Display apparatus
A display apparatus includes a substrate having a display area and a non-display area; a first transistor including a first semiconductor layer on the substrate, a first insulating layer on the first semiconductor layer, a first gate electrode on the first insulating layer and a second insulating layer on the first gate electrode, a second transistor including a second semiconductor layer on the substrate and a second gate electrode on the first insulating layer, and a third transistor including a third semiconductor layer on the substrate and a third gate electrode on the second insulating layer.
1 . A display apparatus, comprising:
a substrate having a display area and a non-display area;
a first transistor including:
a first semiconductor layer on the substrate, the first semiconductor layer including oxide semiconductor,
at least a part of a first insulating layer on the first semiconductor layer,
a first gate electrode on the part of the first insulating layer and a second insulating layer on the first gate electrode;
a second transistor including a second semiconductor layer on the substrate and a second gate electrode on the first insulating layer; and
a third transistor including:
a third semiconductor layer on the substrate, the third semiconductor layer including oxide semiconductor,
at least another part of the first insulating layer on the third semiconductor layer,
at least a part of the second insulating layer on the first insulating layer, and
a third gate electrode on the part of the second insulating layer,
wherein a top surface of the second insulating layer is disposed below the third gate electrode and disposed over at least one of the first gate electrode and the second gate electrode.
2 . The display apparatus of claim 1 , wherein the first insulating layer is disposed on the second semiconductor layer, and the second insulating layer is disposed on the second gate electrode.
3 . The display apparatus of claim 1 , wherein a distance between the first semiconductor layer and the first gate electrode is a same distance as a distance between the second semiconductor layer and the second gate electrode.
4 . The display apparatus of claim 1 , wherein a distance between the first semiconductor layer and the first gate electrode is smaller than a distance between the third semiconductor layer and the third gate electrode.
5 . The display apparatus of claim 1 , wherein a distance between the second semiconductor layer and the second gate electrode is smaller than a distance between the third semiconductor layer and the third gate electrode.
6 . The display apparatus of claim 1 , wherein a capacitance between the third semiconductor layer and the third gate electrode is smaller than a capacitance between the first semiconductor layer and the first gate electrode, and wherein a capacitance between the third semiconductor layer and the third gate electrode is smaller than a capacitance between the second semiconductor layer and the second gate electrode.
7 . The display apparatus of claim 1 , wherein the first gate electrode is disposed in a different layer from the third gate electrode, and wherein the second gate electrode is disposed in a different layer from the third gate electrode.
8 . The display apparatus of claim 1 , further comprising:
a fourth gate electrode under the first semiconductor layer;
a fifth gate electrode under the second semiconductor layer; and
a sixth gate electrode under the third semiconductor layer.
9 . The display apparatus of claim 8 , wherein a distance between the fourth gate electrode and the first semiconductor layer is smaller than a distance between the fifth gate electrode and the second semiconductor layer, and wherein a distance between the fourth gate electrode and the first semiconductor layer is smaller than a distance between the sixth gate electrode and the third semiconductor layer.
10 . The display apparatus of claim 1 , further comprising:
a first source electrode and a first drain electrode on the first gate electrode;
a second source electrode and a second drain electrode on the second gate electrode; and
a third source electrode and a third drain electrode on the third gate electrode,
wherein the first source electrode is connected to a fourth gate electrode.
11 . The display apparatus of claim 1 , wherein the non-display area includes a gate driving part,
further comprising a fourth transistor in the gate driving part and including a fourth semiconductor layer, wherein the fourth semiconductor layer includes a polycrystalline semiconductor material.
12 . The display apparatus of claim 1 , further comprising:
an emitting device in the display area;
an encapsulation part on the emitting device;
a touch part on the encapsulation part; and
a color filter layer on the touch part or between the touch part and the encapsulation part.