CN111210756A - Gamma compensation method, device and equipment, and medium - Google Patents
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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
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- G—PHYSICS
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- 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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
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Abstract
A gamma compensation method, apparatus and device, medium. The gamma compensation method includes: taking one area of a display screen as a reference area, and carrying out gamma debugging on the reference area to meet a target gamma curve; and measuring one or more regions outside the reference region to obtain a first gamma curve of the region and a second gamma curve of the reference region, and determining a compensation value of the region according to the deviation of the first gamma curve and the second gamma curve so as to enable the gamma curve of the compensated region to be consistent with the second gamma curve. According to the scheme provided by the embodiment, the region outside the reference region is compensated, so that the gamma curve of the region is consistent with that of the reference curve, and the uniformity of the display screen is improved.
Description
Technical Field
Embodiments of the present disclosure relate to display technologies, and more particularly, to a gamma compensation method, apparatus, device, and medium.
Background
Large-sized screens such as (car, NB (NoteBook)), etc. because the screen size is large, IR Drop (IR Drop) may be severe, resulting in difficulty in meeting the specification of luminance uniformity or chromaticity uniformity of the screen.
Disclosure of Invention
The embodiment of the application provides a gamma compensation method, a gamma compensation device, gamma compensation equipment and a gamma compensation medium, and screen uniformity is improved.
The embodiment of the application provides a gamma compensation method, which comprises the following steps:
taking one area of a display screen as a reference area, and carrying out gamma debugging on the reference area to meet a target gamma curve;
and measuring one or more regions outside the reference region to obtain a first gamma curve of the region and a second gamma curve of the reference region, and determining a compensation value of the region according to the deviation of the first gamma curve and the second gamma curve so as to enable the gamma curve of the compensated region to be consistent with the second gamma curve.
In an exemplary embodiment, the reference region is a region including a center point of the display screen.
In an exemplary embodiment, the method further comprises, dividing the display screen into 9 regions evenly; wherein the reference region is a region including a center point of the display screen.
In an exemplary embodiment, the determining the compensation value of the region according to the deviation of the first gamma curve from the second gamma curve includes:
and converting the first gamma curve into a first linear curve, converting the second gamma curve into a second linear curve, and determining a compensation value of the region according to the deviation of the first linear curve and the second linear curve.
In an exemplary embodiment, converting the first gamma curve into a first linear curve and converting the second gamma curve into a second linear curve includes: and taking the natural logarithm of the first gamma curve to obtain the first linear curve, and taking the natural logarithm of the second gamma curve to obtain the second linear curve.
In an exemplary embodiment, the determining a compensation value for the region according to the deviation of the first linear curve and the second linear curve includes:
selecting a plurality of gray scales, determining compensation values of the gray scales in the area according to the deviation of the first linear curve and the second linear curve in the gray scales, and interpolating to obtain compensation values of the rest gray scales in the area according to the compensation values of the gray scales.
The embodiment of the application provides a gamma compensation device, including:
the gamma debugging module is arranged for carrying out gamma debugging on one region of the display screen so as to meet a target gamma curve, and the region is called a reference region;
the measurement module is used for measuring one or more regions outside the reference region to obtain a first gamma curve of the region and a second gamma curve of the reference region;
and the compensation module is arranged for determining a compensation value of the region according to the deviation of the first gamma curve and the second gamma curve, so that the gamma curve of the region is consistent with the second gamma curve after compensation.
In an exemplary embodiment, the reference region is a region including a center point of the display screen.
In an exemplary embodiment, the compensation module determines the compensation value of the region according to the deviation of the first gamma curve and the second gamma curve includes:
and converting the first gamma curve of the region into a first linear curve, converting the second gamma curve into a second linear curve, and determining a compensation value of the region according to the deviation of the first linear curve and the second linear curve.
The embodiment of the application provides a gamma compensation device, which comprises a memory and a processor, wherein the memory stores a program, and the program realizes the gamma compensation method when being read and executed by the processor.
Embodiments of the present application provide a medium, on which a computer program executable on a processor is stored, and the computer program, when executed by the processor, implements the steps of the above gamma compensation method.
