Backlight diffusion transmission parameter acquisition method and display control method and device

A technology for transmitting parameters and backlight sources, applied in optics, nonlinear optics, static indicators, etc., can solve the problems of inability to compensate for real changes in backlight, large differences in backlight brightness, and affect display effects, and achieve high contrast and image quality. Good, reducing the effect of image distortion

Active Publication Date: 2018-10-16
BOE TECH GRP CO LTD +1
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  • Claims
  • Application Information

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Problems solved by technology

However, after the backlight is dynamically adjusted, the brightness of each backlight varies greatly, and the LCD compensation image obtained in the related art cannot effectively compensate for the real change of the backlight, seriously affecting the final display effect

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  • Backlight diffusion transmission parameter acquisition method and display control method and device
  • Backlight diffusion transmission parameter acquisition method and display control method and device
  • Backlight diffusion transmission parameter acquisition method and display control method and device

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Embodiment Construction

[0079] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0080] The local dynamic dimming technology is mainly applied to 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 the related art, the brightness of the backlight is directly set according to the gray scale of the displayed image, and the LCD display compensation is performed according to the brightness of the backlight area at the pixel position....

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Abstract

The invention discloses a backlight diffusion transmission parameter acquisition method and a display control method and device based on the same. The method for acquiring the backlight diffusion transmission parameter includes the following steps of: selecting a plurality of backlight sources of different backlight areas, and measuring the light diffusion data thereof respectively; carrying out pre-processing on the data to obtain effective pixels; establishing a point diffusion function y=f (x) representing the relationship between the diffusion luminance y and the diffusion distance x; carrying out curve fitting according to the data corresponding to each effective pixel point to obtain the parameters in the point diffusion function, and using the point diffusion function as the backlight diffusion transmission parameter. The diffusion of the backlight source can be accurately modeled, and the brightness diffusion coefficient of the backlight source to any distance can be conveniently obtained. The method is used for accurately calculating the equivalent backlight of each pixel point, the corresponding LCD compensation image can be obtained and the same or even better display effect as the full backlight display is realized.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to a method for obtaining the diffusion transmission parameters of a backlight source and a display method and device using the method. Background technique [0002] The liquid crystal display device needs to be provided with a light source by a backlight module. 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 controller computing power and technological progress, a new idea of ​​local dynamic dimming (local dimming) has been proposed. By dimming the backlight corresponding to the darker area of ​​the displayed image, and correspondingly compensate the display signal of the LCD (liquid crystal display device) in the display control, the same display effect as the full-brightness backlight can be achieved. Thu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/34
CPCG09G3/3406G09G3/36G09G3/3426G09G2360/145G02F1/133601G02F1/133603G02F1/133606G02F1/133611
Inventor 姬治华史天阔张小牤孙一郎习艳会褚怡芳时凌云刘传军
Owner BOE TECH GRP CO LTD
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