HDTV projection display based on high-efficiency optically addressed PDLC light valves

Hiroshi Kikuchi, Takanori Fujii, Masahiro Kawakita, Hideo Fujikake, Tahito Aida, Kuniharu Takizawa

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


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 (i.e., various liquid crystal concentrations and ultraviolet exposure intensities). Films produced under optimum curing conditions (low concentration and high intensity) 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.

Original languageEnglish
Pages (from-to)180-188
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1999 Jan 1
Externally publishedYes
EventProceedings of the 1999 Projection Displays V - San Jose, CA, USA
Duration: 1999 Jan 261999 Jan 28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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