Polyimide angularity enhancement layer
US6383578B1 · kind B1 · utility
2Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2001 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Apr 3, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An angularity enhancement layer in a liquid crystal display, which display comprises a liquid crystal cell, wherein the angularity enhancement layer includes a negative birefringent polyimide layer comprising a plurality of structural units having pendant fluorene groups, said angularity enhancement layer being disposed on at least one surface of said liquid crystal cell. A liquid crystal display can comprise an angularity enhancement construction of the invention which comprises a polyimide layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.