CN107578760A - Obtain the method and gray level compensation method, system of gray scale compensation gamma value - Google Patents
Obtain the method and gray level compensation method, system of gray scale compensation gamma value Download PDFInfo
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Abstract
The invention discloses a kind of method and gray level compensation method, system for obtaining gray scale compensation gamma value.This method includes：Obtain brightness value corresponding to each GTG at least one set of GTG group and at least one set of GTG group；According to brightness value corresponding to each GTG at least one set of GTG group and at least one set of GTG group, the variance of brightness value corresponding to each GTG at least one set of GTG group is obtained；Using gamma value corresponding to the minimum GTG group of variance as compensation gamma value.By the above-mentioned means, the present invention can obtain rational compensation gamma value.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of method and GTG for obtaining gray scale compensation gamma value
Compensation method, system.
Background technology
GTG, be by it is most bright with it is most dark between brightness change, divide into several pieces.It is relative in order to carry out signal input
The screen intensity management and control answered.Every digitized video all forms as combined by many points, and these points are also known as pixel
(pixels), generally each pixel can show many different colors, and it is by three sub-pixels of red, green, blue (RGB)
Composition.Each sub-pixel, the light source of its behind can show different gray scales.And GTG is represented by most dark
To the stratum level of different brightness between most bright.This intermediate level is more, and the picture effect that can be presented is also finer and smoother.
GTG self compensating system (Auto gamma) is entered for the gray-scale intensity to display panel and flicker situation
The system of row adjustment.Display panel after the adjustment of GTG self compensating system has qualified and unqualified point, and GTG is automatic
Compensation system processing adjustment result is that the time required for underproof display panel to be greater than processing adjustment result be qualified
Time required for display panel.The compensation gamma value for being presently used for GTG self compensating system can not be according to display panel not
Concrete condition with batch is adjusted, and influences the qualification rate of display panel after automatic compensation.
The content of the invention
In view of this, the present invention solves the technical problem of provide it is a kind of obtain gray scale compensation gamma value method with
And gray level compensation method, system, rational compensation gamma value can be obtained.
In order to solve the above technical problems, one aspect of the present invention is：A kind of acquisition gray scale compensation gal is provided
The method of horse value,
This method includes：Obtain brightness value corresponding to each GTG at least one set of GTG group and at least one set of GTG group；
According to brightness value corresponding to each GTG at least one set of GTG group and at least one set of GTG group, obtain at least one set of GTG group
The variance of brightness value corresponding to each GTG；Using gamma value corresponding to the minimum GTG group of variance as compensation gamma value.
In order to solve the above technical problems, another technical scheme that the present invention uses is：A kind of ash of display panel is provided
Rank compensation method,
This method includes：The qualification rate of display panel is detected, if display panel qualification rate is less than default qualification rate, is obtained
Brightness value corresponding to each GTG in the GTG group and GTG group of at least one set of display panel detected；It is aobvious according at least one set
Show brightness value corresponding to each GTG in the GTG group and GTG group of panel, obtain compensation gamma value；It is right according to compensation gamma value
Underproof display panel compensates.
In order to solve the above technical problems, another technical scheme that the present invention uses is：A kind of ash of display panel is provided
Rank compensation system,
The system includes controller and sensor, controller connection sensor, and sensor is used to obtain detection signal, controlled
Device configuration processor processed is to realize following action：
The qualification rate of display panel is judged according to the detection signal of sensor acquisition, if display panel qualification rate is less than pre-
If qualification rate, then brightness corresponding to each GTG in the GTG group and GTG group of at least one set of display panel detected is obtained
Value；According to brightness value corresponding to each GTG in the GTG group and GTG group of at least one set of display panel, compensation gamma value is obtained；
According to compensation gamma value, underproof display panel is compensated.
The beneficial effects of the invention are as follows：Gamma average value is taken to make according to the brightness value under different GTGs compared to prior art
To compensate gamma value, present invention brightness value according to corresponding to each GTG at least one set of GTG group and GTG group, obtain at least
The variance of each GTG corresponding brightness value in one group of GTG group, gamma value using the minimum GTG group of variance as compensating gamma value,
Rational compensation gamma value can be obtained.
