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OLED having stacked organic light-emitting units

  • US 8,680,693 B2
  • Filed: 01/17/2007
  • Issued: 03/25/2014
  • Est. Priority Date: 01/18/2006
  • Status: Active Grant
First Claim
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1. A stacked organic light emitting device, comprising a first conductive layer, at least one intermediate conductive layer and a second conductive layer, and light emitting units disposed between the conductive layers,wherein at least two non-neighboring conductive layers among the conductive layers are conductive layers belonging to Group 1 such that they are electrically connected with each other to a common potential;

  • one of the conductive layers which is not electrically connected with the conductive layers belonging to Group 1 to a common potential is a conductive layer belonging to Group 2, or two or more non-neighboring conductive layers of the conductive layers which are not electrically connected with the conductive layers belonging to Group 1 to a common potential are conductive layers belonging to Group 2 such that they are electrically connected with each other to a common potential; and

    the conductive layers belonging to Group 1 and the conductive layers belonging to Group 2 are connected with each other via a voltage regulator for alternately applying a positive voltage and a negative voltage by a sine wave alternating current voltage, a direct current voltage or a pulse voltage,wherein the voltage regulator is provided with a means of modulating the width or height of the sine wave or the pulse, andat least one intermediate conductive layer is formed of Ca.

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