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US 8,642,999 B2Granted
Organic light-emitting device and display apparatus
AssigneeCanon Kabushiki Kaisha
InventorsShunsuke Shioya, Satoru Shiobara
Life of this patent
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Abstract
Provided is an organic light-emitting device having a high emission efficiency and a long lifetime. The organic light-emitting device (10) includes an anode (2), a cathode (6), and a stack body including at least a light-emitting layer (4) and interposed between the anode (2) and the cathode (6), in which the light-emitting layer (4) includes an oligomer material and a polymer material.
Claims12
An organic light-emitting device comprising:
- an anode;
- a cathode;
- and
- a light-emitting layer interposed between the anode and the cathode,
- wherein the light-emitting layer comprises an oligomer material comprising a plurality of fluorene units and having a single molecular weight ranging from 1,000 to 10,000, a polymer material having a molecular weight distribution, and a triplet light-emitting material, the concentration of the oligomer material being higher than the concentration of the polymer material.
2 more elements
Dependencies are inferred from the claim text.