Investigation of liquid crystal aligning capabilities using a new photoalignment method on the photopolymer surfaces

Jeoung Yeon Hwang, Hyung Kyu Kim, Dae Shik Seo, Dong Hack Suh

Research output: Contribution to journalArticle

Abstract

In this work, we have investigated the liquid crystal (LC) aligning capabilities and the electro-optical (EO) characteristics for the photo-aligned twisted nematic (TN) cell with linearly polarized UV exposure of normal direction on the PMCh (poly (4-methacryloyloxy chalcone)) surfaces using a new photo-alignment method. Good thermal stabilities of synthesized PMCh were obtained by TGA (Thermogravimetric Analysis) measurement. The excellent voltage transmittance (V-T) curve of the photo-aligned TN-LCD with UV exposure on the PMCh surface for 1 min using a new photodimerization method was observed. The voltage holding ratio (VHR) of the photo-aligned TN-LCD with photodimerized on the PMCh surface using a new photodimerization method was higher than that of a conventional photo-dimerization method. Consequently, a good LC aligning capabilities using a new photo-alignment method can be achieved.

Original languageEnglish
Pages (from-to)493-501
Number of pages9
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume368
DOIs
Publication statusPublished - 2001 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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