Edge termination with improved breakdown voltage

Active solid-state devices (e.g. – transistors – solid-state diode – Schottky barrier – With means to prevent edge breakdown

Reexamination Certificate

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Details

C257S487000, C257SE29023

Reexamination Certificate

active

07923804

ABSTRACT:
A MOSFET switch which has a low surface electric field at an edge termination area, and also has increased breakdown voltage. The MOSFET switch has a new edge termination structure employing an N-P-N sandwich structure. The MOSFET switch also has a polysilicon field plate configuration operative to enhance any spreading of any depletion layer located at an edge of a main PN junction of the N-P-N sandwich structure.

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