Patent ID: 8441761

Claim:
A disk drive suspension whose pitch static attitude (PSA) has an improved resistance to environmental changes, the suspension comprising: a load beam and a gimbal mounted thereto; the gimbal having two metal gimbal outrigger arms supporting a gimbal tongue on which a transducer head is mounted; a flexible circuit electrically connected to the transducer head, the flexible circuit comprising an insulating layer, at least one metal signal trace on the insulating layer, and a protective cover layer on the metal signal trace; the flexible circuit having a top and a bottom surface, and having: a first and supported portion extending over and supported on its bottom surface by a support layer, the support layer comprising a first non-hygroscopic material; and two suspended circuit portions that are not supported on their bottom surfaces by said support layer; wherein the improvement comprises: on each suspended circuit portion, two unconnected patches of a second non-hygroscopic material adhered on the bottom surfaces thereof in areas in which the suspended circuit portion extends alongside a respective metal gimbal outrigger arm.