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Proceedings Paper

Conducting polymer substrates for plastic liquid crystal display
Author(s): Ling Huang; Catherine Elizabeth O'Ferrall; Terrance Vargo; Ranganathan Shashidhar; William J. Fritz; Steven W. Smith; Richard Hewitt; J. William Doane
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Paper Abstract

In a conventional liquid crystal display device (LCD), glass substrates coated with an indium tin oxide (ITO) layer are typically used for the application of an electric field to the liquid crystal material. For many applications, there is a need for a LCD with a plastic substrate. Polypyrrole is a well known conducting polymer for its high conductivity and chemical stability. Compared with the currently used ITO conducting layer, polypyrrole is more compatible mechanically with plastic. Because it is an organic material, it should be able to bend and flex with the substrate. Therefore, it is a good candidate for the conducting surface needed in a plastic LCD. Here we present the preparation of polypyrrole films on a polyethylene terephthalate (PET) substrate by an in-situ solution deposition process and their patterning by conventional photolithography techniques. We discuss their important physical properties, such as surface resistance and optical transmission, and their suitability as a substitute for ITO as an electrode for a plastic reflective Ch-LCD.

Paper Details

Date Published: 11 April 1997
PDF: 4 pages
Proc. SPIE 3015, Liquid Crystal Materials, Devices, and Applications V, (11 April 1997); doi: 10.1117/12.271390
Show Author Affiliations
Ling Huang, Naval Research Lab. (United States)
Catherine Elizabeth O'Ferrall, Naval Research Lab. (United States)
Terrance Vargo, Naval Research Lab. (United States)
Ranganathan Shashidhar, Naval Research Lab. (United States)
William J. Fritz, Kent State Univ. (United States)
Steven W. Smith, Kent State Univ. (United States)
Richard Hewitt, Kent State Univ. (United States)
J. William Doane, Kent State Univ. (United States)

Published in SPIE Proceedings Vol. 3015:
Liquid Crystal Materials, Devices, and Applications V
Ranganathan Shashidhar, Editor(s)

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