Optical film, light-diffusing film, and methods of making and using the same
US7280170B2 · kind B2 · utility
2Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2004 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Apr 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0051
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of making an optical film comprises heating the optical film comprising greater than or equal to 80 wt. % polycarbonate to a sufficient temperature to stretch the optical film, wherein the weight percent is based on a total weight of the optical film; and stretching the optical film, wherein a resulting stretched optical film has a linear CTE measured in a direction parallel to a stretching direction of less than or equal to 50×10−6 cm/cm/° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.