Flexible organic electroluminescent device

Patent metadata

Field	Value
Publication number	US-9054059-B2
Application number	US-201314061924-A
Country	US
Kind code	B2
Filing date	Oct 24, 2013
Priority date	Oct 31, 2012
Publication date	Jun 9, 2015
Grant date	Jun 9, 2015

Abstract

The present invention relates to a flexible organic electroluminescent device, and the invention disclosed herein includes a switching thin film transistor and a drive thin film transistor formed at the each pixel region on a substrate; a first electrode connected to a drain electrode of the drive thin film transistor, and formed at the each pixel region; a bank formed on the display area and non-display area of the substrate; a spacer formed on a bank in the non-display area, and disposed in the vertical direction in parallel to a lateral surface of the display area; an organic light emitting layer separately formed for each pixel region; a second electrode formed on an entire surface of the organic light emitting layer; an organic layer formed on an entire surface of the substrate; a barrier film located to face the substrate.

First claim

What is claimed is:

1. A flexible organic electroluminescent device, comprising:
a substrate defined with a display area including a plurality of pixel regions and a non-display area at the outside thereof;
a switching thin film transistor and a drive thin film transistor at the each pixel region on the substrate;
a first electrode connected to a drain electrode of the drive thin film transistor, and being at the each pixel region;
a bank on the display area and non-display area of the substrate including the first electrode to insulate each pixel region;
spacers on a bank in the non-display area of the substrate, being in parallel to a lateral surface of the display area, wherein the spacers are separated from each other by a predetermined distance in the non-display area and disposed in a two columnar form;
an organic light emitting layer separately disposed for each pixel region on the first electrode;
a second electrode on an entire surface of the display area on the organic light emitting layer;
an organic layer on an entire surface of the substrate including the second electrode;
a barrier film located to face the substrate; and
an adhesive interposed between the substrate and barrier film to adhere the substrate to the barrier film so as to implement a panel state.

2. The flexible organic electroluminescent device of claim 1 , wherein spacers formed in the first column are alternately disposed not to correspond to spacers formed in the second column.

3. The flexible organic electroluminescent device of claim 1 , wherein the spacers are disposed in a straight line shape in parallel to a lateral surface of the display area in the non-display area.

4. The flexible organic electroluminescent device of claim 1 , wherein a spacer is formed on the bank of the display area.

5. The flexible organic electroluminescent device of claim 1 , wherein a passivation layer made of an inorganic insulating material is interposed between an upper and a lower portion of the organic layer.

6. The flexible organic electroluminescent device of claim 1 , wherein the substrate is configured with one selected from a flexible glass substrate and a plastic plate.

7. The flexible organic electroluminescent device of claim 1 , wherein an interlayer insulating layer made of an inorganic insulating material and an organic insulating layer are interposed between the switching thin film transistor and drive thin film transistor and first electrode.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Miso
• Kim Dohyung
• Na Sehwan
• Choi Chimin

Classifications

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/8722

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

• H10K59/873 Primary

  Encapsulations · CPC title

• H10K59/8723

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

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title