Patent ID: 8735277
Filing Date: 2014-05-27
Classification: H01L

Abstract:
1. A method of forming a semiconductor device, the method comprising: obtaining a substrate having a surface, the substrate having a contact layer element at the surface of the substrate; forming a bump supporting layer on the surface of the substrate; forming an opening in the bump supporting layer over the contact layer element; forming an electrode layer on a surface of the bump supporting layer and within the opening in the bump supporting layer; forming an insulating auxiliary layer on a surface of the electrode layer; forming an opening in the insulating auxiliary layer to uncover a portion of the electrode layer over the contact layer element; forming a bump metallization on the surface of the electrode layer, wherein the bump metallization comprises a promoter metallization and a solder metallization, wherein a height of the bump supporting layer is less than a height of the bump metallization, and wherein the height of the bump supporting layer is greater than or equal to a difference between the height of the bump metallization and half a height of the substrate; after forming the bump metallization on the surface of the electrode layer, removing the insulating auxiliary layer and the electrode layer; and after removing the insulating auxiliary layer and the electrode layer, re-melting the solder metallization.