Optical compensatory sheet
US5631051A · kind A · utility
29Cited by
1References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1996 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Apr 10, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical compensatory sheet is composed of a transparent support, an orientation layer and an optically anisotropic layer. The orientation layer is a crosslinked polymer layer a surface of which has been subjected to rubbing treatment, and the optically anisotropic layer is made of a discotic liquid crystalline compound. A liquid crystal display is composed of a liquid crystal cell, a polarizing sheet arranged on each side of the cell, and the optical compensatory sheet provided between at least one side of the liquid crystal cell and the polarizing sheet. A color liquid crystal display has also the optical compensatory sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.