DISPLAY DEVICE Russian patent published in 2014 - IPC G09G3/36 H01L27/146 

FIELD: physics.

SUBSTANCE: optical sensor provided on the substrate of the active matrix of a display device includes: a photodiode (D1a) for receiving incident light; a reset signal line (RSTa) for transmitting a reset signal (RST) to the optical sensor; a readout signal line (RWSa) for transmitting a readout signal (RWS) to the optical sensor; and a sensor switching element (M1a) for reading out a photoelectric current output from the photodiode (D1a), according to the readout signal, during a period from the transmission of the reset signal to the transmission of the readout signal. The potential VLS of a light shielding film (LS) provided on the back side of the photodiode (D1a) is set at a high level potential during a period which overlaps the period while the reset signal is transmitted.

EFFECT: high accuracy when capturing images by improving linearity of the sensitivity characteristics of the photodiode.

5 cl, 21 dwg