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Proceedings Paper

One-transistor DRAM ferroelectric-liquid-crystal spatial light modulator
Author(s): Mark A. Handschy; Holden Chase; Lise K. Cotter; Jim D. Cunningham; Alan M. Pattee; Timothy J. Drabik; Stephen D. Gaalema
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Paper Abstract

We have made 128 X 128 and 256 X 256 spatial light modulators using active backplanes fabricated through a commodity silicon foundry and incorporating a thin ferroelectric liquid crystal light modulating layer at the backplane's surface by means of postprocessing of individual foundry die. These electrically addressed devices exhibit optical rise and fall times as short as 105 microsecond(s) , with contrast ratios in images as high as 100:1, and in zero-order diffracted light as high as 200:1. Total optical throughput to the zero-order diffracted beam exceeds 10% for the 256 X 256 devices and 17% for the 128 X 128 devices. Frame update times shorter than 100 microsecond(s) , corresponding to image information throughput of greater than 80 MBytes/s, were realized by employing pipelining techniques in conjunction with a wide digital input word.

Paper Details

Date Published: 1 March 1994
PDF: 7 pages
Proc. SPIE 2237, Optical Pattern Recognition V, (1 March 1994); doi: 10.1117/12.169449
Show Author Affiliations
Mark A. Handschy, Displaytech, Inc. (United States)
Holden Chase, Displaytech, Inc. (United States)
Lise K. Cotter, Displaytech, Inc. (United States)
Jim D. Cunningham, Displaytech, Inc. (United States)
Alan M. Pattee, Displaytech, Inc. (United States)
Timothy J. Drabik, Georgia Institute of Technology (United States)
Stephen D. Gaalema, Black Forest Engineering (United States)


Published in SPIE Proceedings Vol. 2237:
Optical Pattern Recognition V
David P. Casasent; Tien-Hsin Chao, Editor(s)

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