Light emitting diode
US6774404B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2003 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Apr 7, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
Abstract
A light emitting diode is disclosed which can enhance the scattering of light produced by a light emitting element to improve a brightness not only at an upper surface but also at side surfaces of a resin sealant covering the light emitting element, thereby providing a high brightness level in a wider range of angle.This light emitting diode comprises a substrate 22, a pair of electrodes 23a, 23b provided on the substrate, a light emitting element 24 mounted on the substrate and electrically connected to the electrodes, a sealant 26 provided on the substrate to seal the electrodes 23a, 23b and the light emitting element 24; and a light scattering layer 30 formed on an outermost layer of a light projecting surface 27 of the sealant 26.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.