Invention Grant
- Patent Title: Device and fabrication of MOS device with island region
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Application No.: US16051016Application Date: 2018-07-31
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Publication No.: US10535764B2Publication Date: 2020-01-14
- Inventor: Anup Bhalla , Xiaobin Wang , Ji Pan , Sung-Po Wei
- Applicant: Alpha and Omega Semiconductor Limited
- Applicant Address: BM
- Assignee: Alpha and Omega Semiconductor Limited
- Current Assignee: Alpha and Omega Semiconductor Limited
- Current Assignee Address: BM
- Agency: Van Pelt, Yi & James LLP
- Main IPC: H01L29/78
- IPC: H01L29/78 ; H01L29/10 ; H01L29/423 ; H01L29/66 ; H01L29/872 ; H01L21/265 ; H01L29/417 ; H01L29/06 ; H01L29/165 ; H01L29/45 ; H01L29/47

Abstract:
Fabricating a semiconductor device includes: forming a first gate trench and a second gate trench in an epitaxial layer overlaying a semiconductor substrate; depositing gate material in the first gate trench to form a first gate and depositing gate material in the second gate trench to form a second gate; forming a body; forming a source; forming an active region contact trench that extends through the source and the body, and a gate contact trench within the second gate; forming an island region under the active region contact trench and disconnected from the body, the island region having an opposite polarity as the epitaxial layer; and disposing a first electrode within the active region contact trench and a second electrode within the gate contact trench.
Public/Granted literature
- US20180337274A1 DEVICE AND FABRICATION OF MOS DEVICE WITH ISLAND REGION Public/Granted day:2018-11-22
Information query
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