CN108922481B - Demura implementation method based on side viewing angle of liquid crystal display television - Google Patents
Demura implementation method based on side viewing angle of liquid crystal display television Download PDFInfo
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- CN108922481B CN108922481B CN201810595376.XA CN201810595376A CN108922481B CN 108922481 B CN108922481 B CN 108922481B CN 201810595376 A CN201810595376 A CN 201810595376A CN 108922481 B CN108922481 B CN 108922481B
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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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
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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
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
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- Liquid Crystal Display Device Control (AREA)
Abstract
The invention provides a demura implementation method based on a side viewing angle of a liquid crystal display television, which comprises the following steps: 1) acquiring mura information of different visual angles; 2) according to the mura information of different viewing angles, generating a demura compensation look-up table (LUT) under different viewing angles; 3) and improving the demura effect of different visual angles according to the demura compensation look-up table LUT under different visual angles. The method improves the serious mura phenomenon of the liquid crystal television from a side view, and is suitable for the compensation of the brightness mura and the compensation of the chroma mura.
Description
Technical Field
The invention relates to the technical field of display, in particular to a demura implementation method based on a side viewing angle of a liquid crystal display television.
Background
The liquid crystal television has the advantages of small volume, low power consumption, high resolution and the like, and is widely applied to daily life. However, the manufacturing process is complicated, and various display defects, such as color unevenness caused by CF abnormality, display luminance abnormality caused by backlight module luminance unevenness, and the like, are inevitably generated during the manufacturing process, and these display defects are referred to as mura phenomenon. These factors bring visual discomfort and seriously affect the quality of the liquid crystal panel. To improve mura defects, de-mura technology is widely used. The de-mura technology improves the display uniformity of the liquid crystal television by changing the gray scale of a display picture according to the brightness and chromaticity shift conditions of different areas of the liquid crystal television.
The prior art realizes that: current demura scheme is all gone on based on the front view, and the panel through demura processing, from the front view, the mura phenomenon obtains to a great extent to improve, but from the side view through the panel of correcting, still can see comparatively serious mura, this very big influence the whole effect of demura.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for realizing demura based on the side viewing angle of a liquid crystal television, which improves the serious mura phenomenon existing in the side viewing angle of the liquid crystal television and is suitable for the compensation of brightness mura and the compensation of chromaticity mura.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a demura implementation method based on a side viewing angle of a liquid crystal display television comprises the following steps:
1) acquiring mura information of different visual angles;
2) according to the mura information of different viewing angles, generating a demura compensation look-up table (LUT) under different viewing angles;
3) and improving the demura effect of different visual angles according to the demura compensation look-up table LUT under different visual angles.
Mura information of different visual angles is collected simultaneously through a plurality of sets of optical systems, and the number of the optical systems depends on the fineness of the required visual angles.
And (3) acquiring the mura information of different visual angles in a time-sharing manner through a set of optical system or optical systems with the number less than that of the compensation visual angles.
The optical system moves on the two-dimensional moving guide rail, and mura information at different visual angles is collected at different moments.
According to the demura compensation look-up table LUT under different visual angles, the demura effect to different visual angles is improved, specifically includes:
adopting compensation LUTs of different visual angles in a time-sharing mode, and if the LUTs of M visual angles are collected and generated in total, using a demura LUT of a 1 st visual angle when the Frame is N + 1; frame N +2, demura LUT for view 2; .., Frame N + M, demura LUT for mth view.
According to the demura compensation look-up table LUT under different visual angles, the demura effect to different visual angles is improved, specifically includes:
adopting compensation LUTs of different visual angles in different areas, and if the LUTs of M visual angles are collected and generated in total, adopting a demura LUT of a 1 st visual angle for the N +1 th pixel/sub-pixel of the display; the (N + 2) th pixel/sub-pixel adopts demura LUT of the 2 nd view angle; .., the N + M th pixel/sub-pixel employs a demura LUT for the M view angle.
According to the demura compensation look-up table LUT under different visual angles, the demura effect to different visual angles is improved, specifically includes:
time-sharing + regionally adopting compensation LUTs of different visual angles, if the LUTs of M visual angles are collected and generated in total, then in frame N +1, pixel/sub-pixel alternately adopts demura LUTs of visual angles 1, 2. frame N +2, pixel/sub-pixel rotation takes the demura LUT of view 2,. M, 1; frame N + M, pixel/sub-pixel rotation takes place using the demura LUT of view M,1, 2.
