| CPC H10K 50/844 (2023.02) [H10K 59/131 (2023.02)] | 23 Claims |
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1. A display device comprising:
a protective layer comprising:
a first area located on a substrate;
a second area located on the first area;
a third area located on the second area; and
a fourth area located on the third area;
a first island part disposed in the first area of the protective layer, the first island part comprising:
a buffer layer disposed on the substrate; and
a semiconductor layer disposed on the buffer layer;
a second island part disposed in the second area of the protective layer, the second island part comprising:
a first gate insulating layer disposed on the first area; and
a first metal layer disposed on the first gate insulating layer;
a third island part disposed in the third area of the protective layer, the third island part comprising:
a second gate insulating layer disposed on the second area; and
a second metal layer disposed on the second gate insulating layer-; and
a fourth island part disposed in the fourth area of the protective layer, the fourth island part comprising:
an interlayer dielectric layer disposed on the third area; and
a third metal layer disposed on the interlayer dielectric layer, wherein
the buffer layer of the first island part has a profile conforming to a profile of the semiconductor layer in a plan view,
the first gate insulating layer of the second island part has a profile conforming to a profile of the first metal in a plan view,
the second gate insulating layer of the third island part has a profile conforming to a profile of the second metal layer in a plan view, and
the interlayer dielectric layer of the fourth island part has a profile conforming to a profile of the third metal layer in a plan view.
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