CN113889010B - Aging test method for display panel - Google Patents
Aging test method for display panel Download PDFInfo
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- CN113889010B CN113889010B CN202111250371.1A CN202111250371A CN113889010B CN 113889010 B CN113889010 B CN 113889010B CN 202111250371 A CN202111250371 A CN 202111250371A CN 113889010 B CN113889010 B CN 113889010B
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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
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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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
Abstract
The invention provides a display panel aging test method, which is added with steps of judging and calibrating, and can judge whether the screened abnormal gray scale is correct or not and correct the wrong experimental data, thereby finding out the real gray scale with the most serious chromatic aberration and further improving the accuracy of an aging experiment.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel aging test method.
Background
Before the liquid crystal display panel enters the consumer market, ageing experiments of the display panel are usually carried out for many times, so that the stability of the liquid crystal display panel is verified. The experimental method is generally as follows: and (3) lighting the display panel for a long time, measuring display data after lighting for a long time, comparing the display data with display data at the time of initial lighting, and judging whether the stability of the display panel is over-closed or not through fluctuation of the display data at different lighting times.
However, even if the same experimental method is adopted in each aging experiment, the experimental results are not the same, and the accuracy of the aging experiment is seriously affected.
Disclosure of Invention
The invention aims to provide a display panel aging test method for solving the technical problem that an existing display panel aging test is poor in accuracy of test results.
In order to achieve the above object, the present invention provides a display panel aging test method, which includes the following steps:
illuminating a display panel and measuring display data of the display panel; acquiring a chromaticity difference value between the display panel when the display panel is initially lightened and after the display panel is lightened for a long time; screening out abnormal gray scales according to the chromaticity difference value; judging whether the screened abnormal gray scale is correct or not; and when the screened abnormal gray level is incorrect, calibrating the abnormal gray level.
Further, the step of judging whether the screened abnormal gray level is correct comprises the following steps:
setting a standard difference range; acquiring a first contrast ratio of the display panel during initial lighting; acquiring a second contrast of the display panel after being lightened for a long time; comparing the first contrast with the second contrast.
And when the fluctuation range between the first contrast ratio and the second contrast ratio is in the standard difference range, judging that the abnormal gray level screened is correct. And when the fluctuation range between the first contrast ratio and the second contrast ratio exceeds the standard difference range, judging that the screened abnormal gray level is wrong.
Further, the step of obtaining the first contrast of the display panel at the time of initial lighting includes the steps of:
when the display panel is initially lightened, acquiring first bright state brightness and first dark state brightness of the display panel; substituting the first bright state brightness and the first dark state brightness into a contrast formula to calculate the first contrast.
Further, the step of obtaining the second contrast ratio of the display panel after the long-time lighting includes the steps of:
after the display panel is lightened for a long time, obtaining second bright state brightness and second dark state brightness of the display panel; substituting the second bright state brightness and the second dark state brightness into a contrast formula to calculate the second contrast.
Further, the contrast formula is: contrast = bright/dark state brightness.
Further, the standard deviation ranges from-20% to 20%.
Further, the step of calibrating the abnormal gray level includes the steps of:
acquiring a reference tristimulus value and an abnormal tristimulus value to be corrected of the display panel; the reference tristimulus values and the abnormal tristimulus values are brought into a correction formula to calculate and obtain correct chromaticity data; and obtaining corrected correct abnormal gray scale through the correct chromaticity data.
Further, the step of obtaining the reference tristimulus values and the abnormal tristimulus values of each gray level of the display panel includes the following steps:
acquiring tristimulus values X, Y and Z of each gray level of the display panel when the display panel is initially lightened and after the display panel is lightened for a long time; acquiring a first contrast ratio of the display panel during initial lighting; acquiring a second contrast of the display panel after being lightened for a long time; comparing the first contrast with the second contrast.
And regarding the contrast ratio with larger numerical value, taking the tristimulus value of the dark state picture corresponding to the contrast ratio as the reference tristimulus value. And regarding the contrast ratio with smaller values, taking the tristimulus value of each gray level corresponding to the contrast ratio as the abnormal tristimulus value.
Further, the steps of acquiring tristimulus values X, Y and Z of each gray level at the time of initial lighting and after a long time lighting include the steps of:
acquiring brightness Lv, a chromaticity value x and a chromaticity value y of each gray level of the display panel during initial lighting and after long-time lighting; and respectively calculating the tristimulus values of each gray level of the display panel during initial lighting and after long-time lighting through a tristimulus value calculation formula.
