US PATENT SUBCLASS 368 / 84
.~.~ Liquid crystal display (i.e., LCD)

Current as of: June, 1999
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368 /   HD   HOROLOGY: TIME MEASURING SYSTEMS OR DEVICES

62  DF  CHRONOLOGICAL {12}
82  DF  .~ With electro-optical display {2}
84.~.~ Liquid crystal display (i.e., LCD)

DEFINITION

Classification: 368/84

Liquid crystal device (i.e., LCD):

(under subclass 82) Subject matter wherein a change in the optical properties of the display material is caused by an electrical voltage and results in the reflection or transmission of visible radiation.

(1) Note. A liquid crystal material is a mateial which flows like a liquid and exhibits anisotropic optical properties which are characteristic of crystals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

30, for timepieces with calendar information LCD display.

242, for timepiece LCD displays, per se.

SEE OR SEARCH CLASS

40, Card, Picture, or Sign Exhibiting, 448, for liquid crystal changing exhibitors.

252, Compositions,

299.01+, for liquid crystal compositions, per se.

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,

38, 50+, and 87+ for liquid crystal display devices with selective electrical control.

349, Liquid Crystal Cells, Elements and Systems, appropriate subclasses and especially

142, for optical systems and elements utilizing liquid crystal materials.