Organic light emitting diode display

Patent metadata

Field	Value
Publication number	US-10741627-B2
Application number	US-201715617842-A
Country	US
Kind code	B2
Filing date	Jun 8, 2017
Priority date	Aug 1, 2016
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

An organic light emitting diode (OLED) display includes a substrate, a thin film transistor on the substrate, an organic light emitting diode on the thin film transistor, and including a first electrode connected with the thin film transistor, and a black organic layer between the thin film transistor and the first electrode, and including a black protrusion spaced from the first electrode.

First claim

What is claimed is:

1. An organic light emitting diode (OLED) display comprising:
a substrate;
a thin film transistor on the substrate;
an organic light emitting diode on the thin film transistor, and including a first electrode connected with the thin film transistor; and
a black organic layer between the thin film transistor and the first electrode, and comprising a black protrusion spaced from the first electrode,
wherein the black protrusion protrudes from a surface of the black organic layer.

2. The OLED display of claim 1 , wherein a top of the black protrusion is farther from the substrate than a top of the first electrode.

3. The OLED display of claim 1 , further comprising a transparent pixel defining layer on the black organic layer, and defining an opening that overlaps at least a part of the first electrode.

4. The OLED display of claim 3 , wherein the transparent pixel defining layer covers the black protrusion.

5. The OLED display of claim 3 , wherein the organic light emitting diode further comprises:
an organic emission layer on the first electrode; and
a second electrode on the organic emission layer, and
wherein the transparent pixel defining layer comprises a side wall that contacts the organic emission layer and defines the opening.

6. The OLED display of claim 5 , wherein the black protrusion is spaced from the organic emission layer.

7. The OLED display of claim 5 , wherein the transparent pixel defining layer is between the black protrusion and the organic emission layer.

8. The OLED display of claim 1 , wherein the black protrusion surrounds the first electrode in a plan view.

9. The OLED display of claim 1 , wherein the black organic layer contacts a bottom side of the first electrode, and
wherein the first electrode contacts the thin film transistor through a hole in the black organic layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Jung Jin-Soo
• Lee Hyeok Jin
• Lee Jun Woo
• Jeon Baek Kyun

Classifications

• H10K50/11

  characterised by the electroluminescent [EL] layers · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K50/865 Primary

  comprising light absorbing layers, e.g. light-blocking layers · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title