A New Non-Rubbing Technique for Liquid Crystal Alignment

Abstract

A new non-rubbing technique for uniform, planar alignment of liquid crystals has been developed. It involves a combination of chemisorption and UV-induced photo-dimerization. By varying chemical structure of the outermost part of the alignment layer, it has been possible to control the pretilt of the liquid crystal molecules at the surface ranging from 0 to 20 degrees. A feature of the process is that it is a room temperature process and applicable to a variety of substrates. Data on LCD cells fabricated using these alignment layers are presented.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1997
Accession Number
ADA361367

Entities

People

  • B. Peek
  • D. Shenoy
  • K. Grueneberg
  • R. Shashidhar
  • U. Kakarla

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Angle Of Incidence
  • Chromophores
  • Contrast
  • Crystals
  • Fabrication
  • High Temperature
  • Liquid Crystal Displays
  • Liquid Crystals
  • Low Temperature
  • Measurement
  • Military Research
  • Molecules
  • Orientation (Direction)
  • Spin Coatings
  • Square Waves
  • Substrates

Fields of Study

  • Chemistry

Readers

  • Materials Science and Engineering.
  • Nanofabrication and Microfabrication.