Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With charge transferring layer of specified composition
Patent
1994-06-28
1996-06-25
Ahmad, Nasser
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
With charge transferring layer of specified composition
359 78, 359 79, 359 82, 359 87, 359106, C09K 1900
Patent
active
055298176
ABSTRACT:
A substrate is treated prior to use to induce a near-parallel orientation of a liquid crystal director relative to the substrate. A layer of silica is deposited on the substrate by in-line magnetron sputtering as the substrate is moved past the sputtering target, and the silica-coated substrate is thereafter treated with an alcohol that is selected from one of two classes of alcohols: (1) alcohols having an aromatic ring structure on one end of an aliphatic chain and a hydroxy group on the other end, with or without at least one ether group in the chain, and (2) an aliphatic chain having a hydroxy group at one end and at least one ether linkage in the chain. An example is 2-phenylethanol. The alcohol-treated substrate is covered with a layer of the liquid crystal. The process of the invention induces a tilt to the director of the liquid crystal. The tilt is about 0.5.degree. to 4.degree., as measured parallel to the surface of the substrate.
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Miller Leroy J.
Smith, Jr. Willis H.
Ahmad Nasser
Denson-Low W. K.
Duraiswamy V. D.
Hughes Aircraft Company
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