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Static event detection/protection device

  • US 6,172,496 B1
  • Filed: 09/16/1996
  • Issued: 01/09/2001
  • Est. Priority Date: 09/18/1995
  • Status: Expired due to Fees
First Claim
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1. An electrostatic discharge event detector comprising:

  • a substrate;

    at least one conductor patterned from a metal layer deposited on the substrate, the conductor acting as an antenna for receiving a voltage produced by an electro-static discharge;

    a magneto-optic element formed from a film deposited on the substrate and patterned such that the magneto-optic element is formed next to the conductor, the magneto-optic element having a magnetized state and being capable of switching to a demagnetized state in the presence of a magnetic field having a field strength that exceeds a predetermined field strength at the location of the magneto-optic element;

    whereby the magneto-optic element switches from the magnetized state to the demagnetized state when the conductor receives a voltage from an electrostatic discharge that induces a current to flow through the conductor sufficient to generate a magnetic field around the conductor that exceeds the predetermined field strength of the magneto-optic element.

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