Brief description of the drawings
Fig. 1 is the schematic flow sheet for the embodiment of method one that the present invention obtains gray scale compensation gamma value；
Fig. 2 is the curve synoptic diagram of 5 groups of display panel gamma values of method shown in Fig. 1；
Fig. 3 is the curve synoptic diagram that the 3rd group of display panel gamma value compensation is front and rear in 5 groups of display panels shown in Fig. 2；
Fig. 4 is the schematic flow sheet of the embodiment of display panel gray level compensation method one of the present invention；
Fig. 5 is the structural representation of the embodiment of display panel gray scale compensation system one of the present invention；
Fig. 6 is the schematic flow sheet that display panel gray scale compensation system of the present invention carries out the embodiment of gray scale compensation one.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
Referring to Fig. 1, Fig. 1 is the schematic flow sheet for the embodiment of method one that the present invention obtains gray scale compensation gamma value.
S101：Obtain brightness value corresponding to each GTG at least one set of GTG group and at least one set of GTG group；
In this example it is shown that the GTG group of panel can be 0 to 255 256 GTG groups being situated between, certainly, such as ability
Field technique personnel are understood that the GTG group digit of display panel is the integral number power of natural number 2, and 256 GTGs are natural number 2
8 power digits, the GTG group gradation of display panel are not limited to 256 GTGs in the present embodiment, can be natural number 2
Other integral number power digits, are not limited herein.
In the present embodiment, each GTG in the GTG group and GTG group of photosensitive sensor collection display panel can be used
Corresponding brightness value information.
S102：According to brightness value corresponding to each GTG at least one set of GTG group and at least one set of GTG group, obtain extremely
The variance of brightness value corresponding to each GTG in few one group of GTG group；
In the present embodiment, it is that brightness value corresponding to 255 turns to 1 by GTG in above-mentioned GTG group, its in every group of GTG group
Brightness value corresponding to his GTG is scaled decimal form according to the brightness value that GTG in each group GTG group is 255 is proportional；Afterwards
Obtain the average value of brightness value corresponding to each GTG in every group of GTG group after conversion；According to average value, obtain every after conversion
The variance of brightness value corresponding to each GTG in group GTG group.
One embodiment of brightness value variance corresponding to each GTG in each GTG group, such as ability are obtained for the present embodiment above
Field technique personnel are understood, are obtained brightness value variance corresponding to each GTG in each GTG group and are not limited to the above method, can be not required to
Brightness value corresponding to 255 GTGs is turned to 1, but brightness value corresponding to each GTG directly calculates variance in each GTG group,
Do not limit herein.
S103：Using gamma value corresponding to the minimum GTG group of variance as compensation gamma value；
In the present embodiment, the gamma value of the minimum GTG group of brightness value variance corresponding to each GTG in each GTG group is recognized
It is set to rational compensation gamma value, gamma compensated is carried out to display panel with the compensation gamma value, the brightness of display panel is adjusted
It is whole in acceptability limit.
Alternatively, the present embodiment can also include the reference voltage of adjustment display panel compensation, reduce flicker of display panel
Situation.
In the following embodiments, will be elaborated by taking 5 groups of GTG groups as an example in above-described embodiment elaboration obtain compensation gal
The method of horse value.
In the present embodiment, the brightness corresponding to part gray-scale in the GTG group and GTG group of 5 groups of display panels is obtained
Value, as shown in table (1)：
Table (1)
In the present embodiment, in order to illustrate needs, the part gray-scale that have selected in one group of GTG group in 256 GTGs is corresponding
Brightness value, you can represent the brightness value situation of the GTG group.Certainly, as this technology personnel understand, selected gradation
More, result of calculation is more accurate, in actual production, can select 10 groups, 100 groups or even more display panels, herein
Do not limit.
In the present embodiment, it is that brightness value corresponding to 255 turns to 1 by GTG in above-mentioned 5 groups of GTG groups, in every group of GTG group
Brightness value corresponding to other GTGs is scaled decimal form according to the brightness value that GTG in each group GTG group is 255 is proportional, such as
Shown in table (2)：
Table (2)
The average value of brightness value corresponding to each GTG in every group of GTG group after conversion is obtained afterwards, as shown in table (3)：
Table (3)
| GTG | Average value |
| 0 | 0 |
| 15 | 0.011981 |
| 31 | 0.031695 |
| 127 | 0.282165 |
| 223 | 0.773564 |
| 254 | 0.990394 |
| 255 | 1 |
According to average value, the variance of brightness value corresponding to each GTG in every group of GTG group after conversion is obtained, variance is each
The average of the quadratic sum of individual data and the difference of average, formula are as follows：
Wherein x represents the average of sample, and n represents the quantity of sample, xiRepresent individual, and s2Mean that variance.
