Display module

1. An organic EL display device comprising:

a plurality of pixels each including a pixel driving circuit formed on a substrate, respectively;

a current supply line;

wherein the pixel driving circuit includes a thin film transistor and a capacitor connected to the thin film transistor, the thin film transistor being connected to the current supply line;

a first insulation layer covering the thin film transistor;

a first electrode layer provided on the first insulation layer, wherein the first electrode layer is connected to the thin film transistor through a contact hole in the first insulation layer;

a second insulation layer is formed on the first insulation layer and the first electrode layer, the second insulation layer being provided with an aperture at the first electrode layer;

an organic light emitting layer formed on the second insulation layer and in the aperture and connected to the first electrode layer through the aperture; and

a second electrode layer formed on the organic light emitting layer and the second insulation layer,

wherein the second insulation layer includes an inner wall at the aperture, the organic light emitting layer being formed on the inner wall of the second insulation layer and at a bottom portion of the aperture,

a first edge portion of the second insulation layer is sandwiched between the organic light emitting layer and the first electrode layer,

a second edge portion of the second insulation layer is sandwiched between the organic light emitting layer and the first electrode layer,

a part of the second insulation layer is formed in the contact hole of the first insulation layer, said part of the second insulation layer including a portion formed in the contact hole and a portion formed about the contact hole between an upper surface of the first insulation film and a lower surface of the organic light emitting layer,

a first part of the first electrode layer is formed on an inner wall of the contact hole of the first insulation layer,

the first part of the first electrode layer is connected to the part of the second insulation layer connected to a first part of the organic light emitting layer,

the first part of the first electrode layer is arranged directly below the part of the second insulation layer, and the part of the second insulation layer is arranged directly below the first part of the organic light emitting layer,

the first part of the first electrode layer, the part of the second insulation layer, and the first part of the organic light emitting layer are arranged in this order,

the first edge portion of the second insulation layer is sandwiched between the part of the second insulation layer and the organic light emitting layer, and

a height of a top surface of the part of the second insulation layer, in the portion of the part of the second insulating layer formed above the contact hole, from the substrate is higher than a height of the first edge portion of the second insulation layer from the substrate, the top surface of the part of the second insulation layer being directly connected to the organic light emitting layer.

2. An organic EL display device according to claim 1 ,

wherein the first electrode layer comprises an anode electrode, and the second electrode comprises a cathode electrode.

3. The organic EL display device according to claim 1 ,

wherein the second electrode layer is comprised of a metal thin film.

4. The organic EL display device according to claim 1 ,

wherein the second insulation layer is formed by using a resin with fluidity.

5. The organic EL display device according to claim 1 ,

wherein the second insulation layer is formed by covering all edges of the first electrode layer.

6. The organic EL display device according to claim 1 ,

wherein the organic light emitting layer is divided with respect to each of the plurality of pixels, and

wherein the organic display device performs a color display by a color depending on organic materials of each of the plurality of pixels.

7. The organic EL display device according to claim 6 ,

wherein each of the plurality of pixels includes an organic emitting element,

wherein the organic emitting element includes a second part of the first electrode layer in the aperture, a second part of the organic light emitting layer in the aperture, and a part of the second electrode layer in the aperture,

wherein the second part of the first electrode layer is connected to the second part of the organic light emitting layer in the aperture, and the second part of the organic light emitting layer is connected to the part of the second electrode layer in the aperture,

wherein in plan view, the organic emitting element overlaps the capacitor and the thin film transistor, and

wherein in plan view, the organic emitting element is arranged outside the part of the second insulation layer, the first part of organic light emitting layer, and the first part of the first electrode layer.

8. An organic EL display device including:

a thin film transistor on a substrate;

a first insulation layer covering the thin film transistor;

a first electrode layer which is provided on the first insulation layer and which is connected to the thin film transistor through a contact hole in the first insulation layer;

a second insulation layer which is formed on the first insulation layer and the first electrode layer and which is provided with an aperture at the first electrode layer;

an organic light emitting layer which is formed on the second insulation layer and in the aperture and which is connected to the first electrode layer through the aperture; and

a second electrode layer formed on the organic light emitting layer,

wherein the organic light emitting layer is formed on the second insulation layer and on a side surface and bottom surface of the aperture,

an edge portion of the second insulation layer is sandwiched between the organic light emitting layer and the first electrode layer,

a part of the second insulation layer is formed in the contact hole of the first insulation layer, said part of the second insulation layer including a portion formed in the contact hole and a portion formed above the contact hole between an upper surface of the first insulation film and a lower surface of the organic light emitting layer,

a first part of the first electrode layer is formed on an inner wall of the contact hole of the first insulation layer,

a top surface of the first part of the first electrode layer is connected to a bottom surface of the part of the second insulation layer, and a top surface of the part of the second insulation layer is connected to a bottom surface of a first part of the organic light emitting layer, and

a height of a top surface of the part of the second insulation layer from the substrate is higher than a height of the edge portion of the second insulation layer from the substrate.

9. An organic EL display device according to claim 8 ,

wherein the first electrode layer comprises an anode electrode, and the second electrode layer comprises a cathode electrode.

10. The organic EL display device according to claim 8 ,

wherein the second electrode layer is comprised of a metal thin film.

11. The organic EL display device according to claim 8 ,

wherein the second insulation layer is formed by using a resin with fluidity.

12. The organic EL display device according to claim 8 ,

wherein the second insulation layer is formed by covering all edges of the first electrode layer.

