- Patent Title: Multi material secondary metallization scheme in MEMS fabrication
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Application No.: US13308545Application Date: 2011-12-01
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Publication No.: US08268156B2Publication Date: 2012-09-18
- Inventor: Montray Leavy
- Applicant: Montray Leavy
- Applicant Address: US CA Cupertino
- Assignee: Advantest America, Inc.
- Current Assignee: Advantest America, Inc.
- Current Assignee Address: US CA Cupertino
- Agent Manuel F. de la Cerra
- Main IPC: C25D5/10
- IPC: C25D5/10

Abstract:
Processes are provided herein for the fabrication of MEMS utilizing both a primary metal that is integrated into the final MEMS structure and two or more sacrificial secondary metals that provide structural support for the primary metal component during machining. A first secondary metal is thinly plated around the primary metal and over the entire surface of the substrate without using photolithography. A second secondary metal, is then thickly plated over the deposited first secondary metal without using photolithography. Additionally, techniques are disclosed to increase the deposition rate of the first secondary metal between primary metal features in order to prevent voiding and thus enhance structural support of the primary metal during machining.
Public/Granted literature
- US20120070980A1 MULTI MATERIAL SECONDARY METALLIZATION SCHEME IN MEMS FABRICATION Public/Granted day:2012-03-22
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