The tristimulus value calculation formula comprises:
X＝(Lv×x)/y；
Y＝Lv；
Z＝[Lv×(1-x-y)]/y。
further, the reference tristimulus values include X Datum 、Y Datum And Z Datum . The abnormal tristimulus values include X Abnormality of 、Y Abnormality of And Z Abnormality of . The chrominance data comprises a chrominance value x and a chrominance value y.
The correction formula includes:
x＝(X abnormality of –X Datum )/(X Abnormality of +Y Abnormality of +Z Abnormality of -X Datum -Y Datum -Z Datum )；
y＝(Y Abnormality of –Y Datum )/(X Abnormality of +Y Abnormality of +Z Abnormality of -X Datum -Y Datum -Z Datum )。
The invention has the advantages that: the aging test method for the display panel can judge whether the screened abnormal gray scale is correct or not, and can correct the related display data, so that the real gray scale with the most serious chromatic aberration can be found out, and the accuracy of an aging experiment is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, 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 flowchart of a display panel aging test method according to an embodiment of the invention;
FIG. 2 is a flowchart of an abnormal gray level determination method according to an embodiment of the present invention;
FIG. 3 is a flowchart of an abnormal gray scale calibration method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram showing variation of chromaticity value y of each gray-scale white point after the experimental panel is lighted for a long time;
FIG. 5 is a graph showing the chromaticity value y of each gray-scale white point of the experimental panel at the initial lighting in the embodiment of the invention;
FIG. 6 is a graph showing the chromaticity value y of the white point before each gray level calibration after the experimental panel is lighted for 48 hours in the embodiment of the invention;
FIG. 7 is a graph showing the white point chromaticity value y of the experimental panel after each gray level calibration after 48 hours of lighting in accordance with the embodiment of the present invention;
FIG. 8 is a graph showing variation in chromaticity value y of white points of each color gradation after calibration according to the embodiment of the present invention.
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.
Unless the context clearly indicates to the contrary, the steps of all methods described herein may be performed in any suitable order. The changes of the invention are not limited to the order of the steps described. The use of any and all examples, or exemplary language presented herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. Numerous modifications and adaptations will be readily apparent to those skilled in the art without departing from the spirit and scope.
Further, it should also be noted that in some alternative implementations, the steps of all methods described herein may occur out of order. For example, two steps shown in succession may, in fact, be executed substantially concurrently, or the steps may sometimes be executed in the reverse order.
Embodiments of the present invention will be described in detail herein with reference to the accompanying drawings. This invention may take many different forms and should not be construed as limited to the particular embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully enable others skilled in the art to understand the various embodiments of the invention and with various modifications as are suited to the particular use contemplated.
The embodiment of the invention provides an aging test method for a display panel, which is used for detecting the aging condition of the display panel after being lighted for a long time. The aging test method of the display panel comprises a detection method, a judgment method and a calibration method of abnormal gray scale. The detection method is used for primarily screening out the gray level with color difference generated after aging and the abnormal gray level with the most serious color difference. The judging method is used for judging whether the screened abnormal gray level is correct or not. If the abnormal gray level is not correct, the calibration method can correct the wrong chromaticity data and re-screen the correct abnormal gray level.
Specifically, the flow of the aging test method of the display panel is shown in fig. 1, and the method comprises the following specific steps:
step S100) lighting the display panel and measuring the related display data of the display panel:
and setting the aging test time of the display panel, and lighting the display panel. And after the display panel is lightened, measuring display data of the display panel in initial lightening.
And continuously lighting the display panel, and measuring the display data of the display panel after the aging test time after the lighting time of the display panel meets the aging test time.
Specifically, the display data includes chromaticity data and luminance data of each gray level, tristimulus values, and the like. Wherein the chrominance data comprises a chrominance value x and a chrominance value y.
Step 200), gray scales which generate serious chromatic aberration after the display panel is aged are screened out through a detection method of abnormal gray scales. Wherein, the detection method comprises steps S210-220.
Step S210) obtains a chromaticity difference value between the initial lighting and the long-time lighting of the display panel:
in the display data measured in step S100, the chromaticity value y of each gray level of the display panel at the time of initial lighting is obtained, and the chromaticity value y of each gray level of the display panel after long-time lighting is obtained.
Subtracting the chromaticity value y of each gray level of the display panel when the display panel is initially lightened from the chromaticity value y of each gray level of the display panel after the display panel is lightened for a long time to obtain the chromaticity difference value of each gray level of the display panel when the display panel is initially lightened and after the display panel is lightened for a long time.
Step S220), screening gray scales which generate serious chromatic aberration after aging according to the chromatic difference value:
the chromaticity difference value of each gray level obtained by calculation in step S210 is obtained, and the chromaticity difference value between each gray level is compared. The gray scale with the largest chromaticity difference value is the abnormal gray scale with the most serious chromatic aberration after aging.
