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US 8,299,459 B2Granted
Diindenopicene compound and organic light emitting device using the same
AssigneeCanon Kabushiki Kaisha
InventorsMaki Okajima, Naoki Yamada
Life of this patent
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Abstract
The present invention provides an organic light emitting device which shows a blue light emission hue of remarkably good color purity and has a high-efficiency and high-luminance optical output. An organic light emitting device including an anode 2, a cathode 4 and an organic compound layer sandwiched between the anode 2 and the cathode 4, wherein at least one diindenopicene compound represented by general formula [1] described below is contained in the organic compound layer:
Claims6
A diindenopicene compound represented by general formula [1] described below:
- wherein R1 to R4 are each a hydrogen atom, an alkyl group, an unsubstituted phenyl group or a phenyl group substituted by an alkyl group, provided that a combination of substituents represented by R1 to R4 is any of the following (1) to (4):
- (1) R1, R2, R3 and R4 are all hydrogen atoms;
- (2) R1 and R4 are each an alkyl group, an unsubstituted phenyl group or a phenyl group substituted by an alkyl group, and R2 and R3 are each a hydrogen atom, wherein R1 and R4 are identical or different;
- (3) R2 and R3 are each an alkyl group, an unsubstituted phenyl group or a phenyl group substituted by an alkyl group, and R1 and R4 are each a hydrogen atom, wherein R2 and R3 are identical or different;
- (4) R1 is an alkyl group, an unsubstituted phenyl group or a phenyl group substituted by an alkyl group, R2 and R4 are each a hydrogen atom, and R3 is a hydrogen atom, an unsubstituted phenyl group or a phenyl group substituted by an alkyl group, wherein when both R1 and R3 are an unsubstituted phenyl group or a phenyl group substituted by an alkyl group, R1 and R3 are identical or different.
2 more elements
Dependencies are inferred from the claim text.