Patent ID: 9057741
Filing Date: 2015-06-16
Classification: G01R

Abstract:
1. A method of forming a probing apparatus, said method comprising: applying a first masking layer over a substrate; patterning said first masking layer to form a plurality of first cavities extending to a top surface of said substrate; depositing a first conductive material in said plurality of first cavities; planarizing said patterned first masking layer and said deposited first conductive material to form a plurality of first columnar conductive structures embedded in said patterned first masking layer; applying a second masking layer over said patterned first masking layer; patterning said second masking layer to form a plurality of second cavities extending to top surfaces of said plurality of first columnar conductive structures; and depositing a second conductive material in said plurality of second cavities to form a plurality of second columnar conductive structures, wherein a probing apparatus comprising a plurality of conductive probes located on said substrate is formed, and said plurality of conductive probes comprises said plurality of first columnar conductive structures and said plurality of second columnar conductive structures.