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Proceedings Paper

Reflective display characterization: temporal and spatial viewability measurements of holographic polymer-dispersed liquid crystal (HPDLC) display samples
Author(s): Frederick M. Meyer; Denise L. Aleva; Sam J. Longo; Terry L. Trissell; Robert W. Schwartz; Darrel G. Hopper
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Paper 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.

Paper Details

Date Published: 28 August 2002
PDF: 15 pages
Proc. SPIE 4712, Cockpit Displays IX: Displays for Defense Applications, (28 August 2002); doi: 10.1117/12.480918
Show Author Affiliations
Frederick M. Meyer, Air Force Research Lab. (United States)
Denise L. Aleva, Air Force Research Lab. (United States)
Sam J. Longo, L3 Communications (United States)
Terry L. Trissell, Northrop Grumman Corp. (United States)
Robert W. Schwartz, Northrop Grumman Corp. (United States)
Darrel G. Hopper, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 4712:
Cockpit Displays IX: Displays for Defense Applications
Darrel G. Hopper, Editor(s)

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