Display panel, display apparatus having the same and method of manufacturing the same

A method of manufacturing a display panel comprising:

• forming a circuit wiring and a plurality of output pads;
• and
• mounting a driving chip comprising output bumps on the output pads,
• wherein the output pads are arranged in a matrix formed having M row*N column, M and N are normal numbers, M is 3 or larger than 3, the M row extending in a first direction and the N column extending in a second direction which is substantially perpendicular to the first direction,
• each of the output pads has a center of the output pad spaced apart from a center of an adjacent output pad in the first direction by a distance D in the first direction, and each of the output pads is spaced apart from an adjacent output pad by a gap,
• each of the output pads has a center of the output pad spaced apart from a center of an adjacent output pad in the second direction by a pitch P in the first direction, each of the output pads extends in the second direction, and has a width in the first direction, and
• each of the output pads comprises a first side having a first length and a second side having a second length, the first side extending in the second direction, the second side is in parallel with the first side, and the second length is smaller than the first length, and
• an equation “P<D/(M−1)” is satisfied.