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Proceedings Paper

HDTV projection display based on high-efficiency optically addressed PDLC light valves
Author(s): Hiroshi Kikuchi; Takanori Fujii; Masahiro Kawakita; Hideo Fujikake; Tahito Aida; Kuniharu Takizawa
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Paper Abstract

The polymer-dispersed liquid crystal (PDLC) films of the optically addressed light valves in the high-definition television (HDTV) projection display described here can modulate unpolarized light with high spatial resolution as well as with a high optical efficiency based on the light scattering effect. A PDLC film suitable for use in HDTV projection display was developed by evaluating the microscopic spatial light modulation and polymer-network morphological properties of test films prepared using various curing conditions for photopolymerization-induced phase separation. Films produced under optimum curing conditions have a fine polymer-network structure appropriate for films used in the light valves of a HDTV projection display. Our prototype full-color HDTV projection display using three PDLC light valves provides a resolution of 850 TV lines, a brightness greater than 1800 ANSI lumens, and a maximum contrast ratio of 100:1.

Paper Details

Date Published: 20 May 1999
PDF: 9 pages
Proc. SPIE 3634, Projection Displays V, (20 May 1999); doi: 10.1117/12.349353
Show Author Affiliations
Hiroshi Kikuchi, NHK Science and Technical Research Labs. (Japan)
Takanori Fujii, NHK Science and Technical Research Labs. (Japan)
Masahiro Kawakita, NHK Science and Technical Research Labs. (Japan)
Hideo Fujikake, NHK Science and Technical Research Labs. (Japan)
Tahito Aida, NHK Science and Technical Research Labs. (Japan)
Kuniharu Takizawa, NHK Science and Technical Research Labs. (Japan)

Published in SPIE Proceedings Vol. 3634:
Projection Displays V
Ming Hsien Wu, Editor(s)

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