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US 2023/0157046 A1Published application
Organic light-emitting device and electronic apparatus including the same
AssigneeSamsung Display Co., Ltd.
InventorHeejoo KO
Life of this patent
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Abstract
An organic light-emitting device and an electronic apparatus incorporating the same. The organic light-emitting device includes an anode, a cathode, and an organic layer between the anode and the cathode and comprising an emission region. The emission region includes a first emission layer, a second emission layer, and a first exciton quenching layer. The first emission layer comprises a first host and a first dopant, the second emission layer comprises a second host and a second dopant, and the first exciton quenching layer is disposed between the first emission layer and the second emission layer and comprises a first quenching material.
Claims17
An organic light-emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer between the anode and the cathode and comprising an emission region,
- wherein:
- the emission region comprises a first emission layer, a second emission layer, and a first layer;
- the first emission layer comprises a first host and a first dopant;
- the second emission layer comprises a second host and a second dopant;
- the first layer is disposed between the first emission layer and the second emission layer and comprises a first material;
- and
- the first host, the first dopant, the second host, the second dopant, and the first material satisfy Equations 1-1 to 1-4:
- T1(Q1)≤T1(H1) <Equation 1-1>
- T1(Q1)≤T1(D1) <Equation 1-2>
- T1(Q1)≤T1(H2) <Equation 1-3>
- T1(Q1)≤T1(D2) <Equation 1-4>,
- wherein, in Equations 1-1 to 1-4,
- T1(Q1) is a lowest excitation triplet energy level of the first material,
- T1(H1) is a lowest excitation triplet energy level of the first host,
- T1(D1) is a lowest excitation triplet energy level of the first dopant,
- T1(H2) is a lowest excitation triplet energy level of the second host, and
- T1(D2) is a lowest excitation triplet energy level of the second dopant.
18 more elements
An organic light-emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer between the anode and the cathode and comprising an emission region,
- wherein:
- the emission region comprises a first emission layer, a second emission layer, and a first layer;
- the first emission layer comprises a first host and a first dopant;
- the second emission layer comprises a second host and a second dopant;
- the first layer is disposed between the first emission layer and the second emission layer and comprises a first material;
- and
- the lowest excitation triplet energy level T1(Q1) of the first material is in a range of about 1 eV to about 3.5 eV.
8 more elements
An organic light-emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer between the anode and the cathode and comprising an emission region,
- wherein:
- the emission region comprises a first emission layer, a second emission layer, and a first layer;
- the first emission layer comprises a first host and a first dopant;
- the second emission layer comprises a second host and a second dopant;
- the first layer is disposed between the first emission layer and the second emission layer and comprises a first material;
- the first host comprises a first hole transport host comprising no electron transport moiety and a first electron transport host comprising at least one electron transport moiety;
- and
- the second host comprises a second hole transport host comprising no electron transport moiety and a second electron transport host comprising at least one electron transport moiety.
9 more elements
An organic light-emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer between the anode and the cathode and comprising an emission region,
- wherein:
- the emission region comprises a first emission layer, a second emission layer, and a first layer;
- the first emission layer comprises a first host and a first dopant;
- the second emission layer comprises a second host and a second dopant;
- the first layer is disposed between the first emission layer and the second emission layer and comprises a first material;
- the first dopant and the second dopant are each independently a phosphorescent dopant or a delayed fluorescence dopant;
- and
- the delayed fluorescence dopant satisfies Equation 3 and comprises no metal atom:
- |S1(DF)−T1(DF)≡≤0.5 eV <Equation 3>,
- wherein, in Equation 3,
- T1(DF) is a lowest excitation triplet energy level of the delayed fluorescence dopant, and
- S1(DF) is a lowest excitation singlet energy level of the delayed fluorescence dopant.
13 more elements
An organic light-emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer between the anode and the cathode and comprising an emission region,
- wherein:
- the emission region comprises a first emission layer, a second emission layer, and a first layer;
- the first emission layer comprises a first host and a first dopant;
- the second emission layer comprises a second host and a second dopant;
- the first layer is disposed between the first emission layer and the second emission layer and comprises a first material;
- a thickness (DQ1) of the first layer and a thickness of (DE1) of the first emission layer satisfy DE1≥DQ1;
- and
- a thickness (DQ1) of the first layer and a thickness (DE2) of the second emission layer satisfy DE2≥DQ1.
9 more elements
Dependencies are inferred from the claim text.