Display device and manufacturing method thereof

1. A display device comprising:

a first substrate including:

a display area including a plurality of pixels, and

a peripheral area positioned around the display area;

a thin film transistor positioned on the first substrate;

a pixel electrode layer positioned on the thin film transistor and including a plurality of pixel electrodes positioned in the display area; and

a voltage transmission line positioned in the peripheral area and transmitting a common voltage;

a passivation layer positioned between the thin film transistor and the pixel electrode layer, wherein the passivation layer includes an edge side surface exposing the voltage transmission line; and

a pixel definition layer positioned on the pixel electrode layer and including a peripheral portion overlapping a voltage transmission electrode,

wherein the peripheral portion includes:

a spacer which includes at least one part covering the edge side surface of the passivation layer, and the pixel electrode layer includes the voltage transmission electrode; and

an inclination portion connected to the spacer and positioned at a first side of the spacer, wherein the inclination portion has a concave inclination surface.

2. A display device comprising:

a first substrate including:

a display area including a plurality of pixels, and

a peripheral area positioned around the display area;

a thin film transistor positioned on the first substrate;

a pixel electrode layer positioned on the thin film transistor and including a plurality of pixel electrodes positioned in the display area; and

a pixel definition layer positioned on the pixel electrode layer and including a peripheral portion overlapping a voltage transmission electrode,

wherein the peripheral portion includes:

a spacer: and

an inclination portion connected to the spacer and positioned at a first side of the spacer, wherein the inclination portion has a concave inclination surface, and

an edge of the spacer at the first side has a shape of protrusions and depressions and includes recess portions and convex portions that are alternately arranged.

3. The display device of claim 2 , wherein the inclination portion includes a plurality of portions positioned in the recess portions in a plan view, and each of the plurality of portions included in the inclination portion has a concave inclination surface.

4. The display device of claim 3 , wherein the voltage transmission electrode includes a plurality of holes, and each of the plurality of the portions of the inclination portion respectively overlaps each of the holes.

5. The display device of claim 4 , wherein a hole adjacent to a first hole overlapping the inclination portion among the plurality of holes is disposed to be aligned with the first hole.

6. The display device of claim 4 , wherein a hole adjacent a first hole overlapping the inclination portion among the plurality of holes is disposed to be shifted from the first hole.

7. The display device of claim 2 , wherein an edge of the spacer at the first side having the protrusions and depressions shape includes a first convex portion and a second convex portion having different lengths from each other.

8. A display device comprising:

a first substrate including:

a display area including a plurality of pixels, and

a peripheral area positioned around the display area;

a thin film transistor positioned on the first substrate;

a pixel electrode layer positioned on the thin film transistor and including a plurality of pixel electrodes positioned in the display area; and

a pixel definition layer positioned on the pixel electrode layer and including a peripheral portion overlapping a voltage transmission electrode,

wherein the peripheral portion includes:

a spacer; and

an inclination portion connected to the spacer and positioned at a first side of the spacer, wherein the inclination portion has a concave inclination surface,

the voltage transmission electrode include a plurality of holes, and

the inclination portion overlaps the plurality of holes.

9. A method for manufacturing a display device, comprising:

forming a thin film transistor on a first substrate including a display area and a peripheral area around the display area;

forming, on the thin film transistor, a pixel electrode layer including a plurality of pixel electrodes positioned in the display area;

coating a photosensitive material on the pixel electrode layer to form a coating layer;

exposing the coating layer by using a photomask including a light transmissive part, a light blocking part, and a semi-transmissive part;

developing the exposed coating layer; and

hardening the developed coating layer to form a pixel definition layer including a peripheral portion overlapping a voltage transmission electrode,

wherein the peripheral portion includes a spacer and an inclination portion connected to the spacer and positioned at a first side of the spacer in the peripheral area, the first side facing toward the display area,

wherein an edge of the spacer at the first side has a shape of protrusions and depressions and includes recess portions and convex portions that are alternately arranged, and

wherein the inclination portion has a concave inclination surface, which disposed outside the display area and faces toward a boundary between the display area and the peripheral area.

10. The method of claim 9 , wherein the peripheral portion further includes a main portion connected to the spacer and positioned at a second side opposite to the first side of the spacer.

11. The method of claim 10 , wherein a thickness of the coating layer corresponding to the main portion is thicker than a thickness of the coating layer corresponding to the inclination portion.