However, the present disclosure is not limited thereto. For example, in an exemplary embodiment, the second distance d2 alternates between the first value d21 and the second value d22 that are different from each other along the second portion P2 of the electrode power supply line VSS in the center direction of the substrate 100, as illustrated in FIG. 8. The first distance d1 also alternates between a third value and a fourth value that are different from each other along the first portion P1 of the electrode power supply line VSS in the center direction of the substrate 100. In this regard, the third value may be equal to the first value d21, and the fourth value may be equal to the second value d22.

As illustrated in FIG. 8, the first insulating layer 140 and the second insulating layer 150 are arranged in an area outside of the electrode power supply line VSS. In this regard, a third distance d3 between the end of the first insulating layer 140 and the end of the second insulating layer 150 may be defined outside of the electrode power supply line VSS, and the third distance d3 may be equal to the aforementioned first distance d1. This is because a direction (the ?x direction) in which the end of the second insulating layer 150 extends outside of the electrode power supply line VSS, e.g., on the power supply line VDD, is equal to a direction (the ?x direction) in which the second end EP2 of the second insulating layer 150 extends on the electrode power supply line VSS.