Organic light emitting diode display device

Patent metadata

Field	Value
Publication number	US-10069112-B2
Application number	US-201615175668-A
Country	US
Kind code	B2
Filing date	Jun 7, 2016
Priority date	Jun 19, 2015
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

An organic light emitting diode display device, including a substrate, and at least one organic light emitting diode on the substrate, wherein the organic light emitting diode includes a first electrode on the substrate, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer, and the organic light emitting layer has at least one opening.

First claim

What is claimed is:

1. An organic light emitting diode display device, comprising:
a substrate; and
at least one organic light emitting diode on the substrate,
wherein the organic light emitting diode comprises:
a first electrode on the substrate;
an organic light emitting layer on the first electrode; and
a second electrode on the organic light emitting layer, wherein:
the organic light emitting layer has at least one opening, and
the opening is positioned on the first electrode.

2. The organic light emitting diode display device of claim 1 , wherein the opening has at least one of a slit shape, a circular shape, a polygonal shape, and a cross (+) shape when viewed from a plan view.

3. The organic light emitting diode display device of claim 1 , further comprising a low-refractive-index portion filled in the opening, the low-refractive-index portion having a refractive index lower than the organic light emitting layer.

4. The organic light emitting diode display device of claim 3 , wherein the low-refractive-index portion has a refractive index in a range of about 1.0 to about 1.4.

5. The organic light emitting diode display device of claim 3 , wherein a difference between refractive indices of the organic light emitting layer and the low-refractive-index portion is about 0.1 or more.

6. The organic light emitting diode display device of claim 3 , wherein the low-refractive-index portion comprises at least one of an inert gas, CaF 2 , NaF, Na 3 AlF 6 , SiO x , AlF 3 , LiF, MgF 2 , and Alq 3 (Tris(8-hydroxyquinolinato)aluminum), an acrylic resin, a polyimide resin, and a polyamide resin.

7. The organic light emitting diode display device of claim 3 , wherein the low-refractive-index portion comprises light-scattering particles.

8. The organic light emitting diode display device of claim 1 , wherein the second electrode comprises an opening having a shape substantially the same as the opening of the organic light emitting layer.

9. The organic light emitting diode display device of claim 1 , wherein the second electrode extends onto the opening of the organic light emitting layer.

10. The organic light emitting diode display device of claim 1 , wherein the first electrode is a pixel electrode.

11. The organic light emitting diode display device of claim 1 , further comprising, between the first electrode and the organic light emitting layer, at least one of a hole injection layer and a hole transporting layer.

12. The organic light emitting diode display device of claim 1 , further comprising, between the organic light emitting layer and the second electrode, at least one of an electron transporting layer and an electron injection layer.

Assignees

• Samsung Display Co Ltd
• Industry Academic Cooperation Foundation Kyunghee Univ

Inventors

• Lee Hyesog
• Kim Jungho
• Kwon Jaejoong
• Yang Byungchoon
• Cho Chio

Classifications

• G03F7/20

  Exposure; Apparatus therefor (photographic printing apparatus for making copies G03B27/00) · CPC title

• G03F7/094

  Multilayer resist systems, e.g. planarising layers · CPC title

• G03F7/426

  containing organic halogen compounds; containing organic sulfonic acids or salts thereof; containing sulfoxides · CPC title

• G03F7/32

  Liquid compositions therefor, e.g. developers · CPC title

• H01L51/56

  Electricity · mapped topic