CN108364606B - Gamma adjusting method for OLED module - Google Patents
Gamma adjusting method for OLED module Download PDFInfo
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- CN108364606B CN108364606B CN201810139941.1A CN201810139941A CN108364606B CN 108364606 B CN108364606 B CN 108364606B CN 201810139941 A CN201810139941 A CN 201810139941A CN 108364606 B CN108364606 B CN 108364606B
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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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
Abstract
The invention relates to an OLED module gamma adjusting method, firstly writing first RGB register initial values of all binding points into a gamma register; then gamma adjustment is carried out on the high binding points or the low binding points to obtain RGB register values of the high binding points or the low binding points; multiplying the RGB regulation ratio of the high binding point or the low binding point by the first RGB register initial value of the adjacent binding point to obtain a second RGB register initial value of the adjacent binding point; and finally, gamma adjustment is carried out on the adjacent binding points to obtain RGB register values of the adjacent binding points. The invention can ensure the smooth transition of the picture, no screen flicker occurs, the effect after gamma adjustment meets the 2.2 standard in the industry, the gray scale gradual change effect after adjustment does not have bright lines, and the effect meets the requirements of customers.
Description
Technical Field
The invention relates to the field of production debugging of OLED modules, mainly aims at white balance gamma Tuning debugging of the OLED modules, and particularly relates to an OLED module gamma adjusting method.
Background
The OLED has active light emission and no view angle problem; the weight is light and the thickness is small; high brightness and high luminous efficiency; the luminescent material is abundant, easy to realize the colored display; the response speed is high, and the dynamic picture quality is high; the application temperature range is wide; soft display can be realized; the process is simple and the cost is low; strong shock resistance, etc., so it is known to experts as an ideal display in the future. The OLED is currently in the early stage of high-speed development, and its application market is mainly to replace the second generation display technology LCD, and the second is the incremental market, including wearable devices applied due to flexible display characteristics and VR applied by fast response, etc. Therefore, all large panel manufacturers are put into production and develop OLED modules. At present, gamma correction is required from production to shipment of the OLED module to ensure that the display effect meets the industry 2.2 standard curve.
However, in the current gamma adjustment process, due to the characteristics of part of the module IC: 1. the phenomenon of screen flashing in the adjusting process can cause the error collection of abnormal pictures by the CA310, so that the algorithm library is disordered and cannot be successful in gamma (as shown in figure 1); 2. and after adjustment, gray scale gradual change picture bright lines are displayed, and data are disordered.
Disclosure of Invention
The invention mainly solves the technical problems existing in the prior art; the method and the device for adjusting the white balance gamma of the OLED module ensure smooth transition of pictures, no flicker, the effect after gamma adjustment meets the 2.2 standard in the industry, the gray scale gradual change effect after adjustment does not have bright lines, and the effect meets the requirements of customers.
The technical problem of the invention is mainly solved by the following technical scheme:
the method for adjusting the gamma of the OLED module is characterized by comprising the following steps of:
s1) writing the first RGB register initial values of all the bindings into a gamma register;
s2) gamma adjustment is carried out on the high binding point or the low binding point, and RGB register values of the high binding point or the low binding point are obtained;
s3) multiplying the RGB adjustment ratio of the high binding point or the low binding point by the first RGB register initial value of the adjacent binding point to obtain a second RGB register initial value of the adjacent binding point;
s4) carrying out gamma adjustment on adjacent binding points to obtain RGB register values of the adjacent binding points;
s5) repeating the steps S3 and S4 to obtain RGB register values of all the binding points;
and the RGB adjustment ratio of the high binding point or the low binding point is the ratio of the RGB register value of the high binding point or the low binding point to the initial value of the first RGB register.
In the above method for adjusting gamma of an OLED module, the first RGB register initial value written in the gamma register in step S1 is issued by a script package, and the specific process is to send the first RGB register initial value package to a script, parse a data packet by a script build _ initgamma function, package the tie points as flags, and write the first RGB register initial values corresponding to the tie points into the module through a mirid 0 channel.
