Display device and method of manufacturing display device

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

• providing a substrate comprising a display area and a pad area;
• forming a pad electrode in the pad area on the substrate;
• forming, on the substrate and the pad electrode, a preliminary electrode layer comprising a stacked structure in which a first electrode layer having a first etching rate with respect to an etching process, a second electrode layer having a second etching rate with respect to the etching process that is higher than the first etching rate, and a third electrode layer having a third etching rate with respect to the etching process that is lower than the second etching rate and higher than the first etching rate are sequentially stacked;
• removing the second and third electrode layers located in a first portion of the display area except for the preliminary electrode layer located in a second portion of the display area through a first etching process;
• forming a lower electrode by removing the first electrode layer located in the first portion except for the preliminary electrode layer located in the second portion of the display area through a second etching process;
• forming a light emitting layer on the lower electrode;
• and
• forming an upper electrode on the light emitting layer.