Fingerprint sensing unit and display device including the same

A fingerprint sensing unit, comprising:

• a substrate;
• a thin film transistor disposed on the substrate;
• a first insulating layer disposed on the substrate;
• a second insulating layer disposed on the first insulating layer and that has an opening that exposes at least a portion of the first insulating layer;
• and
• a sensing electrode disposed on the portion of the first insulating layer that is exposed by the opening, wherein the sensing electrode is connected to the thin film transistor.

A display device, comprising:

• a display unit;
• and
• a fingerprint sensing unit disposed on the display unit,
• wherein the display unit comprises:
• a base substrate;
• and
• an organic light emitting element disposed on the base substrate, and
• the fingerprint sensing unit comprises:
• a buffer layer disposed on the display unit;
• a thin film transistor disposed on the buffer layer;
• an insulating layer disposed on the buffer layer and that has an opening that exposes at least a portion of the buffer layer;
• and
• a sensing electrode disposed on the portion of the buffer layer that is exposed by the opening, wherein the sensing electrode is connected to the thin film transistor.