Electrical current distribution in light emitting devices
US8124994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2007 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Sep 4, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/819
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A light emitting device is disclosed that has a plurality of epitaxial layers including an active layer, at least one of a reflective layer and an ohmic contact on a first side of the epitaxial layers; and a layer of a conductive metal on a second side of the epitaxial layers and having a light emitting surface. A terminal is on the light emitting surface, the terminal comprising an array for diffusing electrical current and minimizing its effect on light output. The array may have a bonding pad, an outer portion, and a joining portion connecting the bonding pad and the outer portion; the outer portion and the joining portion being for current dissipation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.