Optical film
US11561426B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Aug 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1337
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present application provides an optical film. By controlling transmittance of a liquid crystal layer comprising a radical initiator for the maximum absorption wavelength of the radical initiator, the present application can provide an optical film having a liquid crystal layer having excellent resistance to external stimuli and excellent optical properties. Such an optical film can have various forms and can be used in various fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.