Fast-switching liquid-crystal-on-silicon microdisplay with framebuffer pixels and surface-mode optically compensated birefringence

Sangrok Lee; Chongchang Mao; Kristina M. Johnson

doi:10.1117/1.2403122

1 December 2006 Fast-switching liquid-crystal-on-silicon microdisplay with framebuffer pixels and surface-mode optically compensated birefringence

Sangrok Lee, Chongchang Mao, Kristina M. Johnson

Author Affiliations +

Optical Engineering, Vol. 45, Issue 12, 127402 (December 2006). https://doi.org/10.1117/1.2403122

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 (τ_OFF=0.3 ms, τ_ON=1.2 ms) enabling a frame rate of 720 Hz, with a potentially high contrast ratio of up to 1600:1.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Sangrok Lee, Chongchang Mao, and Kristina M. Johnson "Fast-switching liquid-crystal-on-silicon microdisplay with framebuffer pixels and surface-mode optically compensated birefringence," Optical Engineering 45(12), 127402 (1 December 2006). https://doi.org/10.1117/1.2403122

Published: 1 December 2006

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