Invention Grant
- Patent Title: Shielded gate trench MOSFET package
- Patent Title (中): 屏蔽栅沟MOSFET封装
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Application No.: US13212940Application Date: 2011-08-18
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Publication No.: US08829603B2Publication Date: 2014-09-09
- Inventor: Sik Lui , Yi Su , Daniel Ng , Daniel Calafut , Anup Bhalla
- Applicant: Sik Lui , Yi Su , Daniel Ng , Daniel Calafut , Anup Bhalla
- Applicant Address: US CA Sunnyvale
- Assignee: Alpha and Omega Semiconductor Incorporated
- Current Assignee: Alpha and Omega Semiconductor Incorporated
- Current Assignee Address: US CA Sunnyvale
- Agency: JDI Patent
- Agent Joshua D. Isenberg
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L23/64 ; H01L29/78 ; H01L29/40 ; H01L29/423 ; H01L23/00

Abstract:
A shielded gate trench field effect transistor can be formed on a substrate having an epitaxial layer on the substrate and a body layer on the epitaxial layer. A trench formed in the body layer and epitaxial layer is lined with a dielectric layer. A shield electrode is formed within a lower portion of the trench. The shield electrode is insulated by the dielectric layer. A gate electrode is formed in the trench above the shield electrode and insulated from the shield electrode by an additional dielectric layer. One or more source regions formed within the body layer is adjacent a sidewall of the trench. A source pad formed above the body layer is electrically connected to the one or more source regions and insulated from the gate electrode and shield electrode. The source pad provides an external contact to the source region. A gate pad provides an external contact to the gate electrode. A shield electrode pad provides an external contact to the shield electrode. A resistive element can be electrically connected between the shield electrode pad and the source lead in the package.
Public/Granted literature
- US20130043527A1 SHIELDED GATE TRENCH MOSFET PACKAGE Public/Granted day:2013-02-21
Information query
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