CN114429758B - Correction compensation method for gamma voltage of display panel, equipment and storage medium thereof - Google Patents
Correction compensation method for gamma voltage of display panel, equipment and storage medium thereof Download PDFInfo
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- CN114429758B CN114429758B CN202210057577.0A CN202210057577A CN114429758B CN 114429758 B CN114429758 B CN 114429758B CN 202210057577 A CN202210057577 A CN 202210057577A CN 114429758 B CN114429758 B CN 114429758B
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- 238000004519 manufacturing process Methods 0.000 abstract description 8
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- 239000004973 liquid crystal related substance Substances 0.000 description 3
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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Abstract
According to the correction compensation method, the correction compensation equipment and the storage medium for the gamma voltage of the display panel, the actual gamma voltage of the display panel is obtained, the first gamma voltage curve is obtained according to the actual gamma voltage of the display panel, the built-in gamma voltage curve is matched, then the display panel is driven to display through the built-in gamma voltage curve, gamma voltage adjustment data can be directly and completely written in at one time, the writing time of the gamma voltage data is reduced, the correction time of the gamma voltage is shortened, and the improvement of the productivity of a display panel production line is facilitated.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a method for correcting and compensating gamma voltages of a display panel, a device thereof, and a storage medium.
Background
The gamma voltage is an important parameter that measures the characteristics of the display screen and describes the distortion level of the output image of the display to the input image. The parameters are affected by many process parameters and materials, specifically, pretilt angle, cell thickness, liquid crystal, color resistance, etc., all affect the gamma voltage, resulting in large fluctuation of the gamma voltage. Therefore, correction of the gamma voltage is required. And as the requirements of customers are increased, the requirements of customers on the management and control of gamma voltages are more and more severe, and gamma voltage correction is a necessary technology of display screen manufacturers.
The common gamma voltage correction is to measure the brightness of the display screen by an instrument, and then change the gamma voltage of the corresponding gray scale by software control to realize the correction of the gamma voltage. However, since the data writing requires time, the data is written after each measurement, and each gray level needs to be adjusted to reach an accurate value. Such techniques are therefore time consuming, typically taking 20 seconds to 30 seconds, and can have a significant impact on the throughput of the production line.
Therefore, how to provide a method, apparatus and storage medium for correcting and compensating the gamma voltage of a display panel, which reduces the correction and compensation time of the gamma voltage of the display panel is a difficult problem that the existing panel manufacturers need to struggle with.
Disclosure of Invention
An objective of the embodiments of the present application is to provide a method for correcting and compensating gamma voltages of a display panel, a device and a storage medium thereof, which can solve the technical problem of longer gamma voltage correction and compensation time in the prior art.
The embodiment of the application provides a correction compensation method for gamma voltage of a display panel, which comprises the following steps:
acquiring gamma voltage of the display panel;
acquiring a first gamma voltage curve according to the gamma voltage;
comparing the first gamma voltage curve with a gamma voltage correction curve to obtain a second gamma voltage curve, wherein the second gamma voltage curve is the gamma voltage correction curve which is matched with the first gamma voltage curve;
and driving the display panel to display by adopting a gamma voltage compensation curve corresponding to the second gamma voltage curve.
In the method for correcting and compensating the gamma voltage of the display panel, the specific steps for obtaining the gamma voltage of the display panel include:
measuring a brightness value of the display panel;
and calculating the gamma voltage of the display panel according to the brightness value of the display panel.
In the method for correcting and compensating the gamma voltage of the display panel, the specific step of obtaining the first gamma voltage curve according to the gamma voltage includes:
acquiring a gamma voltage actual measurement curve according to the gamma voltage;
obtaining a difference value between the gamma voltage actual measurement curve and a gamma voltage standard curve;
and acquiring a first gamma voltage curve according to the difference value.
