CN116631313B - Color correction method and system for liquid crystal display panel - Google Patents
Color correction method and system for liquid crystal display panel Download PDFInfo
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- CN116631313B CN116631313B CN202310916908.6A CN202310916908A CN116631313B CN 116631313 B CN116631313 B CN 116631313B CN 202310916908 A CN202310916908 A CN 202310916908A CN 116631313 B CN116631313 B CN 116631313B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 90
- 238000012937 correction Methods 0.000 title claims abstract description 40
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 19
- 238000003702 image correction Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003086 colorant Substances 0.000 description 4
- 238000012360 testing method Methods 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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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
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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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
- G09G2320/0693—Calibration of display systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The application relates to the technical field of liquid crystal panels, in particular to a color correction method and a color correction system of a liquid crystal panel, wherein a highest brightness standard color image and a medium brightness standard color image are set; then calibrating the highest brightness standard color of the panel to be tested, and calibrating the medium brightness standard color of the panel to be tested; setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the driving power supply voltage according to specific color level requirements; the adjusted information is input into the driving power supply chip, so that the color correction of the liquid crystal panel is completed, and the subsequent working procedure is carried out.
Description
Technical Field
The application relates to the technical field of liquid crystal panels, in particular to a color correction method and a color correction system for a liquid crystal panel.
Background
The rise of the liquid crystal panel industry drives the sudden increase of panel quality inspection requirements. The liquid crystal panel is a material for determining the brightness, contrast, color and visual angle of the liquid crystal display, the liquid crystal panel is regulated and displayed in different colors and luminous brightness through three R.G.B (red, green and blue) color channels, the liquid crystal panels produced by different liquid crystal panel manufacturers at present have different colors displayed by the liquid crystal panels of different manufacturers due to different production processes, factors of raw materials and the like, when different liquid crystal panels display the same picture, color difference can occur, and when the liquid crystal panels produced by different liquid crystal panel manufacturers are purchased by other manufacturers and used for the same product, the consistency of the product can be poor due to the color difference.
Disclosure of Invention
Aiming at the defects existing in the prior art, the application aims to provide a color correction method and a color correction system for a liquid crystal panel, which ensure that all liquid crystal panels can display the same color in an error rate by color comparison and adjustment of a driving circuit.
In order to achieve the above purpose, the present application provides the following technical solutions: a color correction method of a liquid crystal panel comprises the following steps:
(1) Setting an initial color image: setting a highest brightness standard color image and a medium brightness standard color image;
(2) The standard color calibration of the highest brightness of the panel to be tested: adjusting a driving power supply to the highest working voltage to drive the panel to be tested to display, and then shooting a panel display color image of the color and the brightness of the panel in the current state;
(3) Comparing and analyzing the highest brightness standard color image with the panel display color image shot in the step (2), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the display color image of the panel to be tested and the highest brightness standard color image are adjusted to be within an allowable error, and recording the current voltage reading V 1 ；
(4) Regulating the driving power supply to V 1 Half of the voltage drives the power supply to drive the panel to display, and then the panel display color image of the color brightness of the panel in the current state is shot;
(5) Comparing and analyzing the medium brightness standard color image with the panel display color image shot in the step (4), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the display color image of the panel to be tested and the medium brightness standard color image are adjusted to be within an allowable error, and recording the current voltage reading V 2 ；
(6) Setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the driving power supply voltage according to specific color level requirements;
(7) The adjusted information is input into a driving power supply chip, so that the color correction of the liquid crystal panel is completed, and the subsequent working procedure is carried out.
In some of these embodiments, according to step (1), the initial color image comprises
Red, green and blue images of the highest brightness standard color;
a red image, a green image and a blue image of a medium brightness standard color.
In some embodiments, according to steps (2) - (6), the color correction of the panel to be tested is based on the principle of red, green and blue, and then the red image correction is performed, and finally the blue image correction is performed.
