CN111710311A - Adjusting method and device of display panel - Google Patents
Adjusting method and device of display panel Download PDFInfo
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- CN111710311A CN111710311A CN202010621873.XA CN202010621873A CN111710311A CN 111710311 A CN111710311 A CN 111710311A CN 202010621873 A CN202010621873 A CN 202010621873A CN 111710311 A CN111710311 A CN 111710311A
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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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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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
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
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Abstract
The application provides a method and a device for adjusting a display panel. The adjusting method of the display panel comprises the following steps: acquiring a panel to be tested, a first image parameter, a second image parameter, a third image parameter, a first white balance code and a second white balance code; acquiring a first color deviation value of the panel to be detected according to the third image parameter, the original image parameter and the first white balance code; acquiring a second color deviation value of the panel to be detected according to the original image parameter, the second white balance code and the third image parameter; and adjusting the first target gray scale or the second target gray scale according to the comparison between the absolute value of the difference value of the first color deviation value and the second color deviation value and the first threshold value. According to the method and the device, the absolute value of the difference value between the first color deviation value and the second color deviation value is smaller than or equal to the first threshold value by adjusting the first target gray scale or the second target gray scale, so that the color deviation of the display panel is improved, the cost of improving the display panel is reduced, and the yield is kept under the condition that the panel manufacturing process is not required to be changed.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a method and an apparatus for adjusting a display panel.
Background
With the improvement of the requirements of people on the display panel, how to improve the color shift of the display panel under the side-viewing condition is a great development direction to improve the viewing effect under the side-viewing condition.
The conventional display panel, especially the vertical alignment liquid crystal display panel, has a color shift problem in a side view, and when the color shift problem is improved, a process of the display panel is required to be changed, which results in an increase in manufacturing cost of the display panel and a reduction in yield.
Therefore, a new method and apparatus for adjusting a display panel are needed to solve the above-mentioned problems.
Disclosure of Invention
The present application provides a method and an apparatus for adjusting a display panel, which are used to solve the problems of the conventional display panel, such as a vertical alignment liquid crystal display panel, that the manufacturing process of the display panel needs to be changed when the color shift problem is improved, resulting in the increase of the manufacturing cost and the reduction of the yield after the display panel is improved.
In order to solve the technical problem, the technical scheme provided by the application is as follows:
the application provides a method for adjusting a display panel, which comprises the following steps:
acquiring original image parameters of a panel to be detected under each gray scale;
acquiring a first image parameter of the panel to be detected at a first target gray scale and a second image parameter of the panel to be detected at a second target gray scale;
acquiring a first white balance code of the panel to be detected at each gray scale according to the first image parameter, and acquiring a second white balance code of the panel to be detected at each gray scale according to the second image parameter;
acquiring a third image parameter of the panel to be detected at a third target gray scale, acquiring a first color deviation value of the panel to be detected according to the original image parameter, the first white balance code and the third image parameter, and acquiring a second color deviation value of the panel to be detected according to the original image parameter, the second white balance code and the third image parameter;
when the absolute value of the difference value between the first color deviation value and the second color deviation value is larger than a first threshold value, the panel to be detected is an abnormal product, and the first target gray scale or the second target gray scale is adjusted to enable the absolute value of the difference value between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value; otherwise, the panel to be detected is a non-abnormal product.
In the adjusting method of the display panel, the original data parameters include a first white light tristimulus value of each gray scale when the panel to be detected displays white light under front view and different side view angles, a first red light tristimulus value of each gray scale when the panel to be detected displays red light, a first green light tristimulus value of each gray scale when the panel to be detected displays green light, and a first blue light tristimulus value of each gray scale when the panel to be detected displays blue light.
In the adjusting method of the display panel, the first image parameter includes a first chromaticity and a first brightness of the first target gray scale when the panel to be detected displays white light at a front viewing angle, and the second image parameter includes a second chromaticity and a second brightness of the second target gray scale when the panel to be detected displays white light at the front viewing angle.
In the adjusting method of the display panel provided by the application, the steps of obtaining the first white balance codes of the panel to be detected at each gray scale according to the first image parameters and obtaining the second white balance codes of the panel to be detected at each gray scale according to the second image parameters include:
acquiring a first red light white balance code of each gray scale when the panel to be detected displays red light, a first green light white balance code of each gray scale when the panel to be detected displays green light and a first blue light white balance code of each gray scale when the panel to be detected displays blue light according to the first chromaticity and the first brightness of the first target gray scale when the panel to be detected displays white light at a front viewing angle;
and acquiring a second red light white balance code of each gray scale when the panel to be detected displays red light, a second green light white balance code of each gray scale when the panel to be detected displays green light, and a second blue light white balance code of each gray scale when the panel to be detected displays blue light according to the second chromaticity and the second brightness of the second target gray scale when the panel to be detected displays white light at the front viewing angle.
In the adjusting method of the display panel, the steps of obtaining a third image parameter of the panel to be detected at a third target gray scale, obtaining a first color deviation value of the panel to be detected according to the original image parameter, the first white balance code and the third image parameter, and obtaining a second color deviation value of the panel to be detected according to the original image parameter, the second white balance code and the third image parameter include:
acquiring a first red light gray scale, a first green light gray scale and a first blue light gray scale corresponding to the third target gray scale according to the third target gray scale of the panel to be detected;
acquiring the first color deviation value of the panel to be detected under the front view and different side view angles according to the first red gray scale, the first green gray scale and the first blue gray scale, the original image parameter and the first white balance code;
and acquiring the second color deviation value of the panel to be detected under the front view and different side view angles according to the first red gray scale, the first green gray scale and the first blue gray scale, the original image parameters and the second white balance code.
In the adjusting method of the display panel, when the absolute value of the difference between the first color deviation value and the second color deviation value is greater than a first threshold, the panel to be tested is an abnormal product, and the first target gray scale or the second target gray scale is adjusted so that the absolute value of the difference between the first color deviation value and the second color deviation value is less than or equal to the first threshold, including:
when the first color deviation value of the panel to be detected under the front view or the same side view angle is larger than the second color deviation value and the absolute value of the difference value between the first color deviation value and the second color deviation value is larger than the first threshold value, adjusting a first target red light gray scale or a second target green light gray scale to enable the absolute value of the difference value between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value;
when the first color deviation value of the panel to be detected is smaller than the second color deviation value and the absolute value of the difference value between the first color deviation value and the second color deviation value is larger than the first threshold value under the front view or the same side view angle, adjusting the first target green light gray scale or the second target red light gray scale to enable the absolute value of the difference value between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value.
The application also provides a regulating device of the display panel, which comprises an acquisition module, a calculation module and a judgment module;
the acquisition module comprises a first acquisition submodule, a second acquisition submodule and a third acquisition submodule, wherein the first acquisition submodule is used for acquiring original image parameters of the panel to be detected under each gray scale, the second acquisition submodule is used for acquiring first image parameters of the panel to be detected at a first target gray scale and second image parameters of the panel to be detected at a second target gray scale, and the third acquisition submodule is used for acquiring third image parameters of the panel to be detected at a third target gray scale;
the calculation module comprises a first calculation submodule and a second calculation submodule, the first calculation submodule is used for obtaining a first white balance code of the panel to be measured at each gray scale according to the first image parameter and obtaining a second white balance code of the panel to be measured at each gray scale according to the second image parameter, the second calculation submodule is used for obtaining a first color deviation value of the panel to be measured according to the original image parameter, the first white balance code and the third image parameter and obtaining a second color deviation value of the panel to be measured according to the original image parameter, the second white balance code and the third image parameter;
the determination module is configured to determine whether an absolute value of a difference between the first color deviation value and the second color deviation value is greater than a first threshold, and when the absolute value of the difference between the first color deviation value and the second color deviation value is greater than the first threshold, the panel to be tested is an abnormal product, and adjust the first target gray scale or the second target gray scale so that the absolute value of the difference between the first color deviation value and the second color deviation value is less than or equal to the first threshold; otherwise, the panel to be detected is a non-abnormal product.
In the adjusting device for the display panel, the first obtaining sub-module includes a first obtaining element, the second obtaining sub-module includes a second obtaining unit, and the third obtaining sub-module includes a third obtaining unit;
the first acquisition unit is used for acquiring a first white light tristimulus value of each gray scale when the panel to be detected displays white light in front view and different side-view angles, a first red light tristimulus value of each gray scale when the panel to be detected displays red light, a first green light tristimulus value of each gray scale when the panel to be detected displays green light, and a first blue light tristimulus value of each gray scale when the panel to be detected displays blue light;
the second obtaining unit is used for obtaining first chromaticity and first brightness of the first target gray scale when the panel to be detected displays white light under a front view angle, and obtaining second chromaticity and second brightness of the second target gray scale when the panel to be detected displays white light under the front view angle;
the third obtaining unit is used for obtaining a first red light gray scale, a first green light gray scale and a first blue light gray scale corresponding to the third target gray scale according to the third target gray scale of the panel to be detected.
In the adjusting device for the display panel, the first computing submodule comprises a first computing unit and a second computing unit, and the second computing submodule comprises a third computing unit and a fourth computing unit;
the first computing unit is used for acquiring a first red light white balance code of each gray scale when the panel to be tested displays red light, a first green light white balance code of each gray scale when the panel to be tested displays green light and a first blue light white balance code of each gray scale when the panel to be tested displays blue light according to first chromaticity and first brightness of the first target gray scale when the panel to be tested displays white light at a front view angle;
the second computing unit is used for acquiring a second red light white balance code of each gray scale when the panel to be tested displays red light, a second green light white balance code of each gray scale when the panel to be tested displays green light and a second blue light white balance code of each gray scale when the panel to be tested displays blue light according to second chromaticity and second brightness of the second target gray scale when the panel to be tested displays white light at a front view angle;
the third calculating unit is used for acquiring the first color deviation value of the panel to be detected under the front view and different side view angles according to the first red gray scale, the first green gray scale, the first blue gray scale, the original image parameter and the first white balance code;
the fourth calculating unit is used for acquiring the second color deviation value of the panel to be detected under the front view and different side view angles according to the first red gray scale, the first green gray scale, the first blue gray scale, the original image parameter and the second white balance code.
