Organic electroluminescent device and display using same
First Claim
Patent Images
1. An organic electroluminescent device comprising:
- at least two or more emitting layers between an anode and a cathode, and an intermediate electrode layer being interposed between emitting layers, the intermediate electrode layer being a single layer or a multilayer structure of a plurality of layers, at least one of the layers comprising a semiconductive material having a resistivity of 0.001 to 10,000 Ω
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cm.
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Abstract
An organic electroluminescent device including: at least two or more emitting layers (4), (8) between an anode (10) and a cathode (2), and an intermediate electrode layer (6) being interposed between emitting layers (4), (8), the intermediate electrode layer (6) being a single layer or a multilayer structure of a plurality of layers, at least one of the layers (6) including a semiconductive material having a resistivity of 0.001 to 10,000 Ω·cm. The device and a display using the same have a high efficiency and long life time.
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Citations
28 Claims
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1. An organic electroluminescent device comprising:
at least two or more emitting layers between an anode and a cathode, and an intermediate electrode layer being interposed between emitting layers, the intermediate electrode layer being a single layer or a multilayer structure of a plurality of layers, at least one of the layers comprising a semiconductive material having a resistivity of 0.001 to 10,000 Ω
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cm.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 24, 26, 27, 28)
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13. An organic electroluminescent device comprising:
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at least one or more emitting layers between an anode and a cathode, the cathode comprising at least one metal oxide, and the cathode having a light transmittance of 80% or more. - View Dependent Claims (14, 15, 16, 17)
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18. An organic electroluminescent device comprising:
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one or more emitting layers between an anode and a cathode, and bipolar charge injection layers being interposed between the anode and at least one of the emitting layers and between the cathode and at least one of the emitting layers. - View Dependent Claims (19, 20, 21, 22, 23)
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25. An organic electroluminescent device comprising:
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at least one or more emitting layers between an anode and a cathode, the cathode comprising at least one donor and at least one acceptor comprising a metal oxide, and the cathode having a light transmittance of 80% or more.
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Specification