Compared with the prior art, the gamma compensation method comprises the steps that one area of a display screen is used as a reference area, and gamma debugging is carried out on the reference area so as to meet a target gamma curve; and measuring one or more regions outside the reference region to obtain a first gamma curve of the region and a second gamma curve of the reference region, and determining a compensation value of the region according to the deviation of the first gamma curve and the second gamma curve so as to enable the gamma curve of the compensated region to be consistent with the second gamma curve. According to the scheme provided by the embodiment, the region outside the reference region is compensated, so that the gamma curve of the region is consistent with that of the reference curve, and the uniformity of the display screen is improved. In addition, compared with a scheme of performing gamma debugging on each region, the method and the device have the advantages that the gamma curve is compensated, and the method and the device are more convenient to realize.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
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The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a flowchart of a gamma compensation method according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a display screen division according to an embodiment of the present application;
FIG. 3 is a flow chart of a gamma compensation method according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a display screen segmentation provided in an embodiment of the present application;
FIG. 5 is a schematic view of a gamma curve according to an embodiment of the present application;
FIG. 6 is a diagram illustrating a linearized gamma curve according to an embodiment of the present application;
FIG. 7 is a block diagram of a gamma compensation apparatus according to an embodiment of the present application;
FIG. 8 is a block diagram of a gamma compensation apparatus according to an embodiment of the present application;
fig. 9 is a block diagram of media provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
When Gamma tuning is performed on a large-sized screen based on a center point, the center point satisfies a target Gamma curve (for example, Gamma2.2 curve), because the size is large and brightness uniformity is problematic, the position around the center point is not a Gamma2.2 curve that satisfies the standard. Therefore, improvements are needed.
In the embodiment of the application, after gamma debugging is carried out on the reference region, compensation is carried out on the rest regions, so that the uniformity of the screen is improved.
As shown in fig. 1, an embodiment of the present application provides a gamma compensation method, including:
According to the scheme provided by the embodiment, the region outside the reference region is compensated, so that the gamma curve of the region is consistent with that of the reference region, and the uniformity of the display screen is improved. In addition, compared with a scheme of performing gamma debugging on each region, the method and the device have the advantages that the gamma curve is compensated, and the method and the device are more convenient to realize.
In an exemplary embodiment, the reference region is a region including a center point of the display screen. In other embodiments, the reference region may also be a region that does not contain a center point.
In an exemplary embodiment, the display screen is evenly divided into 9 regions; wherein the reference region is a region including a center point of the display screen. As shown in fig. 2, the display screen is divided into 9 areas, and the area a is taken as a reference area. In other embodiments, the division into more or less regions may be performed, and the size of each region may be different, and the division may be performed as needed.
The target gamma curve includes an R (red) component gamma curve, a G (green) component gamma curve, and a B (blue) component gamma curve. In the embodiment of the present application, only the target gamma curve is generally called, and when the gamma debugging is performed, the gamma curve needs to be debugged respectively.
In an exemplary embodiment, in the step 101, performing gamma debugging on the reference region to satisfy a target gamma curve includes: according to a target brightness value corresponding to a binding point gray scale on a target gamma curve, adjusting a control voltage to enable the brightness value of the central point of the reference region at the binding point gray scale to reach the target brightness value, and recording corresponding control voltages, namely gamma voltages (recorded by a gamma register) including an R component gamma voltage, a G component gamma voltage and a B component gamma voltage. After the gamma voltages of the binding gray scales are obtained, the gamma voltages of other binding gray scales are obtained through interpolation, and gamma debugging is completed. The target gamma curve may correspond to a specific gamma value, and may be, for example, 2, 2.1, 2.2, 2.3, 3, etc., which is not limited in this application. When the gamma value is 2.2, the human eye recognizes that the progression of each gray-scale luminance is equidistant, and thus, in an exemplary embodiment, the gamma value of the target gamma curve may be 2.2, i.e., the target gamma curve includes an R component 2.2 gamma curve, a G component 2.2 gamma curve, and a B component 2.2 gamma curve. It should be noted that the above gamma debugging method is only an example, and other gamma debugging methods may be used as needed.
The display screen is divided into a plurality of regions, each region can be compensated for the region of the reference region, and partial regions can also be compensated, for example, the gamma curve of each region is measured and compared with the gamma curve of the reference region, compensation is performed when a preset condition is met (for example, the deviation reaches a preset degree), and compensation is not performed if the deviation is smaller. Of course, the compensation operation in step 102 may be performed without making a determination.
