Organic light-emitting diode display

Patent metadata

Field	Value
Publication number	US-10468628-B2
Application number	US-201815920341-A
Country	US
Kind code	B2
Filing date	Mar 13, 2018
Priority date	Jul 29, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

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 display unit comprising a display area and a non-display area surrounding the display area;
an OLED and a thin film transistor (TFT) disposed on the display area;
a planarization layer disposed between the OLED and the TFT;
a first voltage line 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 protrusion 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; and
a. dam surrounding the display area, wherein the dam overlaps the protrusion and the second voltage line on a plan view,
wherein the planarization layer covers the first side of the first voltage line;
wherein the planarization layer extending from the display area is spaced apart from the dam.

2. The OLED display of claim 1 ,
wherein the dam comprises a plurality of dams, and
wherein the protrusion extends to an outermost dam.

3. 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.

4. The OLED display of claim 1 , 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 protrusion and extending from the pair of second end portions.

5. The OLED display of claim 4 , 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 protrusion and the pair of connectors is connected to the pad unit.

6. The OLED display of claim 4 , wherein a portion of the dam has a straight line shape and contacts the pair of second end portions of the second voltage line and the protrusion of the first voltage line.

7. The OLED display of claim 4 , wherein a portion of the dam has a straight line shape and contacts the pair of second end portions of the second voltage line and the protrusion of the first voltage line.

8. The MID 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 the second dam surrounds the first dam,
wherein the second dam has a height greater than that of the first dam.

9. The OLED display of claim 1 ,
wherein the TFT comprises a source electrode and a drain electrode, and
wherein the first voltage line is formed on the same layer as the source and drain electrodes.

10. The OLED display of claim 1 ,
wherein the dam includes a same layer as the planarization layer.

11. The OLED display of claim 10 ,
wherein the display unit further includes 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.

12. 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.

13. The OLED display of claim 12 , wherein the at least one inorganic layer has a portion locating outside the dam.

14. The OLED display of claim 1 ,
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 extending from the pair of second end portions, and
wherein a portion of the dam has a straight line shape and contacts the pair of second end portions of the second voltage line and the protrusion of the first voltage line.

15. 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 protrusion is connected to the pad unit.

16. The OLED display of claim 1 , wherein the display unit further comprises a fan out line extending the protrusion and a width of the fan out line is smaller than a width of the protrusion.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Deukjong
• Lee Sunyoul

Classifications

• H01L27/1248

  Electricity · mapped topic

• H01L51/5237

  Electricity · mapped topic

• H01L29/78678

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic

• H01L2251/558

  Electricity · mapped topic