In the adjusting device of the display panel, the judging module comprises a first judging unit and a first adjusting unit;
the first judging unit is used for judging whether the magnitude of the first color deviation value and the second color deviation value of the panel to be tested under a front view or the same side view angle and the absolute value of the difference value of the first color deviation value and the second color deviation value are larger than the first threshold value or not;
the first adjusting unit is used for adjusting a first target red gray scale or a second target green gray scale to enable the absolute value of the difference between the first color bias value and the second color bias value to be smaller than or equal to the first threshold value when the first color bias value of the panel to be detected under the front view or the same side view angle is larger than the second color bias value and the absolute value of the difference between the first color bias value and the second color bias value is larger than the first threshold value, and adjusting the first target green gray scale or the second target red gray scale to enable the absolute value of the difference between the first color bias value and the second color bias value to be smaller than or equal to the first threshold value when the first color bias value under the front view or the same side view angle is smaller than the second color bias value and the absolute value of the difference between the first color bias value and the second color bias value is larger than the first threshold value.
Has the advantages that: according to the method and the device, the absolute value of the difference value between the first color deviation value and the second color deviation value is smaller than or equal to the first threshold value by adjusting the first target gray scale or the second target gray scale, so that the color deviation of the display panel is improved, the cost of improving the display panel is reduced, and the yield is kept under the condition that the panel manufacturing process is not required to be changed.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an adjusting method of a display panel according to the present application.
Fig. 2 is a first schematic diagram of a first color shift value and a second color shift value according to the present application.
FIG. 3 is a second schematic diagram of the first color shift value and the second color shift value of the present application.
FIG. 4 is a third schematic diagram of the first color shift value and the second color shift value of the present application.
FIG. 5 is a fourth graph illustrating the first color shift value and the second color shift value of the present application.
Fig. 6 is a first structural schematic diagram of an adjusting device of a display panel according to the present application.
Fig. 7 is a second structural diagram of an adjusting device of a display panel according to the present application.
Fig. 8 is a schematic structural diagram of an acquisition module of the adjustment apparatus for a display panel according to the present application.
Fig. 9 is a schematic structural diagram of a computing module of the adjusting apparatus of the display panel according to 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 is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
When an existing display panel, such as a vertical alignment liquid crystal display panel, is improved to solve the color shift problem, the manufacturing process of the display panel needs to be changed, and the problems of increased manufacturing cost and reduced product yield after the display panel is improved exist. Based on this, the present application provides an adjusting method and an adjusting device for a display panel.
Referring to fig. 1, the adjusting method of the display panel includes:
and S1, acquiring the original image parameters of the panel to be detected under each gray scale.
In this embodiment, the original data parameters include a first white light tristimulus value of each gray scale when the panel to be tested displays white light in front view and at different side view angles, a first red light tristimulus value of each gray scale when the panel to be tested displays red light, a first green light tristimulus value of each gray scale when the panel to be tested displays green light, and a first blue light tristimulus value of each gray scale when the panel to be tested displays blue light.
In this embodiment, the obtaining of the first white light tristimulus value, the first red light tristimulus value, the first green light tristimulus value, and the first blue light tristimulus value may be performed under a condition that a white balance code of the panel to be tested is turned off.
The white balance codes include a red white balance code, a green white balance code, and a blue white balance code.
In this embodiment, the different side viewing angles may be angles such as ± 15 degrees, ± 30 degrees, ± 45 degrees, ± 60 degrees, and the like when the front viewing angle is 0 degree, or other angles, and are not limited specifically herein.
S2, acquiring a first image parameter of the panel to be detected at a first target gray scale and a second image parameter of the panel to be detected at a second target gray scale.
In this embodiment, the first image parameters include a first chromaticity and a first brightness of the first target gray scale when the panel to be tested displays white light at a front viewing angle, and the second image parameters include a second chromaticity and a second brightness of the second target gray scale when the panel to be tested displays white light at the front viewing angle.
For example, the first image parameter may include the first chromaticity and the first brightness of the first target gray scale when the panel under test displays 255-order white light at a front viewing angle, and the second image parameter may include the second chromaticity and the second brightness of the second target gray scale when the panel under test displays 255-order white light at a front viewing angle.