In the above method for adjusting gamma of an OLED module, after the gamma adjustment of the high or low binding point is completed, the obtained final RGB register value will cover the previously written RGB register value corresponding to the high or low binding point.
In the above method for adjusting gamma of an OLED module, the gamma adjustment of high binding points or low binding points is performed by using a syncdo gamma assistex script function and according to parameters pre-configured by a user.
In the above method for adjusting gamma of OLED module, R of adjacent binding pointsnThe register values are obtained based on the following formula:
wherein R isnR register value, R 'of the adjacent binding'nFirst R register initial value for the adjacent binding, Rn+1R register value, R ', of either a high binding or a low binding adjacent to the adjacent binding'n+1The first R register initial value of a high or low binding adjacent to the adjacent binding.
In the above-mentioned method for adjusting gamma of OLED module, G of adjacent binding pointsnThe register values are obtained based on the following formula:
wherein G isnG register value, G ', of the adjacent binding point'nFirst G register initial value, G, for the adjacent bindingn+1G register value, G ', of either a high binding or a low binding adjacent to the adjacent binding'n+1The first RGB register initial value of a high or low binding adjacent to the adjacent binding.
In the above-mentioned method for adjusting gamma of OLED module, B of adjacent binding pointsnThe register values are obtained based on the following formula:
wherein, BnB register value, B 'of the adjacent binding'nThe first B register initial value, B, of the adjacent bindingn+1Is a high binding point or a low binding point adjacent to the adjacent binding pointB register value of dot, R'n+1The first RGB register initial value of a high or low binding adjacent to the adjacent binding.
An OLED module gamma adjusting device, characterized by comprising:
an initial value writing module: the first RGB register initial value used for writing all the bindings into the gamma register;
a gamma adjusting module: the gamma adjustment is carried out on the high binding points or the low binding points to obtain RGB register values of the high binding points or the low binding points;
register initial value acquisition module: the RGB adjustment ratio value of the high binding point or the low binding point is multiplied by the first RGB register initial value of the adjacent binding point to obtain a second RGB register initial value of the adjacent binding point;
the gamma adjusting module is also used for carrying out gamma adjustment on the adjacent binding points to obtain RGB register values of the adjacent binding points;
and the RGB adjustment ratio of the high binding point or the low binding point is the ratio of the RGB register value of the high binding point or the low binding point to the initial value of the first RGB register.
A method for gamma adjustment of an OLED module, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor is configured to execute the computer program to perform the steps of the optimization method according to any one of claims 1 to 7.
Therefore, the invention has the following advantages: 1. the method has the characteristic of high regulation efficiency, the sending of the initial Gamma value before regulation is beneficial to the improvement of the efficiency, the optimal Gamma value can be quickly regulated, and the regulation speed of the same module is about 10 s; 2. the invention can solve gamma adjustment abnormity caused by partial IC characteristics, and can find that the adjustment process is smooth without displaying other abnormal pictures, flashing screens and the like by observing the switching process of the module gradual-change pictures in the adjustment process. The gamma effect presented by the module after adjustment has no bright line condition.
Drawings
FIG. 1 is a schematic diagram of the prior art that has the disadvantage of causing confusion in the algorithm library and failure of gamma success.
FIG. 2 is a schematic flow diagram of the process of the present invention.
Fig. 3 is a schematic diagram of writing of adjusting the issue of the start parameter in step 2 according to the embodiment of the present invention.
FIG. 4 is a schematic diagram of the crt printing result after the adjustment in step 5 according to the embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b):
firstly, a specific method implementation case of the present invention is introduced, and the present invention mainly includes:
The upper layer is electrified, and the gamma parameter configuration is normal. Click on gamma adjustment.
And 3, before the adjustment, the lower gamma initial value is before an 'adjustment' key is triggered, the upper layer packs gamma parameters (register address + register value) to a script, triggers a script built _ initgamma expndata function, analyzes a data packet by the script, packs binding points serving as marks, writes the value of the gamma register corresponding to the upper point into the module through a mipid0 channel, and the module is in a state of being written into the gamma register at the moment.
