Soraa, Inc.

Kenneth John Thomson

Michael Joseph Cich

A method for fabricating LED devices. The method includes providing a gallium and nitrogen containing substrate member (e.g., GaN) comprising a backside surface and a front side surface. The method includes subjecting the backside surface to a polishing process, causing a backside surface to be characterized by a surface roughness, subjecting the backside surface to an anisotropic etching process exposing various crystal planes to form a plurality of pyramid-like structures distributed spatially in a non-periodic manner on the backside surface, treating the backside surface comprising the plurality of pyramid-like structures, to a plasma species, and subjecting the backside surface to a surface treatment. The method further includes forming a contact material comprising an aluminum bearing species or a titanium bearing species overlying the surface-treated backside to form a plurality of LED devices with the contact material.

Contacts for an N-type gallium and nitrogen substrate for optical devices

Contacts for an n-type gallium and nitrogen substrate for optical devices

Techniques for manufacturing optical devices are disclosed. More particularly, light emitting diodes and in particular to ohmic contacts for light emitting diodes are disclosed.

Growing community of inventors

Fremont, CA, United States of America

Kenneth John Thomson