Fingerprint authentication device, display device including the same, and method of authenticating fingerprint

A fingerprint authentication device comprising:

• a sensor device including a first area and a second area in a plan view and sensing light reflected by a fingerprint;
• and
• a first optical filter disposed on the sensor device, overlapping the first area and non-overlapping the second area in the plan view, and blocking the light of a first wavelength range.

A method of authenticating a fingerprint performed in a fingerprint authentication device including a sensor device including a first area and a second area in a plan view and sensing light, and a first optical filter disposed on the sensor device, overlapping the first area and non-overlapping the second area in the plan view, and blocking the light of a first wavelength range, the method comprising:

• generating sensing data including first sensing data corresponding to the first area and second sensing data corresponding to the second area, through the sensor device;
• and
• determining whether a sensed fingerprint corresponding to the sensing data is a fake fingerprint based on the first sensing data and the second sensing data.