At this time, the first target red gray scale may be 255 levels or 235 levels, the first target green gray scale may be 255 levels or 235 levels, and the first target blue gray scale may be 255 levels or 235 levels.
The second target red gray scale may be 255-level or 235-level, the second target green gray scale may be 255-level or 235-level, and the second target blue gray scale may be 255-level or 235-level.
When the first target red gray scale, the first target green gray scale, and the first target blue gray scale are all 255 levels, the second target red gray scale, the second target green gray scale, and the second target blue gray scale are not all 255 levels, and vice versa.
In this embodiment, the first image parameter and the second image parameter are both obtained under the condition that the white balance code of the panel to be tested is turned on.
S3, acquiring a first white balance code of the panel to be detected at each gray scale according to the first image parameter, and acquiring a second white balance code of the panel to be detected at each gray scale according to the second image parameter.
In this embodiment, step S3 includes:
s31, acquiring a first red light white balance code at each gray scale when the panel to be tested displays red light, a first green light white balance code at each gray scale when the panel to be tested displays green light, and a first blue light white balance code at each gray scale when the panel to be tested displays blue light according to the first chromaticity and the first brightness of the first target gray scale when the panel to be tested displays white light at a front view angle.
In this embodiment, according to the first chromaticity and the first brightness of the first target gray scale when the panel to be tested displays white light at a front viewing angle, based on a gamma2.2 brightness curve and the principle that the chromaticity of white light of each order is the same as the first chromaticity, the first red light white balance code at each gray scale when the panel to be tested displays red light, the first green light white balance code at each gray scale when the panel to be tested displays green light, and the first blue light white balance code at each gray scale when the panel to be tested displays blue light can be obtained.
S32, obtaining a second red light white balance code of each gray scale when the panel to be tested displays red light, a second green light white balance code of each gray scale when the panel to be tested displays green light and a second blue light white balance code of each gray scale when the panel to be tested displays blue light according to the second chromaticity and the second brightness of the second target gray scale when the panel to be tested displays white light at the front view angle.
In this embodiment, based on a gamma2.2 luminance curve and the principle that the chromaticity of each level of white light is the same as the second chromaticity, the second red light white balance code of each gray scale when the panel to be tested displays red light, the second green light white balance code of each gray scale when the panel to be tested displays green light, and the second blue light white balance code of each gray scale when the panel to be tested displays blue light can be obtained according to the second chromaticity and the second luminance of the second target gray scale when the panel to be tested displays white light at a front viewing angle.
S4, obtaining a third image parameter of the panel to be tested at a third target gray scale, obtaining a first color deviation value of the panel to be tested according to the original image parameter, the first white balance code and the third image parameter, and obtaining a second color deviation value of the panel to be tested according to the original image parameter, the second white balance code and the third image parameter.
In this embodiment, step S4 includes:
s41, obtaining a first red light gray scale, a first green light gray scale and a first blue light gray scale corresponding to the third target gray scale according to the third target gray scale of the panel to be detected.
In this embodiment, the third target gray scale may be a gray scale of white light of the panel to be tested specified by a customer, and the first red gray scale, the first green gray scale, and the first blue gray scale may be gray scales specified by a customer.
For example, the first red gray scale, the first green gray scale, and the first blue gray scale may be 133 th order, 101 th order, and 75 th order, respectively, the first red gray scale, the first green gray scale, and the first blue gray scale may be 192 th order, 156 th order, and 129 th order, the first red gray scale, the first green gray scale, and the first blue gray scale may be 186 th order, 161 th order, and 143 th order, respectively, and the first red gray scale, the first green gray scale, and the first blue gray scale may be 211 th order, 153 th order, and 126 th order, respectively.
S42, obtaining the first color deviation value of the panel to be tested under the front view and different side view angles according to the first red light gray scale, the first green light gray scale and the first blue light gray scale, the original image parameters and the first white balance code.
In this embodiment, step S42 includes:
s42a, obtaining second white light tri-stimulus values of the panel to be detected under the front view and different side view angles according to the first red light gray scale, the first green light gray scale and the first blue light gray scale, the original image parameters and the first white balance code;
s42b, obtaining the surface to be measured according to the second white light tri-stimulus values of the panel to be measured under the front view and different side view anglesFirst front-view hue h at front-view and different side-view angles when the panel displays white light1 front viewAnd a first side view hue hSide view of 1；
In this embodiment, the conversion between the second white light tristimulus value and the first front view hue and the first side view hue is obtained by a 1976Lab color model conversion of the international commission on illumination, and details thereof are not repeated herein.
S42c, according to the formula of the hue and the color cast: dh ═ hFront view-hSide view) And obtaining the first color deviation value of the panel to be tested under the front view and different side view angles.
S43, obtaining the second color deviation value of the panel to be tested under the front view and different side view angles according to the first red gray scale, the first green gray scale and the first blue gray scale, the original image parameters and the second white balance code.
