US 2024/0407187 A1Published application

Organic light-emitting device, display device

AssigneeBoe Technology Group Co., Ltd.

InventorsHaiyan SUN, Xiaojin ZHANG, Dan WANG, Siqi WANG

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Abstract

The disclosure provides an organic light-emitting device and a display device, which belong to the field of display technology. The organic light-emitting device includes a light-emitting layer (600), including a first host material, a second host material, at least one auxiliary material, and at least one dopant material; the first host material and the second host material form a first composite transport material; the auxiliary material and the second host material form the second composite transport material; S1(A)>S1(CH)>S1(C); T1(A)>T1(CH)>T1(C); S1(A) is the lowest singlet state energy of the host material, S1(CH) is the lowest singlet state energy of the composite transport material, S1(C) is the lowest singlet state energy of the dopant material; T1(A) is the lowest triplet state energy of the host material, T1(CH) is the lowest triplet state energy of the composite transport material, and T1(C) is the lowest triplet state energy of the dopant material.

Claims20

Dependent claims

An organic light-emitting device, comprising a light-emitting layer, the light-emitting layer comprising a first host material, a second host material, at least one auxiliary material, and at least one dopant material;

wherein the first host material and the second host material form a first composite transport material;
and the secondary material and the second host material form a second composite transport material;
wherein the first host material, the second host material, the first composite transport material, the second composite transport material, and the dopant material satisfy,
S1(A)>S1(CH)>S1(C);
T1(A)>T1(CH)>T1(C);
wherein S1(A) is a lowest singlet state energy of the first host material or the second host material, and S1(CH) is a lowest singlet state energy of the first composite transport material or the second composite transport material, and S1(C) is a lowest singlet state energy of the dopant material;
and
wherein T1(A) is a lowest triplet state energy of the first host material or the second host material, T1(CH) is a lowest triplet state energy of the first composite transport material or the second composite transport material, and T1(C) is a lowest triplet state energy of the dopant material.

5 more elements

A display device comprising an organic light-emitting device, wherein the organic light-emitting device comprises:

a light-emitting layer, the light-emitting layer comprising a first host material, a second host material, at least one auxiliary material, and at least one dopant material;
wherein the first host material and the second host material form a first composite transport material;
and the secondary material and the second host material form a second composite transport material;
wherein the first host material, the second host material, the first composite transport material, the second composite transport material, and the dopant material satisfy
S1(A)>S1(CH)>S1(C);
T1(A)>T1(CH)>T1(C);
wherein S1(A) is a lowest singlet state energy of the first host material or the second host material, and S1(CH) is a lowest singlet state energy of the first composite transport material or the second composite transport material, and S1(C) is a lowest singlet state energy of the dopant material;
and
wherein T1(A) is a lowest triplet state energy of the first host material or the second host material, T1(CH) is a lowest triplet state energy of the first composite transport material or the second composite transport material, and T1(C) is a lowest triplet state energy of the dopant material.

6 more elements

Dependencies are inferred from the claim text.