Patent ID: 9526184
Filing Date: 2016-12-20
CPC Classification: C23C,H05K

Claim Text:
1. A method for selectively plating a via of a multi-layered substrate, the method comprising: forming a via through a multi-layered substrate, the via having a first diameter and a first inner surface; depositing a first conductive material into the via to form a plated via including a first plating on the first inner surface; modifying the plated via to comprise a medial portion, a first outer portion, and a second outer portion, wherein: depositing a second conductive material, where the second conductive material is a conductive polymer or contains a concentration of carbon or graphite, onto at least the second inner surface and the third inner surface of the modified plated via; removing the remaining first conductive material from the medial portion by applying an etchant to the modified plated via; and depositing a third conductive material into the modified plated via to form a second plating on the second conductive material deposited on the second and third inner surfaces of the modified plated via.