Organic EL device

Patent metadata

Field	Value
Publication number	US-9997736-B2
Application number	US-201515536511-A
Country	US
Kind code	B2
Filing date	Dec 9, 2015
Priority date	Dec 15, 2014
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

An organic EL device includes a TFT substrate 1 , a first electrode 5 provided on the TFT substrate 1 , an organic EL layer 6 provided on the first electrode 5 , a second electrode 7 provided on the organic EL layer 6 , and a sealing film 10 covering the second electrode 7 . The TFT substrate 1 is provided thereon with upward projections 11 and 12 . The upward projections 11 and 12 are covered with the sealing film 10.

First claim

The invention claimed is:

1. An organic EL device comprising:
a substrate;
a first electrode provided on the substrate;
an organic EL layer provided on the first electrode;
a second electrode provided on the organic EL layer; and
a sealing film covering the second electrode; wherein
the sealing film includes a first sealing film and a second sealing film,
an outer surface of the first sealing film is covered with the second sealing film, the substrate is provided thereon with at least one upward projection,
the second sealing film covers the projection,
the at least one projection includes a first projection and a second projection,
the sealing film covers upper surfaces of the first projection and the second projection, and a recess provided between the first projection and the second projection,
the first projection and the second projection each have a linear portion having a substantially linear shape and disposed substantially in parallel with each other,
the linear portion of the first projection and the linear portion of the second projection are each provided with a slit, and
the slit in the linear portion of the first projection is positioned not to be superimposed on the slit in the linear portion of the second projection in a direction perpendicular to the linear portion of the first projection.

2. The organic EL device according to claim 1 , wherein
the first sealing film made of an organic material, and
the second sealing film made of an inorganic material.

3. The organic EL device according to claim 1 , further comprising a base layer, wherein
the projection is formed on the base layer.

4. The organic EL device according to claim 1 , wherein
the linear portion of the first projection has a right-angle corner at a corner of the substrate, and
the linear portion of the second projection has a slit at a corner of the substrate.

5. An organic EL device comprising:
a substrate;
a first electrode provided on the substrate;
an organic EL layer provided on the first electrode;
a second electrode provided on the organic EL layer; and
a sealing film covering the second electrode; wherein
the sealing film includes a first sealing film and a second sealing film,
an outer surface of the first sealing film is covered with the second sealing film,

the substrate is provided thereon with at least one upward projection,
the second sealing film covers the projection, and
the projection is formed outside the first sealing film.

6. The organic EL device according to claim 5 , wherein
the at least one projection includes a first projection and a second projection, and
the sealing film covers upper surfaces of the first projection and the second projection, and a recess provided between the first projection and the second projection.

7. The organic EL device according to claim 6 , wherein the first projection and the second projection each have a linear portion having a substantially linear shape and disposed substantially in parallel with each other.

8. The organic EL device according to claim 7 , wherein the at least one projection further includes at least one third projection provided between the linear portion of the first projection and the linear portion of the second projection.

9. The organic EL device according to claim 8 , wherein the at least one third projection is shaped to connect the linear portion of the first projection and the linear portion of the second projection, and includes a plurality of third projections.

10. The organic EL device according to claim 8 , wherein the at least one third projection has a pillar shape and includes a plurality of third projections.

11. The organic EL device according to claim 5 , wherein the projection is provided outside the organic EL layer and has a frame shape to surround the organic EL layer with no gap.

12. The organic EL device according to claim 5 , wherein
the first sealing film made of an organic material, and
the second sealing film made of an inorganic material.

13. The organic EL device according to claim 5 , further comprising a base layer, wherein the projection is formed on the base layer.

14. The organic EL device according to claim 9 , wherein an aperture is provided between two adjacent projections among the plurality of the third projections.

15. The organic EL device according to claim 5 , wherein
the linear portion of the first projection has a right-angle corner at a corner of the substrate, and
the linear portion of the second projection has a slit at a corner of the substrate.

16. An organic EL device comprising:
a substrate;
a first electrode provided on the substrate;
an organic EL layer provided on the first electrode;
a second electrode provided on the organic EL layer; and
a sealing film covering the second electrode; wherein
the sealing film includes a first sealing film and a second sealing film,
an outer surface of the first sealing film is covered with the second sealing film,

the substrate is provided thereon with at least one upward projection,
the second sealing film covers the projection,
the at least one projection includes a first projection and a second projection,
the sealing film covers upper surfaces of the first projection and the second projection, and a recess provided between the first projection and the second projection,
the first projection and the second projection each have a linear portion having a substantially linear shape and disposed substantially in parallel with each other,
the at least one projection further includes at least one third projection provided between the linear portion of the first projection and the linear portion of the second projection,
the at least one third projection is shaped to connect the linear portion of the first projection and the linear portion of the second projection, and includes a plurality of third projections, and
an aperture is provided between two adjacent projections among the plurality of the third projections.

17. The organic EL device according to claim 16 , wherein the at least one third projection has a pillar shape and includes a plurality of third projections.

18. The organic EL device according to claim 16 , wherein the projection is provided outside the organic EL layer and has a frame shape to surround the organic EL layer with no gap.

19. The organic EL device according to claim 16 , wherein
the first sealing film made of an organic material, and
the second sealing film made of an inorganic material.

20. The organic EL device according to claim 16 , further comprising a base layer, wherein
the projection is formed on the base layer.

Assignees

• Sharp Kk

Inventors

• Okamoto Tetsuya
• Hirase Takeshi
• Senoo Tohru
• Sonoda Tohru
• Fujiwara Seiji
• Nishikawa Daichi

Classifications

• H01L51/5206

  Electricity · mapped topic

• H01L51/5221

  Electricity · mapped topic

• H01L51/5012

  Electricity · mapped topic

• H01L27/3244

  Electricity · mapped topic

• H01L51/5246 Primary

  Electricity · mapped topic