Active Matrix OLED Displays with High Stability and Luminous Efficiency by New Doping Method

  • Shibata, Kenichi (SANYO Electric Co., Ltd., Materials and Devices Development Center Business Unit) ;
  • Hamada, Yuji (SANYO Electric Co., Ltd., Materials and Devices Development Center Business Unit) ;
  • Kanno, Hiroshi (SANYO Electric Co., Ltd., Materials and Devices Development Center Business Unit) ;
  • Takahashi, Hisakazu (SANYO Electric Co., Ltd., Materials and Devices Development Center Business Unit) ;
  • Mameno, Kazunobu (SANYO Electric Co., Ltd., Display Company, R&D Business Unit)
  • Published : 2003.07.09

Abstract

We have developed the active matrix OLED displays with a high efficiency red emission material which uses an emitting assist (EA) dopant system. The EA dopant (rubrene) did not itself emit but assisted the energy transfer from the host ($Alq_s$) to the red emitting dopant(DCM2). A stable red emission (chromaticity coordinates: x=0.64, y=0.36) was obtained in this cell within the luminance range of 100 - 4000 $cd/m^2$ By using EA dopant system, we can realize the reduction of the power consumption of the OLED display..

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