In step 102, the method for measuring the gamma curve includes measuring the brightness value at each gray level to obtain the gamma curve representing the relationship between the brightness value and the gray level.
In another embodiment, the second gamma curve may also directly use the target gamma curve.
In an exemplary embodiment, the determining the compensation value of the region according to the deviation of the first gamma curve from the second gamma curve includes:
and converting the first gamma curve of the region into a first linear curve, converting the second gamma curve into a second linear curve, and determining a compensation value of the region according to the deviation of the first linear curve and the second linear curve. In other embodiments, the compensation can be performed directly according to the deviation between the first gamma curve and the second gamma curve without conversion. Wherein the compensation value is a compensation value for the gamma voltage.
In an exemplary embodiment, converting the first gamma curve into a first linear curve and converting the second gamma curve into a second linear curve includes: and taking the natural logarithm of the first gamma curve to obtain the first linear curve, and taking the natural logarithm of the second gamma curve to obtain the second linear curve.
The first gamma curve and the second gamma curve are in the relation of brightness lv and gray scale GrayN-; the first gamma curve satisfies lv ═ maximum brightness [ (GrayN-0)/(255-0) ] ^ a1, and a1 is the gamma value of the first gamma curve; the second gamma curve satisfies lv ═ maximum brightness [ (GrayN-0)/(255-0) ] ^ a2, and a2 is the gamma value of the second gamma curve;
the first linear curve is obtained by taking the natural logarithm of the first gamma curve, and the first linear curve is obtained by taking Y ═ ln (lv) ^ ln (maximum brightness [ (GrayN-0)/(255-0) ] ^ a1), taking ln (lv) as the vertical axis and ln (GrayN) as the horizontal axis. The second linear curve is similar and will not be described in detail. In other embodiments, other ways of linearization may be used, and the present application is not limited thereto.
Wherein, calculating the deviation means: and calculating the Y value difference of the first linear curve and the second linear curve at the same gray scale, and obtaining a compensation value according to the Y value difference, so that the brightness value of the compensated area at the same gray scale is consistent with the brightness value of the reference area (namely the gamma curve is consistent), and the brightness uniformity of the display screen is improved. If all the regions are compensated, the brightness uniformity of the entire display screen is improved. The compensation value may be recorded in a register, at which time the region applies a different gamma voltage from the reference region.
In an exemplary embodiment, the determining a compensation value for the region according to the deviation of the first linear curve and the second linear curve includes:
selecting a plurality of gray scales, determining compensation values of the gray scales in the area according to the deviation of the first linear curve and the second linear curve in the gray scales, and interpolating to obtain compensation values of the rest gray scales in the area according to the compensation values of the gray scales. That is, the calculation deviation of the plurality of gray scales can be selected and compensated, and the compensation values of the other gray scales are obtained by interpolating the compensation values of the plurality of gray scales, thereby reducing the calculation amount. The gray levels are, for example, 10, 15, 20, etc., and can be set as desired. In other embodiments, the deviations of other gray scales may be obtained by interpolation of the deviations of the plurality of gray scales, and then the compensation value may be determined according to the deviations. The deviation is related to brightness and the brightness is related to the gamma voltage, and thus, a compensation value of the gamma voltage can be determined according to the deviation.
The application is illustrated by an example below.
In this embodiment, the large-size screen is divided into 9 blocks (regions), the central region is used as a reference region, Gamma tuning is performed to satisfy the Gamma2.2 curve, the Gamma curves of the remaining 8 regions are measured at the same time, the Gamma curve of the region is obtained and compared with the Gamma2.2 curve, and the Gamma curve is degammated to obtain a linear curve. In the linear interval, 10 gray levels are selected as references to perform adjustment calculation and compensation, and offset values are calculated to perform compensation. Finally, the linear curve is changed back to the Gamma curve. The remaining areas are compensated in the same way, thus achieving the overall pull back of the large screen to the 2.2 curve.
As shown in fig. 3, includes:
As shown in fig. 4, the gamma curve of 9 regions, the center region, has a gamma value of 2.2.
And step 302, measuring Gamma curves of other blocks to obtain the Gamma curves of the other 8 blocks.
The Gamma values of the Gamma curves of the 8 regions are respectively 2.3,2.1,2.1,2.4,2.4,2.1,2.0 and 2.3, as shown in fig. 4, it can be seen that there is a deviation between the regions, so that under the same gray scale, the brightness is not uniform and the uniformity is not good.
