Method and device for compensating field sequential backlight color

A compensation method and field sequential technology, applied in the field of backlight, can solve problems such as poor color expression and poor color saturation

Active Publication Date: 2012-11-14
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a field sequential backlight color compensation method and device, which

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  • Method and device for compensating field sequential backlight color
  • Method and device for compensating field sequential backlight color
  • Method and device for compensating field sequential backlight color

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[0034] The basic idea of ​​the present invention is: by compensating the brightness of a single light-emitting diode (including red light, green light, and blue light) of the backlight source and the screen image displayed on the liquid crystal screen, the color saturation of the field sequential backlight technology can be improved. In order to solve the problem of poor color expression and poor color saturation of field sequential technology.

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.

[0036] image 3 The implementation flowchart of the field sequential backlight color compensation method provided by the present invention, the method uses two compensation methods to improve the color saturation of the field sequential backlight technology, and the specific steps are as follows...

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Abstract

The invention discloses a method and a device for compensating a field sequential backlight color. The method and the device are used for solving the technical problems that the present common field sequential backlight technology is poor in color expressive force and inferior in color saturation. According to a twice compensating technology adopted by the invention, a first compensating calculation for an image signal is utilized to decompose an image signal into a screen image and a backlight luminance distribution, and then the screen image is compared with an original image, and finally the screen image is compensated for the second time. After the twice compensation is performed, the color saturation of the field sequential backlight technology is increased, the color expressive force is improved and the display effect of a frame is promoted.

Description

technical field [0001] The invention relates to a backlight source of a liquid crystal display, in particular to a color compensation method and device for a field sequential backlight source. Background technique [0002] The field sequential working principle of ordinary displays is to control the RGB three-color lights of the backlight and light them up sequentially in time order. Due to the persistence of vision of the human eye, color mixing in time is realized. figure 1 It is a working principle of a field sequential backlight display with a display effect of 60Hz, where the area marked ① is the deflection time of the pixel liquid crystal molecules, the blank area marked ② is the holding time of the pixel liquid crystal molecules, and the area marked ③ is the LED point of the backlight of the same color bright time. It should be noted that the deflection time of the liquid crystal pixel is not the same as the response time of the pixel. This is because the displayed i...

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Application Information

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IPC IPC(8): G09G3/36G09G5/02
Inventor 张丽蕾
Owner BOE TECH GRP CO LTD
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