In the method for correcting and compensating the gamma voltage of the display panel, the specific step of obtaining the gamma voltage actual measurement curve according to the gamma voltage includes:
the method comprises the steps of obtaining gamma voltages corresponding to target gray scales, wherein preset gray scales are arranged between adjacent target gray scales at intervals;
and obtaining a gamma voltage actual measurement curve according to the gamma voltage linear interpolation calculation corresponding to the target gray scale.
In the method for correcting and compensating the gamma voltage of the display panel, the preset gray scale is 16 gray scales or 32 gray scale values.
In the method for correcting and compensating the gamma voltage of the display panel described in the application, before the step of measuring the gamma voltage of the display panel, the method further includes:
acquiring gamma voltage compensation curves corresponding to different gamma voltages;
calculating the difference value between the gamma voltage compensation curve and the gamma voltage standard curve;
and acquiring a gamma voltage correction curve according to the difference value, and storing the gamma voltage correction curve.
In the method for correcting and compensating the gamma voltage of the display panel, the gamma voltage correction curve is stored in the time sequence control board, and the number of the gamma voltage correction curves stored in the time sequence control board is 6-10.
In the method for correcting and compensating the gamma voltage of the display panel, the gamma voltage correction curve comprises a first gamma voltage correction curve and a second gamma voltage correction curve, wherein the gamma voltage of the first gamma voltage correction curve tends to be constant along with the increase of the gray scale, and the gamma voltage of the second gamma voltage correction curve changes linearly along with the increase of the gray scale.
The embodiment of the application also provides a correction compensation device for the gamma voltage of the display panel, which comprises:
the first acquisition module is used for acquiring gamma voltages of the display panel;
the second acquisition module is used for acquiring a first gamma voltage curve according to the gamma voltage;
the comparison module compares the first gamma voltage curve with a gamma voltage correction curve to obtain a second gamma voltage curve, wherein the second gamma voltage curve is the gamma voltage correction curve which is matched with the first gamma voltage curve;
and the driving module is used for driving the display panel to display by adopting a gamma voltage compensation curve corresponding to the second gamma voltage curve.
The embodiment of the application also provides a storage medium, wherein a program is stored in the storage medium, and the program realizes the correction compensation method of the gamma voltage of the display panel when being executed.
In the correction compensation method, the device and the storage medium for the gamma voltage of the display panel, the actual gamma voltage of the display panel is obtained, the first gamma voltage curve is obtained according to the actual gamma voltage of the display panel, the first gamma voltage curve is compared with a plurality of gamma voltage correction curves stored in advance to obtain the second gamma voltage curve, the second gamma voltage curve is the gamma voltage correction curve matched with the first gamma voltage curve, the display panel is driven to display by adopting the gamma voltage compensation curve corresponding to the second gamma voltage curve, wherein the first gamma voltage curve is directly obtained and matched with the built-in gamma voltage curve, gamma voltage adjustment data can be directly and completely written in, and the writing time of the gamma voltage data is reduced, so that the gamma voltage correction time is reduced, and the improvement of the productivity of the display panel production line is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for correcting and compensating gamma voltages of a display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a first sub-flow of a method for correcting and compensating gamma voltages of a display panel according to an embodiment of the present application.
Fig. 3 is a second sub-flowchart of a method for correcting and compensating gamma voltages of a display panel according to an embodiment of the present disclosure.
Fig. 4 is a third sub-flowchart of a method for correcting and compensating gamma voltages of a display panel according to an embodiment of the present disclosure.
Fig. 5 is a second flow chart of a method for correcting and compensating gamma voltages of a display panel according to an embodiment of the present disclosure.
Fig. 6 is a schematic diagram of a gamma voltage correction curve according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a correction compensation apparatus for gamma voltages of a display panel according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1, fig. 1 is a first flow chart of a method for correcting and compensating gamma voltages of a display panel according to an embodiment of the present application. As shown in fig. 1, the gamma voltage correction compensation method provided in the embodiment of the present application includes:
step 101, obtaining the gamma voltage of the display panel.
Step 102, a first gamma voltage curve is obtained according to the gamma voltage.
