Disclosed is a semiconductor package including a base film that has a first surface and a second surface opposite to the first surface, a plurality of input/output lines on the first surface of the base film, a semiconductor chip disposed on the first surface of the base film and connected to the input/output lines and including a central portion and end portions on opposite sides of the central portion, and a heat radiation pattern on the second surface of the base film. The heat radiation pattern corresponds to the semiconductor chip and has a plurality of openings that correspond to the end portions of the semiconductor chip and that vertically overlap the end portions of the semiconductor chip.