Organic light-emitting display apparatus

Patent metadata

Field	Value
Publication number	US-11018317-B2
Application number	US-201916513075-A
Country	US
Kind code	B2
Filing date	Jul 16, 2019
Priority date	Feb 19, 2014
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

An organic light-emitting display apparatus includes a first substrate, a display unit defining an active area on the first substrate and including an insulating layer, a second substrate on the display unit, one or more signal lines outside the active area and on the insulating layer, and a sealant between the first substrate and the second substrate. The sealant bonds the first substrate and the second substrate, and covers at least a portion of the signal lines.

First claim

What is claimed is:

1. An organic light-emitting display apparatus comprising:
a first substrate;
a display unit on the first substrate, the display unit having an active area and comprising an organic light-emitting device and a thin film transistor in the active area, the organic light-emitting device comprising a first electrode, a second electrode, and an intermediate layer between the first electrode and the second electrode, the thin film transistor comprising an active layer, a gate electrode, a source electrode, and a drain electrode;
a second substrate on the display unit;
a cathode power line outside the active area; and
a sealant between the first substrate and the second substrate,
wherein a part of the sealant and a part of the cathode power line extend parallel to a first direction, the first direction being parallel to a first boundary of the first substrate, and
wherein the sealant directly contacts an outer edge portion of the cathode power line.

2. The organic light-emitting display apparatus of claim 1 , further comprising a metal layer between the second electrode and the cathode power line, wherein the metal layer electrically connects the second electrode and the cathode power line.

3. The organic light-emitting display apparatus of claim 2 , wherein the cathode power line is located between the sealant and the metal layer in a plan view.

4. The organic light-emitting display apparatus of claim 2 , wherein the metal layer comprises a same material as the first electrode.

5. The organic light-emitting display apparatus of claim 2 , further comprising an interlayer insulating layer between the gate electrode and the source and drain electrodes,
wherein the cathode power line is between the interlayer insulating layer and the second substrate.

6. The organic light-emitting display apparatus of claim 5 , further comprising a passivation layer on the interlayer insulating layer,
wherein the metal layer is on the passivation layer.

7. The organic light-emitting display apparatus of claim 6 , wherein the passivation layer physically contacts at least a portion of the cathode power line.

8. The organic light-emitting display apparatus of claim 6 , wherein the passivation layer covers an inner edge portion of the cathode power line between the cathode power line and the metal layer.

9. The organic light-emitting display apparatus of claim 1 , wherein the cathode power line comprises a same material as the source electrode and the drain electrode.

10. The organic light-emitting display apparatus of claim 1 , wherein the thin film transistor is electrically connected to the first electrode.

11. The organic light-emitting display apparatus of claim 2 , further comprising a pixel-defining layer covering the metal layer and having a contact hole,
wherein the second electrode is on the pixel-defining layer and contacts the metal layer through the contact hole.

12. The organic light-emitting display apparatus of claim 11 , wherein the pixel-defining layer is separated from the sealant.

13. The organic light-emitting display apparatus of claim 12 , wherein the pixel-defining layer covers at least a portion of the cathode power line exposed between the sealant and the metal layer.

14. The organic light-emitting display apparatus of claim 11 , wherein the pixel-defining layer has a hole, and
wherein the sealant covers at least a portion of the pixel-defining layer and contacts the cathode power line through the hole.

15. The organic light-emitting display apparatus of claim 1 , wherein the sealant covers the outer edge portion of the cathode power line.

16. The organic light-emitting display apparatus of claim 1 , wherein the sealant extends along the outer edge portion of the cathode power line.

Assignees

• Samsung Display Co Ltd

Inventors

• Hong Sang-Min
• Hwang Hyun-Min
• Kim Hyun-Young
• Na Eun-Jae

Classifications

• H10K59/124

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10K59/123

  Connection of the pixel electrodes to the thin film transistors [TFT] · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/8722 Primary

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title