US PATENT SUBCLASS 349 / 123
.~.~.~ Alignment layer

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

56  DF  PARTICULAR STRUCTURE {7}
84  DF  .~ Having significant detail of cell structure only {17}
122  DF  .~.~ Particular nonoptical film or layer (e.g., adhesive layer, barrier layer) {3}
123.~.~.~ Alignment layer {6}
124  DF  .~.~.~.~> Formed by particular technique (e.g., Langmuir Blodgett, stretching, etc.) {2}
127  DF  .~.~.~.~> Formed of a liquid crystal material
128  DF  .~.~.~.~> With different alignments on opposite substrates
129  DF  .~.~.~.~> With plural alignments on the same substrate
130  DF  .~.~.~.~> For perpendicular alignment {1}
132  DF  .~.~.~.~> For parallel alignment {2}

DEFINITION

Classification: 349/123

Alignment layer:

(under subclass 122) Subject matter wherein the sheet is used for orienting the liquid crystal molecules in a particular manner.

(1) Note. Examples of an alignment layer are silicon dioxide, polyimides, polyamides, organosilanes, and polyvinyl alcohol.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

1.1+, for liquid crystal alignment layers having a particular chemical composition.