Display device

1 . A display device comprising:

a substrate;

a first electrode on the substrate;

a bank layer on the substrate and comprising an opening exposing the first electrode;

a spacer on the bank layer and having a first thickness in a direction perpendicular to a top surface of the substrate, the first thickness being a first distance between a lower surface of the spacer in contact with the bank layer and an upper surface of the spacer;

a protrusion on the bank layer, spaced apart from the spacer, and having a second thickness in the direction perpendicular to the top surface of the substrate that is less than the first thickness in the direction perpendicular to the top surface of the substrate, the second thickness being a second distance between a lower surface of the protrusion in contact with the bank layer and an upper surface of the protrusion; and

an emissive layer on the first electrode exposed by the bank layer,

wherein the protrusion comprises a first protrusion pattern and a second protrusion pattern spaced apart from the first protrusion pattern with a valley hole therebetween, and

wherein the first protrusion pattern, the second protrusion pattern, and the valley hole each have a width in one direction, and a sum of the width of the first protrusion pattern, the width of the second protrusion pattern, and the width of the valley hole in the one direction is less than a width of the opening.

2 . The display device of claim 1 , wherein the spacer is directly on an upper surface of the bank layer, and wherein the protrusion is directly on the upper surface of the bank layer, and the valley hole exposes the upper surface of the bank layer.

3 . The display device of claim 2 , further comprising:

a second electrode on the emissive layer,

wherein the first protrusion pattern comprises a first upper surface, and a first side surface facing the second protrusion pattern,

wherein the second protrusion pattern comprises a second upper surface, and a second side surface facing the first protrusion pattern, and

wherein the second electrode completely covers the first upper surface, the first side surface, the second upper surface, and the second side surface.

4 . The display device of claim 3 , wherein the second electrode is formed conformally to level differences created by the first protrusion pattern and the second protrusion pattern.

5 . The display device of claim 3 , further comprising:

an encapsulation layer on the second electrode,

wherein the encapsulation layer comprises a first inorganic film on the second electrode, an organic film on the first inorganic film, and a second inorganic film on the organic film, and

wherein the first inorganic film completely covers the first upper surface, the first side surface, the second upper surface, and the second side surface.

6 . The display device of claim 5 , wherein the first inorganic film is formed conformally to level differences created by the first protrusion pattern and the second protrusion pattern.

7 . The display device of claim 6 , wherein the valley hole is filled with the organic film.

8 . The display device of claim 7 , further comprising: a touch conductive layer directly on the encapsulation layer.

9 . The display device of claim 8 , wherein the touch conductive layer comprises a first touch conductive layer and a second touch conductive layer, and further comprises a first touch insulating layer between the first touch conductive layer and the second touch conductive layer, and wherein the first touch conductive layer is between the second inorganic film and the first touch insulating layer.

10 . The display device of claim 9 , further comprising:

a color filter layer on the touch conductive layer.

11 . The display device of claim 2 , wherein the bank layer comprises a same material as the spacer.

12 . The display device of claim 11 , wherein the protrusion comprises a same material as the bank layer.

13 . The display device of claim 11 , further comprising:

a second electrode on the emissive layer,

wherein the first protrusion pattern comprises a first upper surface, and a first side surface facing the second protrusion pattern,

wherein the second protrusion pattern comprises a second upper surface, and a second side surface facing the first protrusion pattern, and

wherein the second electrode completely covers the first upper surface and the second upper surface, and partially covers the first side surface and the second side surface.

14 . The display device of claim 13 , wherein the second electrode exposes a lower portion of the first side surface and exposes a lower portion of the second side surface.

15 . The display device of claim 1 , wherein the spacer is directly on an upper surface of the bank layer, and wherein the protrusion is directly on a side surface of the bank layer, and the valley hole exposes the side surface of the bank layer.

16 . A display device comprising:

a substrate;

a first electrode on the substrate;

a bank layer on the substrate and comprising an opening exposing the first electrode;

a spacer on the bank layer and a protrusion spaced apart from the spacer;

an emissive layer on the first electrode exposed by the bank layer;

a second electrode on the emissive layer; and

an encapsulation layer on the second electrode,

wherein the protrusion comprises a first protrusion pattern having a first width, and a second protrusion pattern having a second width and spaced apart from the first protrusion pattern with a valley hole therebetween,

wherein the encapsulation layer comprises a first inorganic film on the second electrode, an organic film on the first inorganic film, and a second inorganic film on the organic film,

wherein the first protrusion pattern comprises a first upper surface, and a first side surface facing the second protrusion pattern,

wherein the second protrusion pattern comprises a second upper surface, and a second side surface facing the first protrusion pattern,

wherein each of the second electrode and the first inorganic film covers the first upper surface, the first side surface, the second upper surface and the second side surface,

wherein the valley hole is filled with the organic film, wherein the valley hole has a third width, and

wherein the first width and the second width are greater than the third width.

17 . The display device of claim 16 , wherein the protrusion has a circular shape in a plan view.

18 . The display device of claim 16 , wherein the valley hole extends in a first direction, and wherein the first protrusion pattern and the second protrusion pattern are symmetrical with respect to the valley hole.

19 . The display device of claim 16 , further comprising:

a touch conductive layer directly on the encapsulation layer,

wherein the touch conductive layer comprises a first touch conductive layer and a second touch conductive layer, and further comprises a first touch insulating layer between the first touch conductive layer and the second touch conductive layer, and

wherein the first touch conductive layer is between the second inorganic film and the first touch insulating layer.

20 . An electronic device comprising:

a substrate;

a first electrode on the substrate;

a bank layer on the substrate and comprising an opening exposing the first electrode;

a protrusion on the bank layer having a first thickness; and

an emissive layer on the first electrode exposed by the bank layer,

wherein the protrusion comprises a first protrusion pattern and a second protrusion pattern spaced apart from the first protrusion pattern with a valley hole therebetween,

wherein the first protrusion pattern and the second protrusion pattern each have a first width when viewed from top, and the valley hole has a second width in a plan view,

wherein the second width is smaller than the first width, and

wherein the first thickness is equal to or less than 1.2 micrometers (μm).