Patent ID: 7579202
Filing Date: 2009-08-25
Classification: H01L,Y10S

Abstract:
1. A method for fabricating a light emitting diode element comprising steps: (a) providing a substrate, forming a mask layer on said substrate with said mask layer having a plurality of rectangles exposing epitaxial regions on said substrate; (b) forming a LED (Light Emitting Diode) epitaxial layer on said epitaxial regions, and forming a separating slit on said LED epitaxial layer and between each two said epitaxial regions; (c) forming an etch-mask layer on said LED epitaxial layer; (d) letting a wet-etching solution permeate through said separating slits to etch said mask layers and said LED epitaxial layers bottom up to form side-protrudent structures; (e) removing said etch-mask layer, and forming a transparent electrically-conductive layer on said LED epitaxial layer; (f) etching said transparent electrically-conductive layer and said LED epitaxial layer to form a contact region, and forming an n-type ohmic contact electrode on said contact region and a p-type ohmic contact electrode on said transparent electrically-conductive layer, which are used to provide a driving current for said LED epitaxial layer; and (g) grinding, cutting and splitting said substrate into LED elements.