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Liquid crystal display LED backlight global dimming control method

A technology of global dimming and control method, used in static indicators, televisions, instruments, etc., can solve the problems of high product cost, high research cost, long cycle, etc., and achieve the goal of reducing power consumption, improving display contrast, and reducing costs. Effect

Inactive Publication Date: 2018-11-13
广州市得胜光电科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a global dimming control method for LED backlights of liquid crystal displays, which has the ability to change the brightness of the backlight source accordingly with the change of the video signal, and at the same time compensate the pixels of the liquid crystal display, and can reduce power consumption, improve display contrast, The advantage of improving the display quality solves the problems of high research cost, long cycle, high product cost and difficulty in marketization of the existing local dimming technology

Method used

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  • Liquid crystal display LED backlight global dimming control method
  • Liquid crystal display LED backlight global dimming control method
  • Liquid crystal display LED backlight global dimming control method

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0038] refer to Figure 1-2 , a liquid crystal display LED backlight global dimming control method, the specific steps are as follows:

[0039] S1: Make a circuit board, and then connect it to the TV set,

[0040] S2: After the video signal enters the dimming circuit board, perform dimming calculation inside the circuit board;

[0041] S3: The dimming operation firstly determines the dimming brightness of the backlight; secondly, compensates the liquid cryst...

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Abstract

The invention discloses a liquid crystal display LED backlight global dimming control method. Specifically, the method comprises the following steps: S1, confirming backlight dimming brightness; and S2, compensating a liquid crystal pixel; firstly, confirming an S curve, and then confirming an adjusted sub-pixel brightness value. According to the method provided by the invention, an outputted signal is divided into two parts, so that LED driving and liquid crystal pixel compensating are achieved, and backlight source brightness can correspondingly change along with change of the video signal;and meanwhile, the liquid crystal pixel can be compensated, so that purposes of reducing power consumption, improving a display contrast and improving display picture quality.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a global dimming control method for LED backlight of liquid crystal display. Background technique [0002] After 30 years of development, Liquid Crystal Display (LCD) has become the mainstream technology of flat panel display. Liquid crystal molecules do not emit light by themselves, and need a backlight to illuminate the display area. At present, side-in LED LCD TVs have become the mainstream of the market, but there are two inherent disadvantages: (1) low contrast; (2) high power consumption. At present, many researchers use backlight dynamic dimming technology to improve the contrast of liquid crystal display and reduce energy consumption at the same time. According to the backlight brightness adjustment method, the dynamic dimming technology can be divided into global dimming and local dimming. However, Local Dimming technology (Local Dimming) has many short...

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Application Information

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IPC IPC(8): G09G3/34G09G3/36H04N5/57
Inventor 连建设
Owner 广州市得胜光电科技有限公司
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