Display device and method of manufacturing the same

A method of manufacturing a display device, the method comprising:

• preparing a substrate including a pixel area and a transmission area;
• forming a plurality of insulating layers in the pixel area and in the transmission area;
• forming a pixel electrode on the plurality of insulating layers in the pixel area;
• forming a pixel-defining layer on the pixel electrode, wherein the pixel-defining layer exposes at least part of the pixel electrode;
• forming a metal layer on:
• the pixel-defining layer in the pixel area,
• the at least part of the pixel electrode exposed by the pixel-defining layer in the pixel area, and
• the plurality of insulating layers in the transmission area;
• removing the metal layer on the plurality of insulating layers in the transmission area;
• removing the plurality of insulating layers in the transmission area;
• and
• removing the metal layer on:
• the pixel-defining layer in the pixel area;
• and
• the at least part of the pixel electrode exposed by the pixel-defining layer in the pixel area.