Patent ID: 6165912
Filing Date: 2000-12-26
Classification: C23C,H01L,H05K

Abstract:
A method of electrolessly depositing a metal onto an electronic component comprising:(a) loading a plurality of electronic components in an enclosable single vessel;(b) forming an activation solution comprising at least one seeding agent, wherein the activation solution is substantially free of oxygen;(c) feeding the activation solution into the vessel, contacting the electronic components in the vessel with the activation solution for a first contact time, and removing the activation solution from the vessel, wherein the activation solution is contacted with the electronic components a single time, without reuse of the activation solution;(d) forming a metal deposition solution comprising at least one source of metal ions, at least one reducing agent, and oxygen;(e) feeding the metal deposition solution into the vessel and contacting the electronic components in the vessel with the metal deposition solution for a second contact time to deposit metal onto the surfaces of the electronic components, wherein the metal deposition solution is contacted with the electronic components a single time, without reuse of the metal deposition solution;(f) exposing the electronic components to sonic energy for at least a portion of the second contact time; and(g) removing the metal deposition solution from the vessel.