A digitizer including a flexible printed circuit film including a folding area configured to be folded, and having a first surface and a second surface opposite to the first surface, a plurality of first lines disposed on the first surface of the flexible printed circuit film and extending in a first direction, and a plurality of second lines disposed on the second surface of the flexible printed circuit film and extending in a second direction crossing the first direction, in which the first lines and the second lines define a grid area overlapping the folding area on a plane, and the flexible printed circuit film includes a penetration hole in the grid area.