CN107578760B - 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 methods and gray level compensation method, system for obtaining gray scale compensation gamma value.This method comprises: obtaining the corresponding brightness value of each grayscale at least one set of grayscale group and each grayscale group；According to the corresponding brightness value of grayscale each at least one set of grayscale group and each grayscale group, the variance of the corresponding brightness value of each grayscale in each grayscale group is obtained；Using the corresponding gamma value of the smallest grayscale group of variance as compensation gamma value.By the above-mentioned means, the present invention can obtain reasonable compensation gamma value.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of method and grayscale for obtaining gray scale compensation gamma value
Compensation method, system.
Background technique
Grayscale, be by it is most bright with it is most dark between brightness change, divide into several pieces.It is opposite in order to carry out signal input
The screen intensity control answered.Every digitized video be all as combined by many points made of, these point be also known as pixel
(pixels), usually each pixel can show many different colors, it is by three sub-pixels of red, green, blue (RGB)
Composition.The light source of each sub-pixel, behind can show different gray scales.And grayscale 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.
Grayscale self compensating system (Auto gamma) be for display panel gray-scale intensity and flashing situation into
The system of row adjustment.Through grayscale self compensating system display panel adjusted be divided into it is qualified with it is unqualified, and grayscale is automatic
Compensation system processing adjustment result be greater than the time required for underproof display panel processing adjustment result be qualified
Time required for display panel.Currently, the compensation gamma value for grayscale self compensating system cannot be according to display panel not
Concrete condition with batch is adjusted, and influences the qualification rate of display panel after compensating automatically.
Summary of the invention
In view of this, the invention mainly solves the technical problem of providing it is a kind of obtain gray scale compensation gamma value method with
And gray level compensation method, system, reasonable compensation gamma value can be obtained.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of acquisition gray scale compensation gal is provided
The method of horse value,
This method comprises: obtaining the corresponding brightness value of each grayscale at least one set of grayscale group and each grayscale group；According to extremely
The corresponding brightness value of each grayscale in few one group of grayscale group and each grayscale group obtains the corresponding brightness value of each grayscale in each grayscale group
Variance；Using the corresponding gamma value of the smallest grayscale group of variance as compensation gamma value.
In order to solve the above technical problems, another technical solution that the present invention uses is: providing a kind of ash of display panel
Rank compensation method,
This method comprises: the qualification rate of detection display panel obtains if display panel qualification rate is lower than default qualification rate
The corresponding brightness value of each grayscale in the grayscale group of at least one set of display panel detected and each grayscale group；According at least one set
The corresponding brightness value of each grayscale, it is corresponding bright to obtain each grayscale in each grayscale group in the grayscale group of display panel and each grayscale group
The variance of angle value, using the corresponding gamma value of the smallest grayscale group of variance as compensation gamma value；According to compensation gamma value, to detection
It crosses underproof display panel and subsequent display panel to be detected compensates.
In order to solve the above technical problems, another technical solution that the present invention uses is: providing a kind of ash of display panel
Rank compensation system,
The system includes controller, and controller is to realize following movement:
Qualification rate is preset when the display panel qualification rate detected is lower than, then obtains at least one set of display panel detected
Grayscale group and each grayscale group in the corresponding brightness value of each grayscale；According to the grayscale group of at least one set of display panel and each ash
The corresponding brightness value of each grayscale in rank group obtains the variance of the corresponding brightness value of each grayscale in each grayscale group, and variance is the smallest
The corresponding gamma value of grayscale group is as compensation gamma value；According to compensation gamma value, to detected underproof display panel and
Subsequent display panel to be detected compensates.
The beneficial effects of the present invention are: taking gamma average value to make according to the brightness value under different grayscale compared with the prior art
To compensate gamma value, the present invention is found out each according to the corresponding brightness value of grayscale each at least one set of grayscale group and each grayscale group
The variance of each grayscale corresponding brightness value in grayscale group can using the gamma value of the smallest grayscale group of variance as compensation gamma value
Obtain reasonable compensation gamma value.
Detailed description of the invention
Fig. 1 is the flow diagram for one embodiment of method 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 of the 3rd group of display panel gamma value compensation front and back in 5 groups of display panels shown in Fig. 2；
Fig. 4 is that the invention shows the flow diagrams of one embodiment of panel gray level compensation method；
Fig. 5 is that the invention shows the structural schematic diagrams of one embodiment of panel gray scale compensation system；
Fig. 6 is that the invention shows the flow diagrams that panel gray scale compensation system carries out one embodiment of gray scale compensation.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
Referring to Fig. 1, Fig. 1 is the flow diagram for one embodiment of method that the present invention obtains gray scale compensation gamma value.
