Electroluminescence device

Patent metadata

Field	Value
Publication number	US-10319941-B2
Application number	US-201615551530-A
Country	US
Kind code	B2
Filing date	Feb 9, 2016
Priority date	Feb 16, 2015
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

An organic EL display device (electroluminescence device) including a TFT substrate (substrate), an organic EL element (electroluminescence element) disposed on the TFT substrate, a first inorganic film covering the organic EL element, at least one protruding body having a frame shape, the at least one protruding body being configured by an organic film and surrounding the electroluminescence element on the first inorganic film, a second inorganic film covering the first inorganic film and the at least one protruding body, and a leveled film configured by an organic film and provided on the second inorganic film.

First claim

The invention claimed is:

1. An electroluminescence device comprising:
a substrate;
an electroluminescence element provided on the substrate;
a first inorganic film covering the electroluminescence element;
at least one protruding body having a frame shape, the at least one protruding body configured by an organic film and surrounding the electroluminescence element on the first inorganic film;
a second inorganic film covering the first inorganic film and the at least one protruding body; and
a leveled film configured by an organic film and provided on the second inorganic film,
wherein an organic film layer configured by an organic film is disposed between the first inorganic film and the second inorganic film and covers the electroluminescence element,
the at least one protruding body surrounds the organic film,
a slit is formed between the organic film and the at least one protruding body,
a first inorganic film is exposed in the slit,
the second inorganic film contacts the first inorganic film in the slit,
the leveled film fills the slit, and
the at least one protruding body each has a protruding height greater than a total value of a thickness of the first inorganic film and a thickness of the organic film layer.

2. The electroluminescence device according to claim 1 ,
wherein the organic film layer has a thickness greater than a thickness of the first inorganic film.

3. The electroluminescence device according to claim 1 ,
wherein the at least one protruding body has a density greater than a density of the organic film layer.

4. The electroluminescence device according to claim 1 ,
wherein an organic film used for the organic film layer is identical to an organic film used for the leveled film.

5. The electroluminescence device according to claim 1 ,
wherein the at least one protruding body comprises a plurality of protruding bodies, and
the plurality of protruding bodies are disposed on the first inorganic film and sequentially surround the electroluminescence element.

6. The electroluminescence device according to claim 5 ,
wherein the electroluminescence element and the plurality of protruding bodies each include at least one corner including an are portion formed into an arc shape.

7. The electroluminescence device according to claim 1 ,
wherein the electroluminescence element and the at least one protruding body are formed into a round shape.

8. The electroluminescence device according to claim 1 ,
wherein the electroluminescence element and the at least one protruding body are formed into an oval shape.

9. The electroluminescence device according to claim 1 ,
wherein the at least one protruding body each has a protruding height greater than a thickness of the first inorganic film.

10. The electroluminescence device according to claim 1 ,
wherein the at least one protruding body each has a protruding height greater than a thickness of the electroluminescence element.

11. The electroluminescence device according to claim 1 ,
wherein the at least one protruding body each has a density greater than a density of the leveled film.

12. The electroluminescence device according to claim 1 ,
wherein a material having flexibility is used in the substrate.

13. The electroluminescence device according to claim 1 ,
wherein a foundation film is provided between the substrate and the electroluminescence element, and
the leveled film contacts the foundation film around a periphery of the electroluminescence device.

14. The electroluminescence device according to claim 1 ,
wherein the at least one protruding body each has a protruding height smaller than a thickness of the leveled film around a periphery of the electroluminescence device.

15. The electroluminescence device according to claim 5 ,
wherein another slit is formed between the plurality of protruding bodies,
a first inorganic film is exposed in the another slit,
the second inorganic film contacts the first inorganic film in the another slit, and
the leveled film fills the another slit.

16. An electroluminescence device comprising:
a substrate;
an electroluminescence element provided on the substrate;
a first inorganic film covering the electroluminescence element;
at least one protruding body having a frame shape, the at least one protruding body configured by an organic film and surrounding the electroluminescence element on the first inorganic film;
a second inorganic film covering the first inorganic film and the at least one protruding body; and
a leveled film configured by an organic film and provided on the second inorganic film,
wherein an organic film layer configured by an organic film is disposed between the first inorganic film and the second inorganic film and covers the electroluminescence element,
the at least one protruding body surrounds the organic film,
a slit is formed between the organic film and the at least one protruding body,
a first inorganic film is exposed in the slit,
the second inorganic film contacts the first inorganic film in the slit,
the leveled film fills the slit, and
the at least one protruding body has a density greater than a density of the organic film layer or a density of the leveled film.

17. The electroluminescence device according to claim 16 ,
wherein an organic film used for the organic film layer is identical to an organic film used for the leveled film.

18. The electroluminescence device according to claim 16 ,
wherein the at least one protruding body comprises a plurality of protruding bodies, and
the plurality of protruding bodies are disposed on the first inorganic film and sequentially surround the electroluminescence element.

19. An electroluminescence device comprising:
a substrate;
an electroluminescence element provided on the substrate;
a first inorganic film covering the electroluminescence element;
at least one protruding body having a frame shape, the at least one protruding body configured by an organic film and surrounding the electroluminescence element on the first inorganic film;
a second inorganic film covering the first inorganic film and the at least one protruding body; and
a leveled film configured by an organic film and provided on the second inorganic film,
wherein an organic film layer configured by an organic film is disposed between the first inorganic film and the second inorganic film and covers the electroluminescence element,
the at least one protruding body surrounds the organic film,
a slit is formed between the organic film and the at least one protruding body,
a first inorganic film is exposed in the slit,
the second inorganic film contacts the first inorganic film in the slit,
the leveled film fills the slit, and
an organic film used for the organic film layer is identical to an organic film used for the leveled film.

20. The electroluminescence device according to claim 19 ,
wherein the at least one protruding body comprises a plurality of protruding bodies, and
the plurality of protruding bodies are disposed on the first inorganic film and sequentially surround the electroluminescence element.

Assignees

• Sharp Kk

Inventors

• Hirase Takeshi
• Okamoto Tetsuya
• Senoo Tohru
• Sonoda Tohru
• Ishida Mamoru

Classifications

• H01L51/5209

  Electricity · mapped topic

• H01L51/5012

  Electricity · mapped topic

• H01L51/0097

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic

• H01L27/3262

  Electricity · mapped topic