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Method, device and system for compensating brightness of liquid crystal module

A liquid crystal module and compensation coefficient technology, which is used in the field of compensating the brightness of liquid crystal modules, can solve the problems of unevenness, zero cells cannot meet the design requirements, and the optical film is uneven, bright and dark, etc., and achieves the effect of improving product yield.

Active Publication Date: 2011-11-02
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to technical reasons or the failure of each zero unit to meet the design requirements during the design process and manufacturing process of the liquid crystal module, the final product has uneven brightness and darkness.
Including the problem of light leakage caused by the extrusion of the liquid crystal flat panel due to the fact that the production of structural parts does not meet the design precision requirements, the light shadow caused by the inability to reach the designed light mixing distance, and the uneven brightness and darkness caused by the unevenness of the optical film.
In order to completely solve this problem, it is possible to modify the design and improve the machining accuracy of the zero unit, but this solution wastes a lot of manpower, financial and material resources, and the actual effect is not ideal

Method used

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  • Method, device and system for compensating brightness of liquid crystal module

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Embodiment 1

[0021] figure 1 It is a flowchart of a method for compensating the brightness of a liquid crystal module according to an embodiment of the present invention. In step 101 , image acquisition is performed on a liquid crystal module with a predetermined image display, so as to obtain an acquired image of the liquid crystal module. In step 102, the collected image is compared with the standard image to find dark areas. In step 103 , the brightness difference information between each pixel in the dark area and the corresponding pixel in the standard image is calculated to obtain a compensation coefficient for each pixel in the dark area. In step 105, the compensation coefficient is stored in the display control circuit of the liquid crystal module. In step 105, the display control circuit compensates the backlight unit of the pixels in the dark area by using the compensation coefficient when driving the liquid crystal module to display.

Embodiment 2

[0023] figure 2 It is a block diagram of a device for compensating the brightness of a liquid crystal module according to an embodiment of the present invention. figure 2 The shown compensating device 200 includes an image acquisition unit 201, configured to perform image acquisition on a liquid crystal module with a predetermined image display, so as to obtain an acquired image of the liquid crystal module. The compensation device 200 also includes an image comparison unit 202, configured to compare the captured image with a standard image to find dark areas. The compensation device 200 also includes a compensation coefficient calculation unit 203, configured to calculate brightness difference information between each pixel in the dark area and the corresponding pixel in the standard image, so as to obtain a compensation coefficient for each pixel in the dark area and The compensation coefficient is stored in the display control circuit of the liquid crystal module. The c...

Embodiment 3

[0032] Figure 4 It is a block diagram of a system for compensating the brightness of a liquid crystal module according to an embodiment of the present invention. exist Figure 4 The compensation system shown includes a dark room 400 , a liquid crystal module display 401 , a camera 402 and a computer 403 . Camera 402 may be a camera with a charge-coupled element. The liquid crystal module display 402 includes a liquid crystal module 404 and a liquid crystal screen 405 . Wherein, the LCD module display 401 and the camera 402 are located in the darkroom 400, and the camera 404 can be fixed in the darkroom, and the LCD screen 405 is facing the camera 402, so that the camera 404 can just capture the LCD screen of the LCD module display 401 405 for the complete display image. The liquid crystal module 404 and the camera 402 are respectively connected to the computer 406, so that the camera 404 transmits the collected images to the computer 403 for processing, and the computer 4...

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Abstract

The invention discloses a method for compensating the brightness of a liquid crystal module. The method is characterized by comprising the following steps of: acquiring an image of the liquid crystal module to obtain an acquired image of the liquid crystal module; comparing the acquired image with a standard image to find out a dark space; calculating the compensation coefficient of each pixel inthe dark space; and storing the compensation coefficient in a display control circuit of the liquid crystal module to compensate a backlight unit corresponding to the pixel in the dark space.

Description

technical field [0001] The present invention generally relates to a liquid crystal module, and more particularly relates to a method, a device and a system for compensating the brightness of a liquid crystal module. Background technique [0002] The composition of the liquid crystal module is mainly composed of fluorescent tubes, light guide plates, polarizers, filter plates, glass substrates, alignment films, liquid crystal materials, thin-mode transistors, and so on. First of all, the liquid crystal module must first use the backlight to project light sources, and these light sources will first pass through a polarizer and then pass through the liquid crystal. At this time, the arrangement of the liquid crystal molecules will change the polarization angle of the light propagating through the liquid crystal, and then these light rays must pass through the front color filter film and another polarizer. The final light intensity and color can be controlled by changing the vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G02F1/13G09G3/34
CPCG09G5/02G09G3/34G09G3/36G02F1/133G02F1/13G09G3/006G09G3/3625G09G2320/0233G09G2320/0285G09G2320/0693G09G5/10
Inventor 宋志成乔明胜刘卫东
Owner HISENSE VISUAL TECH CO LTD
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