Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material
Reexamination Certificate
2007-09-25
2007-09-25
Ha, Nathan W. (Department: 2814)
Semiconductor device manufacturing: process
Coating with electrically or thermally conductive material
To form ohmic contact to semiconductive material
Reexamination Certificate
active
10724938
ABSTRACT:
A ball-limiting metallurgy includes a substrate, a barrier layer formed over the substrate, an adhesion layer formed over the barrier layer, a first solderable layer formed over the adhesion layer, a diffusion barrier layer formed over the adhesion layer, and a second solderable layer formed over the diffusion barrier layer.
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Cheng Yu-Ting
Chiras Stefanie Ruth
Henderson Donald W.
Kang Sung-Kwon
Kilpatrick Stephen James
F. Chau & Associates LLC
Ha Nathan W.
International Business Machines - Corporation
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