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Dynamic light modulation display control method and device of backlight source

A display control method and dynamic dimming technology, which is applied to static indicators, instruments, etc., can solve the problems of affecting the display effect, large differences in the brightness of the backlight, and the inability to compensate for real changes in the backlight, so as to reduce image distortion and improve image quality. Good, high-contrast results

Active Publication Date: 2018-10-12
BOE TECH GRP CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

After the local dynamic adjustment of the backlight, the brightness of each backlight varies greatly, and the LCD compensation image obtained in the related art cannot effectively compensate the real change of the backlight, seriously affecting the final display effect

Method used

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  • Dynamic light modulation display control method and device of backlight source
  • Dynamic light modulation display control method and device of backlight source
  • Dynamic light modulation display control method and device of backlight source

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Embodiment Construction

[0092] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0093] The method and device of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0094] Local dimming technology is mainly used in direct-lit backlight dot-matrix display devices, and achieves the effect of reducing backlight power consumption and improving picture contrast by locally adjusting the brightness of each backlight area. In related technologies, the brightness of the backlight is directly set according to the gray scale of the displayed image, an...

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Abstract

The invention provides a dynamic light modulation display control method and device of a backlight source. The method comprises that backlight statistical values of different backlight areas are determined according to the grayscale of an image to be displayed; segmental displacement is carried out according to the backlight statistical values to determine backlight set values; a backlight sourcediffusion and transmission parameter of a backlight module is obtained; according to the backlight source diffusion and transmission parameter and the backlight set values of the different backlight areas, the equivalent backlight brightness of each pixel point is calculated; a corresponding compensation image is calculated according to the equivalent backlight brightness of the different pixel points; and the backlight module is controlled to lighten the backlight source according to the backlight set values, and a liquid crystal panel is controlled to display images according to compensationimages. Thus, the backlight brightness is adjusted properly, the equivalent backlight of each pixel point is calculated accurately, the corresponding LCD compensation image is obtained, and a displayeffect the same with or even better than full backlight display can be realized.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a dynamic dimming display control method of a backlight source and a display method and device using the method. Background technique [0002] A liquid crystal display device needs a backlight module to provide a light source. The traditional display method is to provide a uniform backlight, and control the brightness (gray scale) of the output image by controlling the deflection of the liquid crystal. In recent years, with the enhancement of the controller's computing capability and the advancement of technology, a new idea of ​​local dynamic dimming (local dimming) has been proposed. By dimming the backlight corresponding to the darker area of ​​the display image, and correspondingly compensating the display signal of the LCD (liquid crystal display device) in the display control, the same display effect as that of the full-brightness backlight can be achieved. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G3/342G09G3/3426G09G2320/062G09G2320/0646G09G2360/16G09G3/36G09G2330/021G09G2330/023
Inventor 姬治华史天阔张小牤孙一郎时凌云李文宇习艳会刘传军
Owner BOE TECH GRP CO LTD
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