Light emitting device
First Claim
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1. A light emitting device comprising:
- a container cut off from the atmosphere;
an organic electroluminescence element in the container; and
a drying agent in the container, wherein the drying agent chemically absorbs moisture, and maintains a solid state after the moisture absorption, and wherein the drying agent comprises a porous body having a porosity of 20% or more.
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Accused Products
Abstract
A drying agent enclosed in an organic EL element is sealed with a shape with which particulate contamination becomes less than that of a conventional shape, while still capable of showing a moisture absorption capacity similar to that of a fine powder. A light emitting device, and an electronic device, having long life and having less particulate contamination than in a device manufactured by conventional processes, are provided by using the organic EL element. The drying agent, made from a compound capable of chemically absorbing moisture, is formed as a bulk porous body or a porous film, and is formed along with the organic EL elements within a container cut off from the atmosphere. In addition, the light emitting device and the electronic device are manufactured using the organic EL elements.
103 Citations
68 Claims
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1. A light emitting device comprising:
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a container cut off from the atmosphere;
an organic electroluminescence element in the container; and
a drying agent in the container, wherein the drying agent chemically absorbs moisture, and maintains a solid state after the moisture absorption, and wherein the drying agent comprises a porous body having a porosity of 20% or more. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 67, 68)
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12. A light emitting device comprising:
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a container cut off from the atmosphere;
an organic electroluminescence element in the container; and
a drying agent in the container, wherein the drying agent chemically absorbs moisture, and maintains a solid state after the moisture absorption, and wherein the drying agent comprises a porous film having a porosity of 20% or more.
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23. A light emitting device comprising:
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a container cut off from the atmosphere;
an organic electroluminescence element in the container; and
a drying agent in the container, wherein the drying agent comprises at least one selected from the group consisting of an alkaline metal oxide and an alkaline-earth metal oxide, and wherein the drying agent is formed as a porous film having a porosity of 20% or more.
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36. A light emitting device comprising:
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a container cut off from the atmosphere;
an organic electroluminescence element in the container; and
a drying agent in the container, wherein the drying agent comprises at least one selected from the group consisting of an alkaline metal oxide and an alkaline-earth metal oxide, and wherein the drying agent is formed as a porous film having a porosity of 20% or more by a sol-gel method.
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49. A light emitting device comprising:
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an organic electroluminescence element over a first substrate;
a second substrate opposed to the first substrate, wherein a drying agent comprising a porous body is provided in contact with the second substrate; and
a sealing member interposed between the first substrate and the second substrate, wherein the drying agent chemically absorbs moisture, and maintains a solid state after the moisture absorption.
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59. A light emitting device comprising:
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an organic electroluminescence element over a first substrate;
a second substrate opposed to the first substrate, wherein a drying agent comprising a porous film is provided in contact with the second substrate; and
a sealing member interposed between the first substrate and the second substrate, wherein the drying agent chemically absorbs moisture, and maintains a solid state after the moisture absorption.
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Specification
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Current AssigneeSemiconductor Energy Laboratory Co., Ltd.
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Original AssigneeSemiconductor Energy Laboratory Co., Ltd.
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InventorsSeo, Satoshi
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current362/84
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CPC Class CodesH05B 33/14 characterised by the chemic...H10K 50/846 comprising getter material ...H10K 59/874 including getter material o...Y10T 428/231 Filled with gas other than ...
