Chip on film, display pannel, display device including thereof

A display panel according to an aspect of the present invention comprises a display area in which a display element is disposed and a non-display area formed adjacent to the display area, in which a plurality of conductive pads are formed, wherein the conductive pads form a first pad column and a second pad column by being spaced apart at predetermined intervals, and a gap between at least one side end of the first pad column and the second pad column is larger than a central portion.