Display apparatus

1 . A display apparatus comprising:

a substrate comprising a display area and a peripheral area around the display area;

a pixel circuit in the display area and a display device connected to the pixel circuit;

a thin-film encapsulation layer covering the display device and comprising at least one inorganic film and at least one organic film;

a first power supply line and a second power supply line in the peripheral area and spaced apart from each other; and

a dam in the peripheral area and surrounding the display area, the dam comprising a first portion at least partially overlapping the first power supply line and a second portion at least partially overlapping the second power supply line,

wherein the first portion and the second portion of the dam have different stacked structures from each other.

2 . The display apparatus of claim 1 , further comprising a first organic insulating layer and a second organic insulating layer stacked between the pixel circuit and the display device,

wherein the first portion comprises a 1-1 th layer that is a lowermost layer and is formed of a same material as a material of the first organic insulating layer, and the second portion comprises a 2-1 th layer that is a lowermost layer and is formed of a same material as a material of the second organic insulating layer.

3 . The display apparatus of claim 2 , wherein the first power supply line is located over the 1-1 th layer, and the second power supply line is located under the 2-1 th layer.

4 . The display apparatus of claim 2 , wherein

the first power supply line is electrically connected to a counter electrode of the display device, and

the second power supply line is configured to transmit a driving voltage to the pixel circuit.

5 . The display apparatus of claim 1 , further comprising a detection wiring in the peripheral area of the substrate, and clad by the first portion of the dam.

6 . The display apparatus of claim 5 , wherein the detection wiring at least partially overlaps the first power supply line.

7 . The display apparatus of claim 1 , wherein the first portion of the dam is provided by stacking a 1-1 th layer, a 1-2 th layer, and a 1-3 th layer, which are formed of an organic material, and the second portion is provided by stacking a 2-1 th layer and a 2-2 th layer,

wherein the 1-2 th layer and the 2-1 th layer are integrally provided.

8 . The display apparatus of claim 7 , wherein the 1-3 th layer and the 2-2 th layer are integrally provided, and a thickness of the 2-2 th layer is greater than a thickness of the 1-3 th layer.

9 . The display apparatus of claim 7 , wherein the second portion further comprises a 2-3 th layer on the 2-2 th layer.

10 . The display apparatus of claim 1 , wherein heights of the first portion and the second portion of the dam from a top surface of the substrate are at a same level.

11 . The display apparatus of claim 1 , further comprising an inner dam between the dam and the display area and spaced apart from the dam,

wherein a height of the inner dam is equal to or less than a height of the dam.

12 . The display apparatus of claim 1 , wherein the peripheral area comprises a bending area bent about a bending axis, an inorganic insulating layer in the bending area comprises a groove, and an organic insulating layer is in the groove.

13 . A display apparatus comprising:

a substrate comprising a display area and a peripheral area around the display area;

a pixel circuit in the display area and a display device connected to the pixel circuit;

a first organic insulating layer and a second organic insulating layer stacked between the pixel circuit and the display device;

a wiring between the first organic insulating layer and the second organic insulating layer;

a pixel-defining film on the second organic insulating layer, and defining an emission area of the display device;

a thin-film encapsulation layer covering the display device and comprising at least one inorganic film and at least one organic film;

a first power supply line and a second power supply line in the peripheral area and spaced apart from each other;

a first dam in the peripheral area surrounding the display area; and

a second dam surrounding the first dam, the second dam comprising a first portion at least partially overlapping the first power supply line and a second portion at least partially overlapping the second power supply line,

wherein the first portion and the second portion of the second dam have different stacked structures from each other.

14 . The display apparatus of claim 13 , wherein the first portion comprises a 1-1 th layer formed of a same material as a material of the first organic insulating layer and a 1-2 th layer formed of a same material as a material of the second organic insulating layer.

15 . The display apparatus of claim 14 , wherein a part of the first power supply line is between the 1-1 th layer and the 1-2 th layer.

16 . The display apparatus of claim 13 , wherein the second portion comprises a 2-1 th layer that is a lowermost layer and is formed of a same material as a material of the second organic insulating layer.

17 . The display apparatus of claim 13 , further comprising a detection wiring in the peripheral area of the substrate and clad by the first portion of the second dam.

18 . The display apparatus of claim 13 , wherein the first portion of the second dam is provided by stacking a 1-1 th layer, a 1-2 th layer, and a 1-3 th layer formed of an organic material, and the second portion is provided by stacking a 2-1 th layer and a 2-2 th layer,

wherein the 1-2 th layer and the 2-1 th layer are integrally provided.

19 . The display apparatus of claim 18 , wherein the 1-3 th layer and the 2-2 th layer are integrally provided, and a thickness of the 2-2 th layer is greater than a thickness of the 1-3 th layer.

20 . The display apparatus of claim 13 , wherein the display area has a circular shape.