PHASE MODULATOR AND PHASE MODULATION METHOD

A phase modulator for reflecting incident light at a desired angle includes pixel circuits and reflection pixels provided at positions where column data lines and row scanning lines orthogonal and intersect each other, and liquid crystal layers where each refractive index to incident light is change...

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Bibliographische Detailangaben
Hauptverfasser:	OE, Kensei, NAGOYA, Takashi, IZAWA, Shunsuke
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:	A phase modulator for reflecting incident light at a desired angle includes pixel circuits and reflection pixels provided at positions where column data lines and row scanning lines orthogonal and intersect each other, and liquid crystal layers where each refractive index to incident light is changed by a driving voltage supplied from one pixel circuit. Each column data line outputs a control voltage which varies in a range up to a predetermined maximum voltage to corresponding pixel circuits. Each pixel circuit includes a charge pump for amplifying the control voltage. When the driving voltage supplied to a corresponding liquid crystal layer is not higher than the maximum voltage, the control voltage is outputted to the liquid crystal layer without amplifying. When the driving voltage supplied to the liquid crystal layer exceeds the maximum voltage, the control voltage is amplified by a charge pump and outputted to the liquid crystal layer.