Referring to FIG. 4, a process of curing the seal 400 may be performed in the peripheral area PA of the display apparatus by emitting laser energy L after the lower substrate 100 has been adhered to the upper substrate 300. A display panel may be formed by simultaneously cutting the upper substrate 300, the seal 400, the lower substrate 100, and the first thermally conductive layer 80 along the cutting line CL.

In FIG. 4, the laser energy L is emitted from the upper substrate 300 toward the seal 400. The laser energy L provides high temperature heat H. The heat H transferred to cure the seal 400 may be transferred to the common power supply line 70, which is a conductive layer that is in surface contact with the seal 400.

In the present embodiment, the heat H transferred to the common power supply line 70 may be transferred to the first thermally conductive layer 80 connected to the common power supply line 70 through the first connection layer 82. The heat H may be diffused to the outside of the panel along the first thermally conductive layer 80. Accordingly, in the display apparatus according to an embodiment, a dead area may be reduced by locating the seal 400, the common power supply line 70, and the first light-emitting driving circuit 30 to overlap each other. Deterioration of the first light-emitting driving circuit 30 in a process of curing of the seal 400 may be prevented or reduced by providing the first thermally conductive layer 80 having a heat dissipation structure.

FIG. 5 illustrates a cross-sectional view of a display apparatus 2 according to an embodiment.