Patent · US Expired

Materials for inducing alignment in liquid crystals and liquid crystal displays

US6380432B2 · kind B2 · utility

1Cited by
8References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 20, 2000
Grant dateApr 30, 2002
Priority date
Expiry dateDec 20, 2020

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02F1/133788
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

The present invention provides novel aromatic diamines useful in preparing polyimides for optical alignment layers in liquid crystal displays. The novel compositions comprise side-chains general formula I—L1—D—L2—Cfwherein D comprises 1 to 4 carbon-carbon double bonds, Cf is a monovalent C4 to C20 fluorocarbon radical and L1 and L2 are linking groups.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.