LIQUID CRYSTAL DISPLAY ELEMENT AND DRIVING METHOD THEREOF

PROBLEM TO BE SOLVED: To allow image display of high quality by reducing image noise of so-called a misadjusted black level which is caused by distorting a ramp signal.SOLUTION: A ramp signal for positive polarity RAMP+ from a video switch for positive polarity omitted in Figure is supplied to a dat...

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Bibliographische Detailangaben
1. Verfasser:	KAWANAKA HIROYUKI
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 allow image display of high quality by reducing image noise of so-called a misadjusted black level which is caused by distorting a ramp signal.SOLUTION: A ramp signal for positive polarity RAMP+ from a video switch for positive polarity omitted in Figure is supplied to a data line for positive polarity Di+, and a ramp signal for negative polarity RAMP- from a video switch for negative polarity omitted in Figure is supplied to a data line for negative polarity Di-. A switch SWi is provided between the data line for positive polarity Di+ and the data line for negative polarity Di- and is turned on once at timing immediately before simultaneous turning-on of two video switches in an i-th column, whereby the switch SWi has a function of neutralizing positive voltage charge and negative voltage charge charged in the data line for positive polarity Di+ and the data line for negative polarity Di-. Within a short period between the end of a ramp signal period and the start of a next horizontal scanning period, the switch SWi is turned on to cause a short-circuit between the data line for positive polarity Di+ and the data line for negative polarity Di-.