Organic light emitting diode display having an insulating and a light blocking materials covering an inner circumferential surface of a transmissive hole

Patent metadata

Field	Value
Publication number	US-9728591-B2
Application number	US-201615003711-A
Country	US
Kind code	B2
Filing date	Jan 21, 2016
Priority date	Feb 9, 2015
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

An organic light emitting diode (OLED) display according to an exemplary embodiment includes: a substrate including a display area for displaying an image and a transmissive area around the display area; an insulating layer formed on the transmissive area of the substrate; and a pixel definition layer formed on the substrate and defining a pixel area within the display area. The pixel definition layer may cover an inner circumferential surface of a transmissive hole formed in the insulating layer.

First claim

What is claimed is:

1. An organic light emitting diode (OLED) display comprising:
a substrate including a display area for displaying an image and a transmissive area around the display area;
an insulating layer formed on the transmissive area of the substrate; and
a pixel definition layer formed on the substrate and defining a pixel area within the display area,
wherein the pixel definition layer covers an inner circumferential surface of a transmissive hole formed in the insulating layer, wherein the pixel definition layer includes an insulating material and a light blocking material.

2. The OLED display of claim 1 , wherein the insulating material includes at least either one of a polyamide and a resin based on polyacrylates, polyimides, or siloxanes.

3. The OLED display of claim 1 , wherein the light blocking material includes a black coloring agent.

4. The OLED display of claim 1 , wherein the substrate is a transparent substrate.

5. The OLED display of claim 1 , wherein a common electrode is positioned on the pixel definition layer within the transmissive area of the substrate.

6. The OLED display of claim 5 , wherein the common electrode is a transparent electrode.

7. The OLED display of claim 1 , further comprising an organic light emitting element positioned on the display area of the substrate.

8. The OLED display of claim 7 , further comprising a thin film transistor positioned between the substrate and the organic light emitting element and connected to the organic light emitting element.

9. The OLED display of claim 8 , wherein the thin film transistor includes:
an active layer positioned on the substrate;
a gate electrode positioned on the active layer; and
source and drain electrodes positioned on the gate electrode and connected to the active layer.

10. The OLED display of claim 9 , wherein the organic light emitting element includes:
a first electrode connected to the drain electrode of the thin film transistor;
an organic emission layer positioned on the first electrode; and
a second electrode positioned on the organic emission layer.

11. The OLED display of claim 10 , wherein the insulating layer includes:
a first insulating layer covering the source and drain electrodes; and
a second insulating layer formed on the first insulating layer, and
the pixel definition layer covers the second insulating layer and the first electrode.

12. The OLED display of claim 10 , wherein the insulating layer includes a first insulating layer that covers the source and drain electrodes, and
the pixel definition layer covers the first insulating layer and the first electrode.

Assignees

• Samsung Display Co Ltd

Inventors

• Yoon Joo Sun
• Ahn Ki Wan

Classifications

• H10K59/124

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H01L27/3246 Primary

  Electricity · mapped topic

• H01L51/5284

  Electricity · mapped topic

• H01L2251/5323

  Electricity · mapped topic

• H01L27/326

  Electricity · mapped topic