Organic light emitting diode display device

Patent metadata

Field	Value
Publication number	US-9153631-B2
Application number	US-201414310243-A
Country	US
Kind code	B2
Filing date	Jun 20, 2014
Priority date	Jun 26, 2013
Publication date	Oct 6, 2015
Grant date	Oct 6, 2015

Abstract

The present invention provides an organic light emitting diode display device comprising a substrate comprising a display region and a non-display region, a thin film transistor formed in the display region; an organic light emitting layer connected to the thin film transistor, a bank formed to define a light emitting region of the organic light emitting layer, a metal pattern disposed in the non-display region and not covered with the bank; and a conductive pattern connected to the organic light emitting layer while covering the metal pattern and partially physically separated on the metal pattern.

First claim

What is claimed is:

1. An organic light emitting diode display device comprising:
a substrate comprising a display region and a non-display region;
a thin film transistor in the display region;
an organic light emitting layer connected to the thin film transistor;
a bank to define a light emitting region of the organic light emitting layer;
a metal pattern disposed in the non-display region, more than half of the metal pattern not covered with the bank;
a first conductive pattern in the display region and the non-display region, at least a portion of the first conductive pattern to extend laterally underneath the bank layer, the first conductive pattern connected to the organic light emitting layer and a top surface of the metal pattern;
a second conductive pattern in the non-display region, the second conductive pattern connected to the top surface of the metal pattern and physically separated from the first conductive pattern along the top surface of the metal pattern by an opening filled with a passivation film,
an anode under the organic light emitting layer in the display region; and
a cathode above the organic light emitting layer in the display region, the cathode electrically connected to the first conductive pattern.

2. The organic light emitting diode display device of claim 1 , wherein the metal pattern is a ground line that is formed in the non-display region along the outer periphery of the display region.

3. The organic light emitting diode display device of claim 1 , wherein the metal pattern comprises:
a first metal pattern made of a gate metal comprising a gate electrode of the thin film transistor; and
a second metal pattern made of a source metal comprising a source electrode of the thin film transistor.

4. The organic light emitting diode display device of claim 3 , wherein the first metal pattern and the second metal pattern are electrically connected to each other.

5. The organic light emitting diode display device of claim 1 , wherein the second conductive pattern comprises a plurality of parts physically separated from each other.

6. The organic light emitting diode display device of claim 5 , wherein the plurality of parts are in the shape of islands or stripes.

7. The organic light emitting diode display device of claim 1 , wherein the second conductive pattern comprises a plurality of openings that expose the metal pattern, the openings filled with the passivation film.

8. An organic light emitting diode display device comprising:
a substrate comprising a display region and a non-display region;
a thin film transistor in the display region;
an organic light emitting layer connected to the thin film transistor;
a bank to define a light emitting region of the organic light emitting layer;
a metal pattern disposed in the non-display region and not covered with the bank;
a first conductive pattern connected to the organic light emitting layer and the metal pattern;
a second conductive pattern connected to the metal pattern and physically separated from the first conductive pattern,
an anode under the organic light emitting layer; and
a cathode above the organic light emitting layer, the cathode connected to the first conductive pattern,
wherein the first and second conductive patterns are made of the same material layer as the anode and has a same stack structure as the anode.

9. An organic light emitting diode (OLED) device comprising:
a substrate comprising a display region and a non-display region;
a thin film transistor;
an anode disposed in the display region and connected to the thin film transistor;
an organic light emitting layer disposed on the anode in the display region;
a cathode disposed on the organic light emitting layer in the display region;
a bank disposed in the display region and separating the organic light emitting layer from the non-display region;
a ground line disposed in the non-display region, more than half of the ground line not covered with the bank;
a first conductive pattern in the display region and the non-display region, the first conductive pattern connected to the bank, the cathode, and a top surface of the ground line; and
a second conductive pattern disposed in the non-display region and connected to the top surface of the ground line, the second conductive pattern physically separated from the first conductive pattern along the top surface of the ground line by an opening filled with a passivation film.

10. The OLED device of claim 9 , wherein the first conductive pattern and the second conductive pattern are formed of a same material or same materials.

11. The OLED device of claim 9 , wherein the first conductive pattern and the second conductive pattern are formed in a tri-layer structure.

12. The OLED device of claim 9 , wherein the anode, first conductive pattern, and second conductive pattern are formed of a same material or materials.

13. The OLED device of claim 9 ,
wherein the second conductive pattern comprises a plurality of openings that expose the ground line, the openings filled with the passivation film.

14. The OLED device of claim 9 , wherein the ground line comprises:
a gate ground line made of a same material as a gate electrode of the thin film transistor; and
a source ground line made of a same material as a source electrode of the thin film transistor.

15. The OLED device of claim 9 , wherein the second conductive pattern comprises a plurality of physically separated parts, each of the parts connected to the ground line.

16. The OLED device of claim 15 , wherein the plurality of parts are separated by the passivation film.

17. An organic light emitting diode (OLED) device comprising:
a substrate comprising a display region and a non-display region;
a thin film transistor;
an anode disposed in the display region and connected to the thin film transistor;
an organic light emitting layer disposed on the anode in the display region;
a cathode disposed on the organic light emitting layer in the display region;
a bank disposed in the display region and separating the organic light emitting layer from the non-display region;
a ground line disposed in the non-display region;
a first conductive pattern connected to the bank, the cathode, and the ground line; and
a second conductive pattern disposed in the non-display region and connected to the ground line, the second conductive pattern physically separated from the first conductive pattern,
wherein the first conductive pattern and the second conductive pattern are formed with a layer of Silver alloy between two layers of Indium Tin Oxide.

18. The OLED device of claim 17 , wherein the ground line comprises:
a gate ground line made of a same material as a gate electrode of the thin film transistor; and
a source ground line made of a same material as a source electrode of the thin film transistor.

19. The OLED device of claim 17 , wherein the second conductive pattern comprises a plurality of parts physically separated from each other and the plurality of parts are in the shape of islands or stripes.

20. The OLED device of claim 17 , wherein the second conductive pattern comprises a plurality of openings that expose the ground line, the openings filled with a passivation film.

Assignees

• Lg Display Co Ltd

Inventors

• Sung Kiyoung
• Kim Sangsoo
• Shin Sang-Il

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/8722

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

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/131 Primary

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