Light-emitting diode having a transparent substrate
US6064076A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | May 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/013
Abstract
A light-emitting diode having a transparent substrate contains a transparent GaP substrate having a first lattice constant, a first ohmic contact to the GaP substrate, a buffer layer having a graded lattice constant which gradually changes from a first lattice constant to a second lattice constant, a light generating region formed on the buffer layer and having the second lattice constant, and a second ohmic contact formed on the light generating region. In the present invention, light emitted to the substrate is not absorbed by the transparent substrate. Therefore, the brightness of the LED is increased and the V.sub.f value is not increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.