US PATENT SUBCLASS 349 / 76
.~.~.~ Of twisted (or chiral) nematic or supertwisted nematic liquid crystal

Current as of: June, 1999
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349 /   HD   LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS

56  DF  PARTICULAR STRUCTURE {7}
74  DF  .~ Interconnection of plural cells in series {2}
75  DF  .~.~ For compensation of birefringence effects {1}
76.~.~.~ Of twisted (or chiral) nematic or supertwisted nematic liquid crystal

DEFINITION

Classification: 349/76

Of twisted (or chiral) nematic or supertwisted nematic liquid crystal:

(under subclass 75) Subject matter wherein the cell having birefringence and needing compensation contains nematic liquid crystal having a nonzero twist angle.