In some of these embodiments, the actual test mode is:
(1) adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a red image, and then shooting a panel display color image of the red color brightness of the panel in the current state;
(2) comparing and analyzing the red image with the highest standard brightness color with the panel display color image shot in the step (1), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the red image with the highest standard brightness color is adjusted to be within an allowable error, and recording the current voltage reading V R1 ；
(3) Regulating the driving power supply to V R1 Half of the voltage drives the power supply to drive the panel to display, and then the panel display color image of the red image color brightness of the panel in the current state is shot;
(4) comparing and analyzing the red image with the standard color with medium brightness with the panel display color image shot in the step (3), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the red image with the standard color with medium brightness is adjusted to be within an allowable error, and recording the current voltage reading V R2 ；
(5) Setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on panel red image display driving power supply voltage according to specific color level requirements;
(6) adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a green image, and then shooting a panel display color image of the green color brightness of the panel in the current state;
(7) comparing the green image with the highest brightness standard color with the panel display color image shot in the step (6), outputting a comparison result, and adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the green image with the highest brightness standard color is adjusted to the panel display color image to be testedAfter the image is within the allowable error, the current voltage reading V is recorded G1 ；
(8) Regulating the driving power supply to V G1 Half of the voltage drives the power supply to drive the panel to display, and then the panel with the color brightness of the green image of the panel in the current state is shot to display a color image;
(9) comparing and analyzing the green image with the standard color with medium brightness with the panel display color image shot in the step (8), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the condition that the display color image of the panel to be tested and the green image with the standard color with medium brightness are within the allowable error is adjusted, and recording the current voltage reading V G2 ；
Setting graded color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the panel green image display driving power supply voltage according to specific color level requirements;
adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a blue image, and then shooting a panel display color image of the blue color brightness of the panel in the current state;
by combining the blue image of the highest brightness standard color with step +.>The shot panel display color image is compared and analyzed, a comparison result is output, the driving power supply voltage of the panel to be tested is regulated according to the comparison result until the display color image of the panel to be tested and the blue image of the highest brightness standard color are regulated within an allowable error, and the current voltage reading V is recorded B1 ；
Regulating the drive power toV B1 Half of the voltage drives the power supply to drive the panel to display, and then the panel with the color brightness of the blue image of the panel in the current state is shot to display a color image;
by combining a blue image of a medium brightness standard color with step +.>The shot panel display color image is compared and analyzed, a comparison result is output, the driving power supply voltage of the panel to be tested is regulated according to the comparison result until the display color image of the panel to be tested and the blue image of the medium brightness standard color are regulated within the allowable error, and the current voltage reading V is recorded B2 ；
Setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the panel blue image display driving power supply voltage according to specific color level requirements;
in some embodiments, the gradation level is set to 256 levels, and the gradation is adjusted to 128 levels according to half of the gradation, and a specific gradation driving power voltage is obtained according to the adjusted driving power voltage, that is
V Step drive supply voltage ＝(V 1 -V 2 )/128。
In some embodiments, the red, green and blue three-color classification V of the panel to be tested is obtained according to the classification driving power supply voltage formula R-stage drive supply voltage 、V G step drive supply voltage And V B stage drive supply voltage 。
In some embodiments, a driving power supply driving signal is set based on the obtained hierarchical driving power supply voltage, the driving power supply of the panel to be tested is corrected, meanwhile, corrected data are stored in a server, a readable two-dimension code label is generated, and the label is attached to the liquid crystal panel after current correction for processing and use in subsequent procedures.
In order to achieve the above purpose, the present application further provides the following technical solutions: a system for realizing a color correction method based on a liquid crystal panel, which comprises a processing server, a high-definition camera, an adjustable driving power supply and a two-dimension code generating module,
the processing server is used for storing a red image, a green image and a blue image of the highest brightness standard color; the method comprises the steps of storing a red image, a green image and a blue image of a medium-brightness standard color, and storing a display color image of a tested liquid crystal panel shot by a high-definition camera and analyzing the display color image and the standard color image;
the high-definition camera is used for shooting and recording the color image displayed by the tested liquid crystal panel and transmitting the color image to the processing server;
the adjustable driving power supply is used for connecting the power supply driving end of the tested liquid crystal panel, and the color and brightness of the tested liquid crystal panel are driven to be displayed through the adjustment of the power supply voltage;
the two-dimensional code generation module is used for generating readable two-dimensional codes for the corrected liquid crystal display panel correction information and linking the two-dimensional codes with the information of the liquid crystal display panel currently tested in the processing server.
