Drive device and method for driving liquid crystal display

The invention discloses a driving device used for driving a liquid crystal display, which comprises a voltage controlling unit, an arithmetic unit, a resistance unit and a voltage selecting unit. The arithmetic unit comprises two groups of buffers, and the buffers include a plurality of operational...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI ZHIYU, LUO YOULONG, RAO YONGNIAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING AMPLIFIERS ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION BASIC ELECTRONIC CIRCUITRY 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 ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	The invention discloses a driving device used for driving a liquid crystal display, which comprises a voltage controlling unit, an arithmetic unit, a resistance unit and a voltage selecting unit. The arithmetic unit comprises two groups of buffers, and the buffers include a plurality of operational amplifiers and a negative feedback circuit; the two groups of buffers respectively and selectively accept the positive-polarity voltage and the negative-polarity voltage; the positive-polarity component voltage and the negative-polarity component voltage of the voltage selecting unit are provided by the arithmetic unit and the resistance unit; and the voltage selecting unit selectively provides the positive-polarity component voltage and the negative-polarity component voltage to the pixels of the liquid crystal display. Therefore, each pixel is supplied with the required positive-polarity component voltage and negative-polarity component voltage only by one group of the buffers.