Device properties and polar anchoring of nematic molecules at photodimerized surfaces

Devanand K. Shenoy; Kirsten A. Grueneberg; Jawad W. Naciri; Ranganathan Shashidhar; Y. Nastishyn; R. Pollack; Oleg D. Lavrentovich

doi:10.1117/12.343869

26 March 1999 Device properties and polar anchoring of nematic molecules at photodimerized surfaces

Devanand K. Shenoy, Kirsten A. Grueneberg, Jawad W. Naciri, Ranganathan Shashidhar, Y. Nastishyn, R. Pollack, Oleg D. Lavrentovich

Author Affiliations +

Proceedings Volume 3635, Liquid Crystal Materials, Devices, and Applications VII; (1999) https://doi.org/10.1117/12.343869
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

A photo-dimerized monolayer (PDML) has been recently developed by us for liquid crystal alignment. Electro-optic properties of a single pixel prototype device with the PDML alignment layer have been measured. Data on the contrast, threshold voltage and slope of the response curve are presented which demonstrate the efficacy of the PDML layer for LCD applications. In addition, the polar anchoring energy was measured for PDML layers differing in the chemical composition. The ability to tune this anchoring energy through chemical modification is demonstrated. It is shown that the anchoring strength is comparable to that obtained for liquid crystal cells using the mechanically rubbed polyimide alignment layer.

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Devanand K. Shenoy, Kirsten A. Grueneberg, Jawad W. Naciri, Ranganathan Shashidhar, Y. Nastishyn, R. Pollack, and Oleg D. Lavrentovich "Device properties and polar anchoring of nematic molecules at photodimerized surfaces", Proc. SPIE 3635, Liquid Crystal Materials, Devices, and Applications VII, (26 March 1999); https://doi.org/10.1117/12.343869

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