Patent ID: 9548296
Date: 2017-01-17
CPC Classifications: H01L

Claim:
1. A thyristor-type semiconductor electrostatic protection circuit device for protecting an internal circuit, comprising: a semiconductor substrate (Psub) defining a first direction and a second direction perpendicular to the first direction, in a plan view of the substrate; an element isolation insulating film (IN) formed over the semiconductor substrate; a plurality of spaced-apart first high-concentration first-conductivity type regions (NP a plurality of spaced-apart first high-concentration second-conductivity type regions (PP a second high-concentration first-conductivity type region (NP each of the plurality of first high-concentration second-conductivity type regions (PP each of the plurality of first high-concentration first-conductivity type regions (NP each two adjacent ones of the first high-concentration first-conductivity type regions (NP in a cross-sectional view of the device passing through both the plurality of first high-concentration first-conductivity type regions (NP the plurality of first high-concentration first-conductivity type regions (NP the plurality of first high-concentration second-conductivity type regions (PP the second high-concentration first-conductivity type region (NP