FIG. 6 illustrates a plan view of a portion of a display apparatus 1A according to an embodiment. FIG. 7 illustrates a plan view of a part of a display apparatus 1B according to an embodiment. FIGS. 6 and 7 illustrate plan views of a structure of the first thermally conductive layer 80 overlapping the first end portion 70E1 of the common power supply line 70.

Referring to FIG. 6, at least a part of the first thermally conductive layer 80 may overlap the common power supply line 70. The first connection layer 82 may be located between the first thermally conductive layer 80 and the common power supply line 70. The end surface 80E of the first thermally conductive layer 80 may be aligned with the edge 100E of the lower substrate 100 and may be exposed to the outside, as shown in FIG. 3.

In FIG. 6, a left portion of the common power supply line 70 and a right portion of the first thermally conductive layer 80 may overlap each other. The first connection layer 82 may be located in overlapping portions of the common power supply line 70 and the first thermally conductive layer 80. The first connection layer 82 may be connected to the common power supply line 70 and the first thermally conductive layer 80 through a contact hole CH.