Optical waveguide element and display device
US10437068B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2018 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Feb 12, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0118
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical waveguide element including a light entrance portion and a light exit portion is provided. The light entrance portion includes a first light guide layer, a second light guide layer, and at least one third light guide layer. Light entrance surfaces of the first light guide layer and the second light guide layer jointly compose a first inclined surface. Light exit surfaces of the first light guide layer and the second light guide layer jointly compose a second inclined surface. The first inclined surface and the second inclined surface are inclined relative to a bottom surface of the first light guide layer. The thickness of the light exit portion is less than the total thickness of the first light guide layer, the second light guide layer, and the at least one third light guide layer. A display device is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.