Invention Grant
- Patent Title: High voltage MOSFET devices and methods of making the devices
- Patent Title (中): 高压MOSFET器件及其制造方法
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Application No.: US14456110Application Date: 2014-08-11
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Publication No.: US09214572B2Publication Date: 2015-12-15
- Inventor: Sujit Banerjee , Kevin Matocha , Kiran Chatty
- Applicant: Monolith Semiconductor Inc.
- Applicant Address: US TX Round Rock
- Assignee: MONOLITH SEMICONDUCTOR INC.
- Current Assignee: MONOLITH SEMICONDUCTOR INC.
- Current Assignee Address: US TX Round Rock
- Agency: Morris, Manning & Martin, LLP
- Agent Christopher W. Raimund
- Main IPC: H01L29/808
- IPC: H01L29/808 ; H01L21/22 ; H01L29/06 ; H01L29/66 ; H01L29/78 ; H01L29/47

Abstract:
A SiC MOSFET device having low specific on resistance is described. The device has N+, P-well and JFET regions extended in one direction (Y-direction) and P+ and source contacts extended in an orthogonal direction (X-direction). The polysilicon gate of the device covers the JFET region and is terminated over the P-well region to minimize electric field at the polysilicon gate edge. In use, current flows vertically from the drain contact at the bottom of the structure into the JFET region and then laterally in the X direction through the accumulation region and through the MOSFET channels into the adjacent N+ region. The current flowing out of the channel then flows along the N+ region in the Y-direction and is collected by the source contacts and the final metal. Methods of making the device are also described.
Public/Granted literature
- US20150084066A1 HIGH VOLTAGE MOSFET DEVICES AND METHODS OF MAKING THE DEVICES Public/Granted day:2015-03-26
Information query
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