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Backlight adjustment method and device and display device

A backlight adjustment and display technology, applied in static indicators, image data processing, instruments, etc., can solve the problems of contrast and display effect degradation

Active Publication Date: 2016-04-20
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a backlight adjustment method and device, and a display device, which solves the problem of decreased contrast and display effect when there is a small area of ​​white screen in the display screen, and improves the display effect of the screen

Method used

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  • Backlight adjustment method and device and display device
  • Backlight adjustment method and device and display device
  • Backlight adjustment method and device and display device

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Experimental program
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specific Embodiment

[0061] A specific embodiment is as follows: the display partition will display as Figure 4 As shown in the screen, it is assumed that the brightness of the black area in the screen is 0, such as pixel points P(1,2) and P(1,3), etc., and the brightness value of the white area is greater than the threshold value of the first preset brightness G2, such as pixel point P (1,1) and P(2,1), etc. The target memory adopts FIFO (FirstInFirstOut, first-in-first-out) memory. Stored in the FIFO are the position coordinate values ​​of all pixels that meet the requirements of the first preset brightness G2 in the display partition screen, such as Figure 5 shown. The number of pixels in the FIFO is counted and compared with the number threshold G2. After the number threshold G2 is met, the counting of the number of pixels in this area is stopped, and the brightness of the backlight is adjusted.

[0062] In order to avoid repeated retrieval of pixels, in this embodiment, when the retrieva...

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PUM

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Abstract

The invention discloses a backlight adjustment method and device and a display device, relates to the field of displaying, solves the problem that contrast and display effect decrease when a display picture has a small-area white picture, and improves the display effect of pictures. The backlight adjustment method comprises: S1, judging whether a white picture area in a picture to be displayed, corresponding to a display partition, meets preset conditions or not, each display partition corresponding to one backlight-adjustable area; S2, if a judgment result is meeting the preset conditions, increasing backlight brightness of the area corresponding to the display partition.

Description

technical field [0001] The invention relates to the display field, in particular to a backlight adjustment method and device, and a display device. Background technique [0002] Liquid crystal displays (LCDs) have been widely used in modern information equipment due to their thinness, lightness and energy saving. In order to reduce the overall power consumption of the liquid crystal display and improve the contrast ratio, backlight adjustment technology has been applied in the field of liquid crystal display. At present, the backlight adjustment of liquid crystal displays is usually realized through the following backlight adjustment algorithm: Divide the backlight LED into several areas, correspondingly, the screen is also divided into several areas, according to the display of the corresponding screen pixels in each area The brightness calculation obtains the backlight brightness that each backlight area needs to provide when displaying. By individually controlling the av...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G09G3/36
CPCG09G3/3406G09G3/36G09G3/3426G09G2320/0626G09G2360/16G09G2320/0646G09G2320/066G06T5/94G06T7/11G06T7/13
Inventor 褚怡芳周呈祺
Owner BOE TECH GRP CO LTD
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