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OwnerYoshiaki Nagara, Takanori Murasaki +5inventors
InventorsYoshiaki Nagara, Takanori Murasaki, Kenji Mori, Ichiro Yamamoto, Yoshifumi Kato, Shintaro Kawasaki, Kazuyoshi Takeuchi
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The present invention provides organic EL devices which have on their anode at least a light-emitting layer, an electron-injecting-transporting layer, and a cathode giving an elongated lifetime, organic EL devices giving a superior whiteness, a higher light-emitting efficiency, and an elongated lifetime compared to conventional ones, and color displays using such organic EL devices. On anode (10), hole-injecting-transporting layer (11), light-emitting layer (12), non-light-emitting layer (13), electron-injecting-transporting layer (14), and cathode (15) in this order are laminated. Otherwise, on an anode, a hole-injecting layer, a hole-transporting layer, a red light-emitting layer, a blue light-emitting layer, an electron-transporting layer, an electron-injecting layer, and a cathode in this order are laminated.
An organic EL device, having on its anode at least a light-emitting layer, an electron-injecting-transporting layer, and a cathode in this order, wherein a non-light-emitting layer having an electron-transporting property and having a higher hole-transporting property than said electron-injecting-transporting layer has is laminated between said electron-injecting-transporting layer and said light-emitting layer.
An organic EL device, having on its anode at least an organic light-emitting layer and then a cathode in this order, wherein said organic light-emitting layer consists of a lamination of a red light-emitting layer, containing at least one green light-emitting dopant(s), and of a blue light-emitting layer in this order from said anode side.
Dependencies are inferred from the claim text.