The thin film encapsulation layer 300 may include at least one inorganic film 310 and at least one organic film 330. A first inorganic film 310a, an organic film 330, and a second inorganic film 310b may be alternately stacked and formed therein. The thin film encapsulation layer 300 may also be formed in the opening portion OP to completely protect the display unit 200 from the external moisture or oxygen. Further, the inorganic film 310 may have a larger area than the organic film 330. In this case, when the inorganic film 310 includes the first inorganic film 310a and the second inorganic film 310b, it may surround the organic film 330.

Next, referring to FIG. 4B, a touch electrode 410 may be formed over the thin film encapsulation layer 300, and a touch insulating film 430 may be formed over the thin film encapsulation layer 300 to cover the touch electrode 410.

The touch insulating film 430 may be an organic film formed of an organic material, or may be an inorganic film formed of an inorganic material. The touch insulating film 430 may be formed over the substrate 100, and may be stacked and formed in the opening portion OP. In one embodiment, the thin film encapsulation layer 300 and the touch insulating film 430 may be sequentially stacked and formed over the substrate 100 in the opening portion OP. In another embodiment, the touch insulating film 430 and the inorganic film 310 of the thin film encapsulation layer 300 may contact each other at an edge of the organic film 330 of the thin film encapsulation layer 300 in the opening portion OP.