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Organic electroluminescent light emitting device

一种发光装置、致发光的技术，应用在电致发光光源、电光源、照明装置等方向，能够解决吸湿剂不能够充分地发挥能力、不能够充分地提高有机EL发光装置可靠性等问题，达到可靠性高的效果

Active Publication Date: 2018-09-28
MERCK PATENT GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since a gap is provided between the moisture absorbent layer and the substrate, the intruding moisture is not affected by the moisture absorbent layer and easily reaches the organic EL element.
[0015] As mentioned above, in the conventionally proposed structure, the hygroscopic agent arranged in the sealing member cannot fully exert its capacity, and the degradation of the organic EL element due to the influence of moisture cannot be sufficiently suppressed.
Therefore, the reliability of the organic EL light-emitting device cannot be sufficiently improved.

Method used

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  • Organic electroluminescent light emitting device

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Experimental program
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no. 1 approach

[0025] 2. The second embodiment of the organic electroluminescence light-emitting device

no. 3 approach

[0027] 4. Components of organic electroluminescent light-emitting devices

no. 1 approach 〉

[0029] Hereinafter, specific embodiments of the organic electroluminescence light-emitting device (hereinafter, organic EL light-emitting device) of the present invention will be described. figure 1 A schematic configuration diagram showing an organic EL light-emitting device according to this embodiment. also, figure 1 The illustrated organic EL light-emitting device is configured to include a bottom-emission type organic electroluminescent element (hereinafter referred to as an organic EL element) that emits light from a substrate side.

[0030] figure 1 The illustrated organic EL light-emitting device 10 includes an organic EL element 12 on a flexible substrate 11 . Furthermore, the first sealing part 13 for sealing the organic EL element 12 is provided, and the moisture absorbent layer 16 is provided on the first sealing part 13 . Moreover, the flexible base material 11, the organic EL element 12, the 1st sealing part 13, and the 2nd sealing part 14 and the 3rd sealing ...

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Abstract

Provided is a highly reliable organic EL light emitting device that is equipped with: an organic EL element having a first electrode, an organic EL layer, and a second electrode, which are provided ona flexible base material; a first sealing section that seals, on the flexible base material, the organic EL element; a moisture absorbent layer that is provided on the first sealing section; and a second sealing section covering the moisture absorbent layer and the first sealing section.

Description

technical field [0001] The present invention relates to an organic electroluminescence light-emitting device having a hygroscopic agent layer within a sealing member. Background technique [0002] An organic EL light-emitting device including an organic electroluminescence (Electro Luminescence: EL) element has been put into practical use as a light-emitting device capable of planar light emission. Organic EL light-emitting devices are also used in displays and lighting equipment, and their development is expected. [0003] However, organic EL light-emitting devices have problems such as generation and growth of non-light-emitting portions called dark spots and deterioration of light-emitting characteristics when driven for a certain period of time. As a cause of such dark spots, the influence of water such as water vapor is mentioned. Even if the intrusion of moisture is extremely small, it will have a large influence on the characteristics of the organic EL element. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/04H01L51/50H05B33/02
CPCH05B33/02H05B33/04H10K50/8426H10K50/846H10K50/844H10K50/84
Inventor 菊地功太郎
Owner MERCK PATENT GMBH
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