FIG. 1 illustrates that the power supply lines VDD (in a ?y direction) are connected to one another at ends of the power supply lines VDD, and the electrode power supply line VSS extends along the first edge E1, the third edge E3, and the second edge E2 of the substrate 100. In this regard, an end of the electrode power supply line VSS may function as a pad disposed on the substrate 100 that may be electrically connected to a component. With respect to the power supply lines VDD, an end of connections between the power supply lines VDD may function as a pad disposed on the substrate 100 that may be electrically connected to a component. In an exemplary embodiment, the pad area to which various electrical elements including an IC or a PCB are electrically connected may be arranged near the fourth edge E4 of the substrate 100.