According to the demura compensation look-up table LUT under different visual angles, the demura effect to different visual angles is improved, specifically includes:
and mixing the demura LUTs of the M visual angles by using an algorithm to obtain a balanced demura LUT, wherein the mixing algorithm comprises the following modes:
demura LUT ═ viewing angle 1demura LUT + M viewing angle 2demura LUT (M-1) + viewing angle 3demura LUT (M-2) +. + viewing angle M demura LUT 1)/((1+ M) × M/2).
According to the demura LUT under different visual angles, improve the demura effect of different visual angles, include specifically: and acquiring the visual angle of the current audience by using the external camera, and dynamically selecting a demura LUT of the visual angle.
The invention provides a demura implementation method based on the side viewing angle of a liquid crystal display television, and provides a demura algorithm for acquiring demura of different viewing angles and solving the problem of the mura of different viewing angles. The method of the invention can be suitable for the compensation of brightness mura and the compensation of color spot mura.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of an embodiment of a system for acquiring demura at different viewing angles according to the present invention;
FIG. 2 is a schematic view of a second embodiment of a system for acquiring demura at different viewing angles according to the present invention;
FIG. 3 is a third schematic view of an embodiment of a system for acquiring demura with different viewing angles according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Fig. 1-3 illustrate three embodiments of the system for acquiring demura with different viewing angles according to the present invention.
Fig. 1 is a schematic diagram of an embodiment of the present invention, in which mura information of different viewing angles of an lcd tv 1 is collected simultaneously by a plurality of sets of optical systems 2, and the number of the optical systems 2 depends on the fineness of the viewing angle to be compensated. The master control PC 3 is used for controlling the display of the liquid crystal screen, acquiring mura data, generating and writing the demura LUT.
Fig. 2 is a schematic view of an embodiment of the present invention, in which a set of or less than the number of compensated viewing angles of the optical systems 2 is used to collect mura information of different viewing angles of the lcd tv 1 in a time-sharing manner, and the optical systems 2 are located on the two-dimensional moving guide rail 4, move along the guide rail, and collect mura information of different viewing angles at different times. The master control PC 3 is used for controlling the display of the liquid crystal screen, controlling a guide rail, acquiring mura data, generating and writing the demura LUT
Fig. 3 is a schematic diagram of an embodiment of the invention, in which a set of optical system 2 plus viewing angle processing algorithm is used to obtain mura information of different viewing angles of the lcd tv 1. The master PC 3 is used for controlling the display of the liquid crystal screen, acquiring mura data, estimating side view angle mura data, generating and writing the demura LUT.
The generation of the Demura LUT in the present invention can be generated using known general means.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (5)
1. A demura implementation method based on a side viewing angle of a liquid crystal display television is characterized by comprising the following steps:
1) acquiring mura information of different visual angles;
2) according to the mura information of different viewing angles, generating a demura compensation look-up table (LUT) under different viewing angles;
3) according to the demura compensation look-up table LUT under different visual angles, the demura effects of different visual angles are improved;
according to the demura compensation look-up table LUT under different visual angles, the demura effect to different visual angles is improved, specifically includes:
adopting compensation LUTs of different visual angles in a time-sharing mode, and if the LUTs of M visual angles are collected and generated in total, using a demura LUT of a 1 st visual angle when the Frame is N + 1; frame N +2, demura LUT for view 2; .., Frame N + M, demura LUT for mth view;
adopting compensation LUTs of different visual angles in different areas, and if the LUTs of M visual angles are collected and generated in total, adopting a demura LUT of a 1 st visual angle for the N +1 th pixel/sub-pixel of the display; the (N + 2) th pixel/sub-pixel adopts demura LUT of the 2 nd view angle; .., the N + M pixels/sub-pixels use the demura LUT for the M view;
time-sharing + regionally adopting compensation LUTs of different visual angles, if the LUTs of M visual angles are collected and generated in total, then when the frame is N +1, pixels/sub-pixels alternately adopt demura LUTs of visual angles 1, 2. frame N +2, pixel/sub-pixel rotation takes the demura LUT of view 2,. M, 1; frame N + M, pixel/sub-pixel rotation takes place using demura LUT of view M,1, 2., M-1;
and mixing the demura LUTs of the M visual angles by using an algorithm to obtain a balanced demura LUT, wherein the mixing algorithm comprises the following modes:
demura LUT ═ viewing angle 1demura LUT + M viewing angle 2demura LUT (M-1) + viewing angle 3demura LUT (M-2) +. + viewing angle M demura LUT 1)/((1+ M) × M/2).
