CN116841066A - Color cast compensation method and system for liquid crystal display screen - Google Patents
Color cast compensation method and system for liquid crystal display screen Download PDFInfo
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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
- 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
- G02F1/1323—Arrangements for providing a switchable viewing angle
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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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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Abstract
The application discloses a color cast compensation method and a system of a liquid crystal display, wherein the method comprises the following steps: detecting a current view angle of the liquid crystal display screen, and acquiring current pixel brightness and current pixel chromaticity of the liquid crystal display screen under the current view angle; locating a compensation pixel point based on the current pixel brightness and the current pixel chromaticity, and determining current color temperature data of the liquid crystal display screen according to a color temperature change curve of the compensation pixel point; color temperature polaroids with different specifications or polaroids with different materials are selected according to the current color temperature data of the liquid crystal display; and replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials to perform color cast compensation. The extra power cost caused by providing the driving voltage when the liquid crystal display screen works is not needed. The electric power cost is saved and the safety is improved. The display effect can be ensured, and the subsequent repeated occurrence of the color cast problem can be avoided.
Description
Technical Field
The application relates to the technical field of display, in particular to a color cast compensation method and a color cast compensation system for a liquid crystal display.
Background
In recent years, OLED (organic light-emitting diode) technology has been rapidly developed, and it has become the most promising technology for replacing LCDs (liquid crystal displays), in which pixels of the OLED display are designed to be flat, and in the case of a large viewing angle, such display color shift phenomenon is serious, and improvement is needed. Color shift is the difference between color difference and true color due to one or more of weak or strong colors. When the viewing angle increases, the color of the display screen deviates, namely the color cast of the large viewing angle. The current approach for improving color shift is to subdivide each sub-pixel into a main pixel and a sub-pixel, then drive the main pixel with a relatively high drive voltage and drive the sub-pixel with a relatively low drive voltage, which together display a sub-pixel. And the relatively high driving voltage and the relatively low driving voltage can maintain the relationship between the brightness and the corresponding gray scale under the front view angle unchanged when the main pixel and the sub-pixel are driven, which has the following problems: the stable driving voltage is required to be kept for the liquid crystal display at all times to ensure the stable operation of the main pixels and the secondary pixels, so that the operation cost is increased.
Disclosure of Invention
The application provides a color cast compensation method and a color cast compensation system for a liquid crystal display screen, aiming at the problems of the prior art that stable driving voltage is required to be kept for the liquid crystal display screen at any time to ensure stable operation of main pixels and sub-pixels, and the operation cost is increased.
A color cast compensation method of a liquid crystal display screen comprises the following steps:
detecting a current view angle of the liquid crystal display screen, and acquiring current pixel brightness and current pixel chromaticity of the liquid crystal display screen under the current view angle;
locating a compensation pixel point based on the current pixel brightness and the current pixel chromaticity, and determining current color temperature data of the liquid crystal display screen according to a color temperature change curve of the compensation pixel point;
color temperature polaroids with different specifications or polaroids with different materials are selected according to the current color temperature data of the liquid crystal display;
and replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials to perform color cast compensation.
Preferably, the detecting, for a current viewing angle of the liquid crystal display, obtains a current pixel brightness and a current pixel chromaticity of the liquid crystal display under the current viewing angle, including:
detecting the current relative position relation between the visual point and the liquid crystal display screen, and determining the current visual angle of the liquid crystal display screen based on the current relative position relation;
acquiring pixel attribute information under different test viewing angles, and acquiring reference pixel brightness and reference pixel chromaticity of the liquid crystal display screen under different test viewing angles according to the pixel attribute information;
constructing binding relation between the viewing angle and the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen based on the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen under different testing viewing angles;
and acquiring the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current view angle according to the binding relation.
Preferably, the positioning the compensation pixel point based on the current pixel brightness and the current pixel chromaticity and determining the current color temperature data of the liquid crystal display according to the color temperature change curve of the compensation pixel point include:
obtaining standard pixel brightness and standard pixel chromaticity, and confirming target pixel points with different current pixel brightness and current pixel chromaticity from the standard pixel brightness and the standard pixel chromaticity as compensation pixel points;
acquiring two-dimensional coordinates of each compensation pixel point in the liquid crystal display screen and positioning the two-dimensional coordinates according to the two-dimensional coordinates;
constructing a color temperature change curve of each compensation pixel point according to the initial color temperature and the current color temperature of the compensation pixel point;
determining the regional distribution condition of the compensation pixel points according to the positioning result, determining the comprehensive color temperature influence weight of the compensation pixel points according to the regional distribution condition, and determining the current color temperature data of the liquid crystal display screen based on the comprehensive color temperature influence weight according to the color temperature change curve of the compensation pixel points.
