| 摘要 |
A display device which can authenticate fingerprint without a fingerprint sensor device and can be prevented from large size or reduced the size. A display device ( 1 ) is provided with a pixel or sub pixel comprising a photo diode ( 11 ) for detecting a light from a object, a holding capacitor ( 13 ) for holding a voltage (Vn 1 ) corresponding to an intensity of the light detected by the photo diode ( 11 ), and a refreshing means ( 18 ) for writing a voltage (Vdd or Vss) into the holding capacitor ( 13 ) (node N 1 ) on the basis of the voltage Vn 1 held in the holding capacitor ( 13 ).
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