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Proceedings Paper

Avionic gray-scale color head-down display
Author(s): David L. Jose; S. N. Lee; Roger G. Stewart; Alfred C. Ipri; Steven A. Lipp
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Paper Abstract

Recent display research has produced high quality flat panel displays by combining liquid crystal technology with arrays of thin film transistors (TFT's). The present high cost of these displays can be reduced by integrating the scanning electronics onto the glass plate along with the pixel switching transistors. This paper describes a 320,000 pixel self-scanned liquid crystal display (LCD) with CMOS-TFT gray-scale generators. Its "chip size" of over 100 x 200 mm makes this the largest wafer scale integrated circuit ever built and the integration of the scanning circuitry on the plate has reduced the number of input leads from 1200 to 44. This dramatically illustrates the potential of wafer scale integration techniques to improve reliability & reduce cost. Since this display IC is too large to fit within the field of even a 2:1 wafer stepper, the design was first preassembled on a CAD workstation and then partitioned into 1 6 smaller reticle segments. These segments were written onto a 7 1/4 inch reticle and the final assembly of the display was then completed by proper programming of a large area wafer stepper. This work was substantially funded under Wright Patterson Air Force Base contract # F33615 - 88 - C-1825.

Paper Details

Date Published: 1 October 1990
PDF: 7 pages
Proc. SPIE 1289, Cockpit Displays and Visual Simulation, (1 October 1990); doi: 10.1117/12.20943
Show Author Affiliations
David L. Jose, David Sarnoff Research Ctr. (United States)
S. N. Lee, David Sarnoff Research Ctr. (United States)
Roger G. Stewart, David Sarnoff Research Ctr. (United States)
Alfred C. Ipri, David Sarnoff Research Ctr. (United States)
Steven A. Lipp, David Sarnoff Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1289:
Cockpit Displays and Visual Simulation
Harry M. Assenheim; Herbert H. Bell, Editor(s)

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