Polyimide film, composition for preparing polyimide film, and display device including polyimide film
US10745521B2 · kind B2 · utility
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3References
11Claims
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Key dates
| Filing date | Nov 17, 2017 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Feb 16, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyimide film having tensile modulus of greater than or equal to about 5 gigapascals, and yellowness index of less than 2.5, when measured at a thickness of the film between 50 micrometers to 100 micrometers, wherein the polyimide film is a reaction product of a combination including an aromatic dianhydride and an aromatic diamine, wherein the aromatic dianhydride includes 4,4′-oxydiphthalic anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.