Preferably, the selecting the color temperature polarizers of different specifications or polarizers of different materials according to the current color temperature data of the liquid crystal display includes:
determining a current color temperature value of a liquid crystal display screen according to current color temperature data, and determining a magnitude relation between the current color temperature value and a first median value of a high color temperature interval or a second median value of a low color temperature interval;
selecting a low-color-temperature polaroid if the current color temperature value is larger than or equal to the first median value, and selecting a high-color-temperature polaroid if the current color temperature value is smaller than or equal to the second median value;
if the current color temperature value is smaller than the first median value and larger than the second median value, detecting the material property of the current polaroid of the liquid crystal display screen;
and determining whether the material property is glass property, and if not, selecting the glass material polaroid as a replacement polaroid.
Preferably, the replacing the current polarizer of the liquid crystal display with a color temperature polarizer of different specifications or a polarizer of different materials to perform color shift compensation includes:
acquiring current replacement program parameters of the polaroid, and analyzing the replacement program parameters to acquire operation parameters of a disassembly and installation method of the polaroid;
determining operation difficulty levels according to operation parameters of a disassembly and assembly method of the polaroid, and selecting corresponding level engineers based on the operation difficulty levels;
replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials by utilizing corresponding grade engineers;
detecting the color cast effect of the replaced liquid crystal display screen and confirming whether the color cast effect is qualified, if so, not carrying out subsequent operation, otherwise, replacing the polaroid again.
A color shift compensation system for a liquid crystal display, the system comprising:
the acquisition module is used for detecting the current visual angle of the liquid crystal display screen and acquiring the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current visual angle;
the determining module is used for positioning the compensation pixel point based on the current pixel brightness and the current pixel chromaticity and determining the current color temperature data of the liquid crystal display screen according to the color temperature change curve of the compensation pixel point;
the selection module is used for selecting color temperature polaroids with different specifications or polaroids with different materials according to the current color temperature data of the liquid crystal display screen;
and the replacement module is used for replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials so as to perform color cast compensation.
Preferably, the acquiring module includes:
the first detection sub-module is used for detecting the current relative position relation between the visual point and the liquid crystal display screen and determining the current visual angle of the liquid crystal display screen based on the current relative position relation;
the first acquisition submodule is used for acquiring pixel attribute information under different test visual angles and acquiring reference pixel brightness and reference pixel chromaticity of the liquid crystal display screen under different test visual angles according to the pixel attribute information;
the construction submodule is used for constructing a binding relation between the viewing angle and the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen based on the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen under different testing viewing angles;
and the second acquisition sub-module is used for acquiring the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current visual angle according to the binding relation.
Preferably, the determining module includes:
the third acquisition submodule is used for acquiring standard pixel brightness and standard pixel chromaticity and confirming target pixel points with different current pixel brightness and current pixel chromaticity from the standard pixel brightness and the standard pixel chromaticity as compensation pixel points;
the positioning sub-module is used for acquiring the two-dimensional coordinates of each compensation pixel point in the liquid crystal display screen and positioning the compensation pixel points according to the two-dimensional coordinates;
the construction submodule is used for constructing a color temperature change curve of each compensation pixel point according to the initial color temperature and the current color temperature of the compensation pixel point;
the first determining sub-module is used for determining the regional distribution condition of the compensation pixel points according to the positioning result, determining the comprehensive color temperature influence weight of the compensation pixel points according to the regional distribution condition, and determining the current color temperature data of the liquid crystal display screen based on the comprehensive color temperature influence weight according to the color temperature change curve of the compensation pixel points.
Preferably, the selecting module includes:
the second determining submodule is used for determining a current color temperature value of the liquid crystal display screen according to the current color temperature data and determining the magnitude relation between the current color temperature value and a first median value of a high color temperature interval or a second median value of a low color temperature interval;
the first selecting submodule is used for selecting a low-color-temperature polaroid if the current color temperature value is larger than or equal to the first median value, and selecting a high-color-temperature polaroid if the current color temperature value is smaller than or equal to the second median value;
the first detection submodule is used for detecting the material property of the current polaroid of the liquid crystal display screen if the current color temperature value is smaller than the first median value and larger than the second median value;
and the second selecting sub-module is used for determining whether the material property is glass property, and if not, selecting the glass material polaroid as a replacing polaroid.
