A display device includes a substrate comprising a display unit for displaying an image, a non-display unit around the display unit, and at least one first pad for sending an electrical signal to the display unit, a circuit board on the substrate and comprising at least one circuit terminal, and a conductive film between the substrate and the circuit board and including a plurality of conductive particles for electrically connecting the first pad and the circuit terminal, and an insulating resin surrounding the conductive particles, wherein the first pad includes a plurality of fine pad lines, and a region into which the insulating resin is dispersed during a thermal compressing operation located between adjacent ones of the fine pad lines.