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EP0776147A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Organic EL element

Assignee: Tohoku Pioneer Corp
•
Filing: 1996-11-20
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Granted: —
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Expires: 2016-11-20
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Abstract

Abstract An organic EL element (1) is provided with: a lamination body (6, 6') having a pair of electrodes (3, 5) opposed to each other and an organic luminescent material layer (4), which comprises an organic compound and is interposed between the pair of electrodes, for emitting a light from the organic luminescent material layer by supplying electrons and holes to the organic luminescent material layer from the pair of electrodes; an airtight container (10) for airtightly containing the lamination body to isolate the lamination body from an external atmosphere thereof; and a drying substance (8) airtightly contained in the airtight container and spaced from the lamination body in an internal space (11) of the airtight container, for absorbing moisture in the internal space. The drying substance (8) comprises a solid compound which chemically absorbs the moisture and maintains its solid state even after absorbing the moisture.

Inventors

  • 👤 Shin c/o Pioneer Electronic Corp. Kawami
  • 👤 Hitoshi c/o Pioneer Electronic Corp. Nakada
  • 👤 Takemi c/o Tohoku Pioneer Electronic Corp. Naito

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-28 15:50
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/02; H05B33/04; H05B33/12; H10; H10K; H10K50/00; H10K50/80; H10K50/84; H10K50/846; Y; Y10; Y10S; Y10S428/00; Y10S428/917; Y10T; Y10T428/00; Y10T428/23; Y10T428/231; Y10T428/239

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 155 words
An organic EL element (1) comprising a lamination body (6, 6') comprising a pair of electrodes (3, 5) opposed to each other and an organic luminescent material layer (4), which comprises an organic compound and is interposed between said pair of electrodes, for emitting a light from said organic luminescent material layer by supplying electrons and holes to said organic luminescent material layer from said pair of electrodes, characterized in that said organic EL element (1) further comprises: an airtight container (10) for airtightly containing said lamination body (6, 6') to isolate said lamination body from an external atmosphere thereof; and a drying substance (8) airtightly contained in said airtight container and spaced from said lamination body in an internal space (11) of said airtight container, for absorbing moisture in the internal space, said drying substance comprising a solid compound which chemically absorbs the moisture and maintains its solid state even after absorbing the moisture.
Claim 2
Dependent Claim 44 words
An organic EL element according to claim 1, characterized in that said lamination body (6') further comprises an electron supplying layer (22) and a holes supplying layer (21) laminated on said pair of electrodes (3, 5) for respectively supplying the electrons and the holes.
Claim 3
Dependent Claim 64 words
An organic EL element according to claim 1 or 2, characterized in that said airtight container (10) comprising: a sealing case (7), in which said drying substance (8) is disposed; a transparent substrate (2), on which said lamination body (6, 6') is disposed and which covers said sealing case; and a sealing agent (9) for airtightly bonding said transparent substrate to said sealing case.
Claim 4
Dependent Claim 30 words
An organic EL element according to any one of claims 1 to 3, characterized in that the internal space (11) of said airtight container (10) is filled with inert gas.
Claim 5
Dependent Claim 30 words
An organic EL element according to any one of claims 1 to 4, characterized in that the solid compound of said drying substance (8) comprises an alkaline metal oxide compound.
Claim 6
Dependent Claim 31 words
An organic EL element according to any one of claims 1 to 4, characterized in that the solid compound of said drying substance (8) comprises an alkaline earth metal oxide compound.
Claim 7
Dependent Claim 26 words
An organic EL element according to any one of claims 1 to 4, characterized in that the solid compound of said drying substance (8) comprises sulfate.
Claim 8
Dependent Claim 27 words
An organic EL element according to any one of claims 1 to 4, characterized in that the solid compound of said drying substance (8) comprises metal halide.
Claim 9
Dependent Claim 26 words
An organic EL element according to any one of claims 1 to 4, characterized in that the solid compound of said drying substance (8) comprises perchlorate.
Claim 10
Dependent Claim 28 words
An organic EL element according to any one of claims 1 to 4, characterized in that the solid compound of said drying substance (8) comprises an organic substance.

References Cited (Backward Citations)

EP0350907A2 Cited
US5189405A Cited
EP0500382A2 Cited

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