In some embodiments, the processing server is a high-performance industrial personal computer, the high-definition camera is a high-frequency acquisition camera, the adjustable driving power supply is a computer-controlled constant-current voltage-regulating driver, and the two-dimension code generating module comprises a two-dimension code generating unit embedded in the industrial personal computer and a two-dimension code label printer connected with the industrial personal computer.
In some embodiments, the high-frequency acquisition camera, the computer-controlled constant-current voltage-regulating driver and the two-dimensional code label printer are respectively in communication connection with the high-performance industrial personal computer, the high-frequency acquisition camera is positioned right above the color detection station of the liquid crystal panel, the tested liquid crystal panel is arranged right below the high-frequency acquisition camera, the power output end of the computer-controlled constant-current voltage-regulating driver is connected with the power end of the tested liquid crystal panel, the red, green and blue display of the tested liquid crystal panel is regulated, and then the brightness of the liquid crystal panel in the current state is respectively regulated through the industrial personal computer, so that the high-frequency acquisition camera captures the brightness of the liquid crystal panel in the current state and compares with a standard color image in the industrial personal computer until the brightness is consistent with the standard color image, the regulation of the driving power voltage is stopped, and then the current reading voltage is stored.
Compared with the prior art, the application has the beneficial effects that: color image adjustment and comparison are performed through the panels with three colors and independent color brightness, so that test data of each liquid crystal panel are obtained, and targeted adjustment is performed, so that color consistency of all liquid crystal panels within an error allowable range is ensured, and product consistency and color stability of the liquid crystal panels are ensured;
through the setting of correction system, can realize automatic liquid crystal display panel correction, improve correction efficiency, and reduced the manual correction error rate, further improve production efficiency, reduction in production cost.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the application, and to provide a thorough description and understanding of the application in terms of the embodiments of the application.
Drawings
FIG. 1 is a calibration flow chart of the present application;
fig. 2 is a system schematic block diagram of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, the present application provides a technical solution: a color correction method of a liquid crystal panel comprises the following steps:
(1) Setting an initial color image: setting a highest brightness standard color image and a medium brightness standard color image;
(2) The standard color calibration of the highest brightness of the panel to be tested: adjusting a driving power supply to the highest working voltage to drive the panel to be tested to display, and then shooting a panel display color image of the color and the brightness of the panel in the current state;
(3) Comparing and analyzing the highest brightness standard color image with the panel display color image shot in the step (2), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the display color image of the panel to be tested and the highest brightness standard color image are adjusted to be within an allowable error, and recording the current voltage reading V 1 ；
(4) Regulating the driving power supply to V 1 Half of the voltage drives the power supply to drive the panel to display, and then the panel display color image of the color brightness of the panel in the current state is shot;
(5) Comparing and analyzing the medium brightness standard color image with the panel display color image shot in the step (4), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the display color image of the panel to be tested and the medium brightness standard color image are adjusted to be within an allowable error, and recording the current voltage reading V 2 ；
(6) Setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the driving power supply voltage according to specific color level requirements;
(7) The adjusted information is input into a driving power supply chip, so that the color correction of the liquid crystal panel is completed, and the subsequent working procedure is carried out.
According to step (1), the initial color image comprises
Red, green and blue images of the highest brightness standard color;
a red image, a green image and a blue image of a medium brightness standard color.
According to the steps (2) - (6), the color correction of the panel to be tested is based on the principle of red, green and blue, and then the red image correction is performed, and finally the blue image correction is performed.
