Organic electroluminescent element and planar light-emitting unit
View Patent ↗Provided is an organic EL element, wherein the thickness of the organic EL element can be made small and the width of a seal can be made narrower, and change in light-emitting quality over time can be inhibited. The organic EL element ( 1 ) is configured to be provided with: a second electrode ( 13 ) provided so as to cover an organic compound layer ( 12 ); an inorganic insulation film ( 15 ) formed within a prescribed area within a non light-emitting area of a first electrode ( 11 ), and formed between the first electrode ( 11 ) and the second electrode ( 13 ); an inorganic film ( 14 ) provided so as to cover the second electrode ( 13 ); a sealing resin layer ( 3 ) provided so as to cover the inorganic film ( 14 ); and a sealing base material ( 4 ) provided upon the sealing resin layer ( 3 ).
1. An organic electroluminescent element, comprising:
an element substrate;
a first electrode formed on the element substrate;
an organic compound layer that is formed on the first electrode and includes a light-emitting layer;
a second electrode provided so as to cover the organic compound layer;
an inorganic insulation film that is formed on a prescribed area within a non light-emitting area of the first electrode and is formed between the first electrode and the second electrode;
an inorganic film provided so as to cover the second electrode;
a sealing resin layer provided so as to cover the inorganic film; and
a sealing base material provided on the sealing resin layer,
wherein the first electrode has an upper surface and a side surface, and
the sealing resin layer covers both the upper surface and the side surface of the first electrode.
2. The organic electroluminescent element according to claim 1 , wherein
both the element substrate and the sealing base material are constituted of a flexible base material.
3. The organic electroluminescent element according to claim 1 , wherein
a thickness of the inorganic film has a value of less than 1 μm.
4. The organic electroluminescent element according to claim 3 , wherein
the thickness of the inorganic film has a value in the range of 100 nm to 250 nm.
5. The organic electroluminescent element according to claim 1 , wherein
the inorganic film is constituted of a transparent inorganic film.
6. The organic electroluminescent element according to claim 5 , wherein
the inorganic film is constituted of a silicon oxide film.
7. The organic electroluminescent element according to claim 1 , wherein
the sealing resin layer is formed of a heat-curable resin.
8. The organic electroluminescent element according to claim 7 , wherein
the heat-curable resin is an epoxy-based resin.
9. The organic electroluminescent element according to claim 1 , wherein
the second electrode is a transparent electrode.
10. A planar light-emitting unit, comprising:
a plurality of organic electroluminescent elements; and
a support member that supports the plurality of organic electroluminescent elements arranged in a prescribed form, wherein
the organic electroluminescent element has an element substrate, a first electrode formed on the element substrate, an organic compound layer that is formed on the first electrode and includes a light-emitting layer, a second electrode provided so as to cover the organic compound layer, an inorganic insulation film that is formed on a prescribed area within a non light-emitting area of the first electrode and is formed between the first electrode and the second electrode, an inorganic film provided so as to cover the second electrode, a sealing resin layer provided so as to cover the inorganic film, and a sealing base material provided on the sealing resin layer,
wherein the first electrode has an upper surface and a side surface, and
the sealing resin layer covers both the upper surface and the side surface of the first electrode.