Organic electroluminescent device and method of...

Stock material or miscellaneous articles – Composite – Of inorganic material

Reexamination Certificate

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C428S332000, C428S446000, C428S447000, C428S702000, C428S917000, C313S504000, C313S506000, C313S512000, C427S066000, C257S100000

Reexamination Certificate

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10841455

ABSTRACT:
An organic electroluminescent device which has a low moisture permeability and an oxygen permeability. The organic electroluminescent device includes a substrate, an organic light-emitting unit having a sequentially stacked structure of a first electrode, an organic film, and a second electrode formed on a surface of the substrate, and an organic-inorganic composite film made of a dehydrated polycondensate of a hydrolyzed product of trialkoxy metal formed on an upper surface of the second electrode of the organic light-emitting unit. The organic-inorganic composite film simplifies a manufacture process and has high visible light transmittance. Therefore, the organic-inorganic composite film can be used as an intermediate layer of a front emission type organic electroluminescent device. Also, the organic-inorganic composite film has excellent prevention function of the entry of moisture and/or oxygen. Therefore, the encapsulation of the device is ensured even when a sealing substrate is not separately used, thereby decreasing the total thickness of the device and increasing the life span of the device.

REFERENCES:
patent: 4753516 (1988-06-01), Doi et al.
patent: 6074962 (2000-06-01), Sakamoto et al.
patent: 7037599 (2006-05-01), Culligan et al.
patent: 2002/0105080 (2002-08-01), Speakman

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