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

A method of authenticating a fingerprint of a display device, the method comprising:

• generating a fingerprint image of a fingerprint sensed through a biometric sensor;
• determining a singular point of the fingerprint image through machine learning by selecting a plurality of fingerprint pieces from the fingerprint image;
• extracting an interest region including the singular point from the fingerprint image;
• and
• authenticating a fingerprint by comparing the interest region with registered fingerprint information.

A display device, comprising:

• a display panel including a plurality of pixels;
• and
• a fingerprint authentication device configured to sense a fingerprint input via the display panel,
• wherein the fingerprint authentication device comprises:
• a biometric sensor disposed on one surface of the display panel and configured to generate a sensing signal by sensing the fingerprint;
• an image processor configured to generate a fingerprint image based on the sensing signal;
• a singular point determiner circuit configured to select a plurality of fingerprint pieces from the fingerprint image, and determine a singular point of the fingerprint image by analyzing the selected fingerprint pieces, wherein the image processor is further configured to extract an interest region including the singular point from the fingerprint image based on a coordinate of the singular point;
• and
• an authenticator circuit configured to perform fingerprint authentication by comparing the interest region with registered fingerprint information.