Light emitting device, light emitting device package, and lighting system
US8829541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Jun 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/819
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Provided are a light emitting device, a light emitting device package, and a lighting system. The light emitting device includes a crystalline substrate having a plurality of side surfaces, a light emitting structure layer comprising a first conductive type semiconductor layer, an active layer, and a second conductive type semiconductor layer on the substrate, and a first electrode on the first conductive type semiconductor layer and a second electrode on the second conductive type semiconductor layer. An amorphous region is defined in a side surface of the substrate, and the amorphous regions of two sides adjacent to each other have different depths from a top surface of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.