Liquid crystal alignment effects on the photo-crosslinkable copolymer surfaces containing cholesteryl moiety

Jeoung Yeon Hwang, Yong Bae Kim, Dae Shik Seo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Pretilt angle generation for a nematic liquid crystal (NLC) and electro-optical (EO) performances of the vertical-alignment (VA)-liquid crystal display (LCD) photoaligned with obliquely polarized UV exposure on the three kinds of copoly (M4Ch-ChMA), copoly ((4-methacryloyloxy) chalcone - cholesteryl methacrylate) surfaces for homeotropic LC alignment were studied. The NLC pretilt angle of 81 was observed with UV exposure of 3 min on the photo-crosslinkable copolymer surface. The NLCs pretilt angle is attributable to increased chalcone with increasing the UV exposure time. Also, a good voltage-transmittance (V-T) curve and fast response time in the VA-LCD photoaligned with obliquely polarized UV exposure of 30 on the photo-crosslinkable copolymer surfaces can be achieved.

Original languageEnglish
Pages (from-to)115-125
Number of pages11
JournalFerroelectrics
Volume278
DOIs
Publication statusPublished - 2002 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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