In this embodiment, the obtaining manner of the second color deviation value is the same as or similar to the obtaining manner of the first color deviation value, and is not repeated herein.
S5, when the absolute value of the difference between the first color deviation value and the second color deviation value is larger than a first threshold value, the panel to be tested is an abnormal product, and the first target gray scale or the second target gray scale is adjusted to enable the absolute value of the difference between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value. In this embodiment, step S5 includes:
s51, when the first color deviation value of the panel to be tested is larger than the second color deviation value and the absolute value of the difference between the first color deviation value and the second color deviation value is larger than the first threshold value under the front view or the same side view angle, adjusting the first target red gray scale or the second target green gray scale to enable the absolute value of the difference between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value.
In this embodiment, the first threshold is greater than 0.
S52, when the first color deviation value of the panel to be tested is smaller than the second color deviation value and the absolute value of the difference between the first color deviation value and the second color deviation value is larger than the first threshold value under the front view or the same side view angle, adjusting the first target green light gray scale or the second target red light gray scale to enable the absolute value of the difference between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value.
Referring to fig. 2 to 5, in this embodiment, when the first red gray scale, the first green gray scale and the first blue gray scale are respectively 133 levels, 101 levels and 75 levels, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 192 levels, 156 levels and 129 levels, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 186 levels, 161 levels and 143 levels, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 211 levels, 153 levels and 126 levels, the first target red gray scale, the first target green gray scale and the first target blue gray scale are 255 levels, the second target red gray scale, the second target green gray scale and the second target blue gray scale are respectively 235 levels, 255 levels, And 255 steps, at this time, the first color bias value of the panel to be tested under the front view or the same side view angle is larger than the second color bias value, and the absolute value of the difference value between the first color bias value and the second color bias value can be smaller than or equal to a first threshold value by reducing the second target green gray scale.
The reduction range of the second target green gray scale is 1 to 50 levels.
Referring to fig. 2 to 5, when the first red gray scale, the first green gray scale and the first blue gray scale are respectively 133 th order, 101 th order and 75 th order, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 192 th order, 156 th order and 129 th order, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 186 th order, 161 th order and 143 th order, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 211 th order, 153 th order and 126 th order, the second target red gray scale, the second target green gray scale and the second target blue gray scale are respectively 255 th order, 235 th order and 255 th order, at this time, the first color bias value of the panel to be tested at the front view or the same side view angle is smaller than the second color bias value, the absolute value of the difference between the first color shift value and the second color shift value may be made smaller than or equal to the first threshold by decreasing the second target red gray level.
The reduction range of the second target red gray scale is 1 to 50 levels.
Referring to fig. 2 to 5, when the first red gray scale, the first green gray scale and the first blue gray scale are respectively 133 levels, 101 levels and 75 levels, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 192 levels, 156 levels and 129 levels, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 186 levels, 161 levels and 143 levels, the first red gray scale, the first green gray scale and the first blue gray scale are respectively 211 levels, 153 levels and 126 levels, the first target red gray scale, the first target green gray scale and the first target blue gray scale are 255 levels, the second target red gray scale, the second target green gray scale and the second target blue gray scale are respectively 255 levels, 255 levels and 235 levels, at this time, the absolute value of the difference between the first color deviation value and the second color deviation value is smaller than or equal to the first threshold, so that the adjustment of the second target blue gray scale has little influence on the improvement of the color deviation of the panel to be tested.
S6, otherwise, the panel to be tested is a non-abnormal product.
According to the method and the device, the absolute value of the difference value between the first color deviation value and the second color deviation value is smaller than or equal to the first threshold value by adjusting the first target gray scale or the second target gray scale, so that the color deviation of the display panel is improved, the cost of improving the display panel is reduced, and the yield is kept under the condition that the panel manufacturing process is not required to be changed.
Referring to fig. 6 to 9, an adjusting device 100 for a display panel is also provided. The adjusting device 100 of the display panel comprises an obtaining module 10, a calculating module 20 and a judging module 30.
The obtaining module 10 includes a first obtaining submodule 11, a second obtaining submodule 12, and a third obtaining submodule 13, where the first obtaining submodule 11 is configured to obtain original image parameters of a panel to be detected at each gray scale, the second obtaining submodule 12 is configured to obtain first image parameters of the panel to be detected at a first target gray scale and second image parameters of the panel to be detected at a second target gray scale, and the third obtaining submodule 13 is configured to obtain third image parameters of the panel to be detected at a third target gray scale.
The calculation module 20 includes a first calculation submodule 21 and a second calculation submodule 22, the first calculation submodule 21 is configured to obtain a first white balance code of the panel to be measured at each gray scale according to the first image parameter, and obtain a second white balance code of the panel to be measured at each gray scale according to the second image parameter, the second calculation submodule 22 is configured to obtain a first color bias value of the panel to be measured according to the original image parameter, the first white balance code, and the third image parameter, and obtain a second color bias value of the panel to be measured according to the original image parameter, the second white balance code, and the third image parameter.
