MOSFET antiparasitic layer

摘要

A semiconductor device which is provided, for the purpose of eliminating parasitic MOSFETs formed between at least two circuit elements (such as MOSFET, TRANSISTOR, RESISTOR, and the like) on a semiconductor substrate, with a high impurity concentration layer of the same conduction type as the substrate in a manner such that the layer is not only in the semiconductor substrate between said circuit elements but is also partially overlapped by the circuit element regions.