Patent ID: 8034643
Filing Date: 2011-10-11
Classification: H01L,H01S

Abstract:
1. A method for fabrication of a semiconductor device, the method including: providing a wafer comprising a substrate with multiple epitaxial layers mounted on a substrate, the multiple epitaxial layers comprising an active region where light is able to be generated; forming a first ohmic contact layer on a first surface of the multiple epitaxial layers, the first surface being remote from the substrate, the first ohmic contact layer comprising multiple metal layers and the first ohmic contact layer being a mirror at a junction between the first surface of the multiple epitaxial layers and the first ohmic contact layer; coating the first ohmic contact layer with an adhesion layer prior to application of a seed layer of a thermally conductive metal, wherein the seed layer is formed on the adhesion layer by electroplating and the seed layer is patterned with photoresist patterns before the electroplating; forming a relatively thick layer of the thermally conductive metal between the photoresist patterns and adjacent to the first ohmic contact layer, the thermally conductive metal being of sufficient thickness to provide a heat sink; and removing the substrate.