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Liquid crystal display brightness control method and device and liquid crystal display equipment

A brightness control, liquid crystal display technology, applied in static indicators, cathode ray tube indicators, instruments, etc., can solve the problem of limited space for improving the contrast effect of the picture

Active Publication Date: 2015-11-11
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a liquid crystal display brightness control method, device and liquid crystal display equipment, which are used to solve the problem of limited space for improving the effect of picture contrast in the prior art

Method used

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  • Liquid crystal display brightness control method and device and liquid crystal display equipment
  • Liquid crystal display brightness control method and device and liquid crystal display equipment
  • Liquid crystal display brightness control method and device and liquid crystal display equipment

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0034] In order to improve the image quality effect of the dynamic contrast ratio of the liquid crystal display device, the partition dynamic backlight modulation technology is adopted, and the entire backlight matrix is ​​divided into multiple backlight partitions in the row direction and the column direction, and the backlight sources contained in each backlight partition can be The brightness is driven and controlled independently. It should be noted that, ideally, each backlight partition can illuminate its backlight area independently, but in practice, the brightness of adjacent backlights will have a certain impact. Collect the image gray scale brightness...

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Abstract

The invention provides a liquid crystal display brightness control method and device and liquid crystal display equipment, and belongs to the technical field of liquid crystal display. An image gray-scale value in a partition image data block is confirmed based on the preset rules according to the received image signals, and a partition backlight value corresponding to the partition image data is pre-extracted according to the image gray-scale value; the preset backlight value gain coefficient and the pre-extracted partition backlight value are multiplied so that the partition backlight value of the backlight partition after gain is obtained, wherein the preset backlight value gain coefficient is greater than 1; and each partition backlight value after gain is mapped to the driving circuit of a backlight source in the corresponding backlight partition so as to control backlight source brightness of the corresponding backlight partition through driving. The contrast image quality effect of a liquid crystal display frame can be improved.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular relates to a liquid crystal display brightness control method and device and liquid crystal display equipment. Background technique [0002] A Liquid Crystal Display (LCD for short) usually uses a dynamic backlight modulation technology to control the brightness of the backlight, which can achieve image quality effects such as energy saving and improved display contrast. Such as figure 1 It is a schematic structural diagram of dynamic backlight modulation technology in liquid crystal display in the prior art. The liquid crystal display device includes an image processing unit that receives an input image signal and acquires backlight data according to the grayscale brightness of the image signal. On the one hand, according to the specifications of the predetermined display panel The format of the image signal is converted and output to the timing controller (TCON...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G09G5/10
CPCG09G3/3426G09G3/3648G09G2320/0238G09G2320/0285G09G2320/064G09G2320/0646G09G2320/066G09G2330/021G09G2360/16
Inventor 张玉欣黄顺明宋志成
Owner HISENSE VISUAL TECH CO LTD
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