Display apparatus
A display apparatus includes: a substrate, a semiconductor layer arranged on the substrate and including a plurality of protrusions protruding in a direction perpendicular to the substrate, a gate insulating layer arranged on the semiconductor layer, a first gate layer arranged on the gate insulating layer and including a first edge arranged on at least one protrusion of the plurality of protrusions, a first interlayer-insulating layer arranged on the first gate layer, and a second gate layer arranged on the first interlayer-insulating layer, overlapping the first gate layer when viewed in the direction perpendicular to the substrate, and upwardly exposing at least a portion of the first edge when viewed in the direction perpendicular to the substrate.
1 . A display apparatus comprising:
a substrate;
a semiconductor layer arranged on the substrate and including a plurality of protrusions protruding in a direction perpendicular to the substrate;
a gate insulating layer arranged on the semiconductor layer;
a first gate layer arranged on the gate insulating layer and including a first edge arranged on at least one protrusion of the plurality of protrusions;
a first interlayer-insulating layer arranged on the first gate layer; and
a second gate layer arranged on the first interlayer-insulating layer, overlapping the first gate layer when viewed in the direction perpendicular to the substrate, and upwardly exposing at least a portion of the first edge when viewed in the direction perpendicular to the substrate.
2 . The display apparatus of claim 1 , wherein, when viewed in the direction perpendicular to the substrate, the at least one protrusion and the at least a portion of the first edge overlap each other.
3 . The display apparatus of claim 2 , wherein the at least a portion of the first edge includes a 1-1 st protruding portion protruding in the direction perpendicular to the substrate, correspondingly to the at least one protrusion.
4 . The display apparatus of claim 3 , wherein, when viewed in the direction perpendicular to the substrate, the second gate layer upwardly exposes the 1-1 st protruding portion.
5 . The display apparatus of claim 4 , wherein the 1-1 st protruding portion is spaced apart from the second gate layer.
6 . The display apparatus of claim 4 , wherein the second gate layer defines an opening or a notch portion therein upwardly exposing the 1-1 st protruding portion when viewed in the direction perpendicular to the substrate.
7 . The display apparatus of claim 6 , wherein the semiconductor layer has a 1-a th width in a first direction in which the first edge extends,
the opening or the notch portion has a 1-b th width in the first direction, and
the 1-a th width is less than the 1-b th width.
8 . The display apparatus of claim 1 , wherein the first gate layer further includes a second edge facing the first edge, and the second edge is arranged on at least one other protrusion of the plurality of protrusions.
9 . The display apparatus of claim 8 , wherein the second gate layer upwardly exposes at least a portion of the second edge when viewed in the direction perpendicular to the substrate.
10 . The display apparatus of claim 9 , wherein, when viewed in the direction perpendicular to the substrate, the at least one other protrusion of the plurality of protrusions and the at least a portion of the second edge overlap each other.
11 . The display apparatus of claim 10 , wherein the at least a portion of the second edge includes a 2-1 st protruding portion protruding in the direction perpendicular to the substrate, correspondingly to the at least one other protrusion.
12 . The display apparatus of claim 11 , wherein, when viewed in the direction perpendicular to the substrate, the second gate layer upwardly exposes the 2-1 st protruding portion.
13 . The display apparatus of claim 11 , wherein the 2-1 st protruding portion is spaced apart from the second gate layer.
14 . The display apparatus of claim 11 , wherein the second gate layer defines an opening or a notch portion therein upwardly exposing the 2-1 st protruding portion when viewed in the direction perpendicular to the substrate.
15 . The display apparatus of claim 14 , wherein the semiconductor layer has a 1-1 st width in a second direction in which the second edge extends,
the opening or the notch portion has a 1-2 nd width in the second direction, and
the 1-1 st width is less than the 1-2 nd width.
16 . A display apparatus comprising:
a substrate;
a semiconductor layer arranged on the substrate and including a plurality of protrusions on an upper surface thereof;
a first gate layer arranged on the semiconductor layer, insulated from the semiconductor layer, and including, on an upper surface thereof, a plurality of protruding portions having a shape corresponding to a shape of the plurality of protrusions; and
a second gate layer covering the first gate layer, insulated from the first gate layer, and, when viewed in a direction perpendicular to the substrate, upwardly exposing a 1-1 st protruding portion from among the plurality of protruding portions,
wherein the 1-1 st protruding portion is arranged on a first edge of the first gate layer.
17 . The display apparatus of claim 16 , wherein the second gate layer defines an opening or a notch portion therein upwardly exposing the 1-1 st protruding portion when viewed in the direction perpendicular to the substrate.
18 . The display apparatus of claim 16 , wherein the first gate layer includes a second edge facing the first edge,
the second gate layer upwardly exposes a 2-1 st protruding portion from among the plurality of protruding portions, and
the 2-1 st protruding portion is arranged on the second edge.
19 . The display apparatus of claim 18 , wherein the second gate layer defines an opening or a notch portion therein exposing the 2-1 st protruding portion when viewed in the direction perpendicular to the substrate.