The driving power supply line 60 may be located in the peripheral area PA. For example, the driving power supply line 60 may be located between the terminal unit 40 and a portion of the display unit 10 adjacent to the terminal unit 40. The driving power ELVDD supplied through the connection wiring 61 connected to the terminal 41 may be supplied to each pixel P through the driving voltage line PL.

The common power supply line 70 may be located in the peripheral area PA and may partially surround the display unit 10. For example, the common power supply line 70 may have a loop shape. A side of the loop shape adjacent to the terminal unit 40 may be open and may extend along edges of the lower substrate 100 excluding the terminal unit 40.

The common power supply line 70 may be electrically connected to the connection wiring 71 connected to the terminal 45. The common power supply line 70 may supply the common power ELVSS to a common electrode (e.g., a cathode) of the OLED of the pixel P. In FIG. 1, the connection wiring 71 is shown as contacting an end portion and an other end portion of the common power supply line 70. In some implementations, the connection wiring 71 may have a loop shape that partially surrounds the display unit 10 and has an open side. When the connection wiring 71 contacts the end portion and the other end portion of the common power supply line 70 and when the connection wiring 71 partially surrounds the display unit 10, the connection wiring 71 may extend beyond the common power supply line 70 toward an end portion of the lower substrate 100, for example, toward the terminal unit 40.