Molecular Basis for Liquid Crystal Field Effects.

Abstract

The relationships between the molecular structure of liquid crystal (LC) components and dopants are studied in regard to the dynamic scattering (DS) electro-optical effects of nematic liquid crystals. Redox dopants which undergo electrochemically reversible reactions at lower potentials than the irreversible reactions of LC's are used to improve the dc-DS performance and stability. Two years of continuous dc-DS at 20 V is achieved by using such redox dopants in phenyl benzoate LC's. These redox dopants also give the LC lower threshold voltages and higher scattering levels for dc-DS than are obtained with organic salt dopants. Among the many electro-optical applications of LC's dynamic scattering is particularly useful for flat panel, TV-rate, matrix displays and for electronically addressed telescope reticles.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1976
Accession Number
ADA032820

Entities

People

  • J. David Margerum

Organizations

  • HRL Laboratories

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Crystal Structure
  • Data Processing
  • Dissociation
  • Electrochemical Reactions
  • Electrodes
  • Liquid Crystal Displays
  • Magnetic Fields
  • Materials
  • Matrix Displays
  • Measurement
  • Organic Chemistry
  • Semiconductors

Readers

  • Human-Computer Interaction (HCI).
  • Materials Science and Engineering.
  • Polymer Science and Technology

Technology Areas

  • Microelectronics
  • Space