LIQUID CRYSTAL DISPLAY DEVICE AND ITS DRIVE METHOD

PROBLEM TO BE SOLVED: To solve problems that a MVA (multidomain vertical alignment) liquid crystal panel is slow in a response speed when the driving voltage is switched from a black state at about 1V driving voltage to a low brightness halftone state at about 2 to 3 V driving voltage. SOLUTION: Whe...

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Hauptverfasser:	NAKAMURA KIMIAKI, KOIKE YOSHIRO, TAKEDA ARIHIRO, OMURO KATSUFUMI, SENDA HIDEO
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION 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 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:	PROBLEM TO BE SOLVED: To solve problems that a MVA (multidomain vertical alignment) liquid crystal panel is slow in a response speed when the driving voltage is switched from a black state at about 1V driving voltage to a low brightness halftone state at about 2 to 3 V driving voltage. SOLUTION: When a liquid crystal pixel corresponding to a pixel electrode is changed from first transmittance to second transmittance higher than the first transmittance in a liquid crystal display device which drives a MVA liquid crystal panel, a drive voltage greater than a first target drive voltage corresponding to the second transmittance is applied on the pixel electrode in a first frame period to change into the second transmittance, and the first target display voltage is applied from a second frame period. By this method, even when any switching is performed from black display to low brightness halftone display, from black display to high brightness halftone display or from black display to white display, modes can be switched while shortening the response time and without generating an overshoot. COPYRIGHT: (C)2006,JPO&NCIPI