Generation of pretilt angles of liquid crystals on cinnamate-based photoalignment layer by a simple directional peel-off process

Jihye Lee, Seungwoo Lee, Yong Cheol Jeong, Kuk Young Cho, Jung Ki Park

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

As an alternative to the rubbing method, the photoalignment method has been extensively developed for liquid crystal displays owing to its various advantages including the absence of any contamination problems, feasibility of multi-domain structure formation, and low temperature processing capability. However, cinnamate-based photoreactive materials that are widely used in photoalignment suffer from several limitations including low pretilt angle and limited control of tiltedup direction of the liquid crystals compared to that of the rubbing process. In this work, we demonstrate a simple and convenient method to generate the pretilt angle, compared to that achieved via the rubbing method, by means of a simple directional peel-off process using a photo-reactive cinnamate oligomer having flexible molecular chain.

Original languageEnglish
Pages (from-to)23565-23575
Number of pages11
JournalOptics Express
Volume17
Issue number26
DOIs
Publication statusPublished - 2009 Dec 21

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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