Display device and method for manufacturing same
US9627655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2013 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Jul 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a display apparatus that can suppress the occurrence of a crack in a circularly polarizing plate in its manufacturing process without reducing designability and mass productivity. A display apparatus according to an embodiment of the present invention includes: a display element; and a circularly polarizing plate placed on a viewer side of the display element. The circularly polarizing plate includes a polarizer and a retardation film. In-plane retardations of the retardation film satisfy a relationship represented by the below-indicated expression (1); and an angle θ1 formed between a slow axis of the retardation film and a direction in which a wiring crimping portion provided along at least one side of a peripheral edge portion of the display element extends satisfies a relationship represented by the below-indicated expression (2):Re(450)<Re(550) (1)θ1≦70° (2)where Re(450) and Re(550) represent in-plane retardations measured at 23° C., and at wavelengths of 450 nm and 550 nm, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.