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US 8,044,577 B2Granted
Full-color electroluminescent display device with multiple emission layers and method of fabricating the same
AssigneeSamsung Mobile Display Co., Ltd.
InventorsSeok-Hwan Hwang, Young-Kook Kim
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Abstract
A full-color organic light emitting display device and a method of fabricating the same, including a substrate, at least one color conversion layer, a color filter, and an organic light emitting diode having a lower electrode disposed on the substrate, an upper electrode disposed on the lower electrode, and an organic layer with at least a first emission layer.
Claims17
An organic light emitting display device, comprising:
- a substrate;
- an organic light emitting diode including a lower electrode, an upper electrode, and an organic layer interposed between the lower and upper electrodes, the organic layer having only a first emission layer and a second emission layer, the first emission layer being configured to emit only blue light and the second emission layer being configured to emit only green light, the first emission layer being directly on the second emission layer;
- at least one color conversion layer, the color conversion layer only including red color conversion layers and green color conversion layers spaced apart on the organic light emitting diode,
- wherein a blue pixel region is substantially free of the color conversion layer;
- and
- a color filter, the color filter being disposed only in the blue pixel region.
3 more elements
A method of fabricating an organic light emitting display device, comprising:
- obtaining a substrate;
- forming an organic light emitting diode having a lower electrode, an upper electrode, and an organic layer interposed between the lower and upper electrodes, the organic layer having only a first emission layer and a second emission layer, the first emission layer being configured to emit only blue light and a second emission layer configured to emit only green light, the first emission layer being directly on the second emission layer;
- affixing the organic light emitting diode to the substrate;
- depositing at least one color conversion layer on the upper electrode of the organic light emitting diode, the color conversion layer including red color conversion layers and green color conversion layers spaced apart on the organic light emitting diode,
- wherein a blue pixel region is substantially free of the color conversion layer;
- and
- depositing a color filter on the upper electrode of the organic light emitting diode in a region only corresponding to the blue pixel region of the substrate.
4 more elements
Dependencies are inferred from the claim text.