Patent ID: 8672434

Claim:
A wiring connection structure of driver IC comprising: a first wiring substrate; a driver IC which is installed on the first wiring substrate and which has a plurality of input terminals and a plurality of output terminals; a plurality of output wires which are formed on the first wiring substrate and which are connected to the output terminals of the driver IC; a plurality of input wires which have connection terminals to be connected to the input terminals of the driver IC, respectively, and which include a first signal input wire and a second signal input wire through which a first signal and a second signal that is more susceptible to an influence of noise than the first signal are transmitted, respectively; and a plurality of bonding wires which connect the input terminals of the driver IC to the connection terminals of the input wires, respectively, which have an identical length to each other, and which includes a first bonding wire having a first loop height from the first wiring substrate and a second bonding wire having a second loop height higher than the first loop height; wherein intervals between the input terminals are narrower than intervals between the connection terminals of the input wires; wherein the first signal is transmitted through the first bonding wire; wherein the second signal is transmitted through the second bonding wire wherein the driver IC serves to drive a liquid jetting head which is configured to jet a liquid droplet from a plurality of nozzles formed therein; wherein the plurality of kinds of signal input wires include: a clock wire through which a clock signal is transmitted; a jetting-data wire through which a jetting data signal indicating a timing of jetting the liquid droplet from the nozzles is transmitted; and a drive-waveform wire trough which a drive waveform signal corresponding to a drive signal to be outputted from the output terminals of the driver IC to drive the liquid jetting head is transmitted; and wherein loop heights of the bonding wires which are connected to the connection terminals of the clock wire and the jetting-data wire are higher than a loop height of the bonding wire which is connected to the connection terminal of the drive-waveform wire.