A display device comprising an integrated, optically operating proximity sensor system for detecting an object, such as e.g. a hand or a finger of a person's hand, present within an observation space in front of the display device, in particular for gesture recognition and/or far-field sensing, the display device being provided with - a display unit having a front side with a display surface displaying information, an edge region adjacent to the display surface and not used for the display of information, and a rear side, and - a proximity sensor system comprising at least one transmitter for emitting sensor radiation into the observation space, and comprising at least one receiver for receiving sensor radiation effected from the observation space, - wherein the at least one transmitter of the proximity sensor system is arranged below the display unit, e.g. below the region occupied by the display surface, or below the edge region of the display unit or on the rear side of the display unit or facing the rear side of the display unit or in the display unit, and the at least one receiver of the proximity sensor system is arranged in the edge region adjacent to the display surface on the front or the rear side of the display unit, - wherein the display unit comprises a TFT display panel having an upper side forming the front side of the display unit which comprises an area aligned with the display surface and having TFT transistors forming the display surface, and a protrusion region surrounding this area and forming the edge region, and having a lower side facing away from the upper side, and comprises a color filter layer arranged above or on the upper side of the display panel, - wherein the receivers of the proximity sensor system is arranged within the protrusion region of the display panel on the upper or the lower side thereof, and - wherein the receivers of the proximity sensor system are each configured as a semiconductor diode comprising semiconductor layers (94, 96, 98) formed in TFT technology on the display panel and arranged side-by-side or above each other and, further, adjacent to each other. - a display unit having a front side with a display surface displaying information, an edge region adjacent to the display surface and not used for the display of information, and a rear side, and - a proximity sensor system comprising at least one transmitter for emitting sensor radiation into the observation space, and comprising at least one receiver for receiving sensor radiation effected from the observation space, - wherein the at least one transmitter of the proximity sensor system is arranged below the display unit, e.g. below the region occupied by the display surface, or below the edge region of the display unit or on the rear side of the display unit or facing the rear side of the display unit or in the display unit, and the at least one receiver of the proximity sensor system is arranged in the edge region adjacent to the display surface on the front or the rear side of the display unit, - wherein the display unit comprises a TFT display panel having an upper side forming the front side of the display unit which comprises an area aligned with the display surface and having TFT transistors forming the display surface, and a protrusion region surrounding this area and forming the edge region, and having a lower side facing away from the upper side, and comprises a color filter layer arranged above or on the upper side of the display panel, - wherein the receivers of the proximity sensor system is arranged within the protrusion region of the display panel on the upper or the lower side thereof, and - wherein the receivers of the proximity sensor system are each configured as a semiconductor diode comprising semiconductor layers (94, 96, 98) formed in TFT technology on the display panel and arranged side-by-side or above each other and, further, adjacent to each other.