Step S300) judges whether the screened abnormal gray level is correct or not through a judging method of the abnormal gray level. The flow of the judging method is shown in fig. 2, and includes steps S310-S330.
Step S310) sets a standard deviation range:
the standard deviation range of the contrast ratio between the display panel at the time of initial lighting and after a long time of lighting is set. Preferably, the standard deviation ranges from-20% to 20%.
Step S320) obtaining contrast data of the display panel under different lighting durations:
in the display data measured in step S100, a first bright state luminance and a first dark state luminance of the display panel when the display panel is initially lit, and a second bright state luminance and a second dark state luminance of the display panel after the display panel is lit for a long time are obtained.
And bringing the first bright state brightness and the first dark state brightness into a contrast formula, and calculating to obtain a first contrast of the display panel during initial lighting.
And bringing the second bright state brightness and the second dark state brightness into a contrast formula, and calculating to obtain a second contrast of the display panel after being lightened for a long time.
The first brightness state brightness is the brightness of a white picture when the display panel is initially lightened, the first dark state brightness is the brightness of a black picture when the display panel is initially lightened, the second brightness state brightness is the brightness of a white picture when the display panel is lightened for a long time, and the second dark state brightness is the brightness of the black picture when the display panel is lightened for a long time. The contrast formula is: contrast = bright/dark state brightness.
Step S330) judges whether the abnormal gray level screened is correct according to the contrast data:
comparing the magnitude between the first contrast and the second contrast, and calculating the fluctuation between the first contrast and the second contrast. When the fluctuation range between the first contrast and the second contrast is within the standard deviation range, the abnormal gray level screened in step S200 is correct, and the related data can be directly used. When the fluctuation range between the first contrast and the second contrast exceeds the standard deviation range, the abnormal gray level screened in step S200 is incorrect and needs to be corrected.
Step S400) corrects the abnormal gray level and the related data thereof by a calibration method of the abnormal gray level. The flow of the calibration method is shown in fig. 3, and includes steps S410-S430.
Step S410) obtaining the tristimulus values of each gray level of the display panel under different lighting time:
in the display data measured in step S100, tristimulus values X, Y and Z of the respective gray scales at the time of initial lighting of the display panel and after the display panel is lighted for a long time are obtained. The tristimulus values can be measured directly by a measuring tool, and can also be obtained by steps S411-S412:
step S411) obtaining brightness and chromaticity data of each gray level of the display panel at the time of initial lighting and after long-time lighting in the display data measured in the step S100;
step S412) substitutes the luminance (Lv) and chromaticity data of each gray level into a tristimulus value calculation formula, and calculates the tristimulus value of each gray level when the display panel is initially lit and after a long time. Wherein, the tristimulus value calculation formula includes:
X＝(Lv×x)/y；
Y＝Lv；
Z＝[Lv×(1-x-y)]/y。
step S420) corrects the abnormal chromaticity data by the tristimulus values and the correction formula:
the first contrast and the second contrast calculated in step S300 are acquired, and the first contrast and the second contrast are compared. The contrast ratio with larger numerical value is characterized in that the tristimulus value of the dark state picture corresponding to the contrast ratio is a reference tristimulus value; the contrast ratio with smaller value is that the corresponding tristimulus value of each gray level is an abnormal tristimulus value. And correcting the abnormal tri-stimulus with abnormality by taking the reference tri-stimulus value as a correction reference of the chromaticity data, and obtaining a corrected normal tri-stimulus value.
According to the contrast formula, the contrast is smaller, i.e. the dark state brightness is larger, and the low gray-scale picture increases brightness on the basis of the original dark state brightness, so that data abnormality is caused. Therefore, the gray-scale data corresponding to the smaller contrast ratio needs to be corrected, so that the influence on the low-gray-scale picture is avoided.