The actual test mode is as follows:
(1) adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a red image, and then shooting a panel display color image of the red color brightness of the panel in the current state;
(2) comparing and analyzing the red image with the highest standard brightness color with the panel display color image shot in the step (1), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the red image with the highest standard brightness color is adjusted to be within an allowable error, and recording the current voltage reading V R1 ；
(3) Regulating the driving power supply to V R1 Half of the voltage drives the power supply to drive the panel to display, and then the panel display color image of the red image color brightness of the panel in the current state is shot;
(4) comparing and analyzing the red image with the standard color with medium brightness with the panel display color image shot in the step (3), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the red image with the standard color with medium brightness is adjusted to be within an allowable error, and recording the current voltage reading V R2 ；
(5) Setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on panel red image display driving power supply voltage according to specific color level requirements;
(6) adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a green image, and then shooting a panel display color image of the green color brightness of the panel in the current state;
(7) comparing the green image with the highest standard brightness color with the panel display color image shot in the step (6), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the display color image of the panel to be tested and the green image with the highest standard brightness color are adjusted to be within an allowable error, and recording the current voltage reading V G1 ；
(8) Regulating the driving power supply to V G1 Half of the voltage, the driving power drives the panel displayThen shooting a panel display color image of the green image color brightness of the current state panel;
(9) comparing and analyzing the green image with the standard color with medium brightness with the panel display color image shot in the step (8), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the condition that the display color image of the panel to be tested and the green image with the standard color with medium brightness are within the allowable error is adjusted, and recording the current voltage reading V G2 ；
Setting graded color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the panel green image display driving power supply voltage according to specific color level requirements;
adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a blue image, and then shooting a panel display color image of the blue color brightness of the panel in the current state;
by combining the blue image of the highest brightness standard color with step +.>The shot panel display color image is compared and analyzed, a comparison result is output, the driving power supply voltage of the panel to be tested is regulated according to the comparison result until the display color image of the panel to be tested and the blue image of the highest brightness standard color are regulated within an allowable error, and the current voltage reading V is recorded B1 ；
Regulating the driving power supply to V B1 Half of the voltage drives the power supply to drive the panel to display, and then the panel with the color brightness of the blue image of the panel in the current state is shot to display a color image;
by combining a blue image of a medium brightness standard color with step +.>The shot panel display color image is compared and analyzed, a comparison result is output, the driving power supply voltage of the panel to be tested is regulated according to the comparison result until the display color image of the panel to be tested and the blue image of the medium brightness standard color are regulated within the allowable error, and the current voltage reading V is recorded B2 ；
Setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the panel blue image display driving power supply voltage according to specific color level requirements;
setting the gradation level to 256 levels, adjusting the gradation level to 128 levels according to half of the gradation level, and obtaining a specific gradation driving power voltage according to the adjusted driving power voltage, namely
V Step drive supply voltage ＝(V 1 -V 2 )/128。
Obtaining red, green and blue three-color classification V of the panel to be tested according to the classification driving power supply voltage formula R-stage drive supply voltage 、V G step drive supply voltage And V B stage drive supply voltage 。
Setting a driving power supply driving signal based on the obtained grading driving power supply voltage, correcting a driving power supply of a panel to be detected, storing corrected data to a server, generating a readable two-dimension code label, and attaching the label to a liquid crystal panel after current correction for processing and using in subsequent procedures.
At 0-V when grading according to voltage 1 The voltage is graded to obtain 256 graded driving power supply voltages, and then the 256 graded driving power supply voltages are respectively input into a driving power supply program according to specific red, green and blue three colors, namelyAnd obtaining a liquid crystal panel driving power supply corresponding to the corrected color for subsequent liquid crystal panel driving adjustment.
Referring to fig. 2, a system for implementing a color correction method based on a liquid crystal panel includes a processing server, a high-definition camera, an adjustable driving power supply and a two-dimension code generating module,
the processing server is used for storing a red image, a green image and a blue image of the highest brightness standard color; the method comprises the steps of storing a red image, a green image and a blue image of a medium-brightness standard color, and storing a display color image of a tested liquid crystal panel shot by a high-definition camera and analyzing the display color image and the standard color image;
the high-definition camera is used for shooting and recording the color image displayed by the tested liquid crystal panel and transmitting the color image to the processing server;
the adjustable driving power supply is used for connecting the power supply driving end of the tested liquid crystal panel, and the color and brightness of the tested liquid crystal panel are driven to be displayed through the adjustment of the power supply voltage;
the two-dimensional code generation module is used for generating readable two-dimensional codes for the corrected liquid crystal display panel correction information and linking the two-dimensional codes with the information of the liquid crystal display panel currently tested in the processing server.
The processing server is a high-performance industrial personal computer, the high-definition camera is a high-frequency acquisition camera, the adjustable driving power supply is a computer-controlled constant-current voltage-regulating driver, and the two-dimensional code generating module comprises a two-dimensional code generating unit embedded in the industrial personal computer and a two-dimensional code label printer connected with the industrial personal computer.
