Fabrication of dichroic guest-host polarizer

Details Fabrication of dichroic guest-host polarizer Fabrication of dichroic guest-host polarizer

2011-07-12

2011-07-12

Hahm, Sarah (Department: 2874)

Liquid crystal cells, elements and systems

Liquid crystal optical element

Passive liquid crystal polarizer

Reexamination Certificate

active

07978302

ABSTRACT:
A method for the manufacture of a polarizer is provided. The method comprises providing a liquid crystal composition comprising a liquid crystal host and a viscosity enhancer; providing a thin film of said composition on a substrate; orienting said liquid crystal host to obtain an aligned film in a first liquid crystal mesophase, wherein the liquid crystal host is aligned planar to said substrate; gelating said viscosity enhancer to congeal said film; and obtaining a second liquid crystal state in said congealed film. By the use of a viscosity enhancer in the composition, homeotropic alignment of the liquid crystal host can be suppressed.

REFERENCES:
patent: 2006/0046163 (2006-03-01), Broer et al.
patent: 08239666 (1996-09-01), None
patent: WO 2004036299 (2004-04-01), None

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