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30 Mar 1987

Volume 50, Issue 13, pp. 783-858

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Fast write and erase surface resistance induced nematic liquid crystal display

M. Monkade, Zang Fuliang, P. Martinot‐Lagarde, and G. Durand

Appl. Phys. Lett. 50, 856 (1987); http://dx.doi.org/10.1063/1.98013 (3 pages) | Cited 3 times

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Show Abstract
A room‐temperature nematic liquid crystal cell is prepared in the homeotropic geometry using dielectrically positive pentyl cyanobiphenyl. The indium tin oxide electrodes are treated to increase locally their surface resistance. At high frequencies (ω>ωc) the border of these regions behaves as capacitance edge, creating an oblique field which ‘‘writes.’’ At low frequencies (ω<ωc) the field is back normal to the electrodes and ‘‘erases’’ rapidly. A 50‐μs erasing time has been achieved for E∼10 V/μm and ωc/2π=104 Hz. The practical smallest response time of the device is ∼(8ωc)−1. Sub‐μs writing and erasing are possible.
Show PACS
85.60.Pg Display systems
61.30.Gd Orientational order of liquid crystals; electric and magnetic field effects on order
73.25.+i Surface conductivity and carrier phenomena
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