Invention Grant
- Patent Title: Laser ablation for wirebonding surface on as-cast surface
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Application No.: US14938234Application Date: 2015-11-11
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Publication No.: US10245682B2Publication Date: 2019-04-02
- Inventor: Jared Yagoda , Dana Gradler
- Applicant: Continental Automotive Systems, Inc.
- Applicant Address: US MI Auburn Hills
- Assignee: Continental Automotive Systems, Inc.
- Current Assignee: Continental Automotive Systems, Inc.
- Current Assignee Address: US MI Auburn Hills
- Main IPC: H05K3/26
- IPC: H05K3/26 ; B23K20/00 ; B23K26/352

Abstract:
A method of removing material from a surface, which includes the steps of providing a base layer, at least one layer attached to the base layer, an intermediate finish surface, and a bonding interface surface. The intermediate finish surface is formed by removing the at least one layer and a portion of the base layer during a material removal process. The bonding interface surface is formed by a polishing process applied to the intermediate finish surface. There is an oxidation layer which is part of the base layer, as well as a mold release layer and a contamination layer, both of which are part of the at least one layer. The material removal process involves laser etching the at least one layer to create the intermediate finish surface, and the polishing process includes applying a second laser etching to the intermediate finish surface, forming the bonding interface surface.
Public/Granted literature
- US20170135195A1 LASER ABLATION FOR WIREBONDING SURFACE ON AS-CAST SURFACE Public/Granted day:2017-05-11
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