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US 2003/0164496 A1Published application
Organic electroluminescent display device and method of manufacturing the same
AssigneeSamsung SDI Co., Ltd.
InventorsYoung-rag Do, Yoon-chang Kim, Jin-woo Park, Young-woo Song
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Abstract
An organic electroluminescent (EL) display device and a method of manufacturing the same. The organic EL device includes a substrate layer, a first electrode layer formed on the substrate layer, an organic layer formed on the first electrode layer, and a second electrode layer formed on the organic layer, wherein a light loss preventing layer having different refractive index areas is formed between layers of the organic EL device having a large difference in refractive index among the respective layers.
Claims50
An organic electroluminescent (EL) display device comprising:
- a substrate layer;
- a first electrode layer formed on the substrate layer;
- an organic layer formed on the first electrode layer;
- a second electrode layer formed on the organic layer;
- and
- a light loss preventing layer having areas with different refractive indices, formed between ones of the substrate, first electrode, organic, and second electrode layers having a large difference in refractive indices.
3 more elements
An organic EL device comprising:
- a transparent substrate;
- a first electrode layer formed on the transparent substrate in a first predetermined pattern in a first direction, and made of a transparent conductive material;
- an organic layer formed on the first electrode layer in a second predetermined pattern;
- a second electrode layer formed on the organic layer in a second direction at a predetermined angle with respect to the first direction;
- a light loss preventing layer provided between the substrate and the first electrode layer, wherein the light loss preventing layer has areas having different refractive indices, and is formed in a preset pattern;
- and
- an encapsulation layer which encapsulates the first electrode layer, the organic layer and the second electrode layer.
4 more elements
An organic EL device comprising:
- a transparent substrate;
- a pixel area having a transparent first electrode layer formed on the transparent substrate in a first predetermined pattern, an organic layer formed on the first electrode layer in a second predetermined pattern, an insulating layer formed over the transparent substrate which exposes a portion of the organic layer, and a second electrode layer formed on the organic layer and the insulating layer in a third predetermined pattern;
- a drive area having thin film transistors (TFrs) formed on the transparent substrate, wherein the drive area selectively applies a predetermined voltage to the first electrode layer;
- and
- a light loss preventing layer having areas having different refractive indices formed between the transparent substrate and the first electrode layer in a preset pattern.
2 more elements
An organic EL device having a thin film transistor (TFT), comprising:
- a transparent substrate;
- a buffer layer formed on the transparent substrate;
- a thin film transistor (TFT) layer formed on the buffer layer;
- an insulating layer which covers the TFT layer;
- a first electrode layer formed on the insulating layer in a first predetermined pattern and to which voltages are selectively applied by the TFT;
- an insulating planarization layer having an opening which exposes a portion of the first electrode layer;
- an organic layer formed on the first electrode layer;
- a second electrode layer formed on the organic layer and the planarization layer in a second predetermined pattern;
- and
- a light loss preventing layer having areas having different refractive indices formed between the first electrode layer and the insulating layer, or on the second electrode layer in a preset pattern.
7 more elements
A method of manufacturing an organic EL device, the method comprising:
- obtaining layers including a substrate layer, a first electrode layer formed on the substrate layer, an organic layer formed on the first electrode layer, and a second electrode layer formed on the organic layer;
- and
- providing a light loss preventing layer having areas with different refractive indices between ones of the substrate, first electrode, organic, and second electrode layers having a large difference in refractive indices, wherein the providing of the light loss preventing layer comprises:
- forming a first layer having a first component,
- masking the first layer using a mask having a predetermined pattern,
- injecting ions having a second component into the masked first layer, and
- heat treating the ion-injected layer under an oxidative atmosphere to provide the light loss preventing layer having an ion injected area and a non-ion injected area having different corresponding refractive indices.
4 more elements
A method of manufacturing an organic EL device, the method comprising:
- obtaining layers including a substrate layer, a first electrode layer formed on the substrate layer, an organic layer formed on the first electrode layer, and a second electrode layer formed on the organic layer;
- and
- providing a light loss preventing layer having areas having different refractive indices, wherein the providing of the light loss preventing layer comprises:
- forming a first layer by coating a composition including a photosensitive material and a binder resin,
- exposing the coated first layer in a predetermined pattern, and
- sequentially developing, bleaching and washing the exposed first layer.
3 more elements
An organic EL display device comprising:
- layers which include a substrate layer, a first electrode layer, an organic layer which emits light, and a second electrode layer;
- and
- a light loss preventing layer which selectively scatters and reflects the light, formed between ones of the layers, which include the substrate, first electrode, organic, and second electrode layers, having a large difference in refractive indices so as to prevent reflection at an interface of the layers.
Dependencies are inferred from the claim text.