Liquid crystal display device and backlight control method thereof

A liquid crystal display device and backlight control technology, which is applied to static indicators, instruments, etc., can solve problems such as reducing backlight power consumption, and achieve the effect of reducing backlight power consumption.

Active Publication Date: 2015-11-11
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, increasing the grayscale brightness of the image by 30% makes the image brighter, and reducing the backlight brightness of the LCD screen by 30% makes the image darker, so that the brightness of the image before and after processing can be kept basically the same, but the 30% backlight power consumption

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  • Liquid crystal display device and backlight control method thereof
  • Liquid crystal display device and backlight control method thereof
  • Liquid crystal display device and backlight control method thereof

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some examples of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0018] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the related structures and / or processing steps are omitted. Other details not relevant to the invention.

[0019] This embodiment provides a liquid crystal display device, in which a new backlight control method is adopted, whi...

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PUM

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Abstract

The invention discloses a backlight control method for liquid crystal display devices. The method comprises the following steps: a brightness control unit receives an image signal, increases the gray-scale brightness of the image signal according to a first proportion, generates a corresponding driving voltage through control, and inputs the driving voltage to a backlight module to reduce the backlight brightness according to the first proportion; and the brightness control unit further receives a frame control time sequence signal and/or line control time sequence signal, and the brightness control unit stops outputting the driving voltage to the backlight module within a first blanking time and/or a second blanking time, wherein the first blanking time refers to the interval time between the end of a nth frame of image signals and the start of a (n+1)th frame of image signals, the second blanking time refers to the interval time between the end of a mth line of signals and the start of a (m+1)th line of signals, and m and n are integers greater than 1. The invention further discloses a liquid crystal display device adopting the backlight control method.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display device and a backlight control method thereof. Background technique [0002] Among the various mobile phones and flat-panel display devices popular in today's society, the part with the largest power consumption is the backlight part, and the trend of thinner and lighter mobile phones and flat-panel display devices determines that the variability of the size and capacity of the battery is extremely limited. In order to solve the problem of limited battery capacity and want to reduce power consumption, Content Adaptive Brightness Control (CABC) technology is usually used at present. CABC technology is a backlight power saving mainly used for Liquid Crystal Display (LCD). technology. [0003] Specifically, the CABC technology can adjust the relationship between the grayscale brightness of the image and the brightness of the screen backlight according to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
Inventor 邢振周左清成谭小平
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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