S101: the corresponding brightness value of each grayscale at least one set of grayscale group and each grayscale group is obtained；
In this example it is shown that 256 grayscale groups that the grayscale group of panel can be situated between for 0 to 255, certainly, such as ability
Field technique personnel are understood that the grayscale group digit of display panel is the integral number power of natural number 2, and 256 grayscale are natural number 2
8 power digits, the grayscale group gradation of display panel be not limited to the present embodiment in 256 grayscale, can be for natural number 2
Other integral number power digits, it is not limited here.
It in the present embodiment, can be using each grayscale in the grayscale group and grayscale group of photosensitive sensor acquisition display panel
Corresponding brightness value information.
S102: according to the corresponding brightness value of grayscale each at least one set of grayscale group and each grayscale group, each grayscale group is obtained
In the corresponding brightness value of each grayscale variance；
It in the present embodiment, is that 255 corresponding brightness values turn to 1 by grayscale in above-mentioned grayscale group, its in every group of grayscale group
The corresponding brightness value of his grayscale is scaled decimal form according to the brightness value that grayscale in each group grayscale group is 255 is proportional；Later
The average value of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion；It is every after obtaining conversion according to average value
The variance of the corresponding brightness value of each grayscale in group grayscale group.
The above are one embodiment that the present embodiment obtains the corresponding brightness value variance of each grayscale in each grayscale group, such as abilities
Field technique personnel are understood, are obtained the corresponding brightness value variance of each grayscale in each grayscale group and are not limited to the above method, can be not required to
The corresponding brightness value of 255 grayscale is turned to 1, but the corresponding brightness value of each grayscale directly calculates variance in each grayscale group,
It is not limited here.
S103: using the corresponding gamma value of the smallest grayscale group of variance as compensation gamma value；
In the present embodiment, the gamma value of the corresponding the smallest grayscale group of brightness value variance of grayscale each in each grayscale group is recognized
It is set to reasonable compensation gamma value, gamma compensated is carried out to display panel with the compensation gamma value, by the brightness tune of display panel
It is whole in acceptability limit.
Optionally, the present embodiment can also include the reference voltage of adjustment display panel compensation, reduce flicker of display panel
The case where.
In the following embodiments, it will be elaborated by taking 5 groups of grayscale groups as an example in above-described embodiment and illustrate acquisition compensation gal
The method of horse value.
In the present embodiment, brightness corresponding to part gray-scale in the grayscale group and grayscale 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, selected the part gray-scale in one group of grayscale group in 256 grayscale corresponding
Brightness value, the brightness value situation of the grayscale group can be represented.Certainly, as this technology personnel understand, selected gradation
More, calculated result is more accurate, in actual production, can choose 10 groups, 100 groups of even more display panels, herein
Without limitation.
It in the present embodiment, is that 255 corresponding brightness values turn to 1 by grayscale in above-mentioned 5 groups of grayscale groups, in every group of grayscale group
The corresponding brightness value of other grayscale is scaled decimal form according to the brightness value that grayscale in each group grayscale group is 255 is proportional, such as
Shown in table (2):
Table (2)
The average value of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion later, as shown in table (3):
Table (3)
| Grayscale | 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 the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion, variance is each
The average of the quadratic sum of a data and the difference of average, formula are as follows:
Wherein x indicates that the average of sample, n indicate the quantity of sample, xiIndicate 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 grayscale group is minimum, therefore with the 4th group of corresponding gal of grayscale group
Horse value is as compensation gamma value, shown in the gamma value information such as table (5) of the 4th group of grayscale 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 grayscale group is located in 5 groups of grayscale group gamma curves
Between, it is consistent with the obtained compensation result of gamma value of above-described embodiment, illustrate the present embodiment output reasonable compensation gamma value
Correctness；It will be more than the 3rd group of threshold range in 5 groups of display panels of above-mentioned acquisition according to above-mentioned compensation gamma value, carry out
Compensation, compensation result is as shown in Figure 3, it can be seen that compensated the group of gamma value has been adjusted to threshold range, meets conjunction
The standard of lattice display panel.
Above as can be seen that the present invention is corresponding bright according to each grayscale in acquired multiple groups grayscale group and each grayscale group
Angle value finds out the variance of the corresponding brightness value of each grayscale in the multiple groups grayscale group and each grayscale group, by the smallest grayscale of variance
The gamma value of group is as compensation gamma value, so that one group of output reasonably compensates gamma value.
Referring to Fig. 4, Fig. 4 is that the invention shows the flow diagrams of one embodiment of panel gray level compensation method.
