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Proceedings Paper

Analog electro-optic modulators for ferroelectric-liquid-crystal/VLSI spatial light modulators
Author(s): Mark A. Handschy; Michael J. O'Callaghan; Michael D. Wand; Stephen D. Gaalema
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Paper Abstract

We report here on analog modulation effects in ferroelectric liquid crystal (FLC) materials and electrical drive schemes that are appropriate to FLC/VLSI spatial light modulations (SLMs). The deformable-helix ferroelectric (DHF) effect paired with fixed-charge drive can give sub- millisecond grey-scale response with VLSI-compatible drive voltages. New DHF materials with long-pitch nematic phases give superior alignment quality and contrast ratio. We present analog FLC driver circuits suitable for VLSI implementation, and show that providing adequate read/write isolation in optically addressed FLC/VLSI SLMs requires special care.

Paper Details

Date Published: 13 August 1993
PDF: 6 pages
Proc. SPIE 1911, Liquid Crystal Materials, Devices, and Applications II, (13 August 1993); doi: 10.1117/12.151216
Show Author Affiliations
Mark A. Handschy, Displaytech, Inc. (United States)
Michael J. O'Callaghan, Displaytech, Inc. (United States)
Michael D. Wand, Displaytech, Inc. (United States)
Stephen D. Gaalema, Black Forest Engineering (United States)


Published in SPIE Proceedings Vol. 1911:
Liquid Crystal Materials, Devices, and Applications II
Uzi Efron; Michael D. Wand, Editor(s)

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