Reflective polarizer with micro-beads and blue colorant
US8310631B2 · kind B2 · utility
0Cited by
5References
18Claims
0Family size
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Key dates
| Filing date | Dec 16, 2009 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Sep 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In this disclosure, a blue colorant is added in the adhesion layer of a reflective polarizer to compensate the chromaticity difference caused by the reflective polarizer itself and large horizontal viewing angle. The chromaticity difference can be further reduced by adding beads in the adhesion layer and/or forming light-gathering microstructures on the outer surface of the quarter wave plate of the reflective polarizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.