Patent ID: 8096641

Claim:
A flexible printed circuit board included in a liquid discharge head including a liquid discharge substrate for discharging liquid, the flexible printed circuit board comprising: a film whose length in the longitudinal direction is greater than the length in a direction orthogonal to the longitudinal direction; a plurality of connection terminals, arranged in a first area of the film adjacent to one side of the film in the longitudinal direction, for electrical connection to the liquid discharge substrate; a contact portion disposed in a second area of the film adjacent to the other side thereof in the longitudinal direction, the contact portion including a plurality of contact pads for electrical connection to the outside; and a plurality of wiring lines, arranged in the film, for electrical connection between the connection terminals and the contact pads, wherein the length of the second area of the film in the direction orthogonal to the longitudinal direction is more than two times the length of the first area thereof in that direction, and wherein one end of the first area in the direction orthogonal to the longitudinal direction and one end of the second area in that direction are in line with each other in the longitudinal direction.