And 4, clicking and adjusting an adjusting action, triggering a SyncDoGamma AssistEx script function by an upper layer, starting to execute the adjusting action, and executing the adjusting action according to the gamma parameter configured in the step 1 and by combining a current adjusting algorithm. The W255 binding is first adjusted. After the W255 is adjusted, the R/G/B register value corresponding to 255 steps can be obtained, and if the value is: r1, G1, B1. In step two of this patent, all gamma register values are written in advance, including a set of gamma register values of W255, for example, the W255 register values are written as R2, G2, B2. The register values for the gray-scale nodes of W254 are scaled according to the following algorithm before adjusting W254 and written into the module. And (4) pushing the help points needing to be adjusted in the way, calculating the initial value needing to be written in the binding point according to the adjusted help points, and then adjusting the gamma of the W254 binding point on the basis of the initial value (by adopting the original adjusting algorithm).
The aim of the operation steps is to ensure that the gamma states of the front module are adjusted to be in a linear relation and meet the curve requirement; the register value of the upper point to be adjusted is larger than the gamma register value of the next upper point, so that the phenomenon that a larger default R/G/B register in a module is combined with the R/G/B value to be adjusted and written into the module to cause screen flashing is avoided, and even the influence on the adjusted binding point brightness and color coordinates is avoided; in the same batch production, the initial gamma value calculated according to the proportion is almost close to the target value, and during gamma adjustment, the target state can be adjusted by fewer adjustment steps, so that the adjustment time is optimized.
R of adjacent binding pointsnThe register values are obtained based on the following formula:
wherein R isnR register value, R 'of the adjacent binding'nFirst R register initial value for the adjacent binding, Rn+1R register value, R ', of either a high binding or a low binding adjacent to the adjacent binding'n+1The first R register initial value of a high or low binding adjacent to the adjacent binding.
G of adjacent bindingsnThe register values are obtained based on the following formula:
wherein G isnG register value, G ', of the adjacent binding point'nFirst G register initial value, G, for the adjacent bindingn+1G register value, G ', of either a high binding or a low binding adjacent to the adjacent binding'n+1The first RGB register initial value of a high or low binding adjacent to the adjacent binding.
B of adjacent bindingsnThe register values are obtained based on the following formula:
wherein, BnB register value, B 'of the adjacent binding'nThe first B register initial value, B, of the adjacent bindingn+1B register value, R ', of either a high binding or a low binding adjacent to the adjacent binding'n+1The first RGB register initial value of a high or low binding adjacent to the adjacent binding.
And 5, checking crt printing after the adjustment is finished, and verifying whether the writing condition of the initial gamma register value of gamma is consistent with an expected result or not, as shown in fig. 4.
In this embodiment, the sending of the initial Gamma value before the adjustment is beneficial to the improvement of efficiency, and the adjustment to the optimal value is faster, and the adjustment to the same module is faster by about 10 s.
| Number of times of adjustment | Normal gamma regulation | Sending gamma value before |
| 1 | 50s | 32 |
| 2 | 55s | 33 |
| 3 | 33.0 | 36 |
The invention also relates to a device comprising:
an initial value writing module: the first RGB register initial value used for writing all the bindings into the gamma register;
a primary gamma adjusting module: the gamma adjustment is carried out on the high binding points or the low binding points to obtain RGB register values of the high binding points or the low binding points;
register initial value acquisition module: the RGB adjustment ratio value of the high binding point or the low binding point is multiplied by the first RGB register initial value of the adjacent binding point to obtain a second RGB register initial value of the adjacent binding point;
a secondary gamma adjusting module: performing gamma adjustment on adjacent binding points to obtain RGB register values of the adjacent binding points;
and the RGB adjustment ratio of the high binding point or the low binding point is the ratio of the RGB register value of the high binding point or the low binding point to the initial value of the first RGB register.
