Organic light-emitting display apparatus and method of manufacturing the same
An organic light-emitting display apparatus including a substrate; a display unit which defines an active area of the substrate and includes a thin film transistor; concave-convex portions protruded from the substrate in an area outside the active area; and an encapsulation layer which encapsulates the display unit. The thin film transistor includes an active layer, a gate insulating layer on the active layer, a gate electrode, a source electrode, a drain electrode, and an interlayer insulating layer between the gate electrode and the source electrode, and between the gate electrode and the drain electrode. The concave-convex portions include portions of the gate insulating layer and the interlayer insulating layer, and the encapsulation layer covers the concave-convex portions.
1. An organic light-emitting display apparatus comprising:
a substrate;
a display unit which defines an active area of the substrate, and comprises a thin film transistor and an organic light-emitting device which are connected to each other;
an encapsulation layer which is in the active area and encapsulates the display unit, the encapsulation layer in the active area disposing each of the thin film transistor and the organic light-emitting device between the substrate and the encapsulation layer; and
concave-convex portions protruded from the substrate in an area outside the active area and spaced apart from each other,
wherein
the thin film transistor in the active area comprises an insulating material layer which extends to the area outside of the active area,
the concave-convex portions comprise portions of the insulating material layer,
the concave-convex portions include two convex portions spaced apart from each other and one concave portion therebetween, and
a vertical distance between a top surface of the substrate and a top surface of the encapsulation layer in the region corresponding to the concave-convex portions is smaller than a vertical distance between the top surface of substrate and the top surface of the encapsulation layer in the region corresponding to the active area.
2. The organic light-emitting display apparatus of claim 1 , wherein
the insulating material layer within the thin film transistor comprises:
a gate insulating layer extending to the area outside the active area, and
an interlayer insulating layer on the gate insulating layer and extending to the area outside the active area, and
the concave-convex portions comprise portions of the gate insulating layer or portions of the interlayer insulating layer.
3. The organic light-emitting display apparatus of claim 2 , wherein each of the concave-convex portions has a double-layer structure comprising the portions of the gate insulating layer and the portions of the interlayer insulating layer.
4. The organic light-emitting display apparatus of claim 1 , wherein the concave-convex portions are covered with an insulating layer.
5. The organic light-emitting display apparatus of claim 4 , wherein the insulating layer contacts the concave-convex portions.
6. The organic light-emitting display apparatus of claim 4 , wherein the insulating layer comprises an inorganic layer.
7. The organic light-emitting display apparatus of claim 4 , wherein the insulating layer comprises an organic layer.
8. The organic light-emitting display apparatus of claim 4 , wherein the insulating layer comprises a stacked structure comprising more than one of an organic layer or an inorganic layer.
9. The organic light-emitting display apparatus of claim 1 , wherein the encapsulation layer has a stacked structure comprising an organic layer and an inorganic layer.
10. The organic light-emitting display apparatus of claim 1 , further comprising a protective layer between the encapsulation layer and the display unit.
11. An organic light-emitting display apparatus comprising:
a substrate;
a display unit which defines an active area of the substrate, and comprises a thin film transistor and an organic light-emitting device which are connected to each other;
an encapsulation layer which in the active area and encapsulates the display unit, the encapsulation layer in the active area disposing each of the thin film transistor and the organic light-emitting device between the substrate and the encapsulation layer; and
concave-convex portions protruded from the substrate in an area outside the active area and spaced apart from each other,
wherein
the thin film transistor in the active area comprises at least two insulating material layers which extend to the area outside of the active area, the two insulating material layers being between the substrate, and a source electrode or a drain electrode of the thin film transistor,
the concave-convex portions comprise portions of the two insulating material layers, and
a vertical distance between a top surface of the substrate and a top surface of the encapsulation layer in the region corresponding to the concave-convex portions is smaller than a vertical distance between the top surface of substrate and the top surface of the encapsulation layer in the region corresponding to the active area.
12. The organic light-emitting display apparatus of claim 11 , wherein the two insulating material layers within the thin film transistor comprise:
a gate insulating layer extending to the area outside the active area, and
an interlayer insulating layer on the gate insulating layer and extending to the area outside the active area.
13. The organic light-emitting display apparatus of claim 12 , wherein each of the concave-convex portions has a double-layer structure comprising the portions of the gate insulating layer and the portions of the interlayer insulating layer.
14. The organic light-emitting display apparatus of claim 11 , wherein the concave-convex portions are covered with an insulating layer.
15. The organic light-emitting display apparatus of claim 14 , wherein the insulating layer contacts the concave-convex portions.
16. The organic light-emitting display apparatus of claim 14 , wherein the insulating layer comprises an inorganic layer.
17. The organic light-emitting display apparatus of claim 14 , wherein the insulating layer comprises an organic layer.
18. The organic light-emitting display apparatus of claim 14 , wherein the insulating layer comprises a stacked structure comprising more than one of an organic layer or an inorganic layer.
19. The organic light-emitting display apparatus of claim 11 , wherein the encapsulation layer has a stacked structure comprising an organic layer and an inorganic layer.
20. The organic light-emitting display apparatus of claim 11 , further comprising a protective layer between the encapsulation layer and the display unit.