And step 303, compensating the 8 regions according to the deviation between the Gamma curves of the 8 regions and the Gamma curve of the reference region, so that the Gamma curves of the 8 regions after compensation are consistent with the Gamma curve of the reference region.
This is illustrated by way of example with one of the blocks (region B in fig. 4) being compensated.
As shown in fig. 5, the Gamma curve measured in the region B has a Gamma value of 2.0 (solid line in fig. 5) and is deviated from the Gamma curve 2.2 (dotted line in fig. 5) in the central region. 10 gray levels, namely 10 points in the curve are selected for calculation compensation. It should be noted that the selection of the 10 points is variable, and the number of the points is also changed according to the actual state, and more points or less points can be selected according to the actual situation of the display screen at the time.
The Gamma curve is degammated and the Gamma curve of the exponential function is linearized as shown in fig. 6.
The Gamma curve satisfies the formula: lv ═ maximum brightness [ (GrayN-0)/(255-0) ] ^ a
Taking logarithm from both ends of the above formula (taking natural logarithm in this embodiment) to obtain a curve without Gamma: ln (Lv) ═ ln { maximum luminance ^ a [ (GrayN-0)/(255-0) ], al } ((GrayN)) + K, where Lv is the luminance value, GrayN is the gray scale value, a is the Gamma value of the Gamma curve, K is a known value related to the maximum luminance, and the maximum luminance is the maximum luminance corresponding to the Gamma curve.
As shown in fig. 6, two linear curves, DeGamma ═ 2.2 (obtained by linearizing the Gamma curve in the central region a) and DeGamma ═ 2.0 (obtained by linearizing the Gamma curve in the region B) were obtained. The horizontal axis of the linear curve is the natural logarithm of the gray-scale value, and the vertical axis is the natural logarithm of the brightness.
Deviation calculation is carried out through a linear curve, 10 registers O1[7:0] -O10 [7:0] are arranged in each block in an IC (Integrated Circuit) or a T-CON (Timing Controller) of a large-size screen, each register has 8 bits (bit), each register corresponds to a gray scale, a offset value is calculated by comparing the difference value of Y values of the linear curve of the area B and the linear curve of the area A at the same gray scale, a compensation value of the gray scale is calculated according to the offset value, and the compensation value is recorded in the corresponding register. The Y value is related to brightness, and the brightness is related to Gamma voltage, so that the compensation value of the Gamma voltage can be calculated according to the difference value of the Y value. And the other gray scales are compensated in a linear interpolation mode.
Finally, the linear function after compensation is changed back to the Gamma curve, and therefore the Gamma curves of all blocks are finally pulled back to the target curve.
In the embodiment, the uniformity of the display screen is improved by dividing the large-size screen into a plurality of areas, performing Gamma debugging by taking one area as a reference area, and performing Gamma compensation in the rest areas.
As shown in fig. 7, an embodiment of the present application provides a gamma compensation apparatus, including:
a gamma debugging module 701 configured to perform gamma debugging on a region of the display screen to satisfy a target gamma curve, where the region is referred to as a reference region;
a measuring module 702 configured to measure a first gamma curve of the region and a second gamma curve of the reference region for one or more regions outside the reference region;
the compensation module 703 is configured to determine a compensation value of the region according to a deviation between the first gamma curve and the second gamma curve, so that the compensated gamma curve of the region is consistent with the second gamma curve.
In an exemplary embodiment, the reference region is a region including a center point of the display screen.
In an exemplary embodiment, the compensation module 703 determines the compensation value of the region according to the deviation of the first gamma curve and the second gamma curve includes:
and converting the first gamma curve of the region into a first linear curve, converting the second gamma curve into a second linear curve, and determining a compensation value of the region according to the deviation of the first linear curve and the second linear curve.
As shown in fig. 8, an embodiment of the present application provides a gamma compensation device 80, which includes a memory 810 and a processor 820, where the memory 810 stores a program, and when the program is read and executed by the processor 820, the program implements the gamma compensation method.