The high-frequency acquisition camera, the computer-controlled constant-current voltage regulation driver and the two-dimensional code label printer are respectively in communication connection with the high-performance industrial personal computer, the high-frequency acquisition camera is positioned right above the color detection station of the liquid crystal panel, the tested liquid crystal panel is arranged right below the high-frequency acquisition camera, the power output end of the computer-controlled constant-current voltage regulation driver is connected with the power end of the tested liquid crystal panel, the red, green and blue display of the tested liquid crystal panel is regulated, and then the single-color brightness driving power voltage is regulated respectively through the industrial personal computer, so that the high-frequency acquisition camera can capture the brightness displayed by the liquid crystal panel in the current state and compare with the standard color image in the industrial personal computer until the comparison is consistent, the driving power voltage regulation is stopped, and then the current reading voltage is stored.
Through this technical scheme, can realize automatic liquid crystal display panel correction, improve correction efficiency, and reduced artifical correction error rate, further improve production efficiency, reduction in production cost.
The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A color correction method of a liquid crystal panel is characterized in that: the method comprises the following steps:
(1) Setting an initial color image: setting a highest brightness standard color image and a medium brightness standard color image;
(2) The standard color calibration of the highest brightness of the panel to be tested: adjusting a driving power supply to the highest working voltage to drive the panel to be tested to display, and then shooting a panel display color image of the color and the brightness of the panel in the current state;
(3) Comparing and analyzing the highest brightness standard color image with the panel display color image shot in the step (2), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the display color image of the panel to be tested and the highest brightness standard color image are adjusted to be within an allowable error, and recording the current voltage reading V 1 ；
(4) Regulating the driving power supply to V 1 Half of the voltage drives the power supply to drive the panel to display, and then the panel display color image of the color brightness of the panel in the current state is shot;
(5) Comparing and analyzing the medium brightness standard color image with the panel display color image shot in the step (4), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the display color image of the panel to be tested and the medium brightness standard color image are adjusted to be within an allowable error, and recording the current voltage reading V 2 ；
(6) Setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the driving power supply voltage according to specific color level requirements;
(7) Inputting the adjusted information into a driving power supply chip to complete color correction of the liquid crystal panel and perform subsequent process processing;
according to step (1), the initial color image comprises
Red, green and blue images of the highest brightness standard color;
a red image, a green image, and a blue image of a medium brightness standard color;
according to the steps (2) - (6), the color correction of the panel to be tested is based on the principle of red, green and blue, and then the red image correction is performed, and finally the blue image correction is performed;
the actual correction mode is as follows:
(1) adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a red image, and then shooting a panel display color image of the red color brightness of the panel in the current state;
(2) comparing and analyzing the red image with the highest standard brightness color with the panel display color image shot in the step (1), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the red image with the highest standard brightness color is adjusted to be within an allowable error, and recording the current voltage reading V R1 ；
(3) Regulating the driving power supply to V R1 Half of the voltage drives the power supply to drive the panel to display, and then the panel display color image of the red image color brightness of the panel in the current state is shot;
(4) comparing and analyzing the red image with the standard color with medium brightness with the panel display color image shot in the step (3), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the red image with the standard color with medium brightness is adjusted to be within an allowable error, and recording the current voltage reading V R2 ；
(5) Setting grading color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on panel red image display driving power supply voltage according to specific color level requirements;
(6) adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a green image, and then shooting a panel display color image of the green color brightness of the panel in the current state;
(7) comparing the green image with the highest standard brightness color with the panel display color image shot in the step (6), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the display color image of the panel to be tested and the green image with the highest standard brightness color are adjusted to be within an allowable error, and recording the current voltage reading V G1 ；
(8) Regulating the driving power supply to V G1 Half of the voltage drives the power supply to drive the panel to display, and then the panel with the color brightness of the green image of the panel in the current state is shot to display a color image;
(9) comparing and analyzing the green image with the standard color with medium brightness with the panel display color image shot in the step (8), outputting a comparison result, adjusting the driving power supply voltage of the panel to be tested according to the comparison result until the condition that the display color image of the panel to be tested and the green image with the standard color with medium brightness are within the allowable error is adjusted, and recording the current voltage reading V G2 ；
Setting graded color levels according to the requirements of a liquid crystal panel production process, and carrying out average setting adjustment on the panel green image display driving power supply voltage according to specific color level requirements;
adjusting a driving power supply to the highest working voltage to drive a panel to be tested to display a blue image, and then shooting a panel display color image of the blue color brightness of the panel in the current state;
by combining the blue image of the highest brightness standard color with step +.>The shot panel display color image is compared and analyzed, a comparison result is output, the driving power supply voltage of the panel to be tested is regulated according to the comparison result until the display color image of the panel to be tested and the blue image of the highest brightness standard color are regulated within an allowable error, and the current voltage reading V is recorded B1 ；
Regulating the driving power supply to V B1 Half of the voltage drives the power supply to drive the panel to display, and then the panel with the color brightness of the blue image of the panel in the current state is shot to display a color image;
by combining a blue image of a medium brightness standard color with step +.>The shot panel display color image is compared and analyzed, a comparison result is output, the driving power supply voltage of the panel to be tested is regulated according to the comparison result until the display color image of the panel to be tested and the blue image of the medium brightness standard color are regulated within the allowable error, and the current voltage reading V is recorded B2 ；
Setting grading color levels according to the requirements of the liquid crystal panel production process, and carrying out average setting adjustment on the panel blue image display driving power supply voltage according to specific color level requirements.
