Polycarbonate resin film and manufacturing process thereof
US8298630B2 · kind B2 · utility
8Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2006 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Oct 14, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24479
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polycarbonate resin film which has an average thickness of 10 to 150 μm, a thickness nonuniformity of 2% or less, a retardation R(589) in the plane of the film measured at a wavelength of 589 nm of 12 nm or less, a retardation Rth(589) in the thickness direction of the film measured at a wavelength of 589 nm of 35 nm or less and is used for optical purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.