Light emitting device having a mirror portion
US7476913B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 10, 2004 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Aug 10, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S257/918
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A light emitting device has a cup portion with a bottom surface opening, and one electrode of a light emitting element is connected to the cup portion. The other electrode of the light emitting element is connected to a lead set up from an inner space to outside the cup portion using the opening of the cup portion. Each electrode and lead of the light emitting device can be electrically connected without bonding wires. This prevents shadows or light unevenness from reflecting the shape of the bonding wire, thereby enhancing light-emission efficiency. As an alternative to setting up the lead from inside to the outside of the cup portion, the lead existing outside the cup portion and the other electrode are electrically connected via the bonding wire through the cup portion's opening. Thus, light outputted outside of the light emitting device is not intercepted by the bonding wire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.