US PATENT SUBCLASS 349 / 135
.~.~.~.~.~.~ With particular polymer composition of the alignment layer (e.g., fluorine- containing aliphatic polyamide)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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  DF  .~.~.~ Alignment layer {6}
132  DF  .~.~.~.~ For parallel alignment {2}
133  DF  .~.~.~.~.~ With chiral smectic liquid crystal (includes ferroelectric liquid crystal) {2}
135.~.~.~.~.~.~ With particular polymer composition of the alignment layer (e.g., fluorine- containing aliphatic polyamide)

DEFINITION

Classification: 349/135

With particular polymer composition of the alignment layer

(e.g., fluorine-containing aliphatic polyamide):

(under subclass 133) Subject matter wherein the chemical composition of the alignment layer is specifically recited (i.e., more than merely reciting polyamide, polyvinyl alcohol, silicon dioxide, or organosilane).

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Article,

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