Patent ID: 9704802
Date: 2017-07-11
CPC Classifications: H01L

Claim:
1. A method of forming conductive vias, comprising: forming a first via opening and a second via opening within a substrate; forming first conductive material of a first conductivity into the first and second via openings, the first conductive material lining sidewalls and a base of the second via opening to less-than-fill the second via opening, the forming of the first conductive material forming the first conductive material to line sidewalls and a base of the first via opening to less-than-fill the first via opening with the first conductive material; forming second conductive material into the second via opening over the first conductive material in the second via opening, the second conductive material being of a second conductivity that is greater than the first conductivity; and all conductive material within the first via opening forming a first conductive via defining a first maximum conductance elevationally through the first conductive via and all conductive material within the second via opening forming a second conductive via defining a second maximum conductance elevationally through the second conductive via that is greater than said first maximum conductance.