Preferably, the replacing module includes:
the analysis submodule is used for acquiring replacement program parameters of the current polaroid, analyzing the replacement program parameters and acquiring operation parameters of a disassembly and assembly method of the polaroid;
the third selecting sub-module is used for determining the operation difficulty level according to the operation parameters of the disassembly and assembly methods of the polaroid, and selecting a corresponding level engineer based on the operation difficulty level;
the replacing sub-module is used for replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials by utilizing corresponding grade engineers;
and the second detection sub-module is used for detecting the color cast effect of the replaced liquid crystal display screen and confirming whether the color cast effect is qualified or not, if so, the subsequent operation is not needed, and otherwise, the polaroid is replaced again.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical scheme of the application is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application.
FIG. 1 is a flowchart of a color shift compensation method for a liquid crystal display according to the present application;
FIG. 2 is a flowchart of a color shift compensation method of an LCD according to the present application;
FIG. 3 is a schematic diagram of a color shift compensation system of a liquid crystal display according to the present application;
fig. 4 is a schematic structural diagram of an acquisition module in a color cast compensation system of a liquid crystal display according to the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
In recent years, OLED (organic light-emitting diode) technology has been rapidly developed, and it has become the most promising technology for replacing LCDs (liquid crystal displays), in which pixels of the OLED display are designed to be flat, and in the case of a large viewing angle, such display color shift phenomenon is serious, and improvement is needed. Color shift is the difference between color difference and true color due to one or more of weak or strong colors. When the viewing angle increases, the color of the display screen deviates, namely the color cast of the large viewing angle. The current approach for improving color shift is to subdivide each sub-pixel into a main pixel and a sub-pixel, then drive the main pixel with a relatively high drive voltage and drive the sub-pixel with a relatively low drive voltage, which together display a sub-pixel. And the relatively high driving voltage and the relatively low driving voltage can maintain the relationship between the brightness and the corresponding gray scale under the front view angle unchanged when the main pixel and the sub-pixel are driven, which has the following problems: the stable driving voltage is required to be kept for the liquid crystal display at all times to ensure the stable operation of the main pixels and the secondary pixels, so that the operation cost is increased. In order to solve the above-mentioned problems, the present embodiment discloses a color shift compensation method for a liquid crystal display.
A color cast compensation method of a liquid crystal display screen, as shown in figure 1, comprises the following steps:
step S101, detecting a current view angle of a liquid crystal display screen, and acquiring current pixel brightness and current pixel chromaticity of the liquid crystal display screen under the current view angle;
step S102, locating a compensation pixel point based on the current pixel brightness and the current pixel chromaticity and determining the current color temperature data of the liquid crystal display screen according to a color temperature change curve of the compensation pixel point;
step S103, selecting color temperature polarizers with different specifications or polarizers with different materials according to the current color temperature data of the liquid crystal display;
step S104, replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials to perform color cast compensation.
In this embodiment, the current viewing angle represents an angle between the viewer and the horizontal plane of the liquid crystal display;
in this embodiment, the current pixel brightness is expressed as the display brightness of the pixel point of the liquid crystal display screen;
in this embodiment, the current pixel chromaticity is expressed as the display chromaticity of the pixel point of the liquid crystal display screen;
in the present embodiment, the compensation pixel points are represented as pixel points whose display luminance and display chromaticity are not acceptable;
in this embodiment, the color temperature change curve is expressed as a working color temperature change curve in a period from factory delivery to current use of the compensation pixel point;
in this embodiment, the different specifications may be a high color temperature specification and a low color temperature specification, and the different materials may be a glass material and a plastic material.
The working principle of the technical scheme is as follows: detecting a current view angle of the liquid crystal display screen, and acquiring current pixel brightness and current pixel chromaticity of the liquid crystal display screen under the current view angle; locating a compensation pixel point based on the current pixel brightness and the current pixel chromaticity, and determining current color temperature data of the liquid crystal display screen according to a color temperature change curve of the compensation pixel point; color temperature polaroids with different specifications or polaroids with different materials are selected according to the current color temperature data of the liquid crystal display; and replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials to perform color cast compensation.
The beneficial effects of the technical scheme are as follows: the color cast compensation is carried out by utilizing the mode of replacing the polaroid, so that the display effect can be ensured, the situation that the color cast problem appears repeatedly in the follow-up process can be avoided, the practicability is improved, and meanwhile, the extra electric power cost caused by providing the driving voltage during the operation of the liquid crystal display screen is not needed. The method saves the power cost and improves the safety, and solves the problems that the stable operation of the main pixels and the secondary pixels is ensured by keeping stable driving voltage for the liquid crystal display screen all the time in the prior art, and the operation cost is improved.
