Optical film, manufacturing method thereof, and display device including the same
US9891359B2 · kind B2 · utility
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6References
13Claims
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Key dates
| Filing date | Apr 27, 2014 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Apr 27, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2551/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An optical film including a polarization layer, a first phase delay layer positioned on a side of the polarization layer and including a liquid crystal, and a second phase delay layer positioned on a side of the first phase delay layer, where the first phase delay layer has an optical axis defining an angle of about 17 degrees to about 27 degrees or about −27 degrees to about −17 degrees relative to a transmissive axis of the polarization layer, and the second phase delay layer has an optical axis defining an angle of about 85 degrees to about 95 degrees relative to the transmissive axis of the polarization layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.