US PATENT SUBCLASS 349 / 75
.~.~ For compensation of birefringence effects

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.~.~ For compensation of birefringence effects {1}
76  DF  .~.~.~> Of twisted (or chiral) nematic or supertwisted nematic liquid crystal

DEFINITION

Classification: 349/75

For compensation of birefringence effects:

(under subclass 74) Subject matter wherein one or more of the plural cells compensates for the double refraction of another liquid crystal cell.