In this embodiment, the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current viewing angle are obtained through the display image of the liquid crystal display screen, and at this time, the quality evaluation is required to be performed on the collected display image to determine whether the collected display image meets the detection requirements of the pixel brightness and the pixel chromaticity, and the specific evaluation steps are as follows:
detecting color deviation of the acquired first display image, and acquiring a quality index of each image block of the first display image based on the color deviation and a preset color consistency index;
dividing all the image blocks into standard image blocks and degraded image blocks according to the quality index of each image block;
detecting a first image display characteristic of each degraded image block and a second image display characteristic of the standard image block;
determining a state offset vector between the first image feature and the second image feature, and determining the degradation type of each degradation image block based on a semantic analysis method according to the state offset vector;
determining a quality interference reason of each degraded image based on the degradation type of each degraded image block, and determining an acquisition strategy of each degraded image block based on the quality interference reason;
evaluating the compatibility among the acquisition strategies of all the degraded image blocks, and selecting a target acquisition strategy from the acquisition strategies of all the degraded image blocks according to the compatibility;
acquiring a second display image through a target acquisition strategy, and detecting detail texture characteristics of the same image block in the first display image and the second display image;
independent component analysis is carried out on the detail texture features of the same image block, and independent component proportions of each image block in the first display image and the second display image are obtained;
determining whether the deviation value of the proportion of the independent components of each image block in the first display image and the second display image is within a preset range or not, if so, determining that the detail texture of the second display image is qualified, and if not, determining that the quality evaluation of the first display image is unqualified;
after confirming that the detail texture of the second display image is qualified, comparing the image mapping characteristics of each image block in the second display image in a local binary mode to obtain a comparison result;
acquiring a first image quality score of each image block according to the comparison result, and carrying out weighted calculation on the first image quality scores of all the image blocks to acquire a second quality score of a second display image;
and calculating whether the difference value between the score value of the second quality score and the preset quality score value is a positive value or a 0 value, if so, determining that the quality evaluation of the second display image is qualified, and if not, determining that the quality evaluation of the second display image is unqualified.
In this embodiment, the color deviation is expressed as a deviation of display colors of respective image blocks of the first display image, the image blocks being divided into equal areas based on an image area of the first display image;
in this embodiment, the preset color consistency index is expressed as a consistency numerical index of the display color of the first display image under the guarantee of good visual effect;
in the present embodiment, the quality index is expressed as a mapping index of each image block in terms of image quality;
in the present embodiment, the standard image block is represented as an image block of acceptable image quality, and the degraded image block is represented as an image block of unacceptable image quality;
in the present embodiment, the image display feature is represented as an image display feature of a degraded image block and a standard image block within the first display image;
in the present embodiment, the state offset vector is represented as a state change value of an image parameter item of the degraded image block compared to the standard image block;
in the present embodiment, the degradation type is expressed as an image type of a different kind of degradation image;
in the present embodiment, the quality disturbance cause is expressed as an objective degradation cause of each degraded image block;
in this embodiment, the acquisition strategy is represented as an acquisition condition, an acquisition mode, and the like of each image block;
in the present embodiment, the independent component is represented as an image component in which the first display image and the second display image have not appeared in the counterpart image;
in this embodiment, the preset range may be 3%;
in this embodiment, the image mapping feature is represented as a mapping feature such as image brightness, sharpness, etc. of each image block in the second display image;
in the present embodiment, the quality score is determined according to the comparison result, and the image quality score of each image block may be determined with reference to the image feature as a score evaluation criterion.
The beneficial effects of the technical scheme are as follows: the quality objective reasons brought by each image block can be maximally serviced by determining the acquisition strategy of each quality-reduced image block and then re-acquiring the second display image, so that the high quality and the referential property of the image reference sample are ensured, further, whether the replaced second display image meets the use requirement can be effectively evaluated by carrying out detail texture comparison, the error is reduced, the reliability of the referential sample is ensured, further, whether the acquired image meets the quality requirement can be rapidly and accurately evaluated in a data form by carrying out image mapping feature comparison to determine the image quality score of the second display image, and the practicability and the working efficiency are further improved.
In one embodiment, as shown in fig. 2, the detecting, for the current viewing angle of the liquid crystal display, obtains the current pixel brightness and the current pixel chromaticity of the liquid crystal display at the current viewing angle, including:
step S201, detecting the current relative position relation between the visual point and the liquid crystal display screen, and determining the current visual angle of the liquid crystal display screen based on the current relative position relation;
step S202, acquiring pixel attribute information under different test viewing angles, and acquiring reference pixel brightness and reference pixel chromaticity of a liquid crystal display screen under different test viewing angles according to the pixel attribute information;
step S203, constructing a binding relation between the viewing angle and the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen based on the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen under different testing viewing angles;
and step S204, acquiring the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current view angle according to the binding relation.
