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PROTECTION CIRCUIT, SEMICONDUCTOR DEVICE, PHOTOELECTRIC CONVERSION DEVICE, AND ELECTRONIC DEVICE

  • US 20100202090A1
  • Filed: 01/26/2010
  • Published: 08/12/2010
  • Est. Priority Date: 02/09/2009
  • Status: Active Grant
First Claim
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1. A protection circuit comprising:

  • a signal line electrically connected to an integrated circuit;

    a first diode provided between the signal line and a first power supply line;

    a second diode provided in parallel to the first diode; and

    a third diode provided between the first power supply line and a second power supply line,wherein the first diode is formed by diode-connecting a transistor, andwherein the second diode is having a PIN junction or a PN junction.

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