Liquid crystal display and its compensating feed through voltage method

The invention relates to liquid crystal display (LCD). Each pixel unit of the LCD includes a thin film transistor (TFT), a common electrode, and a pixel electrode. The pixel unit and the common electrode form a liquid crystal capacitance. TFT includes a grid, a source electrode, and a drain electrod...

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Bibliographische Detailangaben
1. Verfasser:	YIZHONG,SU XU
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION BASIC ELECTRIC ELEMENTS CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY EDUCATION ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SEMICONDUCTOR DEVICES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	The invention relates to liquid crystal display (LCD). Each pixel unit of the LCD includes a thin film transistor (TFT), a common electrode, and a pixel electrode. The pixel unit and the common electrode form a liquid crystal capacitance. TFT includes a grid, a source electrode, and a drain electrode connected to a pixel electrode. Voltage compensation unit including a comparator is connected to the above circuit. When voltage is loaded to the liquid crystal capacitance, the comparator compares potential of source electrode of TFT in time period from starting up time to closing time with potential of drain electrode after TFT shuts down, and then outputs signal of compensation voltage in order to compensate feed through voltage of TFT. The disclosed LCD can lower twinkling caused by feed through effect. The invention also discloses method for compensating feed through voltage of LCD.