Display apparatus and method of providing the same
A display apparatus includes a substrate including a display area including a first pixel area and a second pixel area which are adjacent to each other along a first direction, and a peripheral area outside the display area, a organic insulating layer disposed over the substrate, a connection metal layer disposed on the organic insulating layer, and a planarization layer covering the connection metal layer. The planarization layer includes a first inner surface defining a contact hole corresponding to the first pixel area and exposing at least a part of a connection metal layer to outside the planarization layer, the first inner surface being a forward-tapered inclined surface, and a second inner surface defining a 1-1 st hole which is between the first pixel area and the second pixel area along the first direction and exposes a part of the organic insulating layer to outside the planarization layer, the second inner surface being a reverse-tapered inclined surface.
1 . A display apparatus comprising:
a substrate comprising a display area comprising a first pixel area and a second pixel area which are adjacent to each other along a first direction, and a peripheral area outside the display area;
an organic insulating layer disposed over the substrate
a connection metal layer disposed on the organic insulating layer;
a planarization layer covering the connection metal layer, the planarization layer comprising:
a first inner surface defining a contact hole corresponding to the first pixel area and exposing the connection metal layer to outside the planarization layer, the first inner surface being a forward-tapered inclined surface, and
a second inner surface defining a 1-1 st hole which is between the first pixel area and the second pixel area along the first direction and exposes a part of the organic insulating layer to outside the planarization layer, the second inner surface being a reverse-tapered inclined surface;
an intermediate layer of a light emitting device layer which is disconnected at the 1-1 st hole of planarization layer; and a disconnected portion of the intermediate layer in the 1-1 st hole of the planarization layer.
2 . The display apparatus of claim 1 , wherein the 1-1 st hole extends along a second direction which intersects the first direction.
3 . The display apparatus of claim 2 , wherein
the display area further comprises a third pixel area which is adjacent to the first pixel area along the second direction,
the planarization layer further comprises a third inner surface defining a 2-1 st hole which is between the first pixel area and the third pixel area along the second direction and extends along the first direction, the third inner surface being a reverse-tapered inclined surface,
the intermediate layer of the light emitting device layer is further disconnected at the 2-1 st hole of the planarization layer, and another disconnected portion of the intermediate layer is in the 2-1 st hole of the planarization layer.
4 . The display apparatus of claim 3 , wherein the 1-1 st hole and the 2-1 st hole of the planarization layer are connected to each other.
5 . The display apparatus of claim 1 , further comprising a pixel-defining film disposed on the planarization layer,
wherein the pixel-defining film comprises a third inner surface defining a 1-2 nd hole overlapping the 1-1 st hole.
6 . The display apparatus of claim 5 , wherein the third inner surface of the 1-2 nd hole comprises a forward-tapered inclined surface.
7 . The display apparatus of claim 6 , wherein
the display area further comprises a third pixel area which is adjacent to the first pixel area along a second direction which intersects the first direction,
the planarization layer further comprises a fourth inner surface defining a 2-1 st hole which is between the first pixel area and the third pixel area along the second direction and extends along the first direction, the fourth inner surface comprising a reverse-tapered inclined surface,
the pixel-defining film further comprises a fifth inner surface defining a 2-2 nd hole overlapping the 2-1 st hole, the fifth inner surface comprising a forward-tapered inclined surface,
the intermediate layer of the light emitting device layer is further disconnected at the 2-1 st hole of planarization layer, and another disconnected portion of the intermediate layer is in the 2-1 st hole of the planarization layer.
8 . The display apparatus of claim 7 , wherein the 1-2 nd hole and the 2-2 nd hole of the pixel-defining film are connected to each other.
9 . The display apparatus of claim 5 , further comprising a pad located in the peripheral area.
10 . The display apparatus of claim 9 , wherein
the planarization layer covers the pad and comprises a fourth inner surface defining a pad hole exposing the pad to outside the planarization layer, the fourth inner surface comprising a forward-tapered inclined surface.
11 . The display apparatus of claim 10 , wherein a thickness of the planarization layer corresponding to the pad is less than a thickness of the planarization layer corresponding to the display area.
12 . The display apparatus of claim 5 , further comprising:
a pixel electrode which is between the planarization layer and the pixel-defining film;
a counter electrode covering the pixel-defining film; and
the intermediate layer which is between the pixel electrode and the counter electrode.
13 . The display apparatus of claim 12 , wherein the intermediate layer and the counter electrode cover the third inner surface which defines the 1-2 nd hole of the pixel-defining film.
14 . The display apparatus of claim 13 , wherein the intermediate layer and the counter electrode are outside of the 1-1 st hole of the planarization layer.
15 . The display apparatus of claim 13 , further comprising:
a residual layer in the 1-1 st hole of the planarization layer,
wherein
both the intermediate layer and the counter electrode are disconnected at the 1-1 st hole of the planarization layer, and
the residual layer comprises the disconnected portion of the intermediate layer together with a disconnected portion of the counter electrode.
16 . The display apparatus of claim 15 , wherein the residual layer is spaced apart from the second inner surface which defines the 1-1 st hole.