S401: the qualification rate of the display panel detected is obtained；
In the present embodiment, if the qualification rate of the display panel detected is not less than default qualification rate, step is continued to execute
Rapid S401；If the qualification rate of the display panel detected is lower than default qualification rate, S402 is thened follow the steps；
Optionally, it is 85% that qualification rate is preset in the present embodiment, certainly, as understood by those skilled in the art, presets and closes
Lattice rate be not limited to the present embodiment in 85%, preset qualification rate be depending on the capacity requirements of production line, preset qualification
The setting of rate need to meet the capacity requirements of different production lines, it is not limited here.
In the present embodiment, if the brightness value of display panel is more than 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 understood by those skilled in the art, by adjusting display
The gamma electric voltage of panel proposes mark in the design phase of display panel in the present embodiment to adjust the brightness value of display panel
The range that quasi- gamma value is 2.2 ± 0.2, the threshold range in the present embodiment can be the standard gamma value 2.2 ± 0.2, certainly,
Threshold range is to determine that threshold range can be according to the display needs of different display panels according to the display of display panel needs
Different range intervals are chosen, it is not limited here.
S402: it is corresponding bright to obtain each grayscale in the grayscale group and each grayscale group of at least one set of display panel detected
Angle value；
In the present embodiment, photosensitive sensor is used to obtain each grayscale pair in the grayscale group and grayscale group of display panel
The brightness value answered.
Certainly, as understood by those skilled in the art, the display surface board group number of acquisition can be according to required compensation gamma value
Accuracy set, herein only discussion demand not display surface board group number is defined, acquired display panel
Group number is more, and obtained compensation gamma value is more representative, can more be guaranteed to the reasonability of the compensation of display panel,
It is not limited here.
S403: it according to the corresponding brightness value of grayscale each in the grayscale group of at least one set of display panel and each grayscale group, obtains
Take compensation gamma value；
It in the present embodiment, is that 255 corresponding brightness values turn to 1 by grayscale in every group of grayscale group, its in every group of grayscale group
The corresponding brightness value of his grayscale is scaled decimal form according to the brightness value that grayscale in each group grayscale group is 255 is proportional；Later
The average value of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion；It is every after obtaining conversion according to average value
The variance of the corresponding brightness value of each grayscale in group grayscale group.
Variance is the average of the quadratic sum of the difference of each data and average, and formula is as follows:
Wherein x indicates that the average of sample, n indicate the quantity of sample, xiIndicate individual, and s2Mean that variance.
Finally, using the corresponding gamma value of the smallest grayscale group of variance as compensation gamma value
The above are one embodiment that the present embodiment obtains the corresponding brightness value variance of each grayscale in each grayscale group, such as abilities
Field technique personnel are understood, are obtained the corresponding brightness value variance of each grayscale in each grayscale group and are not limited to the above method, can be not required to
The corresponding brightness value of 255 grayscale is turned to 1, but the corresponding brightness value of each grayscale directly calculates variance in each grayscale group,
It is not limited here.
S404: according to compensation gamma value, to detecting underproof display panel and subsequent display panel to be detected
It compensates；
In the present embodiment, according to the compensation gamma value of above-mentioned acquisition, original compensation gamma value is replaced, for detection
It crosses underproof display panel and subsequent display panel to be detected carries out gamma compensated operation, to improve the conjunction of display panel
Lattice rate.
S405: the reference voltage of gray scale compensation is adjusted；
In the present embodiment, by adjusting the reference voltage of gray scale compensation, it is reduced to the flashing state of display panel most
The reference voltage of low-level, the adjustment gray scale compensation is those skilled in the art's customary means, and details are not described herein again.
Above as can be seen that the present invention counts the qualification rate of display panel, when qualification rate is lower than default qualification rate, according to
The corresponding brightness value of each grayscale, finds out each ash at least one set of grayscale group in at least one set of grayscale group and grayscale group detected
The variance of rank corresponding brightness value can obtain reasonable benefit using the gamma value of the smallest grayscale group of variance as compensation gamma value
Gamma value is repaid, to detecting underproof display panel and subsequent display panel to be detected compensates.
Fig. 5-6 is please referred to, Fig. 5 is the invention shows the structural schematic diagram of one embodiment of panel gray scale compensation system, and Fig. 6 is
The invention shows the flow diagrams that panel gray scale compensation system carries out one embodiment of gray scale compensation.