The determining module 30 is configured to determine whether an absolute value of a difference between the first color deviation value and the second color deviation value is greater than a first threshold, and when the absolute value of the difference between the first color deviation value and the second color deviation value is greater than the first threshold, the panel to be tested is an abnormal product, and adjust the first target gray scale or the second target gray scale so that the absolute value of the difference between the first color deviation value and the second color deviation value is smaller than or equal to the first threshold; otherwise, the panel to be detected is a non-abnormal product.
Referring to fig. 8, in the adjusting apparatus 100 for a display panel of the present application, the first obtaining sub-module 11 includes a first obtaining unit 111, the second obtaining sub-module 12 includes a second obtaining unit 121, and the third obtaining sub-module 13 includes a third obtaining unit 131.
The first obtaining unit 111 is configured to obtain a first white light tristimulus value of each gray scale when the panel to be tested displays white light in a front view and at different side view angles, a first red light tristimulus value of each gray scale when the panel to be tested displays red light, a first green light tristimulus value of each gray scale when the panel to be tested displays green light, and a first blue light tristimulus value of each gray scale when the panel to be tested displays blue light.
The second obtaining unit 121 is configured to obtain a first chromaticity and a first brightness of the first target gray scale when the panel to be tested displays white light at a front viewing angle, and obtain a second chromaticity and a second brightness of the second target gray scale when the panel to be tested displays white light at the front viewing angle.
The third obtaining unit 131 is configured to obtain a first red gray scale, a first green gray scale, and a first blue gray scale corresponding to the third target gray scale according to the third target gray scale of the panel to be tested.
Referring to fig. 9, in the adjusting apparatus 100 of the display panel of the present application, the first computing submodule 21 includes a first computing unit 211 and a second computing unit 212, and the second computing submodule 22 includes a third computing unit 221 and a fourth computing unit 222.
The first calculating unit 211 is configured to obtain a first red white balance code at each gray scale when the panel to be tested displays red light, a first green white balance code at each gray scale when the panel to be tested displays green light, and a first blue white balance code at each gray scale when the panel to be tested displays blue light, according to the first chromaticity and the first brightness of the first target gray scale when the panel to be tested displays white light at a front viewing angle.
The second calculating unit 212 is configured to obtain a second red light white balance code at each gray scale when the panel to be tested displays red light, a second green light white balance code at each gray scale when the panel to be tested displays green light, and a second blue light white balance code at each gray scale when the panel to be tested displays blue light according to a second chromaticity and a second brightness of the second target gray scale when the panel to be tested displays white light at a front viewing angle.
The third calculating unit 221 is configured to obtain the first color deviation value of the panel to be tested at the front view and different side view angles according to the first red gray scale, the first green gray scale, the first blue gray scale, the original image parameter, and the first white balance code.
The fourth calculating unit 222 is configured to obtain the second color deviation value of the panel to be tested in front view and at different side view angles according to the first red gray scale, the first green gray scale, and the first blue gray scale, the original image parameter, and the second white balance code.
Referring to fig. 7, in the adjusting apparatus 100 of the display panel of the present application, the determining module 30 includes a first determining unit 31 and a first adjusting unit 32.
The first determining unit 31 is configured to determine whether the first color shift value and the second color shift value of the panel to be tested in a front view or a same side view and the absolute value of the difference between the first color shift value and the second color shift value are greater than the first threshold.
The first adjusting unit 32 is configured to adjust a first target red gray scale or a second target green gray scale so that an absolute value of a difference between the first color bias value and the second color bias value is smaller than or equal to the first threshold when the first color bias value of the panel to be tested at a front view angle or a same side view angle is larger than the second color bias value and an absolute value of a difference between the first color bias value and the second color bias value is larger than the first threshold, and adjust the first target green gray scale or the second target red gray scale so that the absolute value of the difference between the first color bias value and the second color bias value is smaller than or equal to the first threshold when the first color bias value of the panel to be tested at the front view angle or the same side view angle is smaller than the second color bias value and the absolute value of the difference between the first color bias value and the second color bias value is larger than the first threshold.
In this embodiment, the working principle of the adjusting apparatus 100 for a display panel may refer to the adjusting method for a display panel, and is not described in detail herein.
