Organic light-emitting diode display

Patent metadata

Field	Value
Publication number	US-12507551-B2
Application number	US-202418444614-A
Country	US
Kind code	B2
Filing date	Feb 16, 2024
Priority date	Jul 29, 2015
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

An organic light-emitting diode display is disclosed. In one aspect, the display includes a display unit located on the substrate and including a display area and a non-display area surrounding the display area, and a thin film encapsulation layer sealing the display unit. The display also includes a voltage line formed in the non-display area and surrounding the display area, a metal layer formed of the same material as the voltage line, and a dam surrounding the display area and contacting the voltage line. The voltage line includes a first voltage line disposed in one side of the display area. The first voltage line includes a pair of first end portions and a pair of first connectors respectively connected to the pair of first end portions and extending away from the display area. The metal layer is disposed between the pair of first connectors. The dam contacts the metal layer.

First claim

What is claimed is:

1 . An organic light-emitting diode (OLED) display, comprising:
a substrate that comprises a display area and a non-display area; an OLED and a thin film transistor (TFT) disposed on the display area; a first voltage line disposed in the non-display area and adjacent to one side of the display area, wherein the first voltage line comprises a first region and second region, the first region comprises a first side that faces the display area and a second side opposite to the first side, and the second region comprises a third side that faces the display area and a fourth side opposite to the first side; a second voltage line disposed in the non-display area and comprising a portion that extends in a first direction, wherein the portion is adjacent to the second side of the first region of the first voltage line; and a dam disposed in the non-display area and that surrounds the display area, wherein the first region has a first width in a second direction that crosses the first direction and the second region has a second width in the second direction the first direction, and the second width is greater than the first width, and wherein the first voltage line has T-shape in a plan view, and the first region is a side part of the T-shape and the second region is a central part of the T-shape, and wherein the second direction is the direction in which a singular continuous leg of the T-shape extends and the dam overlaps the singular continuous leg in the first direction.

2 . The OLED display of claim 1 , wherein the dam overlaps a portion of the second voltage line and the second region of the first voltage line in the plan view.

3 . The OLED display of claim 1 , wherein the dam includes a first dam and a second dam that surrounds the first dam.

4 . The OLED display of claim 3 , wherein the second dam has a different height than the first dam.

5 . The OLED display of claim 3 , wherein the first dam has one layer, and the second dam includes two layers.

6 . The OLED display of claim 1 , further comprising a thin film encapsulation layer that covers the OLED,
wherein the thin film encapsulation layer includes at least one inorganic layer and at least one organic layer, and wherein the at least one organic layer is located inside the dam.

7 . The OLED display of claim 6 , wherein the at least one inorganic layer has a portion located outside the dam.

8 . The OLED display of claim 1 , further comprising a planarization layer disposed between the OLED and the TFT, wherein the planarization layer covers a side of the first voltage line.

9 . The OLED display of claim 8 , wherein the planarization layer that extends from the display area is spaced apart from the dam.

10 . The OLED display of claim 9 , wherein the dam is provided in the same layer as the planarization layer.

11 . The OLED display of claim 1 , wherein the OLED includes a light emitting layer between a lower electrode and an upper electrode on the substrate.

12 . The OLED display of claim 1 , further comprising a pixel defining layer disposed on the substrate, wherein the pixel defining layer partially exposes a lower electrode, wherein the dam is provided in the same layer as the pixel-defining layer.

13 . The OLED display of claim 1 , wherein the portion of the second voltage line is disposed outside the first region of the first voltage line.

14 . The OLED display of claim 1 , wherein the second voltage line comprises a fifth side that faces the second side of the first voltage line and a sixth side opposite to the fifth side.

15 . The OLED display of claim 14 , wherein the dam covers the sixth side of the second voltage line.

16 . The OLED display of claim 1 , wherein the dam includes two layers.

17 . An electronic device, comprising:
a substrate that comprises a display area and a non-display area; an OLED and a thin film transistor (TFT) disposed on the display area; a first voltage line disposed in the non-display area and adjacent to one side of the display area, wherein the first voltage line comprises a first region and second region, the first region comprises a first side that faces the display area and a second side opposite to the first side, and the second region comprises a third side that faces the display area and a fourth side opposite to the first side; a second voltage line disposed in the non-display area and comprising a portion that extends in a first direction, wherein the portion is adjacent to the second side of the first region of the first voltage line; and a dam disposed in the non-display area and that surrounds the display area, wherein the first region and the second region each have a first width and a second width in a second direction that crosses the first direction, and the second width is greater than the first width, wherein the first voltage line has a T-shape in a plan view, and the first region is a side part of the T-shape and the second region is a central part of the T-shape being the second region, and wherein the second direction is the direction in which a singular continuous leg of the T-shape extends and the dam overlaps the singular continuous leg in the first direction.

18 . The electronic device of claim 17 , wherein the dam overlaps a portion of the second voltage line and the second region of the first voltage line in the plan view.

19 . The electronic device of claim 17 , further comprising a thin film encapsulation layer that covers the OLED,
wherein the thin film encapsulation layer includes at least one inorganic layer and at least one organic layer, and wherein the at least one organic layer is located inside the dam.

20 . The electronic device of claim 17 , further comprising a planarization layer disposed between the OLED and the TFT, wherein the planarization layer covers a side of the first voltage line.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Deukjong
• Lee Sunyoul

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/421

  having a particular composition, shape or crystalline structure of the active layer · CPC title