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Organic electroluminescent panel and its mfg. method

A luminescent and organic technology, applied in the field of organic electroluminescent panels and their manufacturing, can solve problems such as adverse effects on appearance, increased product costs, and reduced yields

Active Publication Date: 2008-11-26
TOHOKU PIONEER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In this way, if the external light incident on the panel and the scattered light from the organic EL element are reflected on the inner surface of the sealing member or the surface of the drying member and emitted from the display surface side, a display formed by the emitted light from the organic EL element will be produced. Problems with reduced contrast
[0009] In addition, if the light reflected on the inner surface of the sealing member or the surface of the drying member is emitted from the display surface side, when the supporting substrate is viewed directly or obliquely from the display surface, etc., the dryness arranged inside the panel may sometimes be seen. parts, resulting in problems that adversely affect the appearance of
Therefore, if such defects in appearance are regarded as defective products, it is necessary to design with high precision to prevent the incidence of external light and scattered light, and it is also necessary to improve the accuracy of the arrangement position of the drying parts, so there is a product gap. The problem of lower yield and higher product cost

Method used

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  • Organic electroluminescent panel and its mfg. method
  • Organic electroluminescent panel and its mfg. method
  • Organic electroluminescent panel and its mfg. method

Examples

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Embodiment

[0041] Hereinafter, as an embodiment of the present invention, specific examples related to the constituent members of the above-mentioned embodiment will be given.

[0042] [Drying unit 14] As the drying unit 14, a physical desiccant (zeolite, silica gel, carbon, carbon nanotube, etc.), a chemical moisture absorbent described later, an organic metal complex dissolved in a petroleum solvent (toluene, dihydrogen, etc.) can be used. Monomers such as desiccants such as toluene, aliphatic organic solvents, etc.) can also be used as hygroscopic molded articles shown below.

[0043] The hygroscopic molded article is a molded article in which a hygroscopic agent is dispersed in a resin component (binder). As the hygroscopic agent, any substance may be used as long as it has a function of at least absorbing moisture, but a compound that can chemically adsorb moisture and maintain a solid state even after absorbing moisture is particularly preferable. Examples of such compounds includ...

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Abstract

Organic EL panel and its manufacturing method. An organic EL panel (10) includes a support substrate (11) and an organic EL device (12) which is mounted on the support substrate and formed by interposing an organic layer containing at least a luminescent layer between a pair of electrodes. By bonding a cover (13) onto the support substrate (11) through an adhesive agent (15), an enclosing space is formed by enclosing the organic EL device (12) with the support substrate (11) and the cover (13). A colored desiccating member (14) is provided within the enclosing space on the internal surface of the cover (13) opposite to the support substrate (11). To improve the contrast of display surface and to eliminate an appearance trouble that desiccating member inside panel will be seen from the display side.

Description

technical field [0001] The present invention relates to an organic electroluminescent (hereinafter referred to as EL: Electroluminescence) panel and a manufacturing method thereof. Background technique [0002] The organic EL panel is based on an organic EL element, which is formed by arranging the organic EL element as a unit surface light-emitting component on a flat substrate. The organic EL element is formed by forming a first electrode on a supporting substrate, and then forming An organic layer including a light-emitting layer made of an organic compound, on which a second electrode is formed. [0003] It is known that the characteristics of an organic EL panel deteriorate when the organic layers and electrodes are exposed to the outside air. This is caused by the infiltration of water into the interface between the organic layer and the electrode, hindering the injection of electrons, and then producing dark spots as non-luminous regions, or by corrosion of the elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L51/56H01L27/32H05B33/04H01L51/50H05B33/10H05B33/14
CPCH10K50/846H10K50/841H10K50/8426H10K50/865H10K50/86H10K71/00
Inventor 川崎由浩内藤武实大下勇野中吉隆增田大辅
Owner TOHOKU PIONEER CORP
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