Organic light-emitting device

Patent metadata

Field	Value
Publication number	US-11696499-B2
Application number	US-202016866460-A
Country	US
Kind code	B2
Filing date	May 4, 2020
Priority date	May 10, 2016
Publication date	Jul 4, 2023
Grant date	Jul 4, 2023

Abstract

An organic light emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a first compound, a second compound, a third compound, and a fourth compound, and the first compound to the fourth compound satisfy Equations 1 to 8:E1,LUMO≥E2,LUMO+0.15 electron volts (eV)  Equation 1E1,HOMO≥E2,HOMO+0.15 eV  Equation 2E1,T1≥E4,T1  Equation 3E2,T1≥E4,T1  Equation 4E3,T1≥E4,T1  Equation 5E3,LUMO≥E2,LUMO+0.1 eV  Equation 6−5.6 eV≥E3,HOMO  Equation 7Egap1≥Egap3.  Equation 8

First claim

What is claimed is:

1. An organic light-emitting device comprising:
a first electrode;
a second electrode facing the first electrode; and
an organic layer between the first electrode and the second electrode, the organic layer comprising an emission layer,
wherein the organic layer comprises a first compound, a second compound, a third compound, and a fourth compound, and
the first compound to the fourth compound satisfy Equations 1 to 8:
E 1,LUMO ≥E 2,LUMO +0.15 electron volts (eV)  Equation 1

E 1,HOMO ≥E 2,HOMO +0.15 eV  Equation 2

E 1,T1 ≥E 4,T1   Equation 3

E 2,T1 ≥E 4,T1   Equation 4

E 3,T1 ≥E 4,T1   Equation 5

E 3,LUMO ≥E 2,LUMO +0.1 eV  Equation 6

−5.6 eV≥ E 3,HOMO   Equation 7

E gap1 ≥E gap3 ,  Equation 8

wherein, in Equations 1 to 8,
E 1,LUMO indicates a lowest unoccupied molecular orbital (LUMO) energy level of the first compound,
E 2,LUMO indicates a LUMO energy level of the second compound,
E 3,LUMO indicates a LUMO energy level of the third compound,
E 1,HOMO indicates a highest occupied molecular orbital (HOMO) energy level of the first compound,
E 2,HOMO indicates a HOMO energy level of the second compound,
E 3,HOMO indicates a HOMO energy level of the third compound,
E 1,T1 indicates a lowest excited triplet energy level of the first compound,
E 2,T1 indicates a lowest excited triplet energy level of the second compound,
E 3,T1 indicates a lowest excited triplet energy level of the third compound,
E 4,T1 indicates a lowest excited triplet energy level of the fourth compound,
E gap1 indicates a gap between the LUMO energy level of the first compound and the HOMO energy level of the first compound, and
E gap3 indicates a gap between the LUMO energy level of the third compound and the HOMO energy level of the third compound,
wherein
the third compound is represented by Formula 4:

wherein, in Formulae 4 and 5,
A 51 is selected from a benzene group, a naphthalene group, a fluorene group, a phenanthrene group, an anthracene group, a triphenylene group, a pyrene group, a chrysene group, a furan group, a thiophene group, a pyrrole group, a pyridine group, a pyrazine group, a pyrimidine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a 2,6-naphthyridine group, a 1,8-naphthyridine group, a 1,5-naphthyridine group, a 1,6-naphthyridine group, a 1,7-naphthyridine group, a 2,7-naphthyridine group, a quinoxaline group, a quinazoline group, a benzofuran group, a benzothiophene group, a dibenzofuran group, a dibenzothiophene group, and a carbazole group
X 51 is selected from N and CR 51 ,
L 41 to L 43 are each independently selected from the group consisting of:
a phenylene group, a pentalenylene group, an indenylene group, a naphthylene group, an azulenylene group, a heptalenylene group, an indacenylene group, an acenaphthylene group, a fluorenylene group, a spiro-bifluorenylene group, a dibenzofluorenylene group, a phenalenylene group, a phenanthrenylene group, an anthracenylene group, a fluoranthenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylene group, a naphthacenylene group, a picenylene group, a perylenylene group, a pentaphenylene group, a hexacenylene group, a pentacenylene group, a rubicenylene group, a coronenylene group, an ovalenylene group, a pyrrolylene group, a thiophenylene group, a furanylene group, an imidazolylene group, a pyrazolylene group, a thiazolylene group, an isothiazolylene group, an oxazolylene group, an isoxazolylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an isoindolylene group, an indolylene group, an indazolylene group, a purinylene group, a quinolinylene group, an isoquinolinylene group, a benzoquinolinylene group, a phthalazinylene group, a naphthyridinylene group, a quinoxalinylene group, a quinazolinylene group, a cinnolinylene group, a phenanthridinylene group, an acridinylene group, a phenanthrolinylene group, a phenazinylene group, a benzimidazolylene group, a benzofuranylene group, a benzothiophenylene group, an isobenzothiazolylene group, a benzoxazolylene group, an isobenzoxazolylene group, a triazolylene group, a tetrazolylene group, an oxadiazolylene group, a triazinylene group, a dibenzofuranylene group, a dibenzothiophenylene group, a dibenzosilolylene group, a benzocarbazolylene group, and a dibenzocarbazolylene group; and
a phenylene group, a pentalenylene group, an indenylene group, a naphthylene group, an azulenylene group, a heptalenylene group, an indacenylene group, an acenaphthylene group, a fluorenylene group, a spiro-bifluorenylene group, a dibenzofluorenylene group, a phenalenylene group, a phenanthrenylene group, an anthracenylene group, a fluoranthenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylene group, a naphthacenylene group, a picenylene group, a perylenylene group, a pentaphenylene group, a hexacenylene group, a pentacenylene group, a rubicenylene group, a coronenylene group, an ovalenylene group, a pyrrolylene group, a thiophenylene group, a furanylene group, an imidazolylene group, a pyrazolylene group, a thiazolylene group, an isothiazolylene group, an oxazolylene group, an isoxazolylene group, a pyridinylene group, a pyrazinylene group, a pyrimidinylene group, a pyridazinylene group, an isoindolylene group, an indolylene group, an indazolylene group, a purinylene group, a quinolinylene group, an isoquinolinylene group, a benzoquinolinylene group, a phthalazinylene group, a naphthyridinylene group, a quinoxalinylene group, a quinazolinylene group, a cinnolinylene group, a phenanthridinylene group, an acridinylene group, a phenanthrolinylene group, a phenazinylene group, a benzimidazolylene group, a benzofuranylene group, a benzothiophenylene group, an isobenzothiazolylene group, a benzoxazolylene group, an isobenzoxazolylene group, a triazolylene group, a tetrazolylene group, an oxadiazolylene group, a triazinylene group, a dibenzofuranylene group, a dibenzothiophenylene group, dibenzosilolylene group, a benzocarbazolylene group, and a dibenzocarbazolylene group, each substituted with at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C 1 -C 20 alkyl group, a C 1 -C 20 alkoxy group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenyl group, a terphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, a heptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group, a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothio

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Hwan-Hee
• Kim Myeong-Suk
• Kim Sung-Wook
• Kim Se-Hun
• Hwang Jin-Soo

Classifications

• C09K2211/1011

  Condensed systems · CPC title

• H10K50/15

  Hole transporting layers · CPC title

• H10K85/6574

  comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes · CPC title

• H10K85/633

  comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom · CPC title

• H10K85/346

  comprising platinum · CPC title