Multilayered optical film, manufacturing method thereof, and display device
US9513421B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 10, 2013 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Jun 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An embodiment of an optical film includes: a polarization layer; a first phase retardation layer; a second phase retardation layer; and a light blocking layer disposed between the first phase retardation layer and the second phase retardation layer and extending along a circumference of the second phase retardation layer, wherein the polarization layer is disposed on the first phase retardation, the first phase retardation layer is disposed on the second phase retardation layer, an in-plane retardation value of the first phase retardation layer at a standard wavelength of about 550 nanometers is in a range from about 240 nanometers to about 300 nanometers, and an in-plane retardation value of the second phase retardation layer at the standard wavelength is in a range from about 110 nanometers to about 160 nanometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.