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US 2022/0013737 A1Published application
Organic light-emitting device
AssigneeSamsung Display Co., Ltd.
InventorsSun Woo KANG, Sang Ho JEON, Young Mi CHO
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Abstract
Provided is an organic light-emitting device including: an anode; a cathode facing the anode; and an organic layer arranged between the anode and the cathode and including an emission layer and an auxiliary layer, wherein the emission layer is in direct contact with the auxiliary layer, the emission layer includes a dopant, the auxiliary layer includes a first compound and a second compound, and the dopant, the first compound, and the second compound satisfy a certain equation.
Claims20
An organic light-emitting device comprising:
- an anode;
- a cathode facing the anode;
- and
- an organic layer arranged between the anode and the cathode and comprising an emission layer and an auxiliary layer,
- wherein the emission layer is in direct contact with the auxiliary layer,
- the emission layer comprises a dopant,
- the auxiliary layer comprises a first compound and a second compound, and
- the dopant, the first compound, and the second compound satisfy Equations 1 to 3:
- T1(D)>T1(C1) Equation 1
- S1(D)<S1(C1) Equation 2
- S1(C1)<S1(C2) Equation 3
- wherein, in Equations 1 to 3,
- T1(D) is a lowest excited triplet energy level of the dopant,
- T1(C1) is a lowest excited triplet energy level of the first compound,
- S1(D) is a lowest excited singlet energy level of the dopant,
- S1(C1) is a lowest excited singlet energy level of the first compound, and
- S1(C2) is a lowest excited singlet energy level of the second compound.
14 more elements
An organic light-emitting device comprising:
- a substrate partitioned into a first subpixel area, a second subpixel area, and a third subpixel area;
- a plurality of anodes arranged on each of the first subpixel area, the second subpixel area, and the third subpixel area of the substrate;
- a cathode facing the plurality of anodes;
- and
- an organic layer arranged between the plurality of anodes and the cathode and comprising a first emission layer, a second emission layer, and a third emission layer that are respectively arranged on the first subpixel area, the second subpixel area, and the third subpixel area of the substrate,
- wherein the organic layer comprises an auxiliary layer arranged on the first subpixel area,
- the third emission layer comprises a dopant,
- the auxiliary layer comprises a first compound and a second compound, and
- the dopant, the first compound, and the second compound satisfy Equations 1 to 3:
- T1(D)>T1(C1) Equation 1
- S1(D)<S1(C1) Equation 2
- S1(C1)<S1(C2) Equation 3
- S1(C1)<S1(C2)
- wherein, in Equations 1 to 3,
- T1(D) is a lowest excited triplet energy level of the dopant,
- T1(C1) is a lowest triplet energy level of the first compound,
- S1(D) is a lowest excited singlet energy level of the dopant,
- S1(C1) is a lowest excited singlet energy level of the first compound, and
- S1(C2) is a lowest excited singlet energy level of the second compound.
16 more elements
Dependencies are inferred from the claim text.