| 摘要 |
An electrostatic protection device for a semiconductor circuit for protecting an internal circuit from static electricity applied to the pad includes a first conductivity type semiconductor substrate; second conductivity type diffusion regions formed on the surface of the semiconductor substrate at regular intervals into a dot type; isolation structures formed on the surface of the semiconductor substrate to respectively surround the second conductivity type diffusion regions; and first conductivity type diffusion regions formed on the surface of the semiconductor substrate outside of the second conductivity type diffusion regions and the isolation regions.
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