Invention Grant
US08476691B1 High reliability-high voltage junction termination with charge dissipation layer
有权
具有电荷耗散层的高可靠性 - 高压结端接
- Patent Title: High reliability-high voltage junction termination with charge dissipation layer
- Patent Title (中): 具有电荷耗散层的高可靠性 - 高压结端接
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Application No.: US13030907Application Date: 2011-02-18
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Publication No.: US08476691B1Publication Date: 2013-07-02
- Inventor: Dumitru Sdrulla , Duane Edward Levine , James M. Katana , Martin David Birch
- Applicant: Dumitru Sdrulla , Duane Edward Levine , James M. Katana , Martin David Birch
- Applicant Address: US OR Bend
- Assignee: Microsemi Corporation
- Current Assignee: Microsemi Corporation
- Current Assignee Address: US OR Bend
- Agency: Marger Johnson & McCollom, P.C.
- Main IPC: H01L21/336
- IPC: H01L21/336 ; H01L29/78

Abstract:
A high voltage power semiconductor device includes high reliability-high voltage junction termination with a charge dissipation layer. An active device area is surrounded by a junction termination structure including one or more regions of a polarity opposite the substrate polarity. A tunneling oxide layer overlays the junction termination area surrounding the active device area in contact with the silicon substrate upper surface. A layer of undoped polysilicon overlays the tunneling oxide layer and spans the junction termination area, with connections to an outer edge of the junction termination structure and to a grounded electrode inside of the active area. The tunneling oxide layer has a thickness that permits hot carriers formed at substrate upper surface to pass through the tunneling oxide layer into the undoped polysilicon layer to be dissipated but sufficient to mitigate stacking faults at the silicon surface.
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