Patent ID: 9737947
Date: 2017-08-22
CPC Classifications: B23K,H01L,Y10T

Claim:
1. A method for processing a microfeature workpiece, comprising: applying a volume of first material to a target location in a via of the microfeature workpiece, wherein the volume of first material includes a first metallic constituent, and wherein the target location includes a second material including a second metallic constituent, the first metallic constituent being different than the second metallic constituent; elevating a temperature of the volume of first material while the volume of first material is applied to the target location to alloy the first metallic constituent and the second metallic constituent so that the first metallic constituent is alloyed generally throughout the volume of first material; achieving a target flowability of the volume of first material by selecting a thickness of the second material at the target location based at least in part on a quantity of the second metallic constituent available to alloy with the first metallic constituent when the temperature is elevated, wherein the thickness of the second material is reduced from an initial thickness to a reduced thickness by alloying the first and second metallic constituents; exposing the volume of first material at a first side by removing a portion of a substrate from the microfeature workpiece from the first side; and exposing the volume of first material at a second side by removing a portion of the alloyed metallic constituent from the via from the second side.