Illumination device comprising first, second, and third reflectors, a lightguide, and a light-emitting layer and display device
US9933558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Dec 16, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to one embodiment, an illumination device includes a lightguide, a light-emitting layer, a first reflector, a second reflector, and a third reflector. A distance between the first reflector and the second reflector is greater at a second position farther from the light-emitting layer than at a first position closer to the light-emitting layer. A distance between the lightguide and the third reflector is greater at a fourth position farther from the first reflector than at a third position closer to the first reflector. An emission portion for allowing emission of light emitted from the light-emitting layer is formed between the second reflector and the third reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.