Step 103, comparing the first gamma voltage curve with a plurality of gamma voltage correction curves to obtain a second gamma voltage curve, wherein the second gamma voltage curve is a gamma voltage correction curve matched with the first gamma voltage curve.
It should be noted that, the plurality of gamma voltage correction curves are stored in the timing control board in advance between actual detection of the display panel. When the gamma voltage of the display panel is corrected and compensated, the gamma voltage correction curve is directly extracted, so that the time for correcting and compensating the gamma voltage of the display panel can be reduced, and the productivity of the display panel production line is increased.
In addition, through directly matching the gamma voltage correction curve which is matched with the first gamma voltage curve, the gamma voltage adjustment data can be directly and completely written in at a time, and the writing time of the gamma voltage data is reduced, so that the time of gamma voltage correction and compensation is reduced, and the productivity of the display panel production line is improved.
And 104, driving the display panel to display by adopting a gamma voltage compensation curve corresponding to the second gamma voltage curve.
It should be noted that the second gamma voltage curve is a gamma voltage correction curve in which the first gamma voltage curve is identical, that is, the second gamma voltage curve is a curve formed by correction voltages of gamma voltages actually detected and obtained by the display panel. Therefore, the second gamma voltage curve is adopted to drive the display panel to display, so that the gamma voltage of the display panel can be corrected and compensated, and the display uniformity of the display panel is improved.
The second gamma voltage curve is a gamma voltage correction curve which is coincident with the first gamma voltage curve, wherein 'coincident' means that the coincidence degree is the highest, specifically that the corresponding gamma voltage correction curve which is the highest coincident with the first gamma voltage curve in the plurality of gamma voltage correction curves is selected as the second gamma voltage curve.
The highest overlap ratio refers to more regions where the first gamma voltage curve and the gamma voltage correction curve are staggered, and specifically, the highest overlap ratio refers to more intersections of the first gamma voltage curve and the gamma voltage correction curve.
Referring to fig. 2, fig. 2 is a schematic diagram of a first sub-flow of a method for correcting and compensating gamma voltages of a display panel according to an embodiment of the present application. As shown in fig. 2, step 101 provided in the embodiment of the present application includes:
step 1011, measuring the brightness value of the display panel.
Step 1012, calculating the gamma voltage of the display panel according to the brightness value of the display panel.
It should be noted that, after the brightness value of the display panel is obtained through measurement, the gamma voltage of the display panel is mainly obtained according to the lookup table. In the lookup table, the brightness value of the display panel and the gamma voltage of the display panel are in one-to-one correspondence.
Referring to fig. 3, fig. 3 is a second sub-flowchart of the method for correcting and compensating the gamma voltage of the display panel according to the embodiment of the present application. As shown in fig. 3, step 102 provided in the embodiment of the present application includes:
step 1021, obtaining a gamma voltage actual measurement curve according to the gamma voltage.
Step 1022, calculate the difference between the measured gamma voltage curve and the standard gamma voltage curve.
The gamma voltage standard curve is used for displaying normally without correcting the gamma voltage when the display panel is driven by the gamma voltage standard curve, and the display uniformity is good.
Step 1023, obtaining a first gamma voltage curve according to the difference value.
Referring to fig. 4, fig. 4 is a third sub-flowchart of the method for correcting and compensating the gamma voltage of the display panel according to the embodiment of the present application, and as shown in fig. 4, the method for detecting the electrical property of the display panel according to the embodiment of the present application includes:
step 10211, obtaining gamma voltages corresponding to the target gray scales, wherein the preset gray scales are arranged between the adjacent target gray scales at intervals.
It should be noted that, in the embodiment of the present application, the gamma voltages of the display panel are acquired in a step-up manner, so that the number of acquired gamma voltages of the display panel can be reduced, which is conducive to reducing the acquisition time of the gamma voltages of the display panel, thereby reducing the correction and compensation time of the gamma voltages of the display panel, and being conducive to increasing the productivity of the display panel production line.