As a result as shown in table (4)：
Table (4)
From table (4) it can be seen that the brightness value variance of the 4th group of GTG group is minimum, therefore with the 4th group of gal corresponding to GTG group
Horse value is shown as compensation gamma value, the gamma value information such as table (5) of the 4th group of GTG group：
Table (5)
By taking above-mentioned 5 groups of acquired display panels as an example：Referring to Fig. 2, Fig. 2 is 5 groups of display panels of method shown in Fig. 1
The curve synoptic diagram of gamma value.It can be seen in fig. 2 that the gamma curve of the 4th group of GTG group is in 5 groups of GTG group gamma curves
Between, it is consistent with the result for the compensation gamma value that above-described embodiment is tried to achieve, illustrate the present embodiment output reasonable compensation gamma value
Correctness；The 3rd group of threshold range will be exceeded in 5 groups of display panels of above-mentioned acquisition according to above-mentioned compensation gamma value, carried out
Compensation, compensation result is as shown in Figure 3, it can be seen that the group of gamma value after compensation has been adjusted to threshold range, meets conjunction
The standard of lattice display panel.
Above as can be seen that the brightness of the invention according to corresponding to each GTG in acquired multigroup GTG group and GTG group
Value, the variance of brightness value corresponding to each GTG in multigroup the GTG group and GTG group is obtained, by the minimum GTG group of variance
Gamma value is as compensation gamma value, so as to which one group of output reasonably compensates gamma value.
Referring to Fig. 4, Fig. 4 is the schematic flow sheet of the embodiment of display panel gray level compensation method one of the present invention.
S401：Obtain the qualification rate of the display panel detected；
In the present embodiment, if the qualification rate of the display panel detected is not less than default qualification rate, step is continued executing with
Rapid S401；If the qualification rate of the display panel detected is less than default qualification rate, step S402 is performed；
Alternatively, it is 85% that qualification rate is preset in the present embodiment, certainly, as skilled in the art to understand, presets and closes
Lattice rate is not limited to 85% in the present embodiment, and it is depending on the capacity requirements of production line to preset qualification rate, and it is qualified to preset
The setting of rate need to meet the capacity requirements of different production lines, not limit herein.
In the present embodiment, if the brightness value of display panel exceedes threshold range, display panel is unqualified, if display surface
The brightness value of plate is not above threshold range, then display panel is qualified.As skilled in the art to understand, shown by adjusting
The gamma electric voltage of panel adjusts the brightness value of display panel, in the present embodiment, mark is proposed in the design phase of display panel
Quasi- gamma value is 2.2 ± 0.2 scope, and the threshold range in the present embodiment can be the standard gamma value 2.2 ± 0.2, certainly,
Threshold range is to need to be determined according to the display of display panel, and threshold range can be according to the display needs of different display panels
Different range intervals are chosen, are not limited herein.
S402：Obtain brightness corresponding to each GTG in the GTG group and GTG group of at least one set of display panel detected
Value；
In the present embodiment, photosensitive sensor is used to obtain each GTG pair in the GTG group of display panel and GTG group
The brightness value answered.
Certainly, as skilled in the art to understand, the display panel group number of acquisition can be according to required compensation gamma value
The degree of accuracy set, herein only discussion demand not display panel group number is defined, acquired display panel
Group number is more, and resulting compensation gamma value is more representative, and the reasonability of the compensation to display panel can more be guaranteed,
Do not limit herein.
S403：According to brightness value corresponding to each GTG in the GTG group and GTG group of at least one set of display panel, obtain
Compensate gamma value；
In the present embodiment, it is that brightness value corresponding to 255 turns to 1 by GTG in every group of GTG group, its in every group of GTG group
Brightness value corresponding to his GTG is scaled decimal form according to the brightness value that GTG in each group GTG group is 255 is proportional；Afterwards
Obtain the average value of brightness value corresponding to each GTG in every group of GTG group after conversion；According to average value, obtain every after conversion
The variance of brightness value corresponding to each GTG in group GTG group.
Variance is the average of the quadratic sum of each data and the difference of average, and formula is as follows：
Wherein x represents the average of sample, and n represents the quantity of sample, xiRepresent individual, and s2Mean that variance.
