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Stacked organic light emitting device having high efficiency and high brightness

  • US 8,951,645 B2
  • Filed: 04/07/2005
  • Issued: 02/10/2015
  • Est. Priority Date: 04/09/2004
  • Status: Active Grant
First Claim
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1. A stacked organic light emitting device comprising:

  • an anode connected to an external power source;

    a cathode connected to the external power source;

    at least two light emitting sections aligned between the anode and the cathode, each light emitting section including a light emitting layer; and

    an internal electrode aligned between the light emitting sections, whereinthe internal electrode is a single-layered internal electrode consisting of a metal or a metal alloy, having a work function below 4.5 eV,wherein one of the at least two light emitting sections includes an organic material layer containing an organic material having an electron affinity above 4 eV, andwherein the organic material layer is formed between the light emitting layer of the one of the at least two light emitting sections and the internal electrode.

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