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Primary Examiner: Kendall, Ralph S.
Assistant Examiner: Smith, John D.
Attorney: Bruestle; Glenn H., Morris; Birgit E.

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Title: Fabrication of liquid crystal devices

Abstract: A layer of unoxidized metal is provided on surfaces of the device in such manner as to possess an oriented microstructure capable of causing sympathetic alignment of the liquid crystal molecules. The metal layer is thereafter heated in the presence of oxygen, preferably in a device envelope sealing process, to oxidize the metal layer. The metal oxide layer is stable, in that it retains the molecular aligning characteristic, and is more transparent than the metal layer.

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Inventors: Sussman, Alan (Princeton, NJ, US)

Application Number: 401234
Filing Date: 1973-09-27
Publication_date: 1976-02-17
Assignee: RCA Corporation (New York, NY)
Primary Class(es): 156/145 29/830, 148/277, 349/124, 349/125, 349/132, 349/187, 349/190, 427/109, 427/124, 427/126.2, 427/166, 438/26, 438/30
Other Classes:
US Patent Ref:

2907672	Oct, 1959	Irland et al.	117/33.
3207937	Sep, 1965	Hannam	117/222.
3578844	May, 1971	Churchill et al.	350/160.
3625591	Dec, 1971	Freiser et al.	350/160.
3731986	May, 1973	Fergason	350/150.

Other Refs: Other References: Janning, John L., "Thin Film Surface Orientation for Liquid Crystals," Applied Physics Letters, Vol. 21, No. 4, Aug. 15, 1972, pp. 173, 174.