Light-emitting element comprising a reflective structure with high efficiency
US9240519B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2014 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Jan 23, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/841
Abstract
A light-emitting element, comprises: a substrate; a light-emitting semiconductor stack over the substrate and comprising an active layer; and a Distributed Bragg reflective unit under the substrate comprising a first Distributed Bragg reflective structure under the substrate and comprising a first number of pairs of alternately stacked first sub-layers and second sub-layers, and a second Distributed Bragg reflective structure under the first Distributed Bragg reflective structure and comprising a second number of pairs of alternately stacked third sub-layers and fourth sub-layers, wherein the first number is different from the second number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.