In one embodiment, the preset gray scale is 16 gray scales or 32 gray scales. Specifically, when the preset gray scale is 16 gray scales, the gamma voltages of 16, 32, 48, 64, 80, … …, 256 are obtained, and the gamma voltages are obtained once every 16.
The smaller the preset gray scale, the higher the accuracy of the gamma voltage correction compensation of the display panel, but relatively, the longer the time required for the gamma voltage correction compensation of the display panel; the larger the preset gray scale is, the lower the accuracy of the display panel gamma voltage correction compensation is, but in contrast, the longer the time period required for the display panel gamma voltage correction compensation is. Therefore, the specific value of the preset gray scale is determined by the specific requirement of the display panel gamma voltage correction compensation method.
Step 10212, obtaining a gamma voltage actual measurement curve according to linear interpolation calculation of the gamma voltage corresponding to the target gray scale.
It should be noted that, since the obtained gamma voltage is a plurality of points, an approximate curve of the plurality of points can be made by linear interpolation, and the approximate curve is the gamma voltage actual measurement curve. The gamma voltage actual measurement curve obtained by the linear interpolation method is smooth, has no step linearity, linearly reduces the blockiness of linear characteristics, has high spatial position accuracy, is beneficial to obtaining a gamma voltage correction curve which is more consistent with the actually obtained gamma voltage, thereby improving the accuracy of gamma voltage correction compensation of the display panel and better improving the display uniformity of the display panel.
Referring to fig. 5, fig. 5 is a second flow chart of the method for correcting and compensating the gamma voltage of the display panel according to the embodiment of the present application. As shown in fig. 5, the correction and compensation method for gamma voltages of a display panel according to the embodiment of the present application includes:
step 201, a gamma voltage compensation curve is obtained.
The compensation gamma voltage of the gamma voltage can be obtained by a jump-step mode, and then the gamma voltage compensation curve is obtained by a linear interpolation mode.
Step 202, calculate the difference between the gamma voltage compensation curve and the gamma voltage standard curve.
Step 203, obtain the gamma voltage correction curve according to the difference value, and store the gamma voltage correction curve.
The gamma voltage correction curve is stored in the timing control board.
The number of the gamma voltage correction curves stored in the time sequence control board is 6-10. The gamma voltage correction curve can be increased or decreased according to the characteristics of the display panel and the cost. When the gamma voltage of the display panel is stable and the amplitude to be adjusted is smaller, the number of the gamma voltage correction curves can be reduced; when the gamma voltage of the display panel fluctuates greatly, the amplitude of adjustment is required to be large, and then the number of gamma voltage correction curves is required to be increased.
Step 204, obtaining the gamma voltage of the display panel.
Step 205, a first gamma voltage curve is obtained according to the gamma voltage.
Step 206, comparing the first gamma voltage curve with the gamma voltage correction curve to obtain a second gamma voltage curve, wherein the second gamma voltage curve is a gamma voltage correction curve matching the first gamma voltage curve.
Step 207, driving the display panel to display by using the gamma voltage compensation curve corresponding to the second gamma voltage curve.
It should be noted that, in the embodiment provided by the application, the gamma voltage compensation curve which is matched with the gamma voltage curve formed by the actually detected gamma voltage is not directly matched, but the gamma voltage compensation curve which is displayed by the driving display panel is obtained by comparing the curve formed by the difference value of the gamma voltage standard curve and the gamma voltage curve, so that a more accurate gamma voltage compensation curve can be obtained, the accuracy of the gamma voltage correction compensation of the display panel is improved, and the display uniformity of the display panel is improved.
Referring to fig. 6, fig. 6 is a schematic diagram of a gamma voltage correction curve according to an embodiment of the present application. As shown in fig. 6, the gamma voltage correction curve provided in the embodiment of the present application includes a first gamma voltage correction curve L1 and a second gamma voltage correction curve L2, where the gamma voltage of the first gamma voltage correction curve L1 tends to a constant value along with the increase of the gray scale, the gamma voltage of the second gamma voltage correction curve L2 changes linearly along with the increase of the gray scale, the abscissa is the gray scale value, and the ordinate is the gamma voltage value.
