Patent ID: 8373262

Claim:
A source driver of a film package type, comprising: a film substrate; a semiconductor chip provided on a surface of the film substrate, the semiconductor chip having a plurality of terminals each of which is connectable to an external member, the plurality of terminals including first terminals for receiving an electric signal, second terminals for outputting an electric signal, and third terminals; first wiring lines provided on the surface of the film substrate, the first wiring lines being connected to the first terminals, respectively; second wiring lines provided on the surface of the film substrate, the second wiring lines being connected to the second terminals, respectively; and sprocket portions provided at opposite sides of the film substrate, respectively, each of the sprocket portions having a metal portion on the film substrate, and a string of holes, each of the first wiring lines being provided such that one end of each of the first wiring lines is connected to the first terminal, and the other end of each of the first wiring lines extends to a side where no sprocket portion is provided, each of the second wiring lines being provided such that one end of each of the second wiring lines is connected to the second terminal, and the other end of each of the second wiring lines extends to a side opposite to said side to which the other end of each of the first wiring lines extends, the source driver further comprising: third wiring lines for connecting the third terminals, each of which is connected to neither any one of the first wiring lines nor any one of the second wiring lines, to the metal portions of the sprocket portions, respectively, the third wiring lines being provided on the surface of the film substrate.