Display device

1. A display device comprising:

a display panel which has a display area having a pixel array part including a plurality of pixels, a frame area arranged on an outer peripheral side of the display area, and a driving part formation area having a driving part which drives the pixel array part,

the display panel comprises:

a substrate;

an organic light-emitting diode including a lower electrode provided for each pixel over the substrate, an organic EL layer provided over the lower electrode, and an upper electrode provided over the organic EL layer;

an organic insulating film which is provided in the display area and the frame area, and has an opening in a light-emitting area of the organic light-emitting diode;

a first inorganic insulating film formed on an upper surface of the organic insulating film in the frame area;

a planarizing film provided over the substrate; and

a second inorganic insulating film provided over the planarizing film and under the organic insulating film, wherein

the second inorganic insulating film includes a plurality of openings in the frame area,

the organic insulating film includes a plurality of pieces of organic insulating film which are separated each other in the frame area,

one of the plurality of pieces of organic insulating film and the planarizing film are in contact each other via one of the plurality of openings of the second inorganic insulating film, and

another one of the plurality of pieces of organic insulating film and the planarizing film are in contact each other via another one of the plurality of openings of the second inorganic insulating film.

2. The display device according to claim 1 , wherein

in the frame area, the one and the another one of the plurality of pieces of organic insulating film fill up the one and the another one of the plurality of openings of the second inorganic insulating film respectively.

3. The display device according to claim 2 , wherein

still another one of the plurality of pieces of the organic insulating film does not fill up any of the plurality of openings of the second inorganic insulating film, and

the still another one of the plurality of pieces of the organic insulating film is between the one of the plurality of pieces of the organic insulating film and the another one of the plurality of pieces of the organic insulating film.

4. The display device according to claim 1 , wherein

between the plurality of pieces of organic insulating film in the frame area, a lower surface of the upper electrode and an upper surface of a conductive film provided over the second inorganic insulating film are electrically connected.

5. The display device according to claim 4 , wherein

there is a contact region where the lower surface of the upper electrode and the upper surface of the conductive film are electrically connected, and

the contact region on a side distant from the driving part formation area is larger than the contact region on a side close to the driving part formation area.

6. The display device according to claim 4 , wherein

widths of the pieces of organic insulating film on a side distant from the driving part formation area are narrower than widths of the pieces of organic insulating film on a side close to the driving part formation area.

7. The display device according to claim 4 , wherein

arrangement intervals of the plurality of pieces of organic insulating film on a side distant from the driving part formation area are wider than arrangement intervals of the plurality of pieces of organic insulating film on a side close to the driving part formation area.

8. The display device according to claim 4 , wherein

the lower electrode and the conductive film are formed of a same material.

9. The display device according to claim 1 , wherein

the organic insulating film includes, in the frame area, the plurality of pieces of organic insulating film which extend from a side of the display area to a side of an edge of the frame area.

10. The display device according to claim 1 , wherein

the organic insulating film comprises the plurality of pieces of organic insulating film which extend, in the frame area, to run along a border between the display area and the frame area.

11. The display device according to claim 1 , wherein

the organic insulating film comprises the plurality of pieces of organic insulating film which are divided, in the frame area, in a direction from a side of the display area to a side of an edge of the frame area, and in a direction along a border between the display area and the frame area.

12. The display device according to claim 1 , wherein

a size of a formation area of the organic insulating film in the frame area is 80% or less of a total size of the frame area.

13. The display device according to claim 1 , wherein

a size of a formation area of the organic insulating film in the frame area is 65% or less of a total size of the frame area.

14. The display device according to claim 1 , wherein

a size of a formation area of the organic insulating film in the frame area is 30% or more of a total size of the frame area.

15. A display device including a display area and a frame area around the display area, the display device comprising:

a substrate;

a planarizing film on the substrate;

a lower electrode on the planarizing film in the display area;

an organic insulating film covering an edge part of the lower electrode and exposing a center part of the lower electrode, the organic insulating film located both in the display area and the frame area;

an organic EL layer covering the center part of the lower electrode;

an upper electrode covering the organic EL layer and the organic insulating film in the display area;

a first inorganic insulating film covering the upper electrode; and

a second inorganic insulating film between the planarizing film and the organic insulating film, wherein

the second inorganic insulating film includes a plurality of openings in the frame area,

the organic insulating film includes a first part and a second part separated from the first part in the frame area,

each of the first part and the second part is separated from the organic insulating film in the display area,

the first part is in contact with the planarization film via one of the plurality of openings of the second inorganic insulating film, and

the second part is in contact with the planarization film via another one of the plurality of openings of the second inorganic insulating film.

16. The display device according to claim 15 , wherein

the first inorganic insulating film extends from the display area to the frame area continuously, and

the first inorganic insulating film covers the first part and the second part.

17. The display device according to claim 16 , wherein

an upper surface of the first part and an upper surface of the second part are not in contact with any organic material.

18. The display device according to claim 15 , wherein

the organic insulating film includes a third part in the frame area separated from the organic insulating film in the display area,

the third part is in contact with the planarization film via still another one of the plurality of openings of the second inorganic insulating film, and

the third part is separated from the first part and is in contact with the second part.

19. The display device according to claim 15 , wherein

the organic insulating film includes a third part in the frame area separated from the organic insulating film in the display area,

the third part is in contact with the planarization film via still another one of the plurality of openings of the second inorganic insulating film, and

the third part is separated from both of the first part and the second part.