A display device according to an embodiment includes a plurality of driving blocks including a plurality of gate lines and a gate shorting structure spaced apart from the gate lines by an amount equal to a trimming region; an equipotential line extending from one of the driving blocks to an adjacent driving block, part of which is removed by the amount equal to the trimming region; a gate dummy line extending from at least one of the driving blocks; a plurality of data lines intersecting the gate lines; and an active layer disposed between the gate dummy line and the data lines, wherein some part of the active layer that overlaps the gate dummy line but does not overlap the data lines is removed.