Invention Grant
US07960198B2 Method of making a semiconductor device with surge current protection
有权
制造具有浪涌电流保护的半导体器件的方法
- Patent Title: Method of making a semiconductor device with surge current protection
- Patent Title (中): 制造具有浪涌电流保护的半导体器件的方法
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Application No.: US11819646Application Date: 2007-06-28
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Publication No.: US07960198B2Publication Date: 2011-06-14
- Inventor: Igor Sankin , Joseph Neil Merrett
- Applicant: Igor Sankin , Joseph Neil Merrett
- Applicant Address: US MS Starkvilles
- Assignee: Semisouth Laboratories
- Current Assignee: Semisouth Laboratories
- Current Assignee Address: US MS Starkvilles
- Agency: Morris, Manning & Martin, LLP
- Agent Christopher W. Raimund
- Main IPC: H01L31/075
- IPC: H01L31/075 ; H01L33/00

Abstract:
A wide bandgap semiconductor device with surge current protection and a method of making the device are described. The device comprises a low doped n-type region formed by plasma etching through the first epitaxial layer grown on a heavily doped n-type substrate and a plurality of heavily doped p-type regions formed by plasma etching through the second epitaxial layer grown on the first epitaxial layer. Ohmic contacts are formed on p-type regions and on the backside of the n-type substrate. Schottky contacts are formed on the top surface of the n-type region. At normal operating conditions, the current in the device flows through the Schottky contacts. The device, however, is capable of withstanding extremely high current densities due to conductivity modulation caused by minority carrier injection from p-type regions.
Public/Granted literature
- US20080160685A1 Semiconductor device with surge current protection and method of making the same Public/Granted day:2008-07-03
Information query
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