Patent ID: 8199442
Filing Date: 2012-06-12
Classification: G11B,H01L

Abstract:
1. An electrical connecting structure for a piezoelectric element, the piezoelectric element being incorporated in a piezoelectric actuator that is arranged between a base and a magnetic head and minutely moves the magnetic head in a sway direction according to a deformation of the piezoelectric element, the electrical connecting structure comprising: an electrode arranged on the piezoelectric element as part of the piezoelectric actuator; a terminal having at least an electric insulating layer and wiring laid on the electric insulating layer, configured to supply electricity to the electrode, wherein the electrode and the terminal face each other with a gap therebetween, the electric insulating layer being on a piezoelectric element side of the terminal; an opening through at least the electric insulating layer of the terminal; a liquid stopper arranged around the opening between the electrode and the terminal within said gap; a liquid conductive adhesive injected into the opening and spanning said gap to provide physical and electrical communication between the electrode and the wiring; and wherein the liquid stopper has a size and location for narrowing the gap between the electrode and the terminal without spanning the gap so as to leave a narrowed gap of a size adapted for allowing capillary-type diffusion of the conductive adhesive into the narrowed gap, while stopping diffusion beyond the liquid stopper, when the conductive adhesive is injected into the opening.