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Contact type image sensor having an organic type thin film light emitting element

  • US 5,105,238 A
  • Filed: 09/28/1990
  • Issued: 04/14/1992
  • Est. Priority Date: 09/29/1989
  • Status: Expired due to Fees
First Claim
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1. A contact type image sensor, comprising:

  • an optically transparent substrate having first and second main surfaces;

    an illumination source disposed on said first main surface of said transparent substrate, said illumination source being driven by a direct current and having an organic type thin film light emitting element, said organic type thin film light emitting element having an optically transparent anode electrode, a hole transport thin film disposed on said anode electrode, an electron transport organic fluorescent thin film disposed on said hole transport thin film, and a cathode electrode disposed on said electron transport organic fluorescent thin film, said organic type thin film light emitting element being covered with a sealing material; and

    a sensor section disposed on said second main surface of said transparent substrate so as to face said organic type thin film emitting element, said sensor section having a thin film photo sensitive element.

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