Patent ID: 7378345

Claim:
A metal electroplating process of an electrically connecting pad structure of a circuit board, comprising the steps of: providing a circuit board with a patterned circuit layer formed on at least one surface thereof, wherein the circuit layer defines a plurality of electrically connecting pads and electroplating lines connected to the electrically connecting pads; forming a patterned resist layer on the circuit layer of the circuit board with the electroplating lines being covered by the patterned resist layer and the electrically connecting pads being exposed from the patterned resist layer; performing an electroplating process so as to form a metal protection layer on the electrically connecting pads exposed from the patterned resist layer; removing the patterned resist layer; forming a solder mask layer on the circuit board, the electrically connecting pads with the metal protection layer thereon and the electroplating lines being exposed from the solder mask layer; and removing the electroplating lines not covered by the metal protection layer and yet exposed from the solder mask layer such that a broken circuit can be formed between the electrically connecting pads and the electroplating lines, wherein each of the end of the broken circuit of the electroplating lines is free of the metal protection layer.