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Proceedings Paper

Improved lighting efficiency for active matrix liquid crystal displays
Author(s): Kevin L. Walsh; John S. Wyler
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Paper Abstract

Current AMLCD flat panels for military applications require intense backlighting to permit readability in full sunlit situations. This intense backlighting consumes a great deal of power, which limits their applications, reduces their reliability, and often necessitates cooling. One major factor aggravating this need for intense backlighting is the poor efficiency of the color filters. Not only do these filters have low transmittance, they are not spectrally pure which also results in poor color gamut. Smiths Industries suggests a new version of AMLCDs which does not have these lossy filters, but instead, utilizes a layer of green, red, and blue phosphors embedded within the AMLCD. These phosphors are energized by an ultraviolet backlight. This new technology could decrease the power consumption by a factor of four, while maintaining the same display luminance and contrast.

Paper Details

Date Published: 17 June 1994
PDF: 12 pages
Proc. SPIE 2219, Cockpit Displays, (17 June 1994); doi: 10.1117/12.177789
Show Author Affiliations
Kevin L. Walsh, Smiths Industries Aerospace-Defense Systems (United States)
John S. Wyler, Smiths Industries Civil-Defense Systems (United States)

Published in SPIE Proceedings Vol. 2219:
Cockpit Displays
Darrel G. Hopper, Editor(s)

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