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US 8,274,212 B2Granted
Organic light emitting device including first hole injection layer and second hole injection layer
AssigneeSamsung Mobile Display Co., Ltd.
InventorsWon-Jun Song, Yeun-Joo Sung, Mu-Hyun Kim
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Abstract
An organic light emitting device includes a first electrode; a second electrode; an emissive layer disposed between the first electrode and the second electrode; a first hole injection layer disposed between the first electrode and the second electrode; and a second hole injection layer disposed between the first electrode and the second electrode. The first hole injection layer includes a metal fluoride and a first organic hole injection layer forming compound, and the second hole injection layer includes a metal oxide and a second organic hole injection layer forming compound.
Claims15
An organic light emitting device, comprising:
- a first electrode;
- a second electrode;
- an emissive layer disposed between the first electrode and the second electrode;
- a first hole injection layer disposed between the first electrode and the second electrode;
- and
- a second hole injection layer, wherein the first hole injection layer comprises a metal fluoride and a first organic hole injection layer forming compound, wherein the metal fluoride comprises a metal that is one of a Group 1 element and a Group 2 element, and the second hole injection layer comprises a metal oxide and a second organic hole injection layer forming compound, wherein the second hole injection layer is disposed between the first hole injection layer and the emissive layer, and wherein a thickness ratio of the first hole injection layer to the second hole injection layer is in a range of 1:99 to 1:9;
- and
- wherein the first hole injection layer is disposed between the second hole injection layer and an anode so that the second hole injection layer comprising the metal oxide is separate from the anode.
5 more elements
An organic light emitting device, comprising:
- a first electrode;
- a second electrode;
- an emissive layer disposed between the first electrode and the second electrode;
- a first hole injection layer disposed between the first electrode and the second electrode;
- and
- a second hole injection layer, wherein the first hole injection layer comprises a metal fluoride and a first organic hole injection layer forming compound, wherein the metal fluoride comprises a metal that is one of a Group 1 element and a Group 2 element, and the second hole injection layer comprises a metal oxide and a second organic hole injection layer forming compound, wherein the first electrode is an anode and the second electrode is a cathode, wherein the second hole injection layer is disposed between the first hole injection layer and the emissive layer, and wherein a thickness ratio of the first hole infection layer to the second hole injection layer is in a range of 1:99 to 1:9;
- and
- wherein the first hole injection layer is disposed between the second hole injection layer and an anode so that the second hole injection layer comprising the metal oxide is separate from the anode.
5 more elements
An organic light emitting device, comprising:
- a first electrode;
- a second electrode;
- an emissive layer disposed between the first electrode and the second electrode;
- a first hole injection layer disposed between the first electrode and the second electrode;
- and
- a second hole injection layer, wherein the first hole injection layer comprises a metal fluoride and a first organic hole injection layer forming compound, wherein the metal fluoride comprises a metal that is one of a Group 1 element and a Group 2 element, and the second hole injection layer comprises a metal oxide and a second organic hole injection layer forming compound, wherein the first electrode is an anode and the second electrode is a cathode, wherein the second hole injection layer is disposed between the first hole injection layer and the emissive layer;
- wherein a mixing molar ratio of the metal fluoride and the first organic hole injection layer forming compound is in a range of 1:1 to 3:1;
- and
- wherein the first hole injection layer is disposed between the second hole injection layer and the anode so that the second hole injection layer comprising the metal oxide is separate from the anode.
6 more elements
An organic light emitting device, comprising:
- a first electrode;
- a second electrode;
- an emissive layer disposed between the first electrode and the second electrode;
- a first hole injection layer disposed between the first electrode and the second electrode;
- and
- a second hole injection layer, wherein the first hole injection layer comprises a metal fluoride and a first organic hole injection layer forming compound, wherein the metal fluoride comprises a metal that is one of a Group 1 element and a Group 2 element, and the second hole injection layer comprises a metal oxide and a second organic hole injection layer forming compound, wherein the first electrode is an anode and the second electrode is a cathode, wherein the second hole injection layer is disposed between the first hole injection layer and the emissive layer;
- wherein a mixing molar ratio of the metal oxide and the second organic hole injection layer forming compound is in a range of 1:1 to 3:1;
- and
- wherein the first hole injection layer is disposed between the second hole injection layer and the anode so that the second hole injection layer comprising the metal oxide is separate from the anode.
6 more elements
Dependencies are inferred from the claim text.