Protective film and method for manufacturing same, touch panel, and display device
US11928274B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jul 7, 2021 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Jul 7, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04112
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A protective film includes a transparent substrate layer and a transparent hardened layer covering a surface of the transparent substrate layer. The transparent hardened layer includes a first region covering a middle portion of the transparent substrate layer and a second region covering an edge of the transparent substrate layer, where hardness of the first region is greater than hardness of the second region. The transparent hardened layer includes the first region and the second region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.