In the present embodiment, system 501 includes controller 502 and sensor 503, and controller 502 connects sensor
503。
S601: starting sensor；
Sensor 503 is for obtaining detection signal, and sensor 503 can be photosensitive sensor, for obtaining detection display
The optical signal of panel, and by optical signal transmission to controller 502, controller 502 handles optical signal.
Optionally, controller judges whether display panel is qualified, if the brightness value of display panel is more than threshold range, shows
Show that panel is unqualified；If the brightness of display panel is not above threshold range, display panel is qualification.
S602: compensation gamma value has been detected whether；
In the present embodiment, controller 502 detects whether to be stored with compensation gamma value, if there is storage compensation gamma value,
It executes step S603 and thens follow the steps S604 if not storing compensation gamma value.
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: compensation gamma value and brightness value threshold range are obtained；
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 carries out gamma compensated with the compensation gamma value inputted, if controller 502 does not have input offset gal
Horse value takes 2.2 then as compensation gamma value and is inputted controller 502.
Optionally, the standard gamma value that gamma value 2.2 is proposed by the display panel production design phase,
Optionally, controller 502 detects the qualification rate of display panel, if qualification rate is lower than default qualification rate, illustrates at present
Compensation gamma value for gamma compensated no longer has reasonability, needs again one group of output reasonably to compensate gamma value, therefore
Controller 502 calls the corresponding brightness value of each grayscale in the grayscale group and grayscale group of multiple groups display panel detected, passes through
As soon as the method output group of the acquisition compensation gamma value illustrated in above-described embodiment reasonably compensates gamma value, no longer superfluous herein
It states, replaces original compensation gamma value in controller 502, gamma compensated is carried out to underproof display panel.
Optionally, it is 85% that qualification rate is preset in the present embodiment, certainly, as understood by those skilled in the art, presets and closes
Lattice rate be not limited to the present embodiment in 85%, preset qualification rate be depending on the capacity requirements of production line, preset qualification
The setting of rate need to meet the capacity requirements of different production lines, it is not limited here.
Optionally, since in actual production process, the reasons such as processing procedure drift, the gamma value of display panel can be in standard gamma
Value 2.2 floats up and down, and leading to the gamma value of display panel is more than error permissible range, and the gamma value of display panel is caused not conform to
Lattice.It in the present embodiment can be in 2.2 ± 0.2 range of established standards gamma value, to be qualified gamma value range, certainly, such as originally
Field technical staff understood, above-mentioned gamma value range be depending on display panel actual production demand, can be according to difference
Display panel set different gamma value ranges, it is not limited here.
In the present embodiment, brightness value threshold range is the corresponding light signal strength of above-mentioned gamma value range.In display surface
It is to be adjusted by gamma electric voltage to the brightness of display panel, that is, adjusted to light signal strength, therefore, this is pre- in plate
If range of luminance values is that above-mentioned gamma value is the corresponding light signal strength of 2.2 ± 0.2 ranges.
S605: whether the brightness value for detecting display panel is more than brightness value threshold range；
In the present embodiment, if the brightness value of display panel is more than brightness value threshold range, S606 is thened follow the steps, if aobvious
Show that the brightness value of panel is not above brightness value threshold range, thens follow the steps S607.
Optionally, one piece of display panel of every detection, controller 502 are shown before will record down the number of the display panel, compensation
Show panel gamma value and corresponding gray-scale intensity values.
S606: the brightness value of display panel is adjusted；
In the present embodiment, controller 502 carries out gamma compensated to display panel according to compensation gamma value, adjusts display surface
The gamma electric voltage of plate is adjusted in brightness value threshold range so that the brightness value to display panel is adjusted.
S607: the reference voltage of gray scale compensation is adjusted；
In the present embodiment, controller 502 makes the flashing state of display panel by adjusting the reference voltage of gray scale compensation
It is reduced to floor level, the reference voltage of the adjustment gray scale compensation is those skilled in the art's customary means, herein just no longer
It repeats.
S608: the brightness value and gamma value of display panel are recorded；
In the present embodiment, controller 502 records the brightness value and gamma value of display panel, is used for and controller 502
Brightness value and gamma value comparison 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 for being higher than standard gamma value 2.2, then when display panel qualification rate is lower than default qualification rate, institute through the foregoing embodiment
One group of 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 works as display if the gamma value of display panel is generally in the state lower than standard gamma value 2.2 in processing procedure at present
When panel qualification rate is lower than default qualification rate, one group of method output illustrated through the foregoing embodiment reasonably compensates gamma
Value can adjust the trend that display panel gamma value in current fabrication process is lower than standard gamma value.
