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TV set backlight brightness control system and method and TV set

A technology of backlight brightness and control system, which is applied to components of TV systems, TVs, color TVs, etc., can solve the problems of service life impact, backlight shock, and brightening of LCD TV display brightness, so as to prolong service life and avoid problems such as The effect of impact, reducing damage to eyesight

Active Publication Date: 2007-02-14
HAIER GRP CORP +2
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the liquid crystal television in the prior art is turned on, a large voltage and a large current are suddenly applied to the backlight source of the liquid crystal screen, thereby causing an impact on the backlight source, so that its service life is inevitably affected, and it will cause damage to the liquid crystal screen. Adverse effects; in addition, this method will inevitably cause the display brightness of the LCD TV to change from dark to bright instantly, and will also cause damage to the user's vision
[0005] In addition, when the LCD TV of the prior art is turned off, it also suddenly becomes dark, which also has adverse effects.

Method used

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  • TV set backlight brightness control system and method and TV set
  • TV set backlight brightness control system and method and TV set
  • TV set backlight brightness control system and method and TV set

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Embodiment Construction

[0036] see figure 1 , is a block diagram of the television set of the present invention.

[0037] The TV includes a TV backlight brightness control system 100 , a user input unit 200 , a menu information control interface 300 , and a liquid crystal display panel 900 .

[0038] The user input unit 200 is used to generate various control commands corresponding to the user's operations, including power on and off commands, and control commands corresponding to operations through menu adjustments in a normal viewing state.

[0039] The user input unit 200 may be a remote controller for remote control, or a device such as a button set on the TV.

[0040] The menu information control interface 300 is mainly used to realize the transmission of menu adjustment information in a normal viewing state.

[0041] The television backlight brightness control system 100 is used to control the slow change of the brightness of the backlight 910 of the liquid crystal display panel 900 when the ...

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Abstract

The invention discloses a control system for regulating the backlight-brightness of the display-panel in television including: a television programmable control center used for outputting the pulse width modulation (PWM) to regulate the backlight-brightness, a demodulation circuit connected with the programmable control center to amplify and convert the PWM and output a gradually changing voltage signal to the backlight of the described display panel for gradually changing its brightness.

Description

technical field [0001] The invention relates to a technology for adjusting the backlight brightness of a TV set, in particular to a TV backlight brightness control system and method and a TV set using the system. Background technique [0002] Along with the development of society and science and technology, television sets have been popularized day by day, occupying a position that cannot be ignored in people's daily life, making people's life more colorful. [0003] At present, LCD TVs using liquid crystal display technology have also appeared on the market, and because LCD TVs have their own unique advantages compared to traditional TVs, they are expected to become mainstream products in the future. For LCD TVs, since the LCD screen itself cannot actively emit light, it is necessary to use a backlight source for lighting. [0004] When the liquid crystal television in the prior art is turned on, a large voltage and a large current are suddenly applied to the backlight sou...

Claims

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Application Information

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IPC IPC(8): H04N5/57
Inventor 刘强翟翌立王中振黄俊杰
Owner HAIER GRP CORP
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