The embodiment of the application includes four first gamma correction curves L1 and two second gamma voltage correction curves L2.
In the correction compensation method for the gamma voltage of the display panel provided by the embodiment of the application, the actual gamma voltage of the display panel is obtained, the first gamma voltage curve is obtained according to the actual gamma voltage of the display panel, the first gamma voltage curve is compared with a plurality of gamma voltage correction curves stored in advance to obtain the second gamma voltage curve, the second gamma voltage curve is the gamma voltage correction curve matched with the first gamma voltage curve, the display panel is driven to display by adopting the gamma voltage compensation curve corresponding to the second gamma voltage curve, wherein the first gamma voltage curve is directly obtained and matched with the built-in gamma voltage curve, gamma voltage adjustment data can be directly and completely written in, the writing time of the gamma voltage data is reduced, the time of gamma voltage correction is shortened, and the improvement of the productivity of the display panel production line is facilitated.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a correction compensation apparatus for gamma voltages of a display panel according to an embodiment of the present application. The correction compensation apparatus 300 for display panel gamma voltage provided in the embodiment of the present application includes a first acquisition module 301, a second acquisition module 302, a comparison module 303, and a driving module 304.
Wherein, the liquid crystal display device comprises a liquid crystal display device,
the first acquisition module 301 is configured to acquire a gamma voltage of the display panel.
The second obtaining module 302 is configured to obtain a first gamma voltage curve according to the gamma voltage.
The comparison module 303 is configured to compare the first gamma voltage curve with a plurality of gamma voltage correction curves to obtain a second gamma voltage curve, where the second gamma voltage curve is a gamma voltage correction curve that matches the first gamma voltage curve.
The driving module 304 is configured to drive the display panel to display by using a gamma voltage compensation curve corresponding to the second gamma voltage curve.
The correction compensation apparatus 300 for display panel gamma voltages provided in the embodiments of the present application is used for the correction compensation method for display panel gamma voltages described in the above embodiments. The method for correcting and compensating the gamma voltage of the display panel can be specifically referred to the above description of the method for correcting and compensating the gamma voltage of the display panel, and will not be described herein.
In the correction compensation device for the gamma voltage of the display panel provided by the embodiment of the application, the actual gamma voltage of the display panel is obtained, the first gamma voltage curve is obtained according to the actual gamma voltage of the display panel, the first gamma voltage curve is compared with a plurality of gamma voltage correction curves stored in advance to obtain the second gamma voltage curve, the second gamma voltage curve is the gamma voltage correction curve matched with the first gamma voltage curve, the display panel is driven to display by adopting the gamma voltage compensation curve corresponding to the second gamma voltage curve, wherein the first gamma voltage curve is directly obtained and matched with the built-in gamma voltage curve, gamma voltage adjustment data can be directly and completely written in, the writing time of the gamma voltage data is reduced, the time of gamma voltage correction is reduced, and the improvement of the productivity of the display panel production line is facilitated.
The embodiment of the application also provides a storage medium, and a program is stored in the storage medium, and when the program is executed, the correction compensation method of the gamma voltage of the display panel is realized. The method for correcting and compensating the gamma voltage of the display panel can be specifically referred to the above description of the method for correcting and compensating the gamma voltage of the display panel, and will not be described herein.
