Organic light-emitting display device

An organic light-emitting display device comprising:

• a base substrate including a pixel area and a peripheral area that surrounds the pixel area;
• a pixel array disposed in the pixel area;
• a first power voltage wiring disposed in the peripheral area and including a first lower power voltage line and a first upper power voltage line, wherein the first upper power voltage line is disposed on the first lower power voltage line and contacts the first lower power voltage line;
• a second power voltage wiring disposed in the peripheral area and including a second lower power voltage line and a second upper power voltage line, wherein the second upper power voltage line is disposed on the second lower power voltage line and contacts the second lower power voltage line;
• and
• a first via insulation layer partially disposed between the first upper power voltage line and the first lower power voltage line and between the second upper power voltage line and the second lower power voltage line so that the first lower power voltage line and the first upper power voltage line are formed in different layers and disposed on different planes, and the second lower power voltage line and the second upper power voltage line are disposed in different layers and disposed on different planes,
• wherein the first upper power voltage line overlaps the second lower power voltage line in a plan view.