In conclusion the present invention counts the qualification rate of display panel by controller, when qualification rate is lower than default qualification rate
When, the corresponding brightness value of each grayscale, finds out in at least one set of grayscale group and each grayscale group crossed according to sensor acquisition testing
The variance of each grayscale corresponding brightness value in each grayscale group is produced using the gamma value of the smallest grayscale group of variance as compensation gamma value
It reasonably compensates gamma value for one group out, subsequent display panel is compensated.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of method for obtaining gray scale compensation gamma value, which is characterized in that the described method includes:
Obtain the corresponding brightness value of each grayscale at least one set of grayscale group and each grayscale group；
According to the corresponding brightness value of grayscale each at least one set of grayscale group and each grayscale group, each grayscale is obtained
The variance of the corresponding brightness value of each grayscale in group；
Using the corresponding gamma value of the smallest grayscale group of the variance as compensation gamma value.
2. the method according to claim 1, wherein
The step of variance for obtaining the corresponding brightness value of each grayscale in each grayscale group, specifically includes:
It is that 255 corresponding brightness values turn to 1 by grayscale in every group of grayscale group, the corresponding brightness value of other grayscale in every group of grayscale group
The brightness value for being 255 according to grayscale in each group grayscale group is proportional to be scaled decimal form；Later
The average value of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion；
According to the average value, the variance of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion.
3. a kind of gray level compensation method of display panel, which is characterized in that the described method includes:
Qualification rate is preset when the display panel qualification rate detected is lower than, then obtains the ash of at least one set of display panel detected
The corresponding brightness value of each grayscale in rank group and each grayscale group；
According to the corresponding brightness value of grayscale each in the grayscale group and each grayscale group of at least one set of display panel, obtain
The variance of the corresponding brightness value of each grayscale in each grayscale group, using the corresponding gamma value of the smallest grayscale group of the variance as
Compensate gamma value；
According to the compensation gamma value, to detecting underproof display panel and subsequent display panel to be detected is mended
It repays.
4. according to the method described in claim 3, it is characterized in that, each grayscale is corresponding bright in each grayscale group of acquisition
The step of variance of angle value, specifically includes:
It is that 255 corresponding brightness values turn to 1 by grayscale in every group of grayscale group, the corresponding brightness value of other grayscale in every group of grayscale group
The brightness value for being 255 according to grayscale in each group grayscale group is proportional to be scaled decimal form；Later
The average value of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion；
According to the average value, the variance of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion.
5. according to the method described in claim 3, it is characterized in that, the method further includes steps:
Whether qualified detect display panel, if the brightness value of display panel is more than threshold range, display panel is unqualified；If
The brightness of display panel is not above threshold range, then display panel is qualification, and then obtains the display panel detected
Qualification rate.
6. according to the method described in claim 3, it is characterized in that, the method further includes steps: adjustment gray scale compensation
Reference voltage, to reduce the flashing of display panel.
7. a kind of gray scale compensation system of display panel, which is characterized in that the system comprises controller, the controller to
Realize following movement:
Qualification rate is preset when the display panel qualification rate detected is lower than, then obtains the ash of at least one set of display panel detected
The corresponding brightness value of each grayscale in rank group and each grayscale group；
According to the corresponding brightness value of grayscale each in the grayscale group and each grayscale group of at least one set of display panel, obtain
The variance of the corresponding brightness value of each grayscale in each grayscale group, using the corresponding gamma value of the smallest grayscale group of the variance as
Compensate gamma value；
According to the compensation gamma value, to detecting underproof display panel and subsequent display panel to be detected is mended
It repays.
8. system according to claim 7, which is characterized in that each grayscale is corresponding bright in each grayscale group of acquisition
The step of variance of angle value, specifically includes:
It is that 255 corresponding brightness values turn to 1 by grayscale in every group of grayscale group, the corresponding brightness value of other grayscale in every group of grayscale group
The brightness value for being 255 according to grayscale in each group grayscale group is proportional to be scaled decimal form；Later
The average value of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion；
According to the average value, the variance of the corresponding brightness value of each grayscale in every group of grayscale group after obtaining conversion.
9. system according to claim 7, which is characterized in that the controller is also used to judge whether display panel closes
Lattice, if the brightness value of display panel is more than threshold range, display panel is unqualified；If the brightness of display panel is not above
Threshold range, then display panel is qualification, and then obtains the qualification rate of the display panel detected.
10. system according to claim 7, which is characterized in that the controller is also used to adjust the reference of gray scale compensation
Voltage, to reduce the flashing of display panel.
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| CN108550345B (en) | 2018-07-12 | 2020-04-21 | 成都京东方光电科技有限公司 | Gamma correction method and device, display device, computer storage medium |
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