Electroluminescent device and manufacturing method
AssigneeSharp Kabushiki Kaisha
InventorsTohru SONODA, Takeshi HIRASE, Tetsuya OKAMOTO, Tohru SENOO, Seiji FUJIWARA, Daichi NISHIKAWA, Mamoru ISHIDA
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Abstract
An organic EL display device 1 that includes a TFT substrate (substrate) 2 and an organic EL element (electroluminescent element) 4 provided on the TFT substrate 2 includes a sealing film 14 that seals the organic EL element 4. The sealing film 14 has a layered structure composed of an organic layer 14b and inorganic layers 14a, 14c. At least a peripheral portion 14b2 of the organic layer 14b has a lower carbon content than a central portion 14b1 of the organic layer 14b.
Claims13
An electroluminescent device comprising:
- a substrate;
- and
- an electroluminescent element provided on the substrate,
- wherein the electroluminescent device comprises a sealing film that seals the electroluminescent element,
- the sealing film has a layered structure composed of an organic layer and an inorganic layer, and
- in the sealing film, at least a peripheral portion of the organic layer has a lower carbon content than a central portion of the organic layer.
A method for producing an electroluminescent device that comprises a substrate and an electroluminescent element provided on the substrate,
- the production method comprising:
- a sealing film formation step of forming an organic layer and an inorganic layer using a CVD method or a sputtering method and forming a sealing film that has a layered structure composed of the organic layer and the inorganic layer and that seals the electroluminescent element;
- and
- a laser light irradiation step of irradiating at least a peripheral portion of the sealing film with laser light to lower a carbon content of at least a peripheral portion of the organic layer than a carbon content of a central portion of the organic layer.
Dependencies are inferred from the claim text.