Multilayer optical film
US9477011B2 · kind B2 · utility
17Cited by
22References
10Claims
0Family size
Inventors
Key dates
| Filing date | Jun 22, 2011 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Jan 28, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Multilayer optical film that can be used as a reflective polarizer or mirror is disclosed. The multilayer optical film comprises alternating optical layers of polyesters such as PET and PEN, copolymerized with 4,4′-biphenyl dicarboxylate. The multilayer optical film exhibits a high ratio of in-plane to out-of-plane birefringence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.