Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1988-03-21
1990-07-31
Miller, Stanley D.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
350347V, 350346, 427 12, 427 58, G02F 113
Patent
active
049445766
ABSTRACT:
A polymer dispersed liquid crystal (PDLC) film, along with various fabrication methods that enable partial prealignment of the film's LC bubbles, are described. The film is formed with a matrix of liquid crystal bubbles. Individual liquid crystals within the bubbles are partially, but substantially less than fully, aligned in a given direction. Partial alignment is attained by the controlled application of an electric or magnetic field, or a mechanical flow, during photopolymerization. The resulting films retain the positive qualities of prior PDLCs, and in addition exhibit generally lower threshold and operating voltages, and can be used as tunable birefringent films in the infrared region.
REFERENCES:
patent: 3585381 (1971-06-01), Hodson et al.
patent: 3872050 (1975-03-01), Benton et al.
patent: 4579423 (1986-04-01), Fergason
patent: 4685771 (1987-08-01), West et al.
Lacker Anna M.
Lim Khoon C.
Margerum J. David
Ramos Elena
Smith, Jr. Willis H.
Duraiswamy V. D.
Hughes Aircraft Company
Karambelas A. W.
Miller Stanley D.
Pellman Anita E.
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