Invention Grant
- Patent Title: Multilayer bond pads for hard disk drive suspensions
- Patent Title (中): 用于硬盘驱动器悬架的多层接合垫
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Application No.: US13657478Application Date: 2012-10-22
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Publication No.: US08564909B1Publication Date: 2013-10-22
- Inventor: Christopher Dunn , Peter Hahn
- Applicant: Magnecomp Corporation
- Applicant Address: US CA Murrieta
- Assignee: Magnecomp Corporation
- Current Assignee: Magnecomp Corporation
- Current Assignee Address: US CA Murrieta
- Agency: Intellectual Property Law Offices of Joel Voelzke, APC
- Main IPC: G11B5/48
- IPC: G11B5/48

Abstract:
A method is presented for creating multilayer bond pads for bonding a disk drive suspension circuit to a read-write head slider. The multilayer bond pads eliminate the need for vias to transition signals between metallization layers within a suspension circuit. The method includes the steps of forming an aperture through an insulating material that has a metalized first side, depositing a second metal layer on the second side and within the aperture, the second metal layer forming an electrical contact with the first metal layer, selectively removing portions of the second metal layer within the aperture and corresponding adjacent portions of the first metal layer thereby dividing the second metal layer and respectively adjacent portions of the first metal layer into a plurality of electrically separated circuit bond pads, each bond pad including respective portions of the first metal layer and respectively adjacent portions of the second metal layer.
Information query
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