Optical birefringence compensator adapted for LCD
US5298199A · kind A · utility
77Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1991 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Oct 11, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Ionomer resin sheet is stretched in one direction in the plane of sheet to give uniaxial anisotropy, and then heated above the melting point under pressure to cause relaxation of the anisotropy. After cooling, a sheet of biaxial anisotropy is obtained. The degree of anisotropy depends on the initial stretching, heating temperature, heating time and pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.