Controlling the alignment of liquid crystals by nanoparticle-doped and UV-treated polyimide alignment films

Shie-Chang Jeng*, Su June Hwang, Tai An Chen, Han Shiang Liu, Mu Zhe Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

We have developed two approaches for controlling the pretilt angles of liquid crystal molecules by using conventional polyimide (PI) alignment materials either doping homogeneous PIs with Polyhedral Oligomeric Silsequioxanes (POSS) nanoparticles or treating homeotropic PIs with ultraviolet light. These techniques are very simple and are compatible with current methods familiar in the LCD industry. The characteristics of modified PI alignment films and their applications for photonic devices are demonstrated in this paper.

Original languageEnglish
Title of host publicationEmerging Liquid Crystal Technologies VII
DOIs
StatePublished - 2 Mar 2012
EventEmerging Liquid Crystal Technologies VII - San Francisco, CA, United States
Duration: 22 Jan 201225 Jan 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8279
ISSN (Print)0277-786X

Conference

ConferenceEmerging Liquid Crystal Technologies VII
CountryUnited States
CitySan Francisco, CA
Period22/01/1225/01/12

Keywords

  • liquid crystal devices
  • nanoparticle
  • polyimide
  • pretilt angle
  • UV-treatment

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