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Organic electroluminescent device

專利號(hào)
US11177444B2
公開(kāi)日期
2021-11-16
申請(qǐng)人
LG CHEM, LTD.（KR Seoul）
發(fā)明人
Dongheon Kim; Kongkyeom Kim; Hyungjin Lee; Nansra Heo; Woochul Lee
IPC分類
C07C15/28; C07D471/10; C07D251/24; H01L51/00; H01L51/50; C07D307/91; C09K11/06
技術(shù)領(lǐng)域
group,or,aryl,heteroaryl,atoms,carbon,alkyl,layer,host,material
地域： Seoul

摘要

The present specification relates to an organic electroluminescent device comprising: a first electrode; a second electrode; and an organic material layer provided between the first electrode and the second electrode, wherein the organic material layer comprises a light emitting layer and an electron transfer layer, the light emitting layer comprises a first host material, a second host material and a dopant material, the first host material has a HOMO energy level of ?5.9 eV or lower, and the second host material has a HOMO energy level higher than a HOMO energy level of the first host material by 0.1 eV to 0.2 eV.

說(shuō)明書(shū)

According to one embodiment of the present specification, L3s are the same as or different from each other, and each independently a direct bond; a phenylene group; a naphthylene group; a biphenylylene group; a terphenylylene group; a fluorenylene group unsubstituted or substituted with an alkyl group having 1 to 50 carbon atoms or an aryl group having 6 to carbon atoms; a phenanthrylene group; an anthracenylene group; a divalent thiophene group; a furanylene group; a pyrrolene group unsubstituted or substituted with an alkyl group having 1 to 50 carbon atoms or an aryl group having 6 to carbon atoms; a dibenzofuranylene group; a divalent dibenzothiophene group; or a carbazolylene group unsubstituted or substituted with an alkyl group having 1 to 50 carbon atoms or an aryl group having 6 to 50 carbon atoms.

According to one embodiment of the present specification, L3 is a substituted or unsubstituted arylene group.

According to one embodiment of the present specification, L3 is a substituted or unsubstituted arylene group having 6 to 50 carbon atoms.

According to one embodiment of the present specification, L3 is an arylene group.

According to one embodiment of the present specification, L3 is an arylene group having 6 to 50 carbon atoms.

According to one embodiment of the present specification, L3 is a substituted or unsubstituted phenylene group.

According to one embodiment of the present specification, L3 is a phenylene group.

According to one embodiment of the present specification, X1 is C.

According to one embodiment of the present specification, X1 is Si.

權(quán)利要求

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