Electrical interconnect from disk drive suspension flexure to PZT motor

摘要

An electrical interconnect from a suspension electrical circuit to a PZT microactuator motor includes copper plated onto a first side of a stainless steel support layer and gold plated onto a second and opposite side of the stainless steel support layer, with the gold plated stainless steel surface bonded to the PZT motor surface by conductive epoxy. The stainless steel may have a via etched into it to the copper surface before the gold plating step which then plates both the stainless steel and the copper with gold, so that the conductive epoxy is in physical and electrical contact with both the gold plated stainless steel and thus in electrical contact with the copper, and also in direct physical and electrical contact with the gold plated copper.

主权项

1. A dual stage actuated suspension having an electrical interconnect contact pad bonded to a microactuator motor, the electrical interconnect contact pad and its bonding comprising:
a stainless steel support layer; an insulative layer on a first portion of the stainless steel and not on a second portion of the stainless steel; a copper layer deposited on the insulative layer on the first portion of the stainless steel, and directly deposited on the second portion of the stainless steel; a protective layer on the stainless steel; and a conductive adhesive bonding the protective layer on the stainless steel directly to the microactuator motor.