Optical film and image display device
US10935700B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2017 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Mar 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/311
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
One aspect of the present invention provides a foldable light-transmitting optical film 10 for use in an image display device 50, which includes a resin base material 11, a hard coat layer 12 provided on the first surface 11A of the resin base material 11, and a resin layer 13 having a film thickness of 50 μm or more and 300 μm or less and provided on the second surface 11B of the resin base material 11 that is opposite to the first surface 11A, wherein the shear storage modulus (G′) of the optical film 10 at 25° C. in the frequency range from 500 Hz to 1000 Hz inclusive is more than 200 MPa and 1200 MPa or less, and the shear loss modulus (G″) of the optical film at 25° C. in the frequency range from 500 Hz to 1000 Hz inclusive is 3 MPa or more and 150 MPa or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.