Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2008-04-22
2008-04-22
Caley, Michael H. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S165000, C345S107000, C359S296000
Reexamination Certificate
active
10950806
ABSTRACT:
An electrophoretic liquid crystal display device comprises:two opposed cell walls enclosing a layer of an electrophoretic composition comprising a liquid crystal material having finely divided pigment particles dispersed therein;a plurality of electrode structures on an inner surface of each cell wall for applying an electric field across at least some of the liquid crystal material, overlapping regions of opposed electrode structures on each cell wall defining pixels;wherein the liquid crystal material has a dielectric anisotropy greater than about 2 or less than about −2; andwherein at least one of said cell walls is translucent and has an inner surface that is of low energy or induces a substantially homeotropic local alignment of adjacent molecules of said liquid crystal material.
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Caley Michael H.
Lowe Hauptman & Ham & Berner, LLP
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