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Proceedings Paper

Polysilicon Active-Matrix Liquid Crystal Displays For Cockpit Applications
Author(s): Brian W. Faughnan; Roger G. Stewart; Alfred C. Ipri; Wilber C. Stewart; W. Ronald Roach; Dora Plus; David L. Jose; Gregorz Kaganowicz
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Paper Abstract

Virtual image and cockpit applications require high resolution, high brightness, high contrast, full color displays with grayscale and which are also lightweight, small in size and have low power consumption. These requirements are well matched to active-matrix liquid-crystal flat-panel displays. In particular, polysilicon active-matrix displays with their high performance and capability for integrated scanners are ideal candidates to satisfy cockpit display requirements. A design analysis is presented for two types of avionic display, a 1-in x 1-in, 1000 x 1000 pixel helmet-mounted display, and a 8-in x 8-in, 1024 x 1024 sub-pixel color cockpit display. The analysis will show that the performance requirements for the display can be met with existing polysilicon device performance and current photolithography equipment. A screen brightness of 75 ft-L can be obtained for the cockpit display, using fluorescent lamp backlighting. Grayscale is obtained through on-plate digital circuitry. The feasibility of many of these concepts has been demonstrated in the design of a 192 x 192 active-matrix array with integrated data and select scanners. The design features of this array, as well as its performance will be presented. The display is capable of showing real-time color NTSC TV signals, with limited grayscale capability. The display operates with a 180 frame/sec refresh rate, while the shift registers operate at speeds up to 2 MHz.

Paper Details

Date Published: 21 March 1989
PDF: 12 pages
Proc. SPIE 1117, Display System Optics II, (21 March 1989); doi: 10.1117/12.960931
Show Author Affiliations
Brian W. Faughnan, David Sarnoff Research Center (United States)
Roger G. Stewart, David Sarnoff Research Center (United States)
Alfred C. Ipri, David Sarnoff Research Center (United States)
Wilber C. Stewart, David Sarnoff Research Center (United States)
W. Ronald Roach, David Sarnoff Research Center (United States)
Dora Plus, David Sarnoff Research Center (United States)
David L. Jose, David Sarnoff Research Center (United States)
Gregorz Kaganowicz, David Sarnoff Research Center (United States)


Published in SPIE Proceedings Vol. 1117:
Display System Optics II
Harry M. Assenheim, Editor(s)

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