Grayscale-memory spatial light modulator with polymer-dispersed phase-transition liquid crystal

Hideo Fujikake, Kuniharu Takizawa, Hiroshi Kikuchi, Takanori Fujh, Masahiro Kawakita, Minori Yokozawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A new storage-type spatial light modulator has been developed which uses a polymer-dispersed phase-transition liquid crystal film and a photoconductor for high-brightness projection displays. The liquid crystal film containing micrometer-sized chiral nematic liquid crystal domains subdivided by a unique honeycomb polymer network functions as a memory layer for an input image. The liquid crystal domains independently maintain the binary alignment states in the opaque (light-scattering) cholesteric phase or transparent nematic phase. Grayscale images can be displayed according to the spatial distribution of the bistable liquid crystal domains. The device exhibits rapid response of a few ms and a limiting resolution of 32 1p/mm. It has the advantages of high transmittance without polarizers and ease of fabrication due to the free-standing liquid crystal film.

Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalOptical Review
Issue number2
Publication statusPublished - 1996 Jan 1
Externally publishedYes


  • BiSiO photoconductive crystal
  • Cholesteric-nematic phase transition
  • Grayscale image memory
  • Liquid crystal polydomain structure
  • Polymer-dispersed liquid crystal
  • Spatial light modulator

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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