As shown in fig. 9, an embodiment of the present application provides a medium 90, on which a computer program 910 that can run on a processor is stored, and when executed by the processor, the computer program 910 implements the steps of the above gamma compensation method.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. A gamma compensation method, comprising:
taking one area of a display screen as a reference area, and carrying out gamma debugging on the reference area to meet a target gamma curve;
and measuring one or more regions outside the reference region to obtain a first gamma curve of the region and a second gamma curve of the reference region, and determining a compensation value of the region according to the deviation of the first gamma curve and the second gamma curve so as to enable the gamma curve of the compensated region to be consistent with the second gamma curve.
2. The gamma compensation method of claim 1, wherein the reference region is a region including a center point of the display screen.
3. The gamma compensation method of claim 1, further comprising, dividing the display screen into 9 regions uniformly; wherein the reference region is a region including a center point of the display screen.
4. A gamma compensation method as claimed in any one of claims 1 to 3, wherein determining the compensation value for the region based on the deviation of the first gamma curve from the second gamma curve comprises:
and converting the first gamma curve into a first linear curve, converting the second gamma curve into a second linear curve, and determining a compensation value of the region according to the deviation of the first linear curve and the second linear curve.
5. The gamma compensation method of claim 4, wherein converting the first gamma curve to a first linear curve and converting the second gamma curve to a second linear curve comprises: and taking the natural logarithm of the first gamma curve to obtain the first linear curve, and taking the natural logarithm of the second gamma curve to obtain the second linear curve.
6. The gamma compensation method of claim 4, wherein determining the compensation value for the region based on the deviation of the first and second linear curves comprises:
selecting a plurality of gray scales, determining compensation values of the gray scales in the area according to the deviation of the first linear curve and the second linear curve in the gray scales, and interpolating to obtain compensation values of the rest gray scales in the area according to the compensation values of the gray scales.
7. A gamma compensation apparatus, comprising:
the gamma debugging module is arranged for carrying out gamma debugging on one region of the display screen so as to meet a target gamma curve, and the region is called a reference region;
the measurement module is used for measuring one or more regions outside the reference region to obtain a first gamma curve of the region and a second gamma curve of the reference region;
and the compensation module is arranged for determining a compensation value of the region according to the deviation of the first gamma curve and the second gamma curve, so that the gamma curve of the region is consistent with the second gamma curve after compensation.
8. The gamma compensation apparatus of claim 7, wherein the reference region is a region including a center point of the display screen.
9. The gamma compensation apparatus of claim 7 or 8, wherein the compensation module determines the compensation value of the region according to the deviation of the first gamma curve from the second gamma curve, comprising:
and converting the first gamma curve into a first linear curve, converting the second gamma curve into a second linear curve, and determining a compensation value of the region according to the deviation of the first linear curve and the second linear curve.
10. A gamma compensation device comprising a memory and a processor, the memory storing a program which, when read and executed by the processor, implements the gamma compensation method of any one of claims 1 to 6.
11. A medium on which a computer program is stored which is executable on a processor, the computer program, when being executed by the processor, realizing the steps of the gamma compensation method as claimed in any one of claims 1 to 6.
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| CN111624814A (en) * | 2020-06-15 | 2020-09-04 | 武汉华星光电技术有限公司 | Display device and display optimization method |
| CN111901543A (en) * | 2020-08-05 | 2020-11-06 | 四川长虹电器股份有限公司 | Method for improving uniformity of liquid crystal display television |
| CN111968583A (en) * | 2020-07-23 | 2020-11-20 | 昆山国显光电有限公司 | Display panel brightness compensation control method and brightness compensation control system |
| US11067853B1 (en) | 2020-06-15 | 2021-07-20 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display device and display optimization method |
| CN113299216A (en) * | 2021-05-28 | 2021-08-24 | 昆山国显光电有限公司 | Gamma debugging method, device, equipment and storage medium |
| CN113889036A (en) * | 2021-10-13 | 2022-01-04 | 合肥维信诺科技有限公司 | Method for determining compensation gray scale value, compensation method, compensation device, compensation equipment and compensation medium |
| WO2022205521A1 (en) * | 2021-03-31 | 2022-10-06 | Tcl华星光电技术有限公司 | Display panel grayscale compensation method, grayscale compensation apparatus, and grayscale compensation system |
| CN115188304A (en) * | 2022-09-07 | 2022-10-14 | 苏州佳智彩光电科技有限公司 | LCD and OLED screen defect detection and repair method and device |
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