OLED screen is lighted by pattern generagor, external lightness information acquisition is carried out to OLED screen by colorimetric analysis instrument
And it is sent to computer, external lightness information is analyzed and calculated by computer, obtains gamma register value, and will
OLED screen is written in the gamma register value.
6. the OLED grayscale gamma method of adjustment according to claim 5 based on fast search algorithm, it is characterised in that:
OLED register data is configured to pattern generagor by computer.
7. the OLED grayscale gamma method of adjustment according to claim 5 based on fast search algorithm, it is characterised in that:
After adjusting gamma, judge to adjust whether result meets parameter specification by computer, if met, executes OTP/MTP burning
Record.
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| CN108665848A (en) * | 2018-05-02 | 2018-10-16 | 武汉精测电子集团股份有限公司 | OLED CELL panel Gamma Self-regulation track method and systems |
| CN108766376A (en) * | 2018-05-18 | 2018-11-06 | 武汉精测电子集团股份有限公司 | AF-ACC-AG adjusting process and system based on TTL modules |
| CN109036267B (en) * | 2018-07-09 | 2020-05-12 | 武汉华星光电半导体显示技术有限公司 | OLED module compensation method and OLED module compensation system |
| CN109584792B (en) * | 2018-11-05 | 2020-07-28 | 苏州佳智彩光电科技有限公司 | Method for quickly adjusting gray scale gamma of O L ED screen |
| CN110428765B (en) * | 2019-08-15 | 2020-10-16 | 武汉云摇初晓科技有限公司 | Gamma correction method of LED rotary display equipment |
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| KR20050003233A (en) * | 2003-06-30 | 2005-01-10 | 엘지.필립스 엘시디 주식회사 | generating apparatus of gamma voltage of LCD and method thereof |
| CN1987992A (en) * | 2005-12-21 | 2007-06-27 | 比亚迪股份有限公司 | Color regulating method and system of display terminal |
| CN101046939A (en) * | 2006-03-30 | 2007-10-03 | 东杰电气(上海)有限公司 | Configuration method of liquid crystal screen parameter |
| CN102881264A (en) * | 2011-07-15 | 2013-01-16 | 上海天马微电子有限公司 | Gamma adjustment method and device |
| CN105259687A (en) * | 2015-10-20 | 2016-01-20 | 深圳创维－Rgb电子有限公司 | Liquid crystal display screen picture consistency adjusting method and system |
| CN105741775A (en) * | 2016-05-05 | 2016-07-06 | 京东方科技集团股份有限公司 | Method and device for adjusting Gamma curve |
| CN106328070A (en) * | 2016-09-28 | 2017-01-11 | 武汉精测电子技术股份有限公司 | OLED module Gamma adjustment and calibration method and device |
| CN106713886A (en) * | 2016-12-20 | 2017-05-24 | 深圳Tcl数字技术有限公司 | White balance adjustment device and white balance adjustment method |
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