Organic electroluminescent element, lighting device and display device
AssigneeKonica Minolta Holdings, Inc.
InventorsNoriko Yasukawa, Rie Katakura, Hideo Taka
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AssigneeKonica Minolta Holdings, Inc.
InventorsNoriko Yasukawa, Rie Katakura, Hideo Taka
Estimating the term…
Disclosed is an organic EL device element having high external quantum efficiency and long life time. A lighting device and a display device each using the organic EL device element are also disclosed. The organic EL element comprises plural organic compound layers including a light-emitting layer and at least one hole transport layer, interposed between an anode and a cathode, and a phosphorescent light-emitting compound contained in the light-emitting layer emits light. The organic EL device is characterized in that at least one hole-transport layer contains two or more polymerizable compounds represented by general Formula (1) or two or more polymer compounds having a structural unit derived from a compound. In the Formula (1) L1 represents a divalent bonding group, Ar1 through Ar4 represent an aromatic group, provided that at least one of Ar1 through Ar4 represents a polymerizable group as a substituent.
An organic electroluminescent element comprising plural organic compound layers including a light-emitting layer and a hole transport layer interposed between an anode and a cathode, a phosphorescent light-emitting compound contained in the light-emitting layer emitting light, wherein,
Dependencies are inferred from the claim text.