Display device, electronic device including the same, and driving method thereof

A display device, comprising:

• a display panel in which a plurality of unit pixels are arranged, at least one of the plurality of unit pixels including a plurality of sub-pixels and at least one photosensor;
• a data driving circuit configured to output a data signal to display an image using the plurality of sub-pixels;
• a readout circuit configured to read a sensing signal from the at least one photosensor;
• a scan driving circuit configured to output a scan signal to the plurality of sub-pixels and the at least one photosensor;
• and
• a timing controller configured to control driving timings of the data driving circuit, the readout circuit, and the scan driving circuit in response to a control signal,
• wherein the timing controller is configured to:
• control a plurality of sub-pixels located in a first area of the display panel to display an image of a first pattern;
• read a plurality of sensing signals from a plurality of photosensors located in the first area while the first pattern is displayed, and generate a fingerprint image based on the plurality of sensing signals;
• and
• when fingerprint authentication based on the fingerprint image passes, control a plurality of sub-pixels located in a second area of the display panel to display an image of a second pattern, and read a plurality of sensing signals from a plurality of photosensors located in a third area around the second area while the second pattern is displayed.