A display device according to one or more embodiments of the present disclosure includes a plurality of pixels located at crossing regions of a plurality of scan lines and a plurality of data lines; a data driver coupled to ends of the plurality of data lines at a first side and configured to supply a plurality of data signals to the plurality of data lines; an inspection unit coupled to ends of the plurality of data lines at a second side and configured to supply a plurality of inspection signals to the plurality of pixels; at least one detection line electrically coupled to the inspection unit and extending from a first side of the panel to a second side of the panel; and a reset transistor coupled between the detection line and a reset power supply and configured to turn on when it receives a first control signal.