Organic light emitting diode display device

Patent metadata

Field	Value
Publication number	US-2018102499-A1
Application number	US-201715730847-A
Country	US
Kind code	A1
Filing date	Oct 12, 2017
Priority date	Oct 12, 2016
Publication date	Apr 12, 2018
Grant date	—

Abstract

An organic light emitting diode display device includes an auxiliary electrode spaced apart from a plurality of first electrodes on a substrate. A first light emitting portion is on the first electrode. A charge generation layer is on the first light emitting portion. A second light emitting portion is on the charge generation layer. A second electrode is on the second light emitting portion and is electrically connected to the auxiliary electrode. The second electrode is insulated from the charge generation layer.

First claim

What is claimed is:

1 . An organic light emitting diode display device, comprising:
a substrate; a plurality of first electrodes on the substrate; an auxiliary electrode on the substrate and spaced apart from the first electrodes; a first light emitting portion on the first electrode; a first charge generation layer on the first light emitting portion; a second light emitting portion on the first charge generation layer; and a second electrode on the second light emitting portion and electrically connected to the auxiliary electrode, wherein the second electrode is insulated from the first charge generation layer.

2 . The display device as claimed in claim 1 , wherein the first charge generation layer does not contact the second electrode.

3 . The display device as claimed in claim 1 , wherein the auxiliary electrode is between at least two of the first electrodes.

4 . The display device as claimed in claim 1 , wherein the first electrodes and the auxiliary electrode are on a same layer.

5 . The display device as claimed in claim 1 , wherein the first electrodes and the auxiliary electrode include a same material.

6 . The display device as claimed in claim 1 , further comprising:
a pixel defining layer between at least two of the first electrodes, wherein the pixel defining layer has a first opening exposing at least a portion of the auxiliary electrode and wherein the first charge generation layer has a second opening overlapping the first opening.

7 . The display device as claimed in claim 6 , wherein the second electrode contacts the auxiliary electrode at the first opening.

8 . The display device as claimed in claim 6 , wherein the first opening has a circular shape, a linear shape, or a lattice shape on a plane.

9 . The display device as claimed in claim 6 , wherein the second opening has a circular shape, a linear shape, or a lattice shape on a plane.

10 . The display device as claimed in claim 1 , further comprising:
at least one of a hole injection layer and a hole transport layer between the first electrodes and the first light emitting portion.

11 . The display device as claimed in claim 1 , further comprising:
at least one of an electron transport layer and an electron injection layer between the second light emitting portion and the second electrode.

12 . The display device as claimed in claim 1 , further comprising:
a third light emitting portion between the second light emitting portion and the second electrode.

13 . The display device as claimed in claim 12 , further comprising:
a second charge generation layer between the second light emitting portion and the third light emitting portion.

14 . The display device as claimed in claim 13 , wherein each of the first charge generation layer and the second charge generation layer include at least one of an n-type layer and a p-type layer.

15 . The display device as claimed in claim 1 , further comprising:
a capping layer on the second electrode; and a thin film encapsulation layer on the capping layer and including:
at least one inorganic layer; and
at least one organic layer alternately arranged with the at least one inorganic layer.

16 . The display device as claimed in claim 1 , further comprising:
a capping layer on the second electrode; a filler on the capping layer; and an encapsulation substrate on the filler.

17 . An apparatus, comprising:
an organic light emitting diode (OLED); and an auxiliary electrode adjacent to the OLED, wherein the OLED includes a charge generation layer between a first electrode and a second electrode and wherein the second electrode is electrically connected to the auxililary electrode.

18 . The apparatus as claimed in claim 17 , wherein the OLED includes:
a first light emitting portion; and a second light emitting portion, wherein the charge generation layer is between the first and second light emitting portions.

19 . The apparatus as claimed in claim 18 , wherein the second electrode is insulated from the charge generation layer.

20 . The apparatus as claimed in claim 17 , wherein the charge generation layer includes an n-type layer and a p-type layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Pyo Sangwoo
• Oh Ilsoo
• Yoon Jihwan
• Lee Changmin
• Choi Sungjin

Classifications

• H10K59/8722

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

• H10K59/8731

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

• H10K50/131 Primary

  with spacer layers between the electroluminescent layers · CPC title

• H10K59/80522 Primary

  combined with auxiliary electrodes · CPC title

• H01L51/5275

  Electricity · mapped topic