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Proceedings Paper

Ferroelectric liquid crystal spatial light modulators for projection display
Author(s): David B. Banas; Holden Chase; Jim D. Cunningham; Mark A. Handschy; Michael Meadows; David J. Ward
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Paper Abstract

We report prototype active-matrix liquid crystal spatial light modulators using ordinary silicon integrated-circuit backplanes and incorporating a fast-switching ferroelectric liquid crystal light modulating layer at the backplane's surface. Backplanes reported here utilize a fully- planarized three-metal CMOS process for improved optical throughput, contrast, and light tolerance. We report a 256 X 256 device with 15 micrometers SRAM pixels having 87% fill- factor, optical throughput of 36 - 45%, contrast ratio of 80:1, and electrical rise/fall times of 85 microsecond(s) . We also report DRAM arrays with pixel pitches of 7.5 micrometers and 5.7 micrometers , with fill factors of 75% and 69%, respectively.

Paper Details

Date Published: 29 March 1996
PDF: 4 pages
Proc. SPIE 2650, Projection Displays II, (29 March 1996); doi: 10.1117/12.237007
Show Author Affiliations
David B. Banas, Displaytech, Inc. (United States)
Holden Chase, Displaytech, Inc. (United States)
Jim D. Cunningham, Displaytech, Inc. (United States)
Mark A. Handschy, Displaytech, Inc. (United States)
Michael Meadows, Displaytech, Inc. (United States)
David J. Ward, Black Forest Engineering (United States)

Published in SPIE Proceedings Vol. 2650:
Projection Displays II
Ming Hsien Wu, Editor(s)

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