OPTICAL FINGERPRINT SENSOR MODULE AND METHOD FOR OPERATING OPTICAL FINGERPRINT SENSOR MODULE

There is an optical biometric imaging device (102) configured to capture an image of an object (104) in contact with an outer surface (106) of the biometric imaging device (102), the biometric imaging device (102) comprising: an image sensor (200) comprising a photodetector pixel array (202) and image sensor circuitry configured to capture an image of the object (104) in contact with the outer surface of the imaging device (102); the image sensor (200) comprising a first electrically conductive structure (206) arranged adjacent to an active sensing area (208) of the photodetector pixel array (202); a display panel (210) arranged on top of and at a distance from the image sensor (200), the display panel (210) comprising a second electrically conductive structure (212) on a bottom side (214) of the display panel (210) and arranged to face the first electrically conductive structure (206) of the image sensor (200); and capacitive readout circuitry arranged and configured to detect a capacitance between the first