Finally, using gamma value corresponding to the minimum GTG group of variance as compensation gamma value
One embodiment of brightness value variance corresponding to each GTG in each GTG group, such as ability are obtained for the present embodiment above
Field technique personnel are understood, are obtained brightness value variance corresponding to each GTG in each GTG group and are not limited to the above method, can be not required to
Brightness value corresponding to 255 GTGs is turned to 1, but brightness value corresponding to each GTG directly calculates variance in each GTG group,
Do not limit herein.
S404：According to compensation gamma value, to detecting underproof display panel and follow-up display panel to be detected
Compensate；
In the present embodiment, according to the compensation gamma value of above-mentioned acquisition, original compensation gamma value is replaced, for detection
Cross underproof display panel and follow-up display panel to be detected carries out gamma compensated operation, to improve the conjunction of display panel
Lattice rate.
S405：Adjust the reference voltage of gray scale compensation；
In the present embodiment, by adjusting the reference voltage of gray scale compensation, the flashing state of display panel is made to be reduced to most
Low-level, the reference voltage of the adjustment gray scale compensation is those skilled in the art's customary means, is just repeated no more herein.
Above as can be seen that the present invention counts the qualification rate of display panel, when qualification rate is less than default qualification rate, according to
Brightness value corresponding to each GTG at least one set of the GTG group and GTG group that detected, obtains each ash at least one set of GTG group
The variance of rank corresponding brightness value, using the gamma value of the minimum GTG group of variance as compensation gamma value, rational benefit can be obtained
Gamma value is repaid, is compensated to detecting underproof display panel and follow-up display panel to be detected.
Fig. 5-6 is referred to, Fig. 5 is the structural representation of the embodiment of display panel gray scale compensation system one of the present invention, and Fig. 6 is
Display panel gray scale compensation system of the present invention carries out the schematic flow sheet of the embodiment of gray scale compensation one.
In the present embodiment, system 501 includes controller 502 and sensor 503, and controller 502 connects sensor
503。
S601：Start sensor；
Sensor 503 is used to obtain detection signal, and sensor 503 can be photosensitive sensor, for obtaining detection display
The optical signal of panel, and optical signal transmission is handled optical signal to controller 502, controller 502.
Alternatively, controller judges whether display panel is qualified, if the brightness value of display panel exceedes threshold range, shows
It is unqualified to show panel；If the brightness of display panel is not above threshold range, display panel is qualified.
S602：Compensation gamma value is detected whether；
In the present embodiment, controller 502 detects whether to be stored with compensation gamma value, if there is storage compensation gamma value,
Step S603 is performed, if not storing compensation gamma value, performs step S604.
S603：Gamma value input controller will be compensated；
In the present embodiment, controller 502 calls compensation gamma value to carry out gamma compensated, adjusts the gamma electricity of display panel
Pressure, so as to adjust the brightness value of display panel.
S604：Obtain compensation gamma value and brightness value threshold range；
In the present embodiment, controller 502 detects whether input offset gamma value, if the input of controller 502 has compensation
Gamma value, then controller 502 gamma compensated is carried out with the compensation gamma value that has inputted, if controller 502 does not have input offset gal
Horse value, then 2.2 are taken as compensation gamma value and is inputted controller 502.
Alternatively, the standard gamma value that gamma value 2.2 is proposed by the display panel production design phase,
Alternatively, controller 502 detects the qualification rate of display panel, if qualification rate is less than default qualification rate, illustrates at present
Compensation gamma value for gamma compensated no longer has reasonability, it is necessary to which one group of output reasonably compensates gamma value again, therefore
Brightness value corresponding to each GTG in the GTG group and GTG group of multigroup display panel that the calling of controller 502 detected, passes through
One group of the method output of the acquisition compensation gamma value illustrated in above-described embodiment reasonably compensates gamma value, just no longer superfluous herein
State, replace original compensation gamma value in controller 502, gamma compensated is carried out to underproof display panel.
Alternatively, it is 85% that qualification rate is preset in the present embodiment, certainly, as skilled in the art to understand, presets and closes
Lattice rate is not limited to 85% in the present embodiment, and it is depending on the capacity requirements of production line to preset qualification rate, and it is qualified to preset
The setting of rate need to meet the capacity requirements of different production lines, not limit herein.
