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System and method for identifying an individual

  • US 9,008,377 B2
  • Filed: 07/24/2014
  • Issued: 04/14/2015
  • Est. Priority Date: 04/18/2000
  • Status: Expired due to Term
First Claim
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1. A portable information device comprising:

  • a display portion configured to read biological information of a user; and

    a circuit portion configured to identify the user by checking the biological information,wherein the display portion comprises a semiconductor layer and a metal layer over the semiconductor layer,wherein the semiconductor layer includes a first impurity region and a second impurity region,wherein a first edge of the metal layer is aligned with an edge of the first impurity region, andwherein a second edge of the metal layer is aligned with an edge of the second impurity region.

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