Organic light emitting diode
AssigneeSamsung Display Co., Ltd.
InventorSungjin Choi
Life of this patent
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Abstract
Provided is an organic light emitting diode including a first electrode layer, a second electrode layer opposing the first electrode layer, a first light emitting layer between the first and second electrode layers to generate a first light having a first wavelength, a second light emitting layer between the first light emitting layer and the second electrode layer to generate a second light having a second wavelength which is longer than the first wavelength, and a charge generating layer between the first and second light emitting layers. The first and second lights are emitted through the second electrode layer. An optical length between the first and second electrode layers is substantially the same as a fourth resonant distance of the first light.
Claims18
An organic light emitting diode, comprising:
- a first electrode layer;
- a second electrode layer opposing the first electrode layer, the second electrode layer apart from the first electrode layer by an optical length;
- a first light emitting layer between the first and second electrode layers, the first light emitting layer to generate a first light having a first wavelength;
- a second light emitting layer between the first light emitting layer and the second electrode layer, the second light emitting layer to generate a second light having a second wavelength, longer than the first wavelength;
- and
- a charge generating layer between the first and second light emitting layers, wherein
- the first and second lights are emitted to the outside through the second electrode layer,
- the optical length is defined as a minimal distance from an interface between the first electrode layer and a layer in contact with the first electrode layer to an interface between the second electrode layer and a layer in contact with the second electrode layer, and
- the optical length between the first and second electrode layers is a fourth resonant distance of the first light.
An organic light emitting diode, comprising:
- a first electrode layer;
- a second electrode layer opposing the first electrode layer;
- a first light emitting layer between the first and second electrode layers, the first light emitting layer to generate a first light having a first wavelength range;
- a second light emitting layer between the first light emitting layer and the second electrode layer, the second light emitting layer to generate a second light having a second wavelength range, longer than the first wavelength range;
- a third light emitting layer between the first and second light emitting layers;
- a first electric charge generating layer between the first and third light emitting layers;
- and
- a second charge generating layer between the second and third light emitting layer, wherein
- the first to third lights are emitted to the outside through the second electrode layer, and
- an optical length between the first and second electrode layers is a fourth resonant distance of the first light.
Dependencies are inferred from the claim text.