Fingerprint sensor and display device including the same

A fingerprint sensor, comprising:

• a substrate;
• a sensor pixel disposed on the substrate and comprising a light sensing element through which a sensing current flows according to an amount of an incident light;
• a light-blocking conductive layer disposed on the sensor pixel and comprising a plurality of holes;
• a fingerprint pad disposed on the substrate;
• a flexible film disposed on the fingerprint pad;
• and
• a sensor circuit board electrically connected to the flexible film,
• wherein the flexible film or the sensor circuit board comprises a conductive connector to which a predetermined voltage is applied, and the light-blocking conductive layer is electrically connected to the conductive connector.

A display device, comprising:

• a display panel which displays an image;
• and
• a fingerprint sensor which is disposed on a surface of the display panel and senses a light passing through the display panel,
• wherein the fingerprint sensor comprises:
• a substrate;
• a sensor pixel disposed on the substrate and comprising a light sensing element through which a sensing current flows according to an amount of the light which is incident on the fingerprint sensor;
• a light-blocking conductive layer disposed on the sensor pixel and comprising a plurality of holes;
• a fingerprint pad disposed on the substrate;
• and
• a conductive connector connected to the fingerprint pad and to which a predetermined voltage is applied,
• wherein the light-blocking conductive layer is electrically connected to the conductive connector.

A display device, comprising:

• a light sensing layer comprising a plurality of sensor pixels, a first fingerprint pad, a second fingerprint pad, a first conductive connector, and a second conductive connector,
• wherein each sensor pixel comprises a light sensing element through which a sensing current flows according to an amount of an incident light;
• a display panel comprising a plurality of scan lines;
• and
• a light-blocking conductive layer comprising a plurality of holes and disposed between the light sensing layer and the display panel,
• wherein the first fingerprint pad is connected to the first conductive connector via a first voltage line, and the second fingerprint pad is connected to the second conductive connector via a second voltage line,
• wherein a predetermined voltage is transmitted from the first fingerprint pad, the first voltage line, and the first conductive connector to the light-blocking conductive layer, and the predetermined voltage is transmitted from the second fingerprint pad, the second voltage line, and the second conductive connector to the light-blocking conductive layer.