Patent ID: 9646854
Date: 2017-05-09
CPC Classifications: C23C,H01L,H05K

Claim:
1. A method for metallizing a dielectric layer, comprising: patterning the dielectric layer to form one or more patterned surfaces on the dielectric layer, wherein the dielectric layer is doped with an activator precursor material that is dispersed through the dielectric layer, and wherein the dielectric layer is patterned with a plasma etching process; selectively forming a seed layer on the one or more patterned surfaces of the dielectric layer, wherein forming the seed layer comprises a laser assisted local activation of the activator precursor on the one or more patterned surfaces of the dielectric layer, and wherein a laser intensity of the laser used in the laser assisted local activation is lower than a laser intensity needed to ablate the dielectric layer; and exposing the dielectric layer to an electroless plating bath comprising metal ions and a reducing agent, wherein the seed layer is a catalyst that allows the reducing agent to reduce the metal ions, thereby selectively depositing the metal ions on surfaces of the dielectric layer where the seed layer is formed.