Electroluminescent element with banks intersecting anode group
AssigneeSeiko Epson Corporation
InventorsHidekazu Kobayashi, Hiroshi Kiguchi, Tatsuya Shimoda
Life of this patent
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Abstract
In order to provide a bright, color, simple matrix-type electroluminescent element which can be manufactured by means of a simple process, banks 4 required for fabricating organic films head in an electroluminescent element by means of an ink-jet are formed such that they intersect orthogonally with anodes 6, and patterning of cathodes 1 is carried out using these banks. By means of this composition, cathode patterning becomes possible without increasing the number of processes. Therefore, it becomes possible to manufacture a full-color simple matrix-type electroluminescent element, inexpensively.
Claims15
An electroluminescent element provided with layers of electroluminescent material interposed between anodes and cathodes, the electroluminescent element comprising:
- an anode group formed by parallel arrangement of a plurality of anodes;
- a bank group formed by parallel arrangement of banks intersecting with said anode group and having a height which prevents outflow of said electroluminescent material introduced during manufacture;
- said electroluminescent material layers formed between said banks;
- and
- a cathode group, wherein cathodes running in the longitudinal direction of said electroluminescent material layers are provided on said electroluminescent material layers and are separated electrically for each of said electroluminescent material layers by means of said banks, and wherein said cathodes are formed in a continuous fashion over a side face of said banks facing in a prescribed direction, over the top face of said banks in direct contact with said top face, and over said electroluminescent material layers.
A method for manufacturing an electroluminescent element provided with layers of electroluminescent material interposed between anodes and cathodes, the method comprising:
- forming an anode group by parallel arrangement of a plurality of anodes on a substrate;
- forming a bank group by parallel arrangement of banks intersecting with said anode group and having a height which prevents outflow of said electroluminescent material in an electroluminescent material forming step;
- forming electroluminescent material layers by introducing a liquid of said electroluminescent material between said banks;
- and
- forming a cathode group wherein cathodes are electrically separated by means of said banks, by depositing cathode material onto said electroluminescent material layers from a direction which forms a prescribed angle with the longitudinal direction of said banks, wherein forming the cathode group includes forming the cathodes continuously over a side face of said banks facing in a prescribed direction, over the top face of said banks in direct contact with said top face, and over said electroluminescent material layers.
A method for manufacturing an electroluminescent element provided with layers of electroluminescent material interposed between anodes and cathodes, the method comprising:
- forming an anode group by parallel arrangement of a plurality on a substrate;
- forming a bank group by parallel arrangement of banks intersecting with said anode group and having a height which prevents outflow of said electroluminescent material in an electroluminescent material forming step;
- forming electroluminescent material layers by using an ink jet to introduce a liquid of said electroluminescent material between said banks;
- and
- forming a cathode group wherein cathodes are electrically separated by means of said banks, by depositing cathode material onto said electroluminescent material layers from a direction which forms a prescribed angle with the longitudinal direction of said banks, wherein forming the cathode group includes forming the cathodes continuously over a side face of said banks facing in a prescribed direction, over the top face of said banks in direct contact with said top face, and over said electroluminescent material layers.
Dependencies are inferred from the claim text.