In the present embodiment, the current relative positional relationship is expressed as a relative direction and distance offset relationship between the position of the visual point and the position of the liquid crystal display;
in the present embodiment, the test viewing angle is expressed as a plurality of viewing angles having angular deviation;
in this embodiment, the pixel attribute information is represented as pixel display parameter information of the liquid crystal display at each test viewing angle;
in this embodiment, the reference pixel brightness is expressed as a standard reference pixel brightness value of the liquid crystal display screen under different test viewing angles;
in this embodiment, the reference pixel chromaticity is expressed as a standard reference pixel chromaticity value of the liquid crystal display at different test viewing angles.
The beneficial effects of the technical scheme are as follows: the current pixel brightness and the current pixel chromaticity corresponding to the current view angle can be rapidly screened out by constructing the binding relation between the view angle and the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen, and the data acquisition precision and efficiency are improved.
In one embodiment, the locating the compensation pixel point based on the current pixel brightness and the current pixel chromaticity and determining the current color temperature data of the liquid crystal display according to the color temperature variation curve of the compensation pixel point includes:
obtaining standard pixel brightness and standard pixel chromaticity, and confirming target pixel points with different current pixel brightness and current pixel chromaticity from the standard pixel brightness and the standard pixel chromaticity as compensation pixel points;
acquiring two-dimensional coordinates of each compensation pixel point in the liquid crystal display screen and positioning the two-dimensional coordinates according to the two-dimensional coordinates;
constructing a color temperature change curve of each compensation pixel point according to the initial color temperature and the current color temperature of the compensation pixel point;
determining the regional distribution condition of the compensation pixel points according to the positioning result, determining the comprehensive color temperature influence weight of the compensation pixel points according to the regional distribution condition, and determining the current color temperature data of the liquid crystal display screen based on the comprehensive color temperature influence weight according to the color temperature change curve of the compensation pixel points.
The beneficial effects of the technical scheme are as follows: the defect pixel point can be rapidly and accurately determined by positioning the defect pixel point according to the coordinate value, so that the positioning precision and the positioning efficiency are improved, and further, the current color temperature data of the liquid crystal display screen is objectively determined by issuing the influence effect of the compensation pixel point on the display of the liquid crystal display screen according to the regional distribution condition and the color temperature change curve of the compensation pixel point, so that the precision and the accuracy of the data are higher.
In one embodiment, the selecting color temperature polarizers of different specifications or polarizers of different materials according to the current color temperature data of the liquid crystal display includes:
determining a current color temperature value of a liquid crystal display screen according to current color temperature data, and determining a magnitude relation between the current color temperature value and a first median value of a high color temperature interval or a second median value of a low color temperature interval;
selecting a low-color-temperature polaroid if the current color temperature value is larger than or equal to the first median value, and selecting a high-color-temperature polaroid if the current color temperature value is smaller than or equal to the second median value;
if the current color temperature value is smaller than the first median value and larger than the second median value, detecting the material property of the current polaroid of the liquid crystal display screen;
and determining whether the material property is glass property, and if not, selecting the glass material polaroid as a replacement polaroid.
The beneficial effects of the technical scheme are as follows: the adaptive polaroid can be selected for replacement according to the real-time color temperature condition, so that the display effect is ensured, the compatibility between the replacement polaroid and the liquid crystal display screen is improved, and the practicability and the stability are improved.
In one embodiment, the replacing the current polarizer of the liquid crystal display with a color temperature polarizer of different specifications or a polarizer of different materials to perform color shift compensation includes:
acquiring current replacement program parameters of the polaroid, and analyzing the replacement program parameters to acquire operation parameters of a disassembly and installation method of the polaroid;
determining operation difficulty levels according to operation parameters of a disassembly and assembly method of the polaroid, and selecting corresponding level engineers based on the operation difficulty levels;
replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials by utilizing corresponding grade engineers;
detecting the color cast effect of the replaced liquid crystal display screen and confirming whether the color cast effect is qualified, if so, not carrying out subsequent operation, otherwise, replacing the polaroid again.
In this embodiment, the replacement program parameter is expressed as a program operation parameter of replacement of the current polarizer;
in the present embodiment, the disassembly and assembly manipulation parameters are expressed as manipulation step parameters for manually performing disassembly and assembly of the polarizer;
in this embodiment, the corresponding levels may be a primary engineer, a middle level engineer, and a high level engineer.
The beneficial effects of the technical scheme are as follows: the engineer of corresponding grade can guarantee implementation stability and reliability to polaroid replacement work, further improves practicality and security, and further, whether the color cast compensation work to the liquid crystal display screen is successfully completed can be further determined through carrying out color cast effect evaluation, and further improves the practicality.
