Continuous pretilt angle controlled no-bias-bend pi cell via blended polyimide liquid crystal system

Dai Hyun Kim, Hong Gyu Park, Young Hwan Kim, Byoung Yong Kim, Chul Ho Ok, Jeong Yeon Hwang, Jeong Min Han, Yong Pil Park, Dae Shik Seo

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The controllable pre-tilt angle of liquid crystals was investigated using a blend of horizontal and vertical polyimide prepared using a rubbing method. Various pretilt angles ranging from 0 to 90 were achieved as a function of the vertical polyimide content. We observed uniform liquid crystal alignment on the rubbing-treated blended polyimide layer. A no-bias-bend (NBB) pi cell with an intermediate pretilt angle of 47.8 was manufactured. This cell had no initial bias voltage and a low threshold voltage, which indicates that it has low power consumption. In addition, the response time of the NBB pi cell was rapid.

Original languageEnglish
Pages (from-to)102-108
Number of pages7
JournalMolecular Crystals and Liquid Crystals
Volume529
DOIs
Publication statusPublished - 2010 Jan

Bibliographical note

Funding Information:
This research was supported by the MKE (The Ministry of Knowledge Economy), Korea under the ITRC (Information Technology Research Center) Support program supervised by the NIPA (National IT Industry Promotion Agency) (NIPA-2009-C1090-0902-0018).

All Science Journal Classification (ASJC) codes

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

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