Alignment properties and EO performances of flexible TN-LCD using in-situ photoalignment method with the polymer film

Jeoung Yeon Hwang, Ki Hyung Nam, Dae Shik Seo

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have investigated the generation of pretilt angle for a nematic liquid crystal (NLC) alignment with in-situ photoalignment method on polyimide (PI) surfaces using polymer films. Especially, we studied in-situ photoalignment changing heating temperature from 50°C to 120°C on the polymer film. The LC aligning capabilities and pretilt angle on the polymer substrates were better than those on the glass substrate using in-situ photoalignment method. It is considered that this increase in pretilt angle may be attributed to the roughness of the micro-groove substrate induced by the in-situ photoalignment. As temperature of heated subtrate and UV exposure time increases, pretilt angle of the cell used polymer film increased. It is considered that the heating temperature of substrate is attributed to generate pretilt angle. Also, EO performances of the in-situ photoaligned TN cell using the polymer substrate are almost the same as that of the TN cell using the glass substrate.

Original languageEnglish
Pages (from-to)143/[471]-150/[478]
JournalMolecular Crystals and Liquid Crystals
Volume434
DOIs
Publication statusPublished - 2005 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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