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Backlight brightness control method and device, and display device

A technology of backlight brightness and control method, which is applied to static indicators, instruments, etc., can solve the problems of poor picture layering and low contrast between light and dark, so as to improve the contrast of light and dark, enhance the layering and contrast of images, and improve the display effect of the picture. Effect

Active Publication Date: 2017-01-04
HISENSE VISUAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a backlight brightness control method, device, and display device to solve the problems of low contrast between light and dark and poor layering of the screen in the backlight control scheme in the prior art

Method used

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  • Backlight brightness control method and device, and display device
  • Backlight brightness control method and device, and display device
  • Backlight brightness control method and device, and display device

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Embodiment Construction

[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0048] In the embodiment of the present invention, on the one hand, the backlight duty cycle of each backlight zone is determined according to the backlight value of each backlight zone; on the other hand, by determining the multiple backlight areas included in the current backlight module, and separately counting For the average backlight value of each backlight area, use the average backlight value obtained by statistics to find the corr...

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Abstract

The present invention discloses a backlight brightness control method and device, and a display device. The method mainly comprises: determining the backlight duty ratio of each backlight partition according to the backlight value of each backlight partition; determining a plurality of backlight areas included in the current backlight module; performing statistics of the average backlight value of each backlight area; searching a gain value corresponding to each backlight area according to the average backlight value of each backlight area and a preset gain curve; regulating the backlight current of corresponding backlight area according to the gain value; determining the gain backlight current value of each backlight area; and generating driving signals according to the gain backlight current value and the background duty ratio in each the backlight area to control the backlight brightness of each backlight partition in the backlight area so as to allow the backlight current values of different backlight areas to be different and effectively improve the image layering and the contrast of a frame in the display process.

Description

Technical field [0001] The present invention relates to the technical field of liquid crystal display, in particular to a backlight brightness control method, device and display device. Background technique [0002] At present, liquid crystal display devices are a key development target in the field of display technology. Since the liquid crystal display device is not an independent light-emitting product, it is necessary to provide a backlight for the liquid crystal display device by setting a backlight source. [0003] In the existing liquid crystal display device, the backlight is generally controlled by the backlight zone. That is, the backlight source is divided into multiple backlight partitions, the backlight value corresponding to each backlight partition is counted separately, and the duty cycle of each backlight partition is determined according to the corresponding backlight value, and then the backlight partition based on the backlight reference current value The duty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G3/34G09G3/36G09G2320/0247G09G2320/0686G09G2360/16G09G3/3426G09G2320/0233G09G2320/0238G09G2320/064G09G2320/066G09G2330/021
Inventor 张玉欣宋志成吴少伟
Owner HISENSE VISUAL TECH CO LTD
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