The application provides a method and a device for adjusting a display panel. The adjusting method of the display panel comprises the following steps: acquiring a panel to be tested, a first image parameter, a second image parameter, a third image parameter, a first white balance code and a second white balance code; acquiring a first color deviation value of the panel to be detected according to the third image parameter, the original image parameter and the first white balance code; acquiring a second color deviation value of the panel to be detected according to the original image parameter, the second white balance code and the third image parameter; and adjusting the first target gray scale or the second target gray scale according to the comparison between the absolute value of the difference value of the first color deviation value and the second color deviation value and the first threshold value. According to the method and the device, the absolute value of the difference value between the first color deviation value and the second color deviation value is smaller than or equal to the first threshold value by adjusting the first target gray scale or the second target gray scale, so that the color deviation of the display panel is improved, the cost of improving the display panel is reduced, and the yield is kept under the condition that the panel manufacturing process is not required to be changed.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing describes in detail a method and an apparatus for adjusting a display panel provided in an embodiment of the present application, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the foregoing embodiment is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. An adjustment method for a display panel, comprising:
acquiring original image parameters of a panel to be detected under each gray scale;
acquiring a first image parameter of the panel to be detected at a first target gray scale and a second image parameter of the panel to be detected at a second target gray scale;
acquiring a first white balance code of the panel to be detected at each gray scale according to the first image parameter, and acquiring a second white balance code of the panel to be detected at each gray scale according to the second image parameter;
acquiring a third image parameter of the panel to be detected at a third target gray scale, acquiring a first color deviation value of the panel to be detected according to the original image parameter, the first white balance code and the third image parameter, and acquiring a second color deviation value of the panel to be detected according to the original image parameter, the second white balance code and the third image parameter;
when the absolute value of the difference value between the first color deviation value and the second color deviation value is larger than a first threshold value, the panel to be detected is an abnormal product, and the first target gray scale or the second target gray scale is adjusted to enable the absolute value of the difference value between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value; otherwise, the panel to be detected is a non-abnormal product.
2. The method as claimed in claim 1, wherein the raw data parameters include a first white light tristimulus value at each gray level when the panel to be tested displays white light in front view and at different side view angles, a first red light tristimulus value at each gray level when red light is displayed, a first green light tristimulus value at each gray level when green light is displayed, and a first blue light tristimulus value at each gray level when blue light is displayed.
3. The method according to claim 1, wherein the first image parameters include a first chromaticity and a first luminance at the first target gray level when the panel under test displays white light at a front viewing angle, and the second image parameters include a second chromaticity and a second luminance at the second target gray level when the panel under test displays white light at the front viewing angle.
4. The method as claimed in claim 1, wherein the step of obtaining a first white balance code of the panel under test at each gray level according to the first image parameter and obtaining a second white balance code of the panel under test at each gray level according to the second image parameter comprises:
acquiring a first red light white balance code of each gray scale when the panel to be detected displays red light, a first green light white balance code of each gray scale when the panel to be detected displays green light and a first blue light white balance code of each gray scale when the panel to be detected displays blue light according to the first chromaticity and the first brightness of the first target gray scale when the panel to be detected displays white light at a front viewing angle;
and acquiring a second red light white balance code of each gray scale when the panel to be detected displays red light, a second green light white balance code of each gray scale when the panel to be detected displays green light, and a second blue light white balance code of each gray scale when the panel to be detected displays blue light according to the second chromaticity and the second brightness of the second target gray scale when the panel to be detected displays white light at the front viewing angle.
5. The method as claimed in claim 1, wherein the steps of obtaining a third image parameter of the panel under test at a third target gray level, obtaining a first color shift value of the panel under test according to the original image parameter, the first white balance code and the third image parameter, and obtaining a second color shift value of the panel under test according to the original image parameter, the second white balance code and the third image parameter comprise:
acquiring a first red light gray scale, a first green light gray scale and a first blue light gray scale corresponding to the third target gray scale according to the third target gray scale of the panel to be detected;
acquiring the first color deviation value of the panel to be detected under the front view and different side view angles according to the first red gray scale, the first green gray scale and the first blue gray scale, the original image parameter and the first white balance code;
and acquiring the second color deviation value of the panel to be detected under the front view and different side view angles according to the first red gray scale, the first green gray scale and the first blue gray scale, the original image parameters and the second white balance code.
6. The method as claimed in claim 1, wherein when the absolute value of the difference between the first color deviation value and the second color deviation value is greater than a first threshold, the panel under test is an abnormal product, and the step of adjusting the first target gray scale or the second target gray scale such that the absolute value of the difference between the first color deviation value and the second color deviation value is less than or equal to the first threshold comprises:
when the first color deviation value of the panel to be detected under the front view or the same side view angle is larger than the second color deviation value and the absolute value of the difference value between the first color deviation value and the second color deviation value is larger than the first threshold value, adjusting a first target red light gray scale or a second target green light gray scale to enable the absolute value of the difference value between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value;
when the first color deviation value of the panel to be detected is smaller than the second color deviation value and the absolute value of the difference value between the first color deviation value and the second color deviation value is larger than the first threshold value under the front view or the same side view angle, adjusting the first target green light gray scale or the second target red light gray scale to enable the absolute value of the difference value between the first color deviation value and the second color deviation value to be smaller than or equal to the first threshold value.
