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US 2016/0079234 A1Published application
Semiconductor device
AssigneeFujitsu Semiconductor Limited
InventorsDai Kanai, Taiji Ema, Kazushi Fujita
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Abstract
A semiconductor device includes: a first well provided in a semiconductor substrate; a second well provided in the semiconductor substrate, so as to be isolated from the first well; a Schottky barrier diode formed in the first well; and a PN junction diode formed in the second well, with an impurity concentration of the PN junction thereof set higher than an impurity concentration of the Schottky junction of the Schottky barrier diode, and being connected antiparallel with the Schottky barrier diode.
Claims4
A semiconductor device comprising:
- a first well provided in a semiconductor substrate;
- a second well provided in the semiconductor substrate, so as to be isolated from the first well;
- a Schottky barrier diode provided in the first well;
- a transistor formed in the second well;
- a first signal line connected to one terminal of the Schottky barrier diode, and through which a source voltage or a reference voltage is applied;
- and
- a second signal line connected to the other terminal of the Schottky barrier diode and the second well, through which a voltage different from the source voltage and from the reference voltage is applied.
4 more elements
Dependencies are inferred from the claim text.