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AssigneeElectronics and Telecommunications Research Institute
InventorsGi-Heon Kim, Ji-Young Oh, Hye-Yong Chu, Yong-Suk Yang, Jeong-Ik Lee, Lee-Mi Do, Tae-Hyoung Zyung
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An organic electroluminescent device with an encapsulation film formed by wet processing and a manufacturing method thereof. The organic electroluminescent device includes a laminate structure including an anode, an organic light emitting layer and a cathode sequentially disposed on a substrate, and an encapsulation film having a polymer layer made of a polymerization product of a vinyl monomer covering the laminate structure. In the method for manufacturing the organic electroluminescent device, a laminate structure including an anode, an organic light emitting layer and a cathode sequentially disposed is formed on a substrate. An organic solution containing a vinyl monomer and a polymerization initiator is coated on the laminate structure. A polymerization reaction is induced to the organic solution coated on the laminate structure, thereby forming an encapsulation film made of a polymer layer on the laminate structure.
An organic electroluminescent device comprising:
A method for manufacturing an organic electroluminescent device comprising:
The method according to 11, wherein the polymerization initiator is a polymerization initiator using an oxidation-reduction reaction, selected from K2S2O8 and a redox initiator.
The method according to 11, wherein the organic solution further includes an oligomer having a molecular weight of 300˜3000.
The method according to 11, wherein coating the organic solution is performed by spin coating, bar coating, spreading or dipping.
The method according to 11, wherein in step of forming the encapsulation film, light is irradiated into the organic solution in order to induce a polymerization reaction to the organic solution.
The method according to 11, wherein heat is applied to the organic solution in order to induce a polymerization reaction to the organic solution.
The method according to 11, wherein the organic solution further includes a moisture absorbent selected from the group consisting of calcium, silica gel, zeolite and alkali metal.
The method according to 11, further comprising forming moisture-absorbing layer.
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Passivation; Containers; Encapsulations: encapsulations
Passivation; Containers; Encapsulations: comprising getter material or desiccants
Stock material or miscellaneous articles: electroluminescent
Stock material or miscellaneous articles: sheet including cover or casing
Term end not estimated
This application claims the priority of Korean Patent Application No. 2002-20908, filed Apr. 17, 2002, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.
1. Field of the Invention
The present invention relates to organic electroluminescent devices and methods for manufacturing the same, and more particularly, to organic electroluminescent device having an encapsulation film which can prevent the device from deteriorating and can prolong the life time of the device, and methods for manufacturing the same.
The above aspect and advantages of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings in which:
FIG. 1 is a cross-sectional view illustrating a method for manufacturing an organic electroluminescent device according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view illustrating a method for manufacturing an organic electroluminescent device according to a second embodiment of the present invention; and
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the thickness of layers and regions are exaggerated for purposes of clarity. Also, when it is said that a layer is “on” another layer or a substrate, the layer may directly exist on another layer or a third layer may be interposed therebetween.
FIG. 1 is a cross-sectional view for illustrating a manufacturing method of an organic electroluminescent device according to a first embodiment of the present invention.
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