2. The color correction method of a liquid crystal panel according to claim 1, wherein: setting the gradation level to 256 levels, adjusting the gradation level to 128 levels according to half of the gradation level, and obtaining a specific gradation driving power voltage according to the adjusted driving power voltage, namely
V Step drive supply voltage ＝(V 1 -V 2 )/128。
3. The color correction method of a liquid crystal panel according to claim 2, wherein: obtaining red, green and blue three-color classification V of the panel to be tested according to the classification driving power supply voltage formula R-stage drive supply voltage 、V G step drive supply voltage And V B stage drive supply voltage 。
4. A color correction method of a liquid crystal panel according to claim 3, wherein: setting a driving power supply driving signal based on the obtained grading driving power supply voltage, correcting a driving power supply of a panel to be detected, storing corrected data to a server, generating a readable two-dimension code label, and attaching the label to a liquid crystal panel after current correction for processing and using in subsequent procedures.
5. The system for implementing a color correction method for a liquid crystal panel according to any one of claims 1 to 4, wherein: comprises a processing server, a high-definition camera, an adjustable driving power supply and a two-dimension code generating module,
the processing server is used for storing a red image, a green image and a blue image of the highest brightness standard color; the method comprises the steps of storing a red image, a green image and a blue image of a medium-brightness standard color, and storing a display color image of a tested liquid crystal panel shot by a high-definition camera and analyzing the display color image and the standard color image;
the high-definition camera is used for shooting and recording the color image displayed by the tested liquid crystal panel and transmitting the color image to the processing server;
the adjustable driving power supply is used for connecting the power supply driving end of the tested liquid crystal panel, and the color and brightness of the tested liquid crystal panel are driven to be displayed through the adjustment of the power supply voltage;
the two-dimensional code generation module is used for generating readable two-dimensional codes for the corrected liquid crystal display panel correction information and linking the two-dimensional codes with the information of the liquid crystal display panel currently tested in the processing server.
6. The system for implementing a color correction method of a liquid crystal panel according to claim 5, wherein: the processing server is a high-performance industrial personal computer, the high-definition camera is a high-frequency acquisition camera, the adjustable driving power supply is a computer-controlled constant-current voltage-regulating driver, and the two-dimensional code generating module comprises a two-dimensional code generating unit embedded in the industrial personal computer and a two-dimensional code label printer connected with the industrial personal computer.
7. The system for implementing a color correction method of a liquid crystal panel according to claim 6, wherein: the high-frequency acquisition camera, the computer-controlled constant-current voltage regulation driver and the two-dimensional code label printer are respectively in communication connection with the high-performance industrial personal computer, the high-frequency acquisition camera is positioned right above the color detection station of the liquid crystal panel, the tested liquid crystal panel is arranged right below the high-frequency acquisition camera, the power output end of the computer-controlled constant-current voltage regulation driver is connected with the power end of the tested liquid crystal panel, the red, green and blue display of the tested liquid crystal panel is regulated, and then the single-color brightness driving power voltage is regulated respectively through the industrial personal computer, so that the high-frequency acquisition camera can capture the brightness displayed by the liquid crystal panel in the current state and compare with the standard color image in the industrial personal computer until the comparison is consistent, the driving power voltage regulation is stopped, and then the current reading voltage is stored.
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