Organic light-emitting display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2016172425-A1
Application number	US-201514864383-A
Country	US
Kind code	A1
Filing date	Sep 24, 2015
Priority date	Dec 12, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

An organic light-emitting display device includes a first substrate including a first base layer, an element layer disposed on the first base layer and including a plurality of emission patterns, and a protection layer that is non-conductive, the protection layer covering the element layer, and a second substrate disposed on the first substrate, and the second substrate including a plurality of nanorods extending toward the first substrate, at least a portion of the nanorods penetrating the protection layer, the second substrate being electrically connected to the element layer through the nanorods penetrating the protection layer.

First claim

What is claimed is:

1 . An organic light-emitting display device, comprising:
a first substrate including a first base layer, an element layer disposed on the first base layer and including a plurality of emission patterns, and a protection layer that is non-conductive, the protection layer covering the element layer; and a second substrate disposed on the first substrate, and the second substrate including a plurality of nanorods extending toward the first substrate, at least a portion of the nanorods penetrating the protection layer, the second substrate being electrically connected to the element layer through the nanorods penetrating the protection layer.

2 . The organic light-emitting display device as claimed in claim 1 , wherein each of the nanorods has a diameter ranging from about 10 nm to about 120 nm.

3 . The organic light-emitting display device as claimed in claim 2 , wherein:
the first substrate is partitioned into a plurality of emission regions overlapping the emission patterns respectively, and a non-emission region adjacent to the emission regions, and the nanorods penetrating the protection layer are connected to the element layer at the non-emission region.

4 . The organic light-emitting display device as claimed in claim 3 , wherein the element layer includes:
a first electrode layer to receive a first power voltage; a pixel definition layer overlapping the non-emission region, and exposing portions of the first electrode layer, the portions overlapping the emission regions; an organic layer disposed on the first electrode layer, and including the emission patterns; and a second electrode layer disposed between the organic layer and the protection layer, and the second electrode layer to receive a second power voltage different from the first power voltage, wherein the nanorods penetrating the protection layer are directly connected to the second electrode layer.

5 . The organic light-emitting display device as claimed in claim 4 , wherein:
the second electrode layer includes a first portion overlapping the emission regions, and a second portion overlapping the non-emission region, and the nanorods penetrating the protection layer contact the second portion, and are spaced apart from the first portion.

6 . The organic light-emitting display device as claimed in claim 4 , wherein the second substrate further includes:
a second base layer including a first surface facing the first substrate, and a second surface opposed to the first surface; and a conductive layer disposed on the first surface to be connected to the nanorods, and overlapping the emission regions and the non-emission region, the conductive layer to receive the second power voltage through the nanorods penetrating the protection layer.

7 . The organic light-emitting display device as claimed in claim 6 , wherein the nanorods include a transparent conductive oxide.

8 . The organic light-emitting display device as claimed in claim 7 , wherein the conductive layer is formed of the same material as the nanorods.

9 . The organic light-emitting display device as claimed in claim 6 , wherein the second base layer is a glass substrate.

10 . The organic light-emitting display device as claimed in claim 6 , wherein the second substrate further includes a touch electrode layer that is disposed on the second surface to sense a touch event that occurs on the second surface.

11 . The organic light-emitting display device as claimed in claim 4 , further comprising:
a sealing member disposed between the first substrate and the second substrate to seal and couple the first substrate and the second substrate, the first substrate being partitioned into a pixel region including the emission regions, and a peripheral region surrounding the pixel region, the sealing member being disposed at the peripheral region; and a filler interposed between the first substrate and the second substrate that are sealed by the sealing member.

12 . The organic light-emitting display device as claimed in claim 11 , wherein the sealing member includes an inorganic material.

13 . The organic light-emitting display device as claimed in claim 11 , further including a power line to apply the second power voltage to the second electrode layer, the power line being disposed between the sealing member and the pixel region in a plan view.

14 . A method of manufacturing an organic light-emitting display device, the method comprising:
forming a first substrate on which a plurality of organic light-emitting diodes are disposed; forming a second substrate having a plurality of nanorods disposed at one side thereof; and coupling the first substrate and the second substrate so as to be electrically connected to each other through the plurality of nanorods.

15 . The method as claimed in claim 14 , wherein the forming of the second substrate includes:
providing a base substrate including a first surface that faces the one side, and a second surface that is opposed to the first surface; forming a first layer including a conductive material on the first surface; forming a second layer including a conductive material on the first layer; anodizing the second layer to form a plurality of nanostructures; patterning at least a portion of the first layer to form the nanorods; and removing the nanostructures.

16 . The method as claimed in claim 15 , wherein the first layer is patterned using the nanostructures as a mask.

17 . The method as claimed in claim 14 , wherein:
the forming of the first substrate includes:
forming the organic light-emitting diodes on the base substrate partitioned into a plurality of emission regions and a non-emission region adjacent to the emission regions such that the organic light-emitting diodes are respectively disposed on the emission regions; and
forming a protection layer covering the organic light-emitting diodes on the organic light-emitting diodes, wherein the protection layer is non-conductive, and
the plurality of nanorods penetrate the protection layer to be connected to the organic light-emitting diodes.

18 . The method as claimed in claim 17 , wherein:
each of the organic light-emitting diodes includes:
a first electrode disposed on the base substrate;
a light-emitting layer disposed on the first electrode and generating light; and
a second electrode disposed on the light-emitting layer, and overlapping the emission regions and the non-emission region, and
the nanorods penetrate the protection layer to be connected to the second electrode layer.

19 . The method as claimed in claim 18 , wherein the nanorods are connected to the second electrode at the non-emission region.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Hyunshik

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/8723

  Vertical spacers, e.g. arranged between the sealing arrangement and the OLED · CPC title

• H10K59/8722

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

• H10K59/871

  Self-supporting sealing arrangements · CPC title

• H10K59/80522 Primary

  combined with auxiliary electrodes · CPC title