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An electrochemical study of a liquid crystal used in information displays

Author
Kern, J. B.
Published
Oct 1, 1974.
Physical Description
1 electronic document
Additional Creators
Oglesby, D. M. and Robertson, J. B.
Online Version

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Unclassified, Unlimited, Publicly available.
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Summary
The operational lifetime of liquid crystal displays were investigated. Electrochemical reaction at the electrodes of the display can cause failure after 2000 to 3000 hours of operation. Studies using cyclic voltametry of electrochemical reactions of N (p-methoxybenzilidene p-butylaniline (MBBA), a nematic liquid crystal were made. These studies indicate the presence of a reversible reduction of MBBA at the cathode, and that the reduction product undergoes a further reaction leading to products which are not reversibly oxidized. It is concluded that the degradation of the liquid crystal in displays can be reduced with a suitable frequency of alternating voltage.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19740027070.
Accession ID: 74N35183.
NASA-TM-X-72620.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15742540