Polarizer to improve contrast for liquid crystal display from down view angle
US6956699B2 · kind B2 · utility
1Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Nov 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarizer to improve contrast for LCD from down view angle is produced by laminating a triacetate cellulose (TAC) sheet on each side of a polyvinyl alcohol (PVA) sheet and further on the toppest triacetate cellulose (TAC) sheet applying a surface-treatment layer that is a protective film formed by black dye mixture to inhibit dark-state light leakage and improve the contrast for LCD from down view angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.