As described above with reference to FIG. 5, when the second insulating layer 150 having the aforementioned preset shape is formed and then air is sprayed using an air gun or the like, a portion of the second insulating layer 150 may be chipped off. However, in the display apparatus according to the exemplary embodiment of FIG. 8, as described above, the second distance d2 between the first end EP1 and the second end EP2 covering the second portion P2 of the electrode power supply line VSS 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. Accordingly, a length of the second end EP2 of the second insulating layer 150 that covers the second portion P2 of the electrode power supply line VSS is increased, and thus, adhesion between an area near the second end EP2 of the second insulating layer 150 and the electrode power supply line VSS may be improved. For example, the second value d22 that is greater than the first value d21 and covers the first portion P1 of the electrode power supply line VSS is set to be greater than the first distance d1 between the first end EP1 and the second end EP2. Therefore, the portion of the second insulating layer 150 may be efficiently prevented from being chipped off during air spraying. The first value d21 that is less than the second value d22 may be equal to the first distance d1 between the first end EP1 and the second end EP2 covering the first portion P1 of the electrode power supply line VSS.