Fingerprint sensor, method for manufacturing the same, and display device including the same

A display device comprising:

• a display panel displaying an image;
• and
• a fingerprint sensor disposed on one surface of the display panel and sensing light having passed through the display panel,
• wherein the fingerprint sensor includes:
• a thin film transistor disposed on a substrate;
• a first insulating layer disposed on the thin film transistor;
• a first sensing electrode disposed on the first insulating layer and connected to the thin film transistor;
• a second insulating layer disposed on the first sensing electrode and including an opening exposing the first sensing electrode;
• a sensing semiconductor layer disposed in the opening of the second insulating layer and on the first sensing electrode, and including an N-type semiconductor layer, an I-type semiconductor layer, and a P-type semiconductor layer;
• and
• a second sensing electrode disposed on the sensing semiconductor layer,
• wherein an upper surface of the sensing semiconductor layer and an upper surface of the second insulating layer.