Patent ID: 7576437

Claim:
A printed circuit board, comprising: an insulating substrate for a printed circuit board on which a semiconductor package having leads is mounted; pads on a surface of the insulating substrate and to which the leads of the semiconductor package are connected; and a solder resist covering the insulating substrate and including openings in the solder resist exposing at least a portion of the pads to which the leads of the semiconductor package are connected, wherein the pads include a solder moving portion for allowing an adhesion solder coated on each pad to move to a shoulder portion of the semiconductor package lead when the semiconductor package lead is connected to the pad, the solder moving portion includes: a first treated surface portion formed by surface treating one end of the pad, to which one end of the semiconductor package lead is connected, with a water-soluble oxidization inhibiting material; and a second treated surface portion formed by surface treating a portion of the pad, to which the lead shoulder portion opposite to the end of the semiconductor package lead is connected, with a plating metal.