US-12628517-B2 - Organic light-emitting display 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.

Inventors

• Yoonsun CHOI
• Seong Ryong Lee
• Hyun Chul Kim
• Seongjun Lee
• Eunae JUNG

Assignees

• SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date

20260512

Application Date

20250407

Priority Date

20180504

Claims (19)

1. 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 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.
2. 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. 3 . The organic light-emitting display device of claim 2 , wherein the first lower power voltage line is spaced apart from the second lower power voltage line, and the first upper power voltage line is spaced apart from the second upper power voltage line.
4. 4 . The organic light-emitting display device of claim 3 , 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.
5. 5 . The organic light-emitting display device of claim 3 , 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.
6. 6 . The organic light-emitting display device of claim 1 , wherein the pixel array includes an organic light-emitting diode that includes a first electrode and a second electrode, wherein the second electrode of the organic light-emitting diode extends from the pixel area to the peripheral area and contacts the first upper power voltage line.
7. 7 . 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.
8. 8 . The organic light-emitting display device of claim 7 , wherein the fan-out wiring is disposed under the first power voltage wiring and the second power voltage wiring.
9. 9 . The organic light-emitting display device of claim 8 , 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.
10. 10 . The organic light-emitting display device of claim 7 , further comprising a touch screen structure disposed in the pixel area and the peripheral area to overlap the fan-out wiring.
11. 11 . The organic light-emitting display device of claim 7 , wherein the fan-out wiring is configured to transfer a data signal to the pixel array.
12. 12 . The organic light-emitting display device of claim 1 , 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.
13. 13 . The organic light-emitting display device of claim 1 , 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 the one or more contact holes of the first via insulation layer.
14. 14 . 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.
15. 15 . The organic light-emitting display device of claim 14 , wherein the thin film encapsulation layer includes at least one organic layer and at least one inorganic layer.
16. 16 . The organic light-emitting display device of claim 15 , further comprising at least one dam structure disposed in the peripheral area.
17. 17 . The organic light-emitting display device of claim 16 , further comprising at least one valley structure disposed between the at least one dam structure and the pixel area.
18. 18 . The organic light-emitting display device of claim 17 , wherein the pixel array includes an organic light-emitting diode that includes a first electrode and a second electrode, wherein the second 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.
19. 19 . The organic light-emitting display device of claim 17 , 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.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation of U.S. patent application Ser. No. 16/377,255, filed on Apr. 8, 2019, which claims priority to and the benefit of Korean Patent Application No. 10-2018-0052158 filed on May 4, 2018 in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties. BACKGROUND 1. Field Exemplary embodiments of the present disclosure relate to a display device, more particularly, to an organic light-emitting display device. 2. Description of the Related Art A flat panel display device has substituted a conventional display device such as a cathode-ray tube display device for its lightweight and relatively thinness. Examples of the flat panel display device include a liquid crystal display (LCD) device and an organic light-emitting display device. Recently, a flexible organic light-emitting display device has been researched and developed. The flexible organic light-emitting display device is capable of being bent or folded at least at a portion thereof. For example, the flexible organic light-emitting display device may include a flexible base substrate, a pixel array disposed on the base substrate, and a thin film encapsulation layer covering the pixel array. The flexible organic light-emitting display device may increase visibility and reduce an area size of a non-display area by bending or folding a portion thereof. SUMMARY Exemplary embodiments of the present disclosure provide an organic light-emitting display device. According to an exemplary embodiment, 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 that surrounds the pixel 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 the first lower power voltage line 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 the second lower power voltage line 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. In an exemplary embodiment, the second power voltage wiring is disposed between the first power voltage wiring and the pixel area. In an exemplary embodiment, the first lower power voltage line is spaced apart from the second lower power voltage line, and the first upper power voltage line is spaced apart from the second upper power voltage line. In an exemplary embodiment, 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. In an exemplary embodiment, 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. In an exemplary embodiment, the pixel array includes an organic light-emitting diode that includes a first electrode and a second electrode. The second electrode of the organic light-emitting diode extends from the pixel area to the peripheral area and contacts the first upper power voltage line. In an exemplary embodiment, the organic light-emitting display device further includes a fan-out wiring overlapping the first power voltage wiring and the second power voltage wiring. In an exemplary embodiment, the fan-out wiring is disposed under the first power voltage wiring and the second power voltage wiring. In an exemplary embodiment, the fan-out wiring includes a plurality of lines spaced apart from each other. 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. In an exemplary embodiment, the organic light-emitting display device further includes a touch screen structure disposed in the pixel area and the peripheral area to overlap the fan-out wiring. In an exemplary embodiment, the fan-out wiring is configured to transfer a data signal to the pixel array. In an exemplary embodiment, the organic light-emitting display device further includes a first via insulation layer partially covering the first lower power voltage line and the second lower power voltage line. In an exemplary embodiment, the first via insulation layer includes one or more contact holes. 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. In an exemplary embodim