Acquiring an abnormal tristimulus value of each gray level, and correcting the abnormal tristimulus value of each gray level through a tristimulus value correction formula to obtain the normal tristimulus value of each gray levelStimulus value. Wherein the reference tristimulus values include X Datum 、Y Datum And Z Datum The abnormal tristimulus values include X Abnormality of 、Y Abnormality of And Z Abnormality of The normal tristimulus values include X Normal state 、Y Normal state And Z Normal state 。
The tristimulus value correction formula comprises:
X normal state ＝X Abnormality of -X Datum ；
Y Normal state ＝Y Abnormality of -Y Datum ；
Z Normal state ＝Y Abnormality of -Y Datum 。
The conversion formula between the chromaticity data and the tristimulus value is known as:
x＝X/X+Y+Z；
y＝Y/X+Y+Z。
i.e. the correct chrominance data is:
x＝X normal state /(X Normal state +Y Normal state +Z Normal state )；
y＝Y Normal state /(X Normal state +Y Normal state +Z Normal state )。
Further, combining the correction formula of the tristimulus values with the conversion formula to obtain a correction formula of the chromaticity data:
x＝(X abnormality of –X Datum )/(X Abnormality of +Y Abnormality of +Z Abnormality of -X Datum -Y Datum -Z Datum )；
y＝(Y Abnormality of –Y Datum )/(X Abnormality of +Y Abnormality of +Z Abnormality of -X Datum -Y Datum -Z Datum )。
And respectively bringing the reference tristimulus values and the abnormal tristimulus values of each gray level into the correction formulas of the chromaticity data to calculate so as to obtain the correct chromaticity data after correction of each gray level.
Step S430) calculates the chromaticity difference value of each gray level of the display panel after the display panel is lighted for a long time when the display panel is lighted initially again by using the corrected correct chromaticity data, and screens the gray level which generates serious color difference after aging according to the calculated chromaticity difference value.
Specifically, an embodiment of the invention provides an experimental panel, which adopts the aging test method to perform an aging test. In this experiment, the test panel was aged for 48 hours.
And (3) lighting the experimental panel, and measuring display data of the experimental panel at the time of initial lighting and display data after 48 hours of lighting after lighting.
And acquiring the chromaticity value y of each gray level of the experimental panel when the experimental panel is initially lightened and the chromaticity value y of each gray level of the experimental panel after 48 hours of lightening in the measured display data. The difference between the white point chromaticity value y of each gray level at the time of initial lighting and the white point chromaticity value y of each gray level after 48 hours of lighting is calculated, and a differential fluctuation map of the white point chromaticity value y as shown in fig. 4 is drawn. As can be seen from fig. 4, the maximum value of the chromatic aberration occurs in the 0 th order.
And acquiring first bright state brightness and first dark state brightness of the experimental panel when the experimental panel is initially lightened, second bright state brightness and second dark state brightness of the experimental panel after the experimental panel is lightened for 48 hours, and respectively calculating first contrast of the experimental panel when the experimental panel is initially lightened and second contrast of the experimental panel after the experimental panel is lightened for 48 hours.
Specifically, the relevant brightness data and contrast data of the experimental panel are shown in table 1.
| At the time of initial lighting | After 48 hours of lighting | |
| Bright state brightness | 345.2 | 343.6 |
| Dark state brightness | 0.085 | 0.212 |
| Contrast ratio | 4061 | 1621 |
TABLE 1
As is clear from the data in table 1, the first contrast ratio is 4061, the second contrast ratio is 1621, and the fluctuation between the first contrast ratio and the second contrast ratio is-60%, which exceeds the standard deviation range of-20% to 20%, and thus correction is required.
According to the contrast data, the first contrast is larger than the second contrast chromaticity. Therefore, the tristimulus value of the dark state 0 level corresponding to the first contrast is a reference tristimulus value, the tristimulus value of each gray level corresponding to the second contrast is an abnormal tristimulus value, namely, the abnormal primary color data of the experimental panel after 48 hours of lighting needs to be corrected through a corresponding correction formula, and correct new chromaticity data is obtained again.
Specifically, in the embodiment of the invention, the data sets before and after the calibration of each gray-scale chromaticity value y of the experimental panel at the initial lighting time and after the lighting time of 48 hours are respectively drawn as graphs 5-7. As can be seen from fig. 6 to 7, the chromaticity value y of the experimental panel after 48 hours of lighting was effectively corrected.
The difference between the chromaticity value y of each gray level at the time of initial lighting and the chromaticity value y of each gray level after 48 hours of lighting is calculated again from the corrected chromaticity data, and is plotted as a difference fluctuation diagram as shown in fig. 8. As can be seen from the contents of fig. 8, the actual maximum value of the chromatic aberration does not occur in the order of 0 but in the order of 20 after the experimental panel is lighted for a long time.
