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US 7,728,326 B2Granted
Light emitting device and electronic apparatus
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Toru Takayama
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Abstract
A light emitting device which is capable of suppressing deterioration by diffusion of impurities such as moisture, oxygen, alkaline metal and alkaline earth metal, and concretely, a flexible light emitting device which has light emitting element formed on a plastic substrate. On the plastic substrate, disposed are two layers and more of barrier films comprising a layer represented by AlNxOy which is capable of blocking intrusion of moisture and oxygen in a light emitting layer and blocking intrusion of impurities such as an alkaline metal and an alkaline earth metal in an active layer of TFT, and further, a stress relaxation film containing resin is disposed between two layers of barrier films.
Claims49
A light emitting device comprising:
- a substrate;
- a first insulating film over the substrate;
- a light emitting element over the first insulating film, the light emitting element having a cathode, an organic compound layer in contact with the cathode, and an anode in contact with the organic compound layer;
- a layer comprising Al, N and O over the light emitting element;
- a conductive film adhering a flexible print circuit in a terminal portion over the first insulating film;
- and
- a second insulating film over the layer comprising Al, N and O and the conductive film,
- wherein the light emitting element is covered by the layer comprising Al, N and O.
5 more elements
A light emitting device comprising:
- a substrate;
- a first layer comprising Al, N and O on the substrate;
- a first insulating film over the first layer comprising Al, N and O;
- a light emitting element over the first insulating film, the light emitting element having a cathode, an organic compound layer in contact with the cathode, and an anode in contact with the organic compound layer;
- a second layer comprising Al, N and O over the light emitting element;
- a conductive film adhering a flexible print circuit in a terminal portion over the first insulating film;
- and
- a second insulating film over the second layer comprising Al, N and O and the conductive film,
- wherein the light emitting element is covered by the second layer comprising Al, N and O.
6 more elements
A light emitting device comprising:
- a substrate;
- a first layer comprising Al, N and O on the substrate;
- a layer comprising organic resin on the first layer comprising Al, N and O;
- a second layer comprising Al, N and O on the layer comprising organic resin;
- a first insulating film over the second layer comprising Al, N and O;
- a light emitting element over the first insulating film, the light emitting element having a cathode, an organic compound layer in contact with the cathode, and an anode in contact with the organic compound layer;
- a third layer comprising Al, N and O over the light emitting element;
- a conductive film adhering a flexible print circuit in a terminal portion over the first insulating film;
- and
- a second insulating film over the third layer comprising Al, N and O and the conductive film,
- wherein the light emitting element is covered by the third layer comprising Al, N and O.
8 more elements
A light emitting device comprising:
- a plastic substrate;
- a first insulating film over the plastic substrate;
- a light emitting element over the first insulating film, the light emitting element having a cathode, an organic compound layer in contact with the cathode, and an anode in contact with the organic compound layer;
- a layer comprising Al, N and O over the light emitting element;
- a conductive film adhering a flexible print circuit in a terminal portion over the first insulating film;
- and
- a second insulating film over the layer comprising Al, N and O and the conductive film,
- wherein the light emitting element is covered by the layer comprising Al, N and O.
5 more elements
A light emitting device comprising:
- a plastic substrate;
- a first layer comprising Al, N and O on the plastic substrate;
- a first insulating film over the first layer comprising Al, N and O;
- a light emitting element over the first insulating film, the light emitting element having a cathode, an organic compound layer in contact with the cathode, and an anode in contact with the organic compound layer;
- a second layer comprising Al, N and O over the light emitting element;
- a conductive film adhering a flexible print circuit in a terminal portion over the first insulating film;
- and
- a second insulating film over the second layer comprising Al, N and O and the conductive film,
- wherein the light emitting element is covered by the second layer comprising Al, N and O.
6 more elements
A light emitting device comprising:
- a plastic substrate;
- a first layer comprising Al, N and O on the plastic substrate;
- a layer comprising organic resin on the first layer comprising Al, N and O;
- a second layer comprising Al, N and O on the layer comprising organic resin;
- a first insulating film over the second layer comprising Al, N and O;
- a light emitting element over the first insulating film, the light emitting element having a cathode, an organic compound layer in contact with the cathode, and an anode in contact with the organic compound layer;
- a third layer comprising Al, N and O over the light emitting element;
- a conductive film adhering a flexible print circuit in a terminal portion over the first insulating film;
- and
- a second insulating film over the third layer comprising Al, N and O and the conductive film,
- wherein the light emitting element is covered by the third layer comprising Al, N and O.
8 more elements
Dependencies are inferred from the claim text.