Patent ID: 7271420
Filing Date: 2007-09-18
Classification: H01L

Abstract:
1. A light emitting diode chip comprising: a substrate, a buffer layer on one side of the substrate to reduce lattice mismatch defects between the substrate and an epitaxial layer, a first color emission region layered on top of the buffer layer, said first color emission region including a second color emission region layered on top of the first color emission region, a third color emission region layered on top of the second color emission region, a topside of the LED chip, said topside being on another side of the chip from said substrate, a first color emission lower contact layer electrical connection structure including a first color emission upper contact layer electrical connection structure including a second color emission lower contact layer electrical connection structure including a second color emission upper contact layer electrical connection structure including a third color emission lower contact layer electrical connection structure including a third color emission upper contact layer electrical connection structure including a third color emission electrical connection upper contact layer electrode located topside of the LED chip and being in electrical contact with said third color emission electrical connection upper contact layer conductive metal located inside of said third color emission electrical connection upper contact layer contact hole.