Ultraviolet light emitting devices
US10483433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2018 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Aug 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/832
Abstract
An embodiment of the present inventive concept provides an ultraviolet light emitting device comprising: a substrate having a concave or convex edge pattern disposed along an edge of an upper surface thereof; a semiconductor laminate disposed on the substrate and including first and second conductivity-type AlGaN semiconductor layers and an active layer disposed between the first and second conductivity-type AlGaN semiconductor layers and having an AlGaN semiconductor; a plurality of uneven portions extending from the edge pattern along the side surface of the semiconductor laminate in a stacking direction; and first and second electrodes connected to the first and second conductivity-type AlGaN semiconductor layers, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.