Metal oxide semiconductor device and method manufacturing the sa

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

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257409, H01L 3300, H01L 2978

Patent

active

061539112

ABSTRACT:
A p-type high concentration doped region is formed in a p-type semiconductor substrate between a n-type doped region as part of an input protection circuit and another n-type doped region as part of internal circuitry. A plate is divided into two over the high concentration doped region. The high concentration doped region suppresses generation of a parasitic MOS transistor with the plate for a gate, one of the n-type doped regions for a source, and the other for a drain.

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