PHASE MODULATOR AND PHASE MODULATION METHOD

A phase modulator (101) for reflecting incident light (st) at a desired angle is provided with: a plurality of reflection pixels (20) and a plurality of pixel circuits (21) that are disposed at places where a plurality of column data lines (D1-Dm) and a plurality of row scanning lines (G1-Cn) inters...

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Bibliographische Detailangaben
Hauptverfasser:	IZAWA TOSHISUKE, NAGOYA TAKASHI, OE KENSEI
Format:	Patent
Sprache:	chi ; 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 (101) for reflecting incident light (st) at a desired angle is provided with: a plurality of reflection pixels (20) and a plurality of pixel circuits (21) that are disposed at places where a plurality of column data lines (D1-Dm) and a plurality of row scanning lines (G1-Cn) intersect with each other; and a liquid crystal (42) in which the refractive index with respect to incident light (st) changes in accordance with a drive voltage supplied by the pixel circuits (21). The column data lines (D1-Dm) output, to the pixel circuits (21), a control voltage that varies up to a prescribed maximum voltage (VLC). The pixel circuits (21) are each equipped with a charge pump (31) that is capable of amplifying the control voltage. In the case when the drive voltage supplied to the liquid crystal (42) is not higher than the maximum voltage, the control voltage is outputted, without being amplified, to the liquid crystal (42), whereas in the case when the drive voltage supplied to the liquid crystal (42)