Patent ID: 6590913
Filing Date: 2003-07-08
Classification: H01L,H01S

Abstract:
A microfabricated device, comprising:a substrate; a multi-layer barrier, said multi-layer barrier including a first layer coupled to a second layer, a third layer coupled to the second layer, a fourth layer coupled to the third layer, a fifth layer coupled to the fourth layer, wherein the first, third, and fifth layers have a different electronegativity relative to said second and fourth layers, wherein the first, second, third, fourth and fifth layers are annealed to the extent that interfaces of the layers are fused together and include intermetallics comprised of a first element and a second element, wherein the first element has a relatively low electronegativity and the second element has a relatively high electronegativity; a compliant layer coupled to said fifth layer and said substrate, wherein said compliant layer comprises gold; and bonding material disposed on said first layer.