Patent ID: 6941957
Filing Date: 2005-09-13
Classification: H01L,Y10S

Abstract:
1. A combination comprising: an apparatus for pretreating a semiconductor wafer prior to electroplating and a semiconductor; the apparatus comprising a wafer jig constructed and arranged to carry the semiconductor wafer therein, and wherein the wafer jig includes an opening therein for exposing a top surface of the semiconductor wafer, a wetting solution supply tank connected to a pump, and the pump connected to a spray module for pumping wetting solution through a spray module and onto a semiconductor wafer carried in the wafer jig, and wherein the spray module includes a plurality of spray nozzles each constructed and arranged to spray wetting solution particles having a diameter less than 100 micrometers so that the entire top surface of the wafer is covered by the wetting solution and so that the top surface of the wafer covered by the wetting solution may be subsequently electroplated; the semiconductor wafer comprising a contact pad, and an under bump metallurgy overlying the contact pad, and a photoresist layer overlying the under bump metallurgy, and wherein the photoresist layer has an opening therein down to the under bump metallurgy and aligned with the contact paid and wherein the opening has a diameter less than 100 micrometers and so that the entire top surface of the wafer including the under bump metallurgy is covered by the wetting solution and so that the top surface of the wafer covered by the wetting solution may be subsequently electroplated.