Organic light-emitting disiplay device

Abstract

An organic light-emitting display device includes a base substrate, a pixel array, a first power voltage wiring and a second power voltage wiring. The base substrate includes a pixel area and a peripheral area. The pixel array is disposed in the pixel area. The first power voltage wiring is disposed in the peripheral area and includes a first lower power voltage line and a first upper power voltage line. The first upper power voltage line is disposed on and contacts the first lower power voltage line. The second power voltage wiring is disposed in the peripheral area and includes a second lower power voltage line and a second upper power voltage line. The second upper power voltage line is disposed on and contacts the second lower power voltage line. The first upper power voltage line overlaps the second lower power voltage line in a plan view.

What is claimed is: 
     
         1 . 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 comprising a plurality of pixels and disposed in the pixel area, each of the plurality of pixels includes an organic light-emitting diode;   a first power voltage wiring disposed in the peripheral area without extending into the pixel 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, contacts the first lower power voltage line, and extends along the peripheral area parallel to the first lower power voltage line in a first direction; and   a second power voltage wiring disposed in the peripheral area without extending into the pixel 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, contacts the second lower power voltage line, and extends along the peripheral area parallel to the second lower power voltage line in the first direction,   wherein the first power voltage wiring is electrically connected to each of the plurality of pixels via one or more signal wirings and provides a first voltage to an electrode of the organic light-emitting diode of each of the plurality of pixels, and the second power voltage wiring is electrically connected to each of the plurality of pixels via the one or more signal wirings and provides a second voltage that is different from the first voltage to a transistor of each of the plurality of pixels,   wherein the first upper power voltage line and the second lower power voltage line are disposed in different layers, and the first upper power voltage line has a shape that expands in a second direction toward the pixel area and overlaps the second lower power voltage line in a plan view,   wherein the first lower power voltage line, the first upper power voltage line, the second lower power voltage line, and the second upper power voltage line are spaced apart from the pixel area in a same direction,   wherein the first lower power voltage line is spaced apart from the second lower power voltage line in the second direction, and the first upper power voltage line is spaced apart from the second upper power voltage line in the second direction, and   wherein the first upper power voltage line covers a gap between the first lower power voltage line and the second lower power voltage line in a plan view.   
     
     
         2 . The organic light-emitting display device of  claim 1 , wherein the second power voltage wiring is disposed between the first power voltage wiring and the pixel area. 
     
     
         3 . The organic light-emitting display device of  claim 1 , wherein a width of the first upper power voltage line is greater than a width of the first lower power voltage line, and a width of the second upper power voltage line is smaller than a width of the second lower power voltage line. 
     
     
         4 . The organic light-emitting display device of  claim 1 , wherein the electrode of the organic light-emitting diode extends from the pixel area to the peripheral area and contacts the first upper power voltage line. 
     
     
         5 . The organic light-emitting display device of  claim 1 , further comprising a fan-out wiring overlapping the first power voltage wiring and the second power voltage wiring. 
     
     
         6 . The organic light-emitting display device of  claim 5 , wherein the fan-out wiring is disposed under the first power voltage wiring and the second power voltage wiring. 
     
     
         7 . The organic light-emitting display device of  claim 6 , wherein the fan-out wiring includes a plurality of lines spaced apart from each other, wherein at least a portion of the fan-out wiring overlaps a gap between the first lower power voltage line and the second lower power voltage line in a plan view. 
     
     
         8 . The organic light-emitting display device of  claim 5 , further comprising a touch screen structure disposed in the pixel area and the peripheral area to overlap the fan-out wiring. 
     
     
         9 . The organic light-emitting display device of  claim 5 , wherein the fan-out wiring is configured to transfer a data signal to the pixel array. 
     
     
         10 . The organic light-emitting display device of  claim 1 , further comprising a first via insulation layer partially covering the first lower power voltage line and the second lower power voltage line. 
     
     
         11 . The organic light-emitting display device of  claim 10 , wherein the first via insulation layer includes one or more contact holes, and the first upper power voltage line is connected to the first lower power voltage line through the one or more contact holes of the first via insulation layer. 
     
     
         12 . The organic light-emitting display device of  claim 10 , wherein the first via insulation layer includes one or more contact holes, and the second upper power voltage line is connected to the second lower power voltage line through one or more contact holes of the first via insulation layer. 
     
     
         13 . The organic light-emitting display device of  claim 1 , further comprising a thin film encapsulation layer covering the pixel array and extending to the peripheral area. 
     
     
         14 . The organic light-emitting display device of  claim 13 , wherein the thin film encapsulation layer includes at least one organic layer and at least one inorganic layer. 
     
     
         15 . The organic light-emitting display device of  claim 14 , further comprising at least one dam structure disposed in the peripheral area. 
     
     
         16 . The organic light-emitting display device of  claim 15 , further comprising at least one valley structure disposed between the at least one dam structure and the pixel area. 
     
     
         17 . The organic light-emitting display device of  claim 16 , wherein the electrode of the organic light-emitting diode is disposed in the pixel area and the peripheral area, extends along a side surface and an upper surface of the at least one valley structure in the peripheral area, and contacts the first upper power voltage line. 
     
     
         18 . The organic light-emitting display device of  claim 16 , wherein the at least one valley structure is disposed on the first upper power voltage line and is connected to a first via insulation layer that is disposed under the first upper power voltage line through a contact hole of the first upper power voltage line.