Liquid crystal displays containing tilted optical axis compensation films having a negative birefringence
US5940155A · kind A · utility
12Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Sep 4, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/15
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical compensation arrangement using tilted-optical-axis compensation films with negative birefringence for low-twist-angle nematic liquid crystal cells to achieve better viewing angle characteristics than a regular 90.degree.-twist TN cell, with similar high contrast ratio and brightness as the regular TN cell near normal incidence at a comparable operating voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.