In one embodiment, the present embodiment further discloses a color shift compensation system of a liquid crystal display, as shown in fig. 3, where the system includes:
an obtaining module 301, configured to detect a current viewing angle of the liquid crystal display screen, and obtain a current pixel brightness and a current pixel chromaticity of the liquid crystal display screen under the current viewing angle;
the determining module 302 is configured to locate a compensated pixel point based on the current pixel brightness and the current pixel chromaticity and determine current color temperature data of the liquid crystal display according to a color temperature variation curve of the compensated pixel point;
the selection module 303 is configured to select color temperature polarizers of different specifications or polarizers of different materials according to current color temperature data of the liquid crystal display;
the replacing module 304 is configured to replace the current polarizer of the liquid crystal display with a color temperature polarizer of different specifications or a polarizer of different materials to perform color shift compensation.
The working principle of the technical scheme is as follows: firstly, detecting a current view angle of a liquid crystal display screen by using an acquisition module, and acquiring the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current view angle; secondly, locating a compensation pixel point based on the current pixel brightness and the current pixel chromaticity through a determining module, and determining current color temperature data of the liquid crystal display screen according to a color temperature change curve of the compensation pixel point; then using a selection module to select color temperature polarizers with different specifications or polarizers with different materials according to the current color temperature data of the liquid crystal display screen; and finally, replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials by using a replacement module so as to perform color cast compensation.
The beneficial effects of the technical scheme are as follows: the color cast compensation is carried out by utilizing the mode of replacing the polaroid, so that the display effect can be ensured, the situation that the color cast problem appears repeatedly in the follow-up process can be avoided, the practicability is improved, and meanwhile, the extra electric power cost caused by providing the driving voltage during the operation of the liquid crystal display screen is not needed. Saving the electric power cost and improving the safety
In one embodiment, as shown in fig. 4, the obtaining module 301 includes:
a first detection sub-module 3011, configured to detect a current relative positional relationship between the visual point and the liquid crystal display screen, and determine a current viewing angle for the liquid crystal display screen based on the current relative positional relationship;
the first obtaining submodule 3012 is used for obtaining pixel attribute information under different testing visual angles, and obtaining reference pixel brightness and reference pixel chromaticity of the liquid crystal display screen under different testing visual angles according to the pixel attribute information;
a construction sub-module 3013, configured to construct a binding relationship between the viewing angle and the reference pixel luminance and the reference pixel chromaticity of the liquid crystal display screen based on the reference pixel luminance and the reference pixel chromaticity of the liquid crystal display screen under different test viewing angles;
the second obtaining sub-module 3014 is configured to obtain, according to the binding relationship, a current pixel luminance and a current pixel chromaticity of the liquid crystal display screen under the current viewing angle.
The beneficial effects of the technical scheme are as follows: the current pixel brightness and the current pixel chromaticity corresponding to the current view angle can be rapidly screened out by constructing the binding relation between the view angle and the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen, and the data acquisition precision and efficiency are improved.
In one embodiment, the determining module includes:
the third acquisition submodule is used for acquiring standard pixel brightness and standard pixel chromaticity and confirming target pixel points with different current pixel brightness and current pixel chromaticity from the standard pixel brightness and the standard pixel chromaticity as compensation pixel points;
the positioning sub-module is used for acquiring the two-dimensional coordinates of each compensation pixel point in the liquid crystal display screen and positioning the compensation pixel points according to the two-dimensional coordinates;
the construction submodule is used for constructing a color temperature change curve of each compensation pixel point according to the initial color temperature and the current color temperature of the compensation pixel point;
the first determining sub-module is used for determining the regional distribution condition of the compensation pixel points according to the positioning result, determining the comprehensive color temperature influence weight of the compensation pixel points according to the regional distribution condition, and determining the current color temperature data of the liquid crystal display screen based on the comprehensive color temperature influence weight according to the color temperature change curve of the compensation pixel points.
The beneficial effects of the technical scheme are as follows: the defect pixel point can be rapidly and accurately determined by positioning the defect pixel point according to the coordinate value, so that the positioning precision and the positioning efficiency are improved, and further, the current color temperature data of the liquid crystal display screen is objectively determined by issuing the influence effect of the compensation pixel point on the display of the liquid crystal display screen according to the regional distribution condition and the color temperature change curve of the compensation pixel point, so that the precision and the accuracy of the data are higher.
In one embodiment, the selection module includes:
the second determining submodule is used for determining a current color temperature value of the liquid crystal display screen according to the current color temperature data and determining the magnitude relation between the current color temperature value and a first median value of a high color temperature interval or a second median value of a low color temperature interval;
the first selecting submodule is used for selecting a low-color-temperature polaroid if the current color temperature value is larger than or equal to the first median value, and selecting a high-color-temperature polaroid if the current color temperature value is smaller than or equal to the second median value;
the first detection submodule is used for detecting the material property of the current polaroid of the liquid crystal display screen if the current color temperature value is smaller than the first median value and larger than the second median value;
and the second selecting sub-module is used for determining whether the material property is glass property, and if not, selecting the glass material polaroid as a replacing polaroid.
