EO characteristics for a photoaligned VA 1/4 π cell on a photopolymer layer

Jeoung Yeon Hwang, Yong Je Jeon, Yong Min Jo, Dae Shik Seo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The generation of a liquid-crystal (LC) tilt angle on a copolymer with chalconyl and cholesteryl moiety characteristics was performed, and the electro-optical (EO) performance of the photoaligned vertical-alignment (VA) 1/4 π cell by polarized UV exposure on a homeotropic photopolymer surfaces was studied. The LC tilt angles decreased as UV exposures time increased on the copolymer surfaces. A tilt angle of 87° in NLC was observed with an UV exposure of 3 min on the photoalignment-2 surface. The LC tilt angle is attributed to increased chalcone moiety with increasing UV exposure time. Excellent voltage-transmittance (V-T) curves of the photoaligned VA 1/4 π cell by polarized UV exposure on the photopolymer surface for 3 min containing a cholesteryl moiety of 8% were obtained. The V-T and response-time characteristics can be improved by the presence of a cholesteryl moiety in the photopolymer.

Original languageEnglish
Pages (from-to)351-356
Number of pages6
JournalJournal of the Society for Information Display
Volume10
Issue number4 SPEC ISS.
DOIs
Publication statusPublished - 2002 Dec 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'EO characteristics for a photoaligned VA 1/4 π cell on a photopolymer layer'. Together they form a unique fingerprint.

  • Cite this