Birefringence pattern builder
US8861083B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2011 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Jun 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3016
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A birefringence pattern builder used in a method of producing a patterned birefringent product including a step of patterned light exposure of an optically anisotropic layer and a step of heating the layer after the light exposure to 50° C. or higher but not higher than 400° C., which include the optically anisotropic layer, a support, and a laminate film in this order, is provided. The birefringence pattern builder prevents nonuniformity of functional layers that may generate in the production process, is useful for a production method that hardly causes nonuniformity in the patterned birefringent product even after a rolling-up step in the industrial production process, and enables a production of a thinner product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.