In the display panel aging test method provided by the embodiment of the invention, the judgment method and the calibration method for abnormal gray scales are added, whether the screened abnormal gray scales are correct or not is judged by the judgment method, accurate display data is obtained by the calibration method, and the real gray scale with the most serious chromatic aberration is found out, so that the accuracy of an aging experiment is improved.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (9)
1. The display panel aging test method is characterized by comprising the following steps of:
illuminating a display panel and measuring display data of the display panel;
acquiring a chromaticity difference value between the display panel when the display panel is initially lightened and after the display panel is lightened for a long time;
screening out abnormal gray scales according to the chromaticity difference value;
judging whether the screened abnormal gray level is correct, wherein the step of judging whether the screened abnormal gray level is correct comprises the following steps of:
setting a standard difference range;
acquiring a first contrast ratio of the display panel during initial lighting;
acquiring a second contrast of the display panel after being lightened for a long time;
comparing the first contrast with the second contrast;
when the fluctuation range between the first contrast ratio and the second contrast ratio is in the standard difference range, judging that the abnormal gray level screened is correct;
when the fluctuation range between the first contrast ratio and the second contrast ratio exceeds the standard difference range, judging that the screened abnormal gray scale is wrong;
and when the screened abnormal gray level is incorrect, calibrating the abnormal gray level.
2. The display panel aging test method according to claim 1, wherein the step of obtaining the first contrast of the display panel at the time of initial lighting comprises the steps of:
when the display panel is initially lightened, acquiring first bright state brightness and first dark state brightness of the display panel;
substituting the first bright state brightness and the first dark state brightness into a contrast formula to calculate the first contrast.
3. The display panel aging test method according to claim 1, wherein the step of obtaining the second contrast of the display panel after a long time lighting comprises the steps of:
after the display panel is lightened for a long time, obtaining second bright state brightness and second dark state brightness of the display panel;
substituting the second bright state brightness and the second dark state brightness into a contrast formula to calculate the second contrast.
4. The method of claim 2 or 3, wherein the contrast formula is:
contrast = bright/dark state brightness.
5. The method of claim 1, wherein the standard deviation is in the range of-20% to 20%.
6. The method of claim 1, wherein the step of calibrating the abnormal gray scale comprises the steps of:
acquiring a reference tristimulus value and an abnormal tristimulus value to be corrected of the display panel;
the reference tristimulus values and the abnormal tristimulus values are brought into a correction formula to calculate and obtain correct chromaticity data;
and obtaining corrected correct abnormal gray scale through the correct chromaticity data.
7. The method of claim 6, wherein the step of obtaining the reference tristimulus values and the abnormal tristimulus values of each gray level of the display panel comprises the steps of:
acquiring tristimulus values X, Y and Z of each gray level of the display panel when the display panel is initially lightened and after the display panel is lightened for a long time;
acquiring a first contrast ratio of the display panel during initial lighting;
acquiring a second contrast of the display panel after being lightened for a long time;
comparing the first contrast with the second contrast;
regarding the contrast ratio with larger numerical value, taking the tristimulus value of the dark state picture corresponding to the contrast ratio as the reference tristimulus value;
and regarding the contrast ratio with smaller values, taking the tristimulus value of each gray level corresponding to the contrast ratio as the abnormal tristimulus value.
8. The method of aging test of display panel according to claim 7, wherein the steps of obtaining tristimulus values X, Y and Z of each gray level at the time of initial lighting and after a long time of lighting include the steps of:
acquiring brightness Lv, a chromaticity value x and a chromaticity value y of each gray level of the display panel during initial lighting and after long-time lighting;
calculating the tristimulus values of each gray level of the display panel during initial lighting and after long-time lighting respectively through a tristimulus value calculation formula;
the tristimulus value calculation formula comprises:
X＝(Lv×x)/y；
Y＝Lv；
Z＝[Lv×(1-x-y)]/y。
9. the method of claim 6, wherein the reference tristimulus values comprise X Datum 、Y Datum And Z Datum ；
The abnormal tristimulus values include X Abnormality of 、Y Abnormality of And Z Abnormality of ；
The chrominance data comprises a chrominance value x and a chrominance value y;
the correction formula includes:
x＝(X abnormality of –X Datum )/(X Abnormality of +Y Abnormality of +Z Abnormality of -X Datum -Y Datum -Z Datum )；
y＝(Y Abnormality of –Y Datum )/(X Abnormality of +Y Abnormality of +Z Abnormality of -X Datum -Y Datum -Z Datum )。
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| CN110808006B (en) * | 2019-09-06 | 2021-01-15 | 华为技术有限公司 | Display screen aging compensation method, circuit system and electronic equipment |
| CN110634444B (en) * | 2019-09-24 | 2021-02-02 | 昆山国显光电有限公司 | Compensation method of display panel |
| CN111063320A (en) * | 2019-12-04 | 2020-04-24 | 深圳市华星光电半导体显示技术有限公司 | Display panel aging compensation method, device and system and display device |
| CN111968590B (en) * | 2020-08-12 | 2021-10-08 | Tcl华星光电技术有限公司 | Picture display adjusting method and device, storage medium and display equipment |
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