PROTECTIVE DIODE AND SEMICONDUCTOR DEVICE INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a protective diode having a small PN-junction capacitance and to provide a semiconductor device including the same.

SOLUTION: A protective diode includes: a semiconductor substrate having a first region, a second region surrounding the first region, and a third region surrounding the second region; a first insulating layer provided between the second region and the third region; a first-conductivity-type semiconductor provided in the third region; a second-conductivity-type semiconductor provided in the second region; and a capacitance relaxation layer provided in the first region. A semiconductor device includes: the protective diode; a first pad connected to the protective diode; a protective diode having a structure that does not have the capacitance relaxation layer; and the second pad connected to the protective diode having a structure that does not have the capacitance relaxation layer.

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