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Proceedings Paper

Development of a 2560x2048 AMLCD display for HMD applications
Author(s): Ollie C. Woodard Sr.; Frederick P. Herrmann; H. Eric Kim; Frank P. Cuomo
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Paper Abstract

A 2100 line-per-inch, active matrix liquid crystal display technology has been developed. Functional displays were produced and demonstrated with contrast ratios of up to 50:1. The achievement of a 12 micrometers pixel pitch results in only a 1.5 inch diagonal for the 2560 by 2048 pixel array of 5.24 million pixels. Display drive electronics integrated into the periphery areas around the pixel array include row addressing, column select/video data loading, and clock circuits. External electronics requirements are reduced and the display connector contains only video, clock and power lines. The active matrix TFT's and peripheral circuits contain over 5.3 million transistors, the complexity of a large integrated circuit. Six display circuits were fabricated on each 6 inch Silicon-On-Insulator wafers using CMOS IC processes. The single crystal silicon circuits readily achieve the high speeds required to drive these large pixel arrays at a 60 Hz frame rate. The thin x-Si layer containing the display circuits was transferred from the silicon wafer to glass in the manufacturing process. This approach leverages mature wafer-based IC processing for display manufacturing.

Paper Details

Date Published: 11 August 1998
PDF: 11 pages
Proc. SPIE 3362, Helmet- and Head-Mounted Displays III, (11 August 1998); doi: 10.1117/12.317444
Show Author Affiliations
Ollie C. Woodard Sr., Kopin Corp. (United States)
Frederick P. Herrmann, Kopin Corp. (United States)
H. Eric Kim, David Sarnoff Research Ctr. (United States)
Frank P. Cuomo, David Sarnoff Research Ctr. (United States)

Published in SPIE Proceedings Vol. 3362:
Helmet- and Head-Mounted Displays III
Ronald J. Lewandowski; Loran A. Haworth; Henry J. Girolamo, Editor(s)

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