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Clock generator, data driver, clock generating method for liquid crystal display device

A liquid crystal display and generator technology, applied in the direction of electric pulse generator circuits, static indicators, differential amplifiers to generate pulses, etc., can solve problems such as internal clock delay, abnormal screen images, etc., and achieve the effect of eliminating the problem of pulsating voltage

Inactive Publication Date: 2008-05-14
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in conventional LCD devices, ripples in the power supply voltage supplied to the data driver delay the internal clock, resulting in abnormal screen images displayed on the LCD panel

Method used

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  • Clock generator, data driver, clock generating method for liquid crystal display device
  • Clock generator, data driver, clock generating method for liquid crystal display device
  • Clock generator, data driver, clock generating method for liquid crystal display device

Examples

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Embodiment Construction

[0014] FIG. 1 is a block diagram illustrating an LCD device according to an exemplary embodiment of the present invention.

[0015] As shown in FIG. 1 , the LCD device includes an LCD panel 110 , a data driver 120 , a gate driver 130 , a timing controller 140 , and a power supply 150 .

[0016] The LCD panel 110 includes an upper substrate having color filters, a lower substrate having a thin film transistor ("TFT") array and facing the upper substrate, and liquid crystal filled between the upper and lower substrates. The lower substrate includes a plurality of liquid crystal cells C1c formed at intersections of the plurality of gate lines GL and the plurality of data lines DL, including TFTs that supply data signals to the liquid crystal cells C1c in response to gate driving signals. Each TFT includes a gate electrode connected to the gate line GL, a source electrode connected to the data line DL, and a drain electrode electrically connected to the pixel electrode of each liq...

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PUM

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Abstract

The invention provides a clock generator and a data driver for a liquid crystal display device, the clock generator includes a bias voltage supply receiving a power supply voltage and generating a bias voltage, an internal clock generator converting differential clock signals into an internal clock signal in response to the bias voltage, a bias line electrically connecting the bias voltage supply and the internal clock generator to supply the bias voltage to the internal clock generator, and a shield line shielding the bias line and receiving a voltage having a level identical with a level of the bias voltage.

Description

technical field [0001] The present invention relates to a liquid crystal display device, in particular to a clock pulse generator, a data driver and a clock pulse generating method of the liquid crystal display device. Background technique [0002] In general, liquid crystal display ("LCD") devices display images by controlling light transmission characteristics of liquid crystals using an electric field. A thin film transistor substrate and a color filter substrate having respective electrodes in an LCD device are constituted face-to-face with respect to a liquid crystal face between the two substrates. Liquid crystal molecules are excited by an electric field generated when a voltage is applied across the substrate. [0003] The LCD device includes an LCD panel having a plurality of liquid crystal cells formed at intersections of gate lines and data lines, a gate driver outputting gate signals to the gate lines, a data driver outputting data signals to the data lines, a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/133H03F3/45
CPCG09G3/3648G09G2330/06G09G2310/027G09G3/3611H03K5/2481H03K3/356G09G2330/02G09G2310/08G09G2300/0426G09G2370/08G09G3/36G09G3/20G02F1/133H03K3/023
Inventor 河在玟
Owner SAMSUNG ELECTRONICS CO LTD