2. The method as claimed in claim 1, wherein the mura information of different viewing angles is collected simultaneously by multiple sets of optical systems, and the number of optical systems depends on the fineness of the desired viewing angle.
3. The method as claimed in claim 2, wherein the mura information of different viewing angles is time-divisionally collected by one set or less than the number of compensated viewing angles of the optical system.
4. The method as claimed in claim 3, wherein the optical system moves on the two-dimensional moving guide rail to collect mura information at different viewing angles at different times.
5. The method for realizing demura at a side viewing angle of a liquid crystal display television according to claim 1, wherein the improvement of demura effects at different viewing angles according to demura LUT at different viewing angles comprises:
and acquiring the visual angle of the current audience by using the external camera, and dynamically selecting a demura LUT of the visual angle.
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| CN110689843B (en) * | 2019-08-19 | 2021-10-12 | 昆山国显光电有限公司 | Demura system and method and electronic equipment |
| CN111491070B (en) * | 2020-06-29 | 2020-10-23 | 武汉精立电子技术有限公司 | Display panel multi-view angle equalization Demura method and terminal equipment |
| CN113450703A (en) * | 2020-09-24 | 2021-09-28 | 重庆康佳光电技术研究院有限公司 | Display screen compensation method and device, computer readable storage medium and electronic equipment |
| CN112767891B (en) * | 2021-01-20 | 2022-07-12 | Tcl华星光电技术有限公司 | Mura compensation method, display panel and display device |
| CN115223511A (en) * | 2021-04-21 | 2022-10-21 | 海信视像科技股份有限公司 | Display adjustment method, device, equipment and storage medium |
| CN112885289B (en) * | 2021-04-28 | 2021-08-24 | 武汉精测电子集团股份有限公司 | Display screen calibration method and device |
| CN113327532B (en) * | 2021-04-28 | 2022-10-11 | 华兴源创(成都)科技有限公司 | Color cast compensation method and device of display panel, computer equipment and medium |
| CN115312009B (en) * | 2021-05-07 | 2024-05-31 | 海信视像科技股份有限公司 | Image display method and device |
| CN113362751B (en) * | 2021-06-01 | 2023-11-28 | 深圳市华星光电半导体显示技术有限公司 | Data compensation method and data compensation device of display panel |
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| CN100565630C (en) * | 2006-01-04 | 2009-12-02 | 台湾薄膜电晶体液晶显示器产业协会 | Display multiangle measurement system and method |
| US20130194170A1 (en) * | 2010-10-19 | 2013-08-01 | Sharp Kabushiki Kaisha | Display device |
| CN104297960B (en) * | 2014-10-21 | 2017-10-31 | 天津三星电子有限公司 | A kind of picture display process and device |
| CN104599650A (en) * | 2015-01-06 | 2015-05-06 | 宏祐图像科技(上海)有限公司 | Intelligent de-Mura modulation method without losing video image brightness |
| CN105374324B (en) * | 2015-12-21 | 2018-02-23 | 深圳市华星光电技术有限公司 | The compensation method of brightness, system and display panel in Dumura systems |
| CN105590604B (en) * | 2016-03-09 | 2018-03-30 | 深圳市华星光电技术有限公司 | Mura phenomenon compensation methodes |
| CN106770362B (en) * | 2016-12-27 | 2019-12-31 | 武汉精测电子集团股份有限公司 | Macroscopic defect detection device and method based on AOI |
| CN107240384B (en) * | 2017-08-11 | 2019-04-05 | 芯颖科技有限公司 | Display brightness compensation method and device |
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