13. The organic EL display device according to claim 8 , further including a plurality of pixels,

wherein the organic light emitting layer is divided with respect to each of the plurality of pixels, and

wherein the organic display device performs a color display by a color depending on organic materials of each of the plurality of pixels.

14. The organic EL display device according to claim 13 , further including a current supply line,

wherein the pixel including the thin film transistor and a capacitor connected to the thin film transistor, the thin film transistor connected to the current supply line,

wherein each of the plurality of pixels includes an organic emitting element,

wherein the organic emitting element includes a second part of the first electrode layer in the aperture, a second part of the organic light emitting layer in the aperture, and a part of the second electrode layer in the aperture,

wherein the second part of the first electrode layer is connected to the second part of the organic light emitting layer in the aperture, and the second part of the organic light emitting layer is connected to the part of the second electrode layer in the aperture,

wherein in plan view, the organic emitting element overlaps the capacitor and the thin film transistor, and

wherein in plan view, the organic emitting element is arranged outside the part of the second insulation layer, the first part of organic light emitting layer, and the first part of the first electrode layer.

15. The organic EL display device according to claim 14 , further including a passivation film which has a first region arranged directly above the aperture of the second insulation layer, and

a second region arranged directly above the part of the second insulation layer and is directly connected on the second electrode layer,

wherein a first thickness of the first region of the passivation film is thicker than a second thickness of the second region of the passivation film.

16. The organic EL display device according to claim 15 , wherein the first electrode layer comprises an anode electrode, and the second electrode layer comprises a cathode electrode, wherein the passivation film is transparent, and wherein the passivation film is sealed in a sealing material.

17. The organic EL display device according to claim 16 , wherein the second insulation layer includes a portion forming an inner wall of the aperture, the portion of the second insulation layer having a taper to decrease in thickness in a direction from a top portion of the aperture toward a bottom portion of the aperture, the inner wall of the aperture being located between the organic light emitting layer and the first electrode layer.

18. The organic EL display device according to claim 17 , wherein a surface of the passivation film has a higher degree of flatness than the second electrode layer.

19. An organic EL display device including:

a thin film transistor on a substrate;

a first insulation layer covering the thin film transistor;

a first electrode layer which is provided on the first insulation layer and is connected to the thin film transistor through a contact hole in the first insulation layer;

a second insulation layer which is formed on the first insulation layer and the first electrode layer and is provided with an aperture at the first electrode layer;

an organic light emitting layer which is formed on the second insulation layer and in the aperture and is connected to the first electrode layer through the aperture; and

a second electrode layer formed on the organic light emitting layer,

wherein a first part of the first electrode layer is formed directly above an inner wall of the contact hole of the first insulation layer, a part of the second insulation layer is formed directly above the first part of the first electrode layer in the contact hole of the first insulation layer, and a first part of the organic light emitting layer is formed directly above the part of the second insulation layer, and

a height of a top surface of the first part of the organic light emitting layer from the substrate is higher than a height of a top surface of a second part of the organic light emitting layer directly above a bottom surface of the aperture from the substrate.

20. An organic EL display device according to claim 19 ,

wherein the first electrode layer comprises an anode electrode, and the second electrode layer comprises a cathode electrode, and

wherein the second insulation layer is formed by using a resin with fluidity.

21. The organic EL display device according to claim 19 ,

wherein the second electrode layer is comprised of a metal thin film.

22. The organic EL display device according to claim 19 , further including a plurality of pixels,

wherein the organic light emitting layer is divided with respect to each of the plurality of pixels, and

wherein the organic display device performs a color display by a color depending on organic materials of each of the plurality of pixels,

an edge portion of the second insulation layer is sandwiched between the organic light emitting layer and the first electrode layer, and

a height of a top surface of the part of the second insulation layer from the substrate is higher than a height of the edge portion of the second insulation layer from the substrate.

23. The organic EL display device according to claim 22 , further including a current supply line,

wherein the pixel including the thin film transistor and a capacitor connected to the thin film transistor, the thin film transistor connected to the current supply line,

wherein the each of plurality of pixels includes an organic emitting element,

wherein the organic emitting element includes a second part of the first electrode layer in the aperture, the second part of the organic light emitting layer in the aperture, and a part of the second electrode layer in the aperture,

wherein the second part of the first electrode layer is connected to the second part of the organic light emitting layer in the aperture, and the second part of the organic light emitting layer is connected to the part of the second electrode layer in the aperture,

wherein in plan view, the organic emitting element overlaps the capacitor and the thin film transistor, and

wherein in plan view, the organic emitting element is arranged outside the part of the second insulation layer, the first part of the organic light emitting layer, and the first part of the first electrode layer.

24. The organic EL display device according to claim 23 , further including a passivation film which has a first region arranged directly above the aperture of the second insulation layer and a second region arranged directly above the part of the second insulation layer and is directly connected on the second electrode layer; and

a stacked insulation layer which is formed between the substrate and the first insulation layer and includes a gate insulation layer, a first predetermined insulation layer on the gate insulation layer, and a second predetermined insulation layer on the first predetermined insulation layer,

wherein the thin film transistor includes a semiconductor layer between the substrate and the gate insulation layer; a gate electrode on the semiconductor layer via the gate insulation layer; and a source electrode which is formed on the first predetermined insulation layer and penetrates the first predetermined insulation layer and the gate insulation layer to contact with the semiconductor layer,

wherein the second insulation layer covers the source electrode and has another contact hole in which a part of the first part of the first electrode layer is formed,

wherein a first thickness of the first region of the passivation film is thicker than a second thickness of the second region of the passivation film,

wherein the passivation film is transparent, and

wherein the passivation film is sealed in a sealing material.