Circular polarizing plate and bendable display device
US10036840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2014 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Jan 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/311
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a circularly polarizing plate capable of realizing a bendable display apparatus in which an excellent reflection hue is obtained and a color change due to bending is suppressed. A circularly polarizing plate according to the present invention is used in a bendable display apparatus. The circularly polarizing plate includes: a polarizer; and a retardation film arranged on one side of the polarizer. In-plane retardations of the retardation film satisfy a relationship of Re(450)<Re(550)<Re(650), and a slow axis direction of the retardation film is adjusted so as to form an angle of from 20° to 70° with respect to a bending direction of the display apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.