Furthermore, the apparatus comprises a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor is configured to carry out the steps of the optimization method as set forth in the first item when executing the computer program.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. The method for adjusting the gamma of the OLED module is characterized by comprising the following steps of:
s1) writing the first RGB register initial values of all the bindings into a gamma register;
s2) gamma adjustment is carried out on the high binding point or the low binding point, and RGB register values of the high binding point or the low binding point are obtained;
s3) multiplying the RGB adjustment ratio of the high binding point or the low binding point by the first RGB register initial value of the adjacent binding point to obtain a second RGB register initial value of the adjacent binding point;
s4) gamma adjustment is carried out on the second RGB register initial value of the adjacent binding point, and the RGB register value of the adjacent binding point is obtained;
s5) repeating the steps S3, S4 to obtain RGB register values of the bindings adjacent to the high binding or the low binding;
and the RGB adjustment ratio of the high binding point or the low binding point is the ratio of the RGB register value of the high binding point or the low binding point to the initial value of the first RGB register.
2. The method for adjusting gamma of an OLED module as claimed in claim 1, wherein the first RGB register initial value written into the gamma register in step S1 is issued by a script package, and the specific process is that the first RGB register initial value package is issued to a script, the script build _ initgamma _ function parses the data packet, and the binding points are used as flags for packaging, and the first RGB register initial values corresponding to the binding points are written into the module through a pid0 channel.
3. The method as claimed in claim 1, wherein after gamma adjustment of the high or low binding point, the obtained final RGB register value overwrites the previously written RGB register value corresponding to the high or low binding point.
4. The method of claim 1, wherein the gamma adjustment for high-binding or low-binding is performed using a SyncDommaAssistEx script function according to parameters pre-configured by a user.
5. The method of claim 1, wherein the second R of adjacent bindings is greater than or equal to the first RnThe register values are obtained based on the following formula:
wherein R isnR register value, R 'of the adjacent binding'nFirst R register initial value for the adjacent binding, Rn+1R register value, R ', of either a high binding or a low binding adjacent to the adjacent binding'n+1The first R register initial value of a high or low binding adjacent to the adjacent binding.
6. The method of claim 1, wherein the second G of adjacent bindings is a gamma adjustment for the OLED modulenThe register values are obtained based on the following formula:
wherein G isnG register value, G ', of the adjacent binding point'nFirst G register initial value, G, for the adjacent bindingn+1G register value, G ', of either a high binding or a low binding adjacent to the adjacent binding'n+1The first G register initial value of a high or low binding adjacent to the adjacent binding.
7. The method of claim 1, wherein the second B of adjacent tie points isnThe register values are obtained based on the following formula:
wherein, BnB register value, B 'of the adjacent binding'nThe first B register initial value, B, of the adjacent bindingn+1B register value, B ', of either a high binding or a low binding adjacent to the adjacent binding'n+1The first B register initial value of a high or low binding adjacent to the adjacent binding.
8. An OLED module gamma adjusting device, characterized by comprising:
an initial value writing module: the first RGB register initial value used for writing all the bindings into the gamma register;
a gamma adjusting module: the gamma adjustment is carried out on the high binding points or the low binding points to obtain RGB register values of the high binding points or the low binding points;
register initial value acquisition module: the RGB adjustment ratio value of the high binding point or the low binding point is multiplied by the first RGB register initial value of the adjacent binding point to obtain a second RGB register initial value of the adjacent binding point;
the gamma adjustment module is also used for carrying out gamma adjustment on the second RGB register initial value of the adjacent binding point to obtain the RGB register value of the adjacent binding point;
and the RGB adjustment ratio of the high binding point or the low binding point is the ratio of the RGB register value of the high binding point or the low binding point to the initial value of the first RGB register.
9. An OLED module gamma adjustment device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor is configured to execute the computer program to perform the steps of the method according to any one of claims 1 to 7.
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| CN110767138B (en) | 2019-01-31 | 2020-12-04 | 昆山国显光电有限公司 | Gamma adjusting method and device for display panel and display equipment |
| CN109767729B (en) * | 2019-04-01 | 2023-10-31 | 广州国显科技有限公司 | Screen gamma debugging method and display module |
| CN111551348B (en) * | 2020-05-08 | 2022-03-25 | 昆山国显光电有限公司 | Gamma debugging method and device |
| CN114333670B (en) * | 2021-12-10 | 2023-06-30 | 北京镁伽科技有限公司 | Gamma correction method and device, electronic equipment and storage medium |
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