Alternatively, because in actual production process, the reason such as processing procedure drift, the gamma value of display panel can be in standard gamma
Value 2.2 fluctuates, and causes the gamma value of display panel to exceed error permissible range, causes the gamma value of display panel not conform to
Lattice.It is qualified gamma value scope in the range of in the present embodiment can be with established standardses gamma value 2.2 ± 0.2, certainly, such as originally
Art personnel are understood, above-mentioned gamma value scope be depending on display panel actual production demand, can be according to difference
Display panel set different gamma value scope, do not limit herein.
In the present embodiment, brightness value threshold range is light signal strength corresponding to above-mentioned gamma value scope.In display surface
In plate, it is adjusted by brightness of the gamma electric voltage to display panel, that is, light signal strength is adjusted, therefore, this is pre-
It is light signal strength corresponding to 2.2 ± 0.2 scopes that if range of luminance values, which is above-mentioned gamma value,.
S605：Whether the brightness value of detection display panel exceedes brightness value threshold range；
In the present embodiment, if the brightness value of display panel exceedes brightness value threshold range, step S606 is performed, if aobvious
Show that the brightness value of panel is not above brightness value threshold range, then perform step S607.
Alternatively, one piece of display panel is often detected, controller 502 shows before recording the numbering of the display panel, compensation
Show panel gamma value and corresponding gray-scale intensity values.
S606：Adjust the brightness value of display panel；
In the present embodiment, controller 502 carries out gamma compensated according to compensation gamma value to display panel, adjusts display surface
The gamma electric voltage of plate, so as to be adjusted to the brightness value of display panel, it is adjusted in brightness value threshold range.
S607：Adjust the reference voltage of gray scale compensation；
In the present embodiment, controller 502 makes the flashing state of display panel by adjusting the reference voltage of gray scale compensation
Floor level is reduced to, the reference voltage of the adjustment gray scale compensation is those skilled in the art's customary means, herein just no longer
Repeat.
S608：Record the brightness value and gamma value of display panel；
In the present embodiment, controller 502 record display panel brightness value and gamma value, for controller 502
Brightness value and gamma value contrast before the display panel compensation of record, if the gamma value of display panel is generally located in processing procedure at present
In the state higher than standard gamma value 2.2, then when display panel qualification rate is less than default qualification rate, pass through above-described embodiment institute
One group of the method output of elaboration reasonably compensates gamma value, can adjust display panel gamma value in current fabrication process and be higher by standard gamma
The trend of value, if the gamma value of display panel is generally in the state less than standard gamma value 2.2 in processing procedure at present, work as display
When panel qualification rate is less than default qualification rate, one group of the method output illustrated by above-described embodiment reasonably compensates gamma
Value, the trend that display panel gamma value in current fabrication process is less than standard gamma value can be adjusted.
In summary, the present invention counts the qualification rate of display panel by controller, when qualification rate is less than default qualification rate
When, according to brightness value corresponding to each GTG at least one set of the GTG group and GTG group that sensor acquisition testing is crossed, obtain to
The variance of each GTG corresponding brightness value in few one group of GTG group, using the gamma value of the minimum GTG group of variance as compensation gamma
Value, one group of output reasonably compensate gamma value, follow-up display panel are compensated.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, it is included within the scope of the present invention.
Claims (10)
- A kind of 1. method for obtaining gray scale compensation gamma value, it is characterised in that methods described includes：Obtain brightness value corresponding to each GTG at least one set of GTG group and at least one set of GTG group；According to brightness value corresponding to each GTG at least one set of GTG group and at least one set of GTG group, described in acquisition The variance of brightness value corresponding to each GTG at least one set of GTG group；Using gamma value corresponding to the minimum GTG group of the variance as compensation gamma value.
- 2. according to the method for claim 1, it is characterised in thatDescribed obtain specifically includes at least one set of GTG group corresponding to each GTG the step of the variance of brightness value：It is that brightness value corresponding to 255 turns to 1 by GTG in every group of GTG group, brightness value corresponding to other GTGs in every group of GTG group Decimal form is scaled according to the brightness value that GTG in each group GTG group is 255 is proportional；AfterwardsObtain the average value of brightness value corresponding to each GTG in every group of GTG group after conversion；According to the average value, the variance of brightness value corresponding to each GTG in every group of GTG group after acquisition conversion.
