When the display apparatus includes the seal 400 and is manufactured by using a method of cutting a panel in the present embodiment, the lower substrate 100, the seal 400, and the upper substrate 300 may be cut together along a cutting line CL in a manufacturing process. Accordingly, an edge 100E of the lower substrate 100, an edge 300E of the upper substrate 300, and an outer wall 400OE of the seal 400 may be aligned with one another, and may be on the same plane, for example, on the same vertical plane.

A first thermally conductive layer 80 may be located between the common power supply line 70 and the lower substrate 100. At least a part of the first thermally conductive layer 80 may overlap the first end portion 70E1 of the common power supply line 70. The first thermally conductive layer 80 may extend to the edge 100E of the lower substrate 100. Accordingly, an end surface 80E of an end portion of the first thermally conductive layer 80 may be exposed to the outside of the panel. As described above, the end surface 80E of the first thermally conductive layer 80 may be aligned with the edge 100E of the lower substrate 100, the edge 300E of the upper substrate 300, and the outer wall 400OE of the seal 400.