Organic light-emitting diode display

Patent metadata

Field	Value
Publication number	US-9954200-B2
Application number	US-201615156232-A
Country	US
Kind code	B2
Filing date	May 16, 2016
Priority date	Jul 29, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

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;
a display unit located on the substrate and comprising a display area and a non-display area outside the display area;
a thin film encapsulation layer sealing the display unit;
a first voltage line disposed in the non-display area and arranged to correspond to one side of the display area, wherein the first voltage line comprises a first side facing the display area and a second side opposite to the first side, and a pair of first protrusions protruding from the second side;
a second voltage line disposed in the non-display area and surrounding at least three sides of the display area;
a metal layer separated from the first and second voltage lines and disposed between the pair of first protrusions; and
a dam surrounding the display area,
wherein the dam overlaps the first voltage line, the second voltage line and the metal layer, and
wherein the second voltage line comprises a pair of second end portions bent to at least partially surround outer sides of a pair of first end portions of the first voltage line and a pair of connectors in parallel to the pair of first protrusions and extending from the pair of second end portions.

2. The OLED display of claim 1 , wherein the dam comprises a first dam and a second dam spaced apart from each other,
wherein the first dam surrounds the display area, and
wherein the second dam surrounds the first dam.

3. The OLED display of claim 2 , wherein the second dam has a height greater than that of the first dam.

4. The OLED display of claim 1 , wherein the metal layer is electrically insulated from the second voltage line.

5. The OLED display of claim 4 , wherein the display unit comprises at least one thin film transistor (TFT), wherein the TFT comprises a source electrode and a drain electrode, and wherein the metal layer is formed on the same layer as the source and drain electrodes.

6. The OLED display of claim 4 , wherein the metal layer is located below the dam.

7. The OLED display of claim 1 , wherein the display unit comprises a thin film transistor (TFT), an OLED electrically connected to the TFT, and a planarization layer disposed between the TFT and the OLED, and wherein the dam is formed on the same layer as the planarization layer.

8. The OLED display of claim 7 , wherein the display unit further comprises a pixel-defining layer defining a pixel area, and wherein the dam comprises a first layer formed on the same layer as the planarization layer and a second layer formed on the same layer as the pixel-defining layer.

9. The OLED display of claim 8 , wherein the first layer and the second layer are integrally formed.

10. The OLED display of claim 1 , wherein the thin film encapsulation layer is formed of at least one inorganic layer and at least one organic layer, and wherein the at least one organic layer is located inside the dam.

11. The OLED display of claim 1 , wherein the dam contacts the second voltage line outside of the remaining sides of the display area, and wherein a portion of the dam has a straight line shape and contacts the pair of second end portions, the pair of first protrusions, and the metal layer.

12. The OLED display of claim 1 , wherein the display unit further comprises a pad unit configured to apply an electrical signal to the display area, wherein the pad unit is disposed in the non-display area, and wherein the pair of first protrusions and the pair of connectors are connected to the pad unit.

13. The OLED display of claim 7 , wherein the TFT comprises an active layer, a gate electrode, a source electrode, and a drain electrode,
wherein the gate insulating layer is disposed between the active layer and the gate electrode,
wherein the interlayer insulating layer is disposed between the gate electrode, the source electrode and the drain electrode, and
wherein the gate insulating layer and the interlayer insulating layer extend from the display area to the non-display area, and wherein the thin film encapsulation layer comprises at least one inorganic layer contacting the gate insulating layer or the interlayer insulating layer outside the dam.

14. The OLED display of claim 13 , wherein the at least one inorganic layer has a portion contacting a top surface of the substrate.

15. An organic light-emitting diode (OLED) display, comprising:
a display unit comprising a display area and a non-display area surrounding the display area;
a voltage line comprising a first voltage line and a second voltage line, wherein the second voltage line is formed in the non-display area and surrounds at least a part of the display area;
a plurality of dams formed in the non-display area and surrounding the display area; and
a metal layer separated from the first and second voltage lines and located adjacent to the first voltage line, wherein the dams overlap the metal layer, the first voltage line and the second voltage line on a plan view,
wherein the first voltage line disposed in one side of the display area, wherein the first voltage line comprises a pair of first end portions and a pair of first connectors respectively connected to the pair of first end portions, wherein the metal layer is disposed between the pair of first connectors, and wherein the dams overlap the first connectors on the plan view.

16. The OLED display of claim 15 , wherein the metal layer is electrically insulated from the second voltage line.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Deukjong
• Lee Sunyoul

Classifications

• H01L27/124

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L29/78675

  Electricity · mapped topic

• H01L27/1222

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic