A display device which comprises at least one screen, a frame into which the screen is fitted, the display device comprising; - at least two transmitters configured to generate infrared light beams or ultrasonic signal beams, located on one edge of the frame; - at least one receiver, configured to detect the beams coming from at least one transmitter and reflected from an obstacle and the at least one receiver is placed between two transmitters on the same edge of the frame; wherein said display device further comprises at least one scanning means which is configured to sequentially activate said transmitters such that transmitters located next to same receiver are not activated simultaneously, to detect a sense signal level of receivers, and to detect the position of the obstacle when the obstacle is in contact with the screen according to the detected sense signal level of the receiver, characterized in that the at least one scanning means is configured to activate an on screen menu which is used for adjustment of control parameters, when the obstacle becomes proximate to the screen, wherein the on screen menu comprises a plurality of touch areas, wherein a touch area from among the plurality of touch areas is centered in an origin of two lines going to the center of one of the at least two transmitters and one of the at least one receivers neighboring said one transmitter, the angle between the two lines being set to 90°, the touch areas being substantially rectangular and non-overlapping and the respective centers of the plurality of touch areas being each at an equal distance to the one edge of the frame; and comprising at least one adjusting means configured to decrease at least one of the intensity of a backlight of the screen and a volume level of an audio output means comprised by the display device when an obstacle is detected by the scanning means. - at least two transmitters configured to generate infrared light beams or ultrasonic signal beams, located on one edge of the frame; - at least one receiver, configured to detect the beams coming from at least one transmitter and reflected from an obstacle and the at least one receiver is placed between two transmitters on the same edge of the frame; wherein said display device further comprises at least one scanning means which is configured to sequentially activate said transmitters such that transmitters located next to same receiver are not activated simultaneously, to detect a sense signal level of receivers, and to detect the position of the obstacle when the obstacle is in contact with the screen according to the detected sense signal level of the receiver, characterized in that the at least one scanning means is configured to activate an on screen menu which is used for adjustment of control parameters, when the obstacle becomes proximate to the screen, wherein the on screen menu comprises a plurality of touch areas, wherein a touch area from among the plurality of touch areas is centered in an origin of two lines going to the center of one of the at least two transmitters and one of the at least one receivers neighboring said one transmitter, the angle between the two lines being set to 90°, the touch areas being substantially rectangular and non-overlapping and the respective centers of the plurality of touch areas being each at an equal distance to the one edge of the frame; and comprising at least one adjusting means configured to decrease at least one of the intensity of a backlight of the screen and a volume level of an audio output means comprised by the display device when an obstacle is detected by the scanning means.