Electrical connection structure for piezoelectric element and head suspension

An electrical connection structure for connecting a piezoelectric element and a wiring member to each other with a conductive adhesive, the electrical connection structure comprising:

• an electrode surface formed on the piezoelectric element;
• a terminal surface formed on the wiring member;
• a conductive terminal surface layer formed on the terminal surface and connected to the electrode surface with the conductive adhesive;
• a conductive intermediate layer comprising nickel therethroughout that is formed between the terminal surface and the conductive terminal surface layer;
• and
• at least one recess formed by laser processing on the conductive terminal surface layer in which the at least one recess extends through the conductive terminal surface layer so as to expose one or more portions of the conductive intermediate layer therethroughout to the conductive adhesive without exposing the terminal surface to the conductive adhesive, said exposure of the conductive intermediate layer effecting a bonding strength of the terminal and terminal surface layer to the conductive adhesive that is substantially equal to a bonding strength between the electrode surface of the piezoelectric element and the conductive adhesive.