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Proceedings Paper

Photoluminescent liquid crystal displays and a new approach to large screen video applications
Author(s): William A. Crossland; I. D. Springle; R. D. King; P. A. Bayley; Anthony B. Davey; B. Needham
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Paper Abstract

Photoluminescent liquid crystal displays use a phosphor screen to separate internal light traversing a liquid crystal display (LCD) from light seen by the viewer. The internal light is narrow bandwidth UV and can be spatially directed. The diffuse phosphor emissions transform the angular viewing characteristics of conventional LCDs to the almost perfectly wide, uniform characteristics of a cathode ray tube. This type of display has the potential to exceed the power efficiency of current LCDs and can boost electro-optic performance in such a way as to give, for instance, enhanced multiplexing in passive matrix displays. The continuous phosphor screen and separate light paths enable truly seamless tiling for the production of large-screen direct-view displays. Here we briefly review photoluminescent LCD operation and describe the main design criteria. Three product-focused architectures are discussed and the current state of the art described for each.

Paper Details

Date Published: 17 March 2000
PDF: 14 pages
Proc. SPIE 3955, Liquid Crystal Materials, Devices, and Flat Panel Displays, (17 March 2000); doi: 10.1117/12.379968
Show Author Affiliations
William A. Crossland, Univ. of Cambridge and Screen Technology Ltd. (United Kingdom)
I. D. Springle, Screen Technology Ltd. (United Kingdom)
R. D. King, Screen Technology Ltd. (United Kingdom)
P. A. Bayley, Screen Technology Ltd. (United Kingdom)
Anthony B. Davey, Univ. of Cambridge and Screen Technology Ltd. (United Kingdom)
B. Needham, Screen Technology Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 3955:
Liquid Crystal Materials, Devices, and Flat Panel Displays
Ranganathan Shashidhar; Bruce Gnade, Editor(s)

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