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A backlight brightness control method, 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: 2019-07-26
HISENSE VISUAL TECH CO LTD
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  • Summary
  • 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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  • A backlight brightness control method, device and display device
  • A backlight brightness control method, device and display device
  • A backlight brightness control method, device and display device

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Embodiment Construction

[0047] In order to make the purpose, 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 some 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 persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] In the embodiment of the present invention, on the one hand, the backlight duty ratio of each backlight partition is determined according to the backlight value of each backlight partition; For the average backlight value of each backlight area, the average backlight value obtained by statistics is used to find the corresponding gain value, and the gain value is multiplied by the current backlight current value of the correspondin...

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Abstract

The invention discloses a backlight brightness control method, device and display equipment. The main contents include: determining the backlight duty cycle of each backlight partition according to the backlight value of each backlight partition, and determining multiple backlights included in the current backlight module. area, and count the average backlight value of each backlight area. Based on the average backlight value of each backlight area and the preset gain curve, find the gain value corresponding to each backlight area, and adjust the backlight of the corresponding backlight area based on the gain value. The current value is adjusted to determine the gain backlight current value in each backlight area, and a driving signal is generated based on the gain backlight current value of the backlight area and the backlight duty cycle of each backlight partition in the backlight area to control the backlight area. The backlight brightness of each backlight partition makes the backlight current values ​​of different backlight areas different, which can more effectively improve the image layering and contrast of the picture during the display process.

Description

technical field [0001] The 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] Currently, liquid crystal display devices are key development objects in the field of display technology. Since the liquid crystal display device is not a self-luminous product, it is necessary to provide a backlight for the liquid crystal display device by setting a backlight source. [0003] In an existing liquid crystal display device, the backlight is generally controlled by means of partitioning the backlight. 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 Patents(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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