The beneficial effects of the technical scheme are as follows: the adaptive polaroid can be selected for replacement according to the real-time color temperature condition, so that the display effect is ensured, the compatibility between the replacement polaroid and the liquid crystal display screen is improved, and the practicability and the stability are improved.
In one embodiment, the replacement module comprises:
the analysis submodule is used for acquiring replacement program parameters of the current polaroid, analyzing the replacement program parameters and acquiring operation parameters of a disassembly and assembly method of the polaroid;
the third selecting sub-module is used for determining the operation difficulty level according to the operation parameters of the disassembly and assembly methods of the polaroid, and selecting a corresponding level engineer based on the operation difficulty level;
the replacing sub-module is used for replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials by utilizing corresponding grade engineers;
and the second detection sub-module is used for detecting the color cast effect of the replaced liquid crystal display screen and confirming whether the color cast effect is qualified or not, if so, the subsequent operation is not needed, and otherwise, the polaroid is replaced again.
The beneficial effects of the technical scheme are as follows: the engineer of corresponding grade can guarantee implementation stability and reliability to polaroid replacement work, further improves practicality and security, and further, whether the color cast compensation work to the liquid crystal display screen is successfully completed can be further determined through carrying out color cast effect evaluation, and further improves the practicality.
It will be appreciated by those skilled in the art that the first and second aspects of the present application refer to different phases of application.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. The color cast compensation method of the liquid crystal display screen is characterized by comprising the following steps of:
detecting a current view angle of the liquid crystal display screen, and acquiring current pixel brightness and current pixel chromaticity of the liquid crystal display screen under the current view angle;
locating a compensation pixel point based on the current pixel brightness and the current pixel chromaticity, and determining current color temperature data of the liquid crystal display screen according to a color temperature change curve of the compensation pixel point;
color temperature polaroids with different specifications or polaroids with different materials are selected according to the current color temperature data of the liquid crystal display;
and replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials to perform color cast compensation.
2. The method for compensating color shift of a liquid crystal display according to claim 1, wherein the detecting obtains a current pixel luminance and a current pixel chromaticity of the liquid crystal display at a current viewing angle for the current viewing angle of the liquid crystal display, comprising:
detecting the current relative position relation between the visual point and the liquid crystal display screen, and determining the current visual angle of the liquid crystal display screen based on the current relative position relation;
acquiring pixel attribute information under different test viewing angles, and acquiring reference pixel brightness and reference pixel chromaticity of the liquid crystal display screen under different test viewing angles according to the pixel attribute information;
constructing binding relation between the viewing angle and the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen based on the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen under different testing viewing angles;
and acquiring the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current view angle according to the binding relation.
3. The color shift compensation method of claim 1, wherein the locating the compensation pixel based on the current pixel brightness and the current pixel chromaticity and determining the current color temperature data of the liquid crystal display according to the color temperature change curve of the compensation pixel comprises:
obtaining standard pixel brightness and standard pixel chromaticity, and confirming target pixel points with different current pixel brightness and current pixel chromaticity from the standard pixel brightness and the standard pixel chromaticity as compensation pixel points;
acquiring two-dimensional coordinates of each compensation pixel point in the liquid crystal display screen and positioning the two-dimensional coordinates according to the two-dimensional coordinates;
constructing a color temperature change curve of each compensation pixel point according to the initial color temperature and the current color temperature of the compensation pixel point;
determining the regional distribution condition of the compensation pixel points according to the positioning result, determining the comprehensive color temperature influence weight of the compensation pixel points according to the regional distribution condition, and determining the current color temperature data of the liquid crystal display screen based on the comprehensive color temperature influence weight according to the color temperature change curve of the compensation pixel points.
4. The color cast compensation method of the liquid crystal display according to claim 1, wherein selecting color temperature polarizers of different specifications or polarizers of different materials according to current color temperature data of the liquid crystal display comprises:
determining a current color temperature value of a liquid crystal display screen according to current color temperature data, and determining a magnitude relation between the current color temperature value and a first median value of a high color temperature interval or a second median value of a low color temperature interval;
selecting a low-color-temperature polaroid if the current color temperature value is larger than or equal to the first median value, and selecting a high-color-temperature polaroid if the current color temperature value is smaller than or equal to the second median value;
if the current color temperature value is smaller than the first median value and larger than the second median value, detecting the material property of the current polaroid of the liquid crystal display screen;
and determining whether the material property is glass property, and if not, selecting the glass material polaroid as a replacement polaroid.
