Dual stage actuated suspension having adhesive overflow control channels

摘要

A dual stage actuated suspension has microactuators that are adhered to the suspension by adhesive such as epoxy. The epoxy is contained within an adhesive containment vessel defined by walls of an insulating material such as polyimide. Adhesive overflow channels are formed within the polyimide to receive and channel any excess epoxy that overflows over the polyimide wall. The channels may have increasing width to help draw the excess epoxy toward a centrally located reservoir.

主权项

1. A dual stage actuated suspension comprising:
a base portion comprising a metal support layer, an insulation layer comprising an insulating material on the metal support layer, and a signal conductor layer on the insulation layer; a gimbaled portion on which a transducer head is mounted; a microactuator adhered to the support layer, the microactuator configured to effect fine movements of the transducer head disposed on the gimbaled portion; an adhesive containment structure, the adhesive containment structure comprising a first portion of the insulating material and a second portion of the insulating material, the second portion of the insulating material at least partially disposed underneath the microactuator, the first and second portions of insulating material being separated by a gap; adhesive disposed within the gap, the adhesive adhering the microactuator to the support layer; an adhesive overflow channel formed in the second portion of insulating material, the adhesive overflow channel being configured to hold adhesive that overflows from the adhesive containment structure over a top surface of the second portion of insulating material during a process of adhering the microactuator to the support layer via the adhesive.