Patent ID: 6924440
Filing Date: 2005-08-02
Classification: H05K

Abstract:
1. A printed wiring board, comprising: a base having an electrode region configured to receive an electrode associated with an electronic element; a terminal region proximate the electrode region; a conductive paste deposited on at least a portion of the terminal region, the conductive paste having an oxidation-reduced region thereon, the oxidation-reduced region formed on only a portion of the conductive paste in said terminal region by application of an acid to the conductive paste, wherein the acid removes oxidation on the surface of said conductive paste; and an oxidation-prevention layer formed only on the oxidation-reduced region by deposition of a flux on the oxidation-reduced region, application of a solder to the flux, and blowing of a heated gas by the solder, the oxidation-prevention layer adapted to bond the electrode associated with the electronic element to the conductive paste by soldering, when the electrode is present in the electrode region.