5. The color shift compensation method of claim 1, wherein the replacing the current polarizer of the liquid crystal display with a color temperature polarizer of different specifications or a polarizer of different materials for color shift compensation comprises:
acquiring current replacement program parameters of the polaroid, and analyzing the replacement program parameters to acquire operation parameters of a disassembly and installation method of the polaroid;
determining operation difficulty levels according to operation parameters of a disassembly and assembly method of the polaroid, and selecting corresponding level engineers based on the operation difficulty levels;
replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials by utilizing corresponding grade engineers;
detecting the color cast effect of the replaced liquid crystal display screen and confirming whether the color cast effect is qualified, if so, not carrying out subsequent operation, otherwise, replacing the polaroid again.
6. A color shift compensation system for a liquid crystal display, the system comprising:
the acquisition module is used for detecting the current visual angle of the liquid crystal display screen and acquiring the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current visual angle;
the determining module is used for positioning the compensation pixel point based on the current pixel brightness and the current pixel chromaticity and determining the current color temperature data of the liquid crystal display screen according to the color temperature change curve of the compensation pixel point;
the selection module is used for selecting color temperature polaroids with different specifications or polaroids with different materials according to the current color temperature data of the liquid crystal display screen;
and the replacement module is used for replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials so as to perform color cast compensation.
7. The color shift compensation system of claim 6, wherein the acquisition module comprises:
the first detection sub-module is used for detecting the current relative position relation between the visual point and the liquid crystal display screen and determining the current visual angle of the liquid crystal display screen based on the current relative position relation;
the first acquisition submodule is used for acquiring pixel attribute information under different test visual angles and acquiring reference pixel brightness and reference pixel chromaticity of the liquid crystal display screen under different test visual angles according to the pixel attribute information;
the construction submodule is used for constructing a binding relation between the viewing angle and the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen based on the reference pixel brightness and the reference pixel chromaticity of the liquid crystal display screen under different testing viewing angles;
and the second acquisition sub-module is used for acquiring the current pixel brightness and the current pixel chromaticity of the liquid crystal display screen under the current visual angle according to the binding relation.
8. The color shift compensation system of claim 6, wherein the determining module comprises:
the third acquisition submodule is used for acquiring standard pixel brightness and standard pixel chromaticity and confirming target pixel points with different current pixel brightness and current pixel chromaticity from the standard pixel brightness and the standard pixel chromaticity as compensation pixel points;
the positioning sub-module is used for acquiring the two-dimensional coordinates of each compensation pixel point in the liquid crystal display screen and positioning the compensation pixel points according to the two-dimensional coordinates;
the construction submodule is used for constructing a color temperature change curve of each compensation pixel point according to the initial color temperature and the current color temperature of the compensation pixel point;
the first determining sub-module is used for determining the regional distribution condition of the compensation pixel points according to the positioning result, determining the comprehensive color temperature influence weight of the compensation pixel points according to the regional distribution condition, and determining the current color temperature data of the liquid crystal display screen based on the comprehensive color temperature influence weight according to the color temperature change curve of the compensation pixel points.
9. The color shift compensation system of claim 6, wherein the selection module comprises:
the second determining submodule is used for determining a current color temperature value of the liquid crystal display screen according to the current color temperature data and determining the magnitude relation between the current color temperature value and a first median value of a high color temperature interval or a second median value of a low color temperature interval;
the first selecting submodule is used for selecting a low-color-temperature polaroid if the current color temperature value is larger than or equal to the first median value, and selecting a high-color-temperature polaroid if the current color temperature value is smaller than or equal to the second median value;
the first detection submodule is used for detecting the material property of the current polaroid of the liquid crystal display screen if the current color temperature value is smaller than the first median value and larger than the second median value;
and the second selecting sub-module is used for determining whether the material property is glass property, and if not, selecting the glass material polaroid as a replacing polaroid.
10. The color shift compensation system of claim 6, wherein the replacement module comprises:
the analysis submodule is used for acquiring replacement program parameters of the current polaroid, analyzing the replacement program parameters and acquiring operation parameters of a disassembly and assembly method of the polaroid;
the third selecting sub-module is used for determining the operation difficulty level according to the operation parameters of the disassembly and assembly methods of the polaroid, and selecting a corresponding level engineer based on the operation difficulty level;
the replacing sub-module is used for replacing the current polaroid of the liquid crystal display screen with color temperature polaroids of different specifications or polaroids of different materials by utilizing corresponding grade engineers;
and the second detection sub-module is used for detecting the color cast effect of the replaced liquid crystal display screen and confirming whether the color cast effect is qualified or not, if so, the subsequent operation is not needed, and otherwise, the polaroid is replaced again.
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