Method for producing light diffusion film and light diffusion film
US9523799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Mar 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133504
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing a light diffusion film having first and second louver structure regions includes the following steps (a) to (d): (a) preparing a composition for light diffusion film; (b) applying the composition for light diffusion film, and forming a coating layer; (c) performing first active energy ray irradiation, and forming a first louver structure region in the lower part of the coating layer, while leaving a louver structure-unformed region in the upper part of the coating layer; and (d) performing second active energy ray irradiation, and forming a second louver structure region in the louver structure-unformed region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.