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Optical Engineering

Fast-switching liquid-crystal-on-silicon microdisplay with framebuffer pixels and surface-mode optically compensated birefringence
Author(s): Sangrok Lee; Chongchang Mao; Kristina M. Johnson
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Paper Abstract

A 64×32 liquid-crystal-on-silicon (LCOS) backplane with a novel framebuffer pixel array has been designed and fabricated using the AMI Semiconductor 0.5-µm double-poly triple-metal CMOS process. The pixel circuit described herein increases the brightness significantly without sacrificing image contrast ratio. Characteristics of various liquid-crystal modes applicable to field sequential color displays have been investigated. The LCOS microdisplay, employing an optimized optically compensated birefringence mode, demonstrates fast response times (τOFF=0.3 ms, τON=1.2 ms) enabling a frame rate of 720 Hz, with a potentially high contrast ratio of up to 1600:1.

Paper Details

Date Published: 1 December 2006
PDF: 8 pages
Opt. Eng. 45(12) 127402 doi: 10.1117/1.2403122
Published in: Optical Engineering Volume 45, Issue 12
Show Author Affiliations
Sangrok Lee, Southeast Tech Inventures, Inc. (United States)
Chongchang Mao, Southeast Tech Inventures, Inc. (United States)
Kristina M. Johnson, Duke Univ. (United States)

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