7. The adjusting device of the display panel is characterized by comprising an acquisition module, a calculation module and a judgment module;
the acquisition module comprises a first acquisition submodule, a second acquisition submodule and a third acquisition submodule, wherein the first acquisition submodule is used for acquiring original image parameters of the panel to be detected under each gray scale, the second acquisition submodule is used for acquiring first image parameters of the panel to be detected at a first target gray scale and second image parameters of the panel to be detected at a second target gray scale, and the third acquisition submodule is used for acquiring third image parameters of the panel to be detected at a third target gray scale;
the calculation module comprises a first calculation submodule and a second calculation submodule, the first calculation submodule is used for obtaining a first white balance code of the panel to be measured at each gray scale according to the first image parameter and obtaining a second white balance code of the panel to be measured at each gray scale according to the second image parameter, the second calculation submodule is used for obtaining a first color deviation value of the panel to be measured according to the original image parameter, the first white balance code and the third image parameter and obtaining a second color deviation value of the panel to be measured according to the original image parameter, the second white balance code and the third image parameter;
the determination module is configured to determine whether an absolute value of a difference between the first color deviation value and the second color deviation value is greater than a first threshold, and when the absolute value of the difference between the first color deviation value and the second color deviation value is greater than the first threshold, the panel to be tested is an abnormal product, and adjust the first target gray scale or the second target gray scale so that the absolute value of the difference between the first color deviation value and the second color deviation value is less than or equal to the first threshold; otherwise, the panel to be detected is a non-abnormal product.
8. The adjustment apparatus for a display panel according to claim 7, wherein the first obtaining sub-module includes a first obtaining unit, the second obtaining sub-module includes a second obtaining unit, and the third obtaining sub-module includes a third obtaining unit;
the first acquisition unit is used for acquiring a first white light tristimulus value of each gray scale when the panel to be detected displays white light in front view and different side-view angles, a first red light tristimulus value of each gray scale when the panel to be detected displays red light, a first green light tristimulus value of each gray scale when the panel to be detected displays green light, and a first blue light tristimulus value of each gray scale when the panel to be detected displays blue light;
the second obtaining unit is used for obtaining first chromaticity and first brightness of the first target gray scale when the panel to be detected displays white light under a front view angle, and obtaining second chromaticity and second brightness of the second target gray scale when the panel to be detected displays white light under the front view angle;
the third obtaining unit is used for obtaining a first red light gray scale, a first green light gray scale and a first blue light gray scale corresponding to the third target gray scale according to the third target gray scale of the panel to be detected.
9. The apparatus according to claim 7, wherein the first computing submodule includes a first computing unit and a second computing unit, and the second computing submodule includes a third computing unit and a fourth computing unit;
the first computing unit is used for acquiring a first red light white balance code of each gray scale when the panel to be tested displays red light, a first green light white balance code of each gray scale when the panel to be tested displays green light and a first blue light white balance code of each gray scale when the panel to be tested displays blue light according to first chromaticity and first brightness of the first target gray scale when the panel to be tested displays white light at a front view angle;
the second computing unit is used for acquiring a second red light white balance code of each gray scale when the panel to be tested displays red light, a second green light white balance code of each gray scale when the panel to be tested displays green light and a second blue light white balance code of each gray scale when the panel to be tested displays blue light according to second chromaticity and second brightness of the second target gray scale when the panel to be tested displays white light at a front view angle;
the third calculating unit is used for acquiring the first color deviation value of the panel to be detected under the front view and different side view angles according to the first red gray scale, the first green gray scale, the first blue gray scale, the original image parameter and the first white balance code;
the fourth calculating unit is used for acquiring the second color deviation value of the panel to be detected under the front view and different side view angles according to the first red gray scale, the first green gray scale, the first blue gray scale, the original image parameter and the second white balance code.
10. The apparatus according to claim 7, wherein the determination module comprises a first determination unit and a first adjustment unit;
the first judging unit is used for judging whether the magnitude of the first color deviation value and the second color deviation value of the panel to be tested under a front view or the same side view angle and the absolute value of the difference value of the first color deviation value and the second color deviation value are larger than the first threshold value or not;
the first adjusting unit is used for adjusting a first target red gray scale or a second target green gray scale to enable the absolute value of the difference between the first color bias value and the second color bias value to be smaller than or equal to the first threshold value when the first color bias value of the panel to be detected under the front view or the same side view angle is larger than the second color bias value and the absolute value of the difference between the first color bias value and the second color bias value is larger than the first threshold value, and adjusting the first target green gray scale or the second target red gray scale to enable the absolute value of the difference between the first color bias value and the second color bias value to be smaller than or equal to the first threshold value when the first color bias value under the front view or the same side view angle is smaller than the second color bias value and the absolute value of the difference between the first color bias value and the second color bias value is larger than the first threshold value.
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| CN113539205A (en) * | 2021-07-30 | 2021-10-22 | 深圳市华星光电半导体显示技术有限公司 | Pixel voltage determination method and device, electronic equipment and storage medium |
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