A Study of the Dynamics of Reflection Color, Helical Axis Orientation, and Domain Size in Cholesteric Liquid Crystal Displays

Abstract

The relaxation from the field-induced homeotropic state to the equilibrium planar state of cholesteric liquid crystals is investigated. By using an optical retro-reflection technique, we have isolated the dynamics of the orientation and pitch of cholesteric helices, and through scattering and microscopy techniques, we have determined domain size as a function of time for various surface treatments. These three factors determine the viewing angle, color, and brightness of a display. An analysis of the significance of surface selection in cholestric displays is presented.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA455825

Entities

People

  • J. E. Anderson
  • Jeffrey H. Ruth
  • Peter H. Watson
  • Philip J. Bos
  • V. Sergan

Organizations

  • Kent State University

Tags

DTIC Thesaurus Topics

  • Brightness
  • Crystals
  • Dynamics
  • Image Processing
  • Intensity
  • Liquid Crystal Displays
  • Liquid Crystals
  • Materials
  • Orientation (Direction)
  • Physics
  • Planar Structures
  • Reflection
  • Refractive Index
  • Relaxation Time
  • Scattering
  • Surface Finishing
  • Time Intervals

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.