Cover window and flexible display device having the same
US11978370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2021 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Jan 16, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A cover window includes a first layer having a first modulus, a second layer disposed on the first layer and having a second modulus smaller than the first modulus, and a third layer disposed on the second layer and having a third modulus equal to or larger than the first modulus, and in which the third layer includes a nanoparticle-polyurethane complex in which polyurethane is bonded with nanoparticles by a covalent bond. Therefore, the cover window of the present disclosure provides effects that the folding and rolling are possible with excellent surface characteristic and the restorability against the pressing and excellent optical property. A flexible display device may include the cover window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.