Reflective Display Characterization: Temporal and Spatial Viewability Measurements of Holographic Polymer Dispersed Liquid Crystal (HPDLC) Display Samples

Abstract

Holographically formed polymer dispersed liquid crystal (HPDLC) materials meet the requirements for a video rate reflective display. In order to produce a saturated color from a Bragg reflector, the number of index changing layers becomes critical. The fabrication process affects the number of layers forming the reflector, and, as a result, the bandwidth and optical characteristics, including reflection intensity, direction, and spread, of the reflector. The cell thickness and the liquid crystal mixture affect the voltage at which the cell operates and the speed at which the liquid crystal material can switch from the reflective to non-reflective state. The cell designer is forced to work with all of these design parameters simultaneously. This research continues previous work evaluating reflective HPDLC display samples including a method to measure temporal response and refine color reflection characterization.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2002
Accession Number
ADA430369

Entities

People

  • Denise L. Aleva
  • Frederick M. Meyer
  • Robert F. Schwartz
  • Sam J. Longo
  • Terry L. Trissell

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Air Force Research Laboratories
  • Dwell Time
  • Fabrication
  • Intensity
  • Light Sources
  • Liquid Crystal Displays
  • Liquid Crystals
  • Materials
  • Measurement
  • Military Research
  • Optical Properties
  • Reflection
  • Specular Reflection
  • Test And Evaluation
  • Waveform Generators

Fields of Study

  • Physics

Readers

  • Human-Computer Interaction (HCI).
  • Materials Science and Engineering.
  • Optical Physics and Photonics.