A display panel is disclosed. In one aspect, the display panel includes a display unit including a plurality of pixels, an inspection circuit configured to apply a first inspection voltage to the display unit based on a first control signal, a pad portion electrically connected to the inspection circuit and configured to supply the first inspection voltage and the first control signal to the inspection circuit, and at least one external inspection line electrically connected between the inspection circuit and the pad portion. The external inspection line includes a plurality of transistors.