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Mechanisms for detecting exposure to water in an electronic device

  • US 8,482,305 B2
  • Filed: 08/11/2010
  • Issued: 07/09/2013
  • Est. Priority Date: 08/11/2010
  • Status: Active Grant
First Claim
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1. An electronic device comprising:

  • a component carrier having formed therein a first water sensor, the first water sensor having a first patterned conductor piece formed in a metal layer of the component carrier and a bridge being an amount of water-soluble conductive glue filling an electrically insulating gap between the first patterned conductor piece and another conductor in the component carrier to form a conductive path between the first patterned conductor piece and the another conductor, wherein the conductive path dissolves and an open circuit forms between the first patterned conductor piece and the another conductor in response to exposure of the bridge to water; and

    a sensing circuit coupled to the first patterned conductor piece and the another conductor to detect changes in impedance of the path.

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