The foregoing describes in detail a method for correcting and compensating gamma voltages of a display panel, a device thereof and a storage medium thereof, and specific examples are applied to illustrate principles and embodiments of the present application, and the description of the foregoing examples is only for helping to understand the method and core ideas of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (8)
1. A correction compensation method for gamma voltages of a display panel, the correction compensation method comprising:
acquiring gamma voltage of the display panel;
acquiring a first gamma voltage curve according to the gamma voltage;
comparing the first gamma voltage curve with a plurality of gamma voltage correction curves to obtain a second gamma voltage curve, wherein the second gamma voltage curve is a curve formed by correction voltages of gamma voltages actually detected and obtained by a display panel, and the plurality of gamma voltage correction curves are stored in a time sequence control board in advance before the display panel is actually detected;
driving the display panel to display by adopting a gamma voltage compensation curve corresponding to the second gamma voltage curve;
the specific step of obtaining the first gamma voltage curve according to the gamma voltage comprises the following steps:
acquiring a gamma voltage actual measurement curve according to the gamma voltage;
obtaining a difference value between the gamma voltage actual measurement curve and a gamma voltage standard curve;
acquiring a first gamma voltage curve according to the difference value;
before the step of obtaining the gamma voltage of the display panel, the method further comprises:
acquiring a gamma voltage compensation curve;
calculating the difference value between the gamma voltage compensation curve and the gamma voltage standard curve;
and acquiring a gamma voltage correction curve according to the difference value, and storing the gamma voltage correction curve.
2. The method according to claim 1, wherein the step of obtaining the gamma voltage of the display panel comprises:
measuring a brightness value of the display panel;
and calculating the gamma voltage of the display panel according to the brightness value of the display panel.
3. The method of claim 1, wherein the step of obtaining a gamma voltage actual measurement curve according to the gamma voltage comprises:
the method comprises the steps of obtaining gamma voltages corresponding to target gray scales, wherein preset gray scales are arranged between adjacent target gray scales at intervals;
and obtaining a gamma voltage actual measurement curve according to the gamma voltage linear interpolation calculation corresponding to the target gray scale.
4. The gamma voltage correction compensation method of a display panel according to claim 3, wherein the preset gray scale is 16 gray scales or 32 gray scales.
5. The method according to claim 1, wherein a plurality of the gamma voltage correction curves are stored in the timing control board, and the number of the gamma voltage correction curves stored in the timing control board is 7-12.
6. The method according to claim 5, wherein the gamma voltage correction curve includes a first gamma voltage correction curve and a second gamma voltage correction curve, the gamma voltage of the first gamma voltage correction curve tends to be constant as the gray scale increases, and the gamma voltage of the second gamma voltage correction curve changes linearly as the gray scale increases.
7. A correction compensation apparatus for a gamma voltage of a display panel, comprising:
the first acquisition module is used for acquiring gamma voltages of the display panel;
the second acquisition module is used for acquiring a first gamma voltage curve according to the gamma voltage;
the comparison module is used for comparing the first gamma voltage curve with a plurality of gamma voltage correction curves to obtain a second gamma voltage curve, wherein the second gamma voltage curve is a curve formed by correction voltages of gamma voltages obtained by actual detection of the display panel, and the plurality of gamma voltage correction curves are stored in the time sequence control board in advance before the actual detection of the display panel;
the driving module is used for driving the display panel to display by adopting a gamma voltage compensation curve corresponding to the second gamma voltage curve;
the specific steps of the second acquisition module acquiring a first gamma voltage curve according to the gamma voltage include: acquiring a gamma voltage actual measurement curve according to the gamma voltage; obtaining a difference value between the gamma voltage actual measurement curve and a gamma voltage standard curve; acquiring a first gamma voltage curve according to the difference value;
the correction compensation apparatus further performs the following steps before acquiring the gamma voltage of the display panel: acquiring a gamma voltage compensation curve; calculating the difference value between the gamma voltage compensation curve and the gamma voltage standard curve; and acquiring a gamma voltage correction curve according to the difference value, and storing the gamma voltage correction curve.
8. A storage medium, wherein a program is stored in the storage medium, which when executed, implements the correction compensation method of display panel gamma voltage according to any one of claims 1 to 6.
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| CN202210057577.0A CN114429758B (en) | 2022-01-19 | 2022-01-19 | Correction compensation method for gamma voltage of display panel, equipment and storage medium thereof |
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| CN202210057577.0A CN114429758B (en) | 2022-01-19 | 2022-01-19 | Correction compensation method for gamma voltage of display panel, equipment and storage medium thereof |
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