A display panel (DISP) comprising: a plurality of common electrodes; a plurality of phototransistors, two or more phototransistors among the plurality of phototransistors being disposed in an area corresponding to one of the plurality of common electrodes; a plurality of photo-control lines, wherein each of the photo-control lines is electrically connected to a gate electrode of at least one phototransistor among the plurality of phototransistors; a plurality of photo-driving lines, wherein each of the photo-driving lines is electrically connected to a first electrode of the at least one phototransistor among the plurality of phototransistors, and a plurality of read-out lines, wherein one of the read-out lines is electrically connected to one single common electrode among the plurality of common electrodes and is electrically connected to second electrodes of all of the phototransistors disposed in the area corresponding to said single common electrode to which the read-out line is electrically connected, wherein a touch sensing configuration of the display panel (DISP) comprises the plurality of common electrodes serving as touch sensors and the plurality of read-out-lines, wherein the plurality of read-out-lines are electrically connected to the plurality of common electrodes; and wherein a photo sensing configuration of the display panel (DISP) comprises a plurality of photosensors, the plurality of photo-driving lines and the photo-control lines, the plurality of common electrodes and the plurality of read-out-lines, wherein each photosensor includes one of the plurality of phototransistors, wherein a photo-driving signal (Vdr) and a photo-control signal (Vsto) are transferred to the plurality of phototransistors, wherein the plurality of read-out lines and the plurality of common electrodes are commonly used for simultaneously performing touch sensing and photo sensing during a blank period, wherein the photo-driving line and the first electrode of the phototransistor are electrically connected to each other by a connection pattern disposed on a different layer from the photo-driving line; a plurality of data lines, each data line among the plurality of data lines being disposed between two corresponding read-out lines among the plurality of read-out lines, wherein a portion of the connection pattern overlaps a portion of the data line. a plurality of common electrodes; a plurality of phototransistors, two or more phototransistors among the plurality of phototransistors being disposed in an area corresponding to one of the plurality of common electrodes; a plurality of photo-control lines, wherein each of the photo-control lines is electrically connected to a gate electrode of at least one phototransistor among the plurality of phototransistors; a plurality of photo-driving lines, wherein each of the photo-driving lines is electrically connected to a first electrode of the at least one phototransistor among the plurality of phototransistors, and a plurality of read-out lines, wherein one of the read-out lines is electrically connected to one single common electrode among the plurality of common electrodes and is electrically connected to second electrodes of all of the phototransistors disposed in the area corresponding to said single common electrode to which the read-out line is electrically connected, wherein a touch sensing configuration of the display panel (DISP) comprises the plurality of common electrodes serving as touch sensors and the plurality of read-out-lines, wherein the plurality of read-out-lines are electrically connected to the plurality of common electrodes; and wherein a photo sensing configuration of the display panel (DISP) comprises a plurality of photosensors, the plurality of photo-driving lines and the photo-control lines, the plurality of common electrodes and the plurality of read-out-lines, wherein each photosensor includes one of the plurality of phototransistors, wherein a photo-driving signal (Vdr) and a photo-control signal (Vsto) are transferred to the plurality of phototransistors, wherein the plurality of read-out lines and the plurality of common electrodes are commonly used for simultaneously performing touch sensing and photo sensing during a blank period, wherein the photo-driving line and the first electrode of the phototransistor are electrically connected to each other by a connection pattern disposed on a different layer from the photo-driving line; a plurality of data lines, each data line among the plurality of data lines being disposed between two corresponding read-out lines among the plurality of read-out lines, wherein a portion of the connection pattern overlaps a portion of the data line.