Method for fabricating display device, display device and electronic device including the same

A display device comprising:

• a first area, which is a light-transmitting area, and a second area surrounding the first area and which displays images;
• a substrate;
• and
• a display layer, which is arranged on the substrate and defines therein a through-hole exposing a portion of an upper surface of the substrate in the first area,
• wherein the through-hole penetrates the display layer, and
• wherein the portion of the upper surface of the substrate exposed by the through-hole comprises a concave portion.

An electronic device comprising:

• a display device;
• a processor, which provides a signal to the display device;
• and
• a memory, which stores data used for operations of the processor and the display device,
• wherein the display device comprises:
• a first area, which is a light-transmitting area, and a second area surrounding the first area and which displays images;
• a substrate;
• and
• a display layer, which is arranged on the substrate and defines therein a through-hole exposing a portion of an upper surface of the substrate in the first area,
• wherein the through-hole penetrates the display layer, and
• wherein the portion of the upper surface of the substrate exposed by the through-hole comprises a concave portion.