Method of making a phase difference film
US9067239B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Feb 15, 2013 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Aug 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/25
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of making a phase difference film includes: (a) providing a substrate having a first surface provided with a light-shielding layer and a second surface provided with an orientable layer; (b) providing a first linear polarized UV light to irradiate the orientable layer and providing a second linear polarized UV light to irradiate the orientable layer so as to form the orientable layer into an alignment layer having first and second regions that are photo-oriented in two different orientation directions, respectively; and (c) coating a liquid crystal material on the alignment layer and curing the liquid crystal material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.