- 3. a kind of gray level compensation method of display panel, it is characterised in that methods described includes：Qualification rate is preset when the display panel qualification rate detected is less than, then obtains the ash of at least one set of display panel detected Brightness value corresponding to each GTG in rank group and GTG group；According to brightness value corresponding to each GTG in the GTG group and GTG group of at least one set of display panel, obtain described in extremely The variance of brightness value corresponding to each GTG in few one group of GTG group, using gamma value corresponding to the minimum GTG group of the variance as Compensate gamma value；According to the compensation gamma value, mended to detecting underproof display panel and follow-up display panel to be detected Repay.
- 4. according to the method for claim 3, it is characterised in that the GTG group for obtaining at least one set of display panel In specifically included corresponding to each GTG the step of the variance of brightness value：It is that brightness value corresponding to 255 turns to 1 by GTG in every group of GTG group, brightness value corresponding to other GTGs in every group of GTG group Decimal form is scaled according to the brightness value that GTG in each group GTG group is 255 is proportional；AfterwardsObtain the average value of brightness value corresponding to each GTG in every group of GTG group after conversion；According to the average value, the variance of brightness value corresponding to each GTG in every group of GTG group after acquisition conversion.
- 5. according to the method for claim 3, it is characterised in that methods described further comprises step：Whether qualified detect display panel, if the brightness value of display panel exceedes threshold range, display panel is unqualified；If The brightness of display panel is not above threshold range, then display panel is qualified, and then obtains the display panel detected Qualification rate.
- 6. according to the method for claim 3, it is characterised in that methods described further comprises step：Adjust gray scale compensation Reference voltage, to reduce the flicker of display panel.
- A kind of 7. gray scale compensation system of display panel, it is characterised in that the system includes controller, the controller to Realize following action：Qualification rate is preset when the display panel qualification rate detected is less than, then obtains the ash of at least one set of display panel detected Brightness value corresponding to each GTG in rank group and GTG group；According to brightness value corresponding to each GTG in the GTG group and GTG group of at least one set of display panel, obtain described in extremely The variance of brightness value corresponding to each GTG in few one group of GTG group, using gamma value corresponding to the minimum GTG group of the variance as Compensate gamma value；According to the compensation gamma value, mended to detecting underproof display panel and follow-up display panel to be detected Repay.
- 8. system according to claim 7, it is characterised in that described to obtain each GTG pair at least one set of GTG group The step of variance for the brightness value answered, specifically includes：It is that brightness value corresponding to 255 turns to 1 by GTG in every group of GTG group, brightness value corresponding to other GTGs in every group of GTG group Decimal form is scaled according to the brightness value that GTG in each group GTG group is 255 is proportional；AfterwardsObtain the average value of brightness value corresponding to each GTG in every group of GTG group after conversion；According to the average value, the variance of brightness value corresponding to each GTG in every group of GTG group after acquisition conversion.
- 9. system according to claim 7, it is characterised in that the controller is additionally operable to judge whether display panel closes Lattice, if the brightness value of display panel exceedes threshold range, display panel is unqualified；If the brightness of display panel is not above Threshold range, then display panel is qualified, and then obtains the qualification rate of the display panel detected.
- 10. system according to claim 7, it is characterised in that the controller is additionally operable to adjust the reference of gray scale compensation Voltage, to reduce the flicker of display panel.
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| CN108550345A (en) * | 2018-07-12 | 2018-09-18 | 成都京东方光电科技有限公司 | Gamma correction method and device, display device, computer storage media |
| CN110381276A (en) * | 2019-05-06 | 2019-10-25 | 华为技术有限公司 | A kind of video capture method and electronic equipment |
| WO2020093495A1 (en) * | 2018-11-09 | 2020-05-14 | 重庆先进光电显示技术研究院 | Method and device for adjusting gamma value of display panel |
| CN111521375A (en) * | 2020-04-23 | 2020-08-11 | 惠州市华星光电技术有限公司 | Gamma value determination method and device |
| US10819885B2 (en) | 2018-11-09 | 2020-10-27 | Chongqing Advance Display Technology Research | Gamma value tuning method and device of display panel |
| WO2022022005A1 (en) * | 2020-07-29 | 2022-02-03 | 昆山工研院新型平板显示技术中心有限公司 | Brightness parameter correction method and device, and brightness compensation system |
| CN114067616A (en) * | 2020-07-29 | 2022-02-18 | 深圳Tcl数字技术有限公司 | Dynamic contrast ratio quantification method, device and equipment and readable storage medium |
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Address after: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |