Polyimide laminated film roll body and method for manufacturing same
US11248098B2 · kind B2 · utility
0Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2018 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Jul 19, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2479/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a laminated film roll body, around which a laminated film is wound, the laminated film including: a first polyimide film; and a second polyimide film laminated on the first polyimide film and made of a fluorine-based, siloxane-based, or amine-based polyamic acid, wherein the second polyimide film has a glass transition temperature of 350° C. or higher when measured by a temperature elevation rate of 20° C./min. The laminated film roll body can be used in a continuous manufacturing process of a flexible device to improve process yield and efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.