Organic light emitting diode device and method for fabricating the same

Patent metadata

Field	Value
Publication number	US-9312319-B2
Application number	US-201314069589-A
Country	US
Kind code	B2
Filing date	Nov 1, 2013
Priority date	Dec 7, 2012
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

Disclosed are an organic light emitting diode device, and a method for fabricating the same. The organic light emitting diode device comprises a non-active area formed outside an active area of a substrate; a switching thin film transistor and a driving thin film transistor at each of the pixel regions; a planarization layer on the substrate; a first electrode on the planarization layer; a bank formed in the non-active area outside each pixel region; an organic light emitting layer on the first electrode; a second electrode on an entire surface of the substrate; a first passivation layer on the substrate; an organic layer on the first passivation layer; a second passivation layer on the organic layer and the first passivation layer; a barrier film disposed to face the substrate.

First claim

What is claimed is:

1. An organic light emitting diode device, comprising:
a substrate divided into:
an active area including a plurality of pixel regions; and
a non-active area formed outside the active area;

a switching thin film transistor and riving thin film transistor formed at each of the pixel regions on the substrate;
a planarization layer formed on the substrate including the switching thin film transistor and the driving thin film transistor, the planarization layer comprising a moisture blocking portion at the non-active area of the substrate, the moisture blocking portion comprising a same material as the planarization layer, the planarization layer being configured to absorb moisture in a direction up to the moisture blocking portion;
a first electrode formed on the planarization layer, and connected to a drain electrode of the driving thin film transistor;
a bank formed in the non-active area outside each pixel region of the substrate including the first electrode;
an organic light emitting layer formed on the first electrode, and provided for each pixel region in a separated manner; and
a second electrode formed on an entire surface of the substrate including the organic light emitting layer.

2. The organic light emitting diode device of claim 1 , wherein the moisture blocking portion is formed in at least one in number, along an edge region of the non-active area of the substrate.

3. The organic light emitting diode device of claim 1 , wherein the moisture blocking portion is formed at the planarization layer corresponding to driving circuit lines, in the non-active area of the substrate.

4. The organic light emitting diode device of claim 3 , wherein the moisture blocking portion is formed at the planarization layer positioned above a driving circuit line to which a direct current is applied, among the gate driving circuit lines.

5. The organic light emitting diode device of claim 1 , wherein an auxiliary electrode pattern, electrically connected to the first electrode, is formed on the planarization layer positioned in the non-active area of the substrate.

6. The organic light emitting diode device of claim 1 , wherein the substrate comprises one of: a glass substrate, a flexible glass substrate, and a plastic substrate.

7. The organic light emitting diode device of claim 1 , further comprising a first passivation layer completely covering the second electrode.

8. The organic light emitting diode device of claim 1 , further comprising:
an organic layer over the first passivation layer; and
a second passivation layer completely covering the organic layer.

9. The organic light emitting diode device of claim 1 , further comprising an auxiliary electrode pattern between and directly contacting the planarization layer and the second electrode.

10. The organic light emitting diode device of claim 1 , further comprising an auxiliary electrode pattern between and directly contacting the planarization layer and the second electrode.

11. An organic light emitting diode device, comprising:
a substrate divided into:
an active area including a plurality of pixel regions; and
a non-active area formed outside the active area;

a switching thin film transistor and a driving thin film transistor at each of the pixel regions on the substrate;
a planarization layer on the substrate including the switching thin film transistor and the driving thin film transistor, the planarization layer comprising a moisture blocking portion at the non-active area of the substrate, the moisture blocking portion of the planarization layer comprising a same material as the planarization layer, the planarization layer being configured to absorb moisture in a direction up to the moisture blocking portion the planarization layer in the active area of the substrate being separated from the planarization layer the non-active area of the substrate by the moisture blocking portion;
a first electrode on the planarization layer, and connected to a drain electrode of the driving thin film transistor;
a bank in the non-active area outside each pixel region of the substrate including the first electrode;
an organic light emitting layer on the first electrode, and provided for each pixel region in a separated manner; and
a second electrode on an entire surface of the substrate including the organic light emitting layer.

12. The organic light emitting diode device of claim 11 , wherein the moisture blocking portion is formed in at least one in number, along an edge region of the non-active area of the substrate.

13. The organic light emitting diode device of claim 11 , wherein the moisture blocking portion is formed at the planarization layer corresponding to driving circuit lines, in the non-active area of the substrate.

14. The organic light emitting diode device of claim 13 , wherein the moisture blocking portion is formed at the planarization layer positioned above a driving circuit line to which a direct current is applied, among the gate driving circuit lines.

15. The organic light emitting diode device of claim 11 , wherein an auxiliary electrode pattern, electrically connected to the first electrode, is formed on the planarization layer positioned in the non-active area of the substrate.

16. The organic light emitting diode device of claim 11 , wherein the substrate comprises one of: a glass substrate, a flexible glass substrate, and a plastic substrate.

17. The organic light emitting diode device of claim 11 , further comprising a first passivation layer completely covering the second electrode.

18. The organic light emitting diode device of claim 11 , further comprising:
an organic layer over the first passivation layer; and
a second passivation layer completely covering the organic layer.

Assignees

• Lg Display Co Ltd

Inventors

• Lee Jino
• Song Sangmoo
• Kim Jungchul
• Na Sehwan
• Kim Jiyun
• Hasumi Taro

Classifications

• H10K59/1315

  comprising structures specially adapted for lowering the resistance · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/1201 Primary

  Manufacture or treatment · CPC title

• H10D86/451

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