Method for producing polarizing film
US10088705B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2015 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Sep 29, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing a polarizing film includes (1) preparing a laminate (a) which includes a carrier film and a polarizer with a thickness of 10 μm or less formed on one surface of the carrier film and contains a polyvinyl alcohol-based resin; (2) peeling off the carrier film from the laminate (a); and (3) applying a liquid material to a side of the laminate (a) from which the carrier film has been peeled off and then solidifying or curing the liquid material to form a transparent resin layer with a thickness of 0.2 μm or more, wherein the liquid material contains a resin component or a curable component capable of forming a resin layer. This production method enables the achievement of a polarizing film which is able to have satisfactory durability in a heated environment even in cases where a thin polarizer is used therefor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.