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US 6,585,902 B1Granted
Non-homogeneous laminate material for suspension with vibration dampening
AssigneeInternational Business Machines Corporation
InventorsVictor Wing-Chun Shum, Randall George Simmons
Life of this patent
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Abstract
An integrated lead suspension is formed from a five layer laminate of stainless steel, polyimide and copper. Prior to lamination, the steel layer has preformed voids which may have various configurations. The voids are provided for intentionally weakening high strain flexure areas in the suspension so that strain energy can be dissipated more effectively.
Claims4
A method for manufacturing an integrated lead suspension for a hard disk drive, comprising:
- (a) providing a metal support layer, at least one dielectric layer, and at least one conductor layer;
- (b) forming a void in the support layer at a selected location;
- then
- (c) laminating the dielectric layer between the support and conductor layers to form a laminate;
- and then
- (d) etching the laminate of step (c) to form a lead suspension, wherein said void intentionally weakens a selected high strain area in the suspension to form a constraint damping layer;
- and wherein step (c) comprises laminating a second dielectric layer on a side of the support layer opposite said first mentioned dielectric layer, and a second conductor layer on said second dielectric layer to form a five layer laminate with the first and second conductor layers being on a top and a bottom of the five layer laminate.
4 more elements
A method for manufacturing an integrated lead suspension for a hard disk drive, comprising:
- (a) providing a metal support layer, a pair of dielectric layers, and a pair of conductor layers;
- (b) forming a plurality of voids in an area of flexure of the support layer;
- then
- (c) laminating one of the dielectric layers on each side of the support layer, and laminating one of the conductor layers on an outer surface of each of the dielectric layers to form a laminate;
- and then
- (d) applying an etching substance to the laminate of step (c) and etching at least one of the dielectric layers to form a suspension wherein said voids intentionally weaken high strain areas in the suspension to form constraint damping layers.
3 more elements
Dependencies are inferred from the claim text.