Power source and LCD device and drive method thereof

A liquid crystal display and power supply technology, which can be used in static indicators, cathode ray tube indicators, televisions, etc., and can solve problems such as abnormal lighting

Inactive Publication Date: 2008-12-31
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The object of the present invention is to provide a kind of power supply, a kind of liquid crystal display and its driving method, wherein can make the moiré fringe that produces on the liquid crystal display screen when changing between dynamic image mode and static image mode, and lamp does not emit light. Normal problems can also be solved

Method used

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  • Power source and LCD device and drive method thereof
  • Power source and LCD device and drive method thereof
  • Power source and LCD device and drive method thereof

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Embodiment Construction

[0026] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] figure 1 is a view showing a liquid crystal display according to an embodiment of the present invention.

[0028] refer to figure 1 , the liquid crystal display according to the embodiment of the present invention comprises: a liquid crystal assembly, and this assembly comprises: a liquid crystal panel 400 injecting liquid crystal between the double-layer glasses; a driving circuit 200, 300 for driving the liquid crystal panel 400; a timing The controller 100 is used to generate control signals to control the driving circuits 200, 300; a backlight source including a lamp 500; a reflector 510; a lamp driving unit 900 (ie, a power supply device) for applying high voltage to the lamp 500 voltage to drive the lamp 500.

[0029] figure 2 is a block diagram of a liquid crystal display according to an embodiment of the present invention; ...

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Abstract

The invention provides a liquid crystal display, comprising: a timing controller; a control pole drive unit; a data drive unit; a liquid crystal display panel; a backlight; an inverter; a mode setting unit and an inverter control unit. The mode setting unit discriminates whether it is a dynamic image or a static image mode and provides a specific control signal to the inverter control unit according to the discriminated mode. The inverter control unit controls the inverter in a synchronous mode or an asynchronous mode by applying or blocking a timing signal to the inverter in response to a control signal from the mode setting unit. Preferably the timing signal is a gate selection signal CPV as a horizontal synchronizing signal. According to the present invention, the moiré phenomenon in the static picture mode can be eliminated by driving the lamp in synchronization with the horizontal synchronization signal, and the light emission of the lamp in the dynamic picture mode can be eliminated by driving the lamp at the frequency of the inverter itself. Unusual question.

Description

[0001] This application claims priority to Korean Patent Application No. 10-2003-0025239 filed with the Korean Intellectual Property Office on April 21, 2003, the disclosure of which is incorporated herein by reference. technical field [0002] The invention relates to a power supply, a liquid crystal display and a driving method thereof. Background technique [0003] Generally, a liquid crystal display includes a liquid crystal component, and the liquid crystal component includes a liquid crystal display panel, a data drive unit, a control electrode drive unit, and a backlight. [0004] Since the liquid crystal display panel itself of the liquid crystal display cannot emit light, it cannot be used in a place without light, so it is necessary to use a lamp as a backlight for emitting uniform light throughout the entire liquid crystal display panel from its back. [0005] Recently, a liquid crystal display is widely used as a combination of a television and a monitor in which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G02F1/133G09G3/20G09G3/34G09G5/00H04N5/66
CPCG09G3/3406G09G2320/02G09G2320/0261G09G2320/062G02F1/133
Inventor 罗东均
Owner SAMSUNG DISPLAY CO LTD
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