Cover film and flexible display device
US10957224B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Jul 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/311
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A cover film is applied to a flexible display device. The cover film includes a light incident surface and a light exit surface. A plurality of concaves are provided on the light incident surface. Each of the concaves includes a first portion, and the first portion is arch shaped. By providing the plurality of concaves with an arched structure on the cover film, the flexible display device changes a light path less during a bending process, and rainbow ripples or water ripples may be avoided, thereby improving user experience. In addition, since the plurality of concaves are the arched structures with a certain radian, the plurality of concaves have a certain concentrating effect, so that brightness of a visible region of the flexible display device can be enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.