Organic light emitting device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10658626-B2
Application number	US-201715681222-A
Country	US
Kind code	B2
Filing date	Aug 18, 2017
Priority date	Aug 31, 2012
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A method for manufacturing an organic light emitting device includes: forming an organic light emitting display panel including a substrate provided on a support substrate, an organic light emitting element on the substrate, and a thin film encapsulating film covering the organic light emitting element; detaching the support substrate from the organic light emitting display panel; attaching a bottom protecting film to a bottom of the organic light emitting display panel, the bottom protecting film comprising a first electricity removing layer configured to remove static electricity; and cutting the organic light emitting display panel into a plurality of organic light emitting devices.

First claim

What is claimed is:

1. An organic light emitting device comprising:
a flexible substrate;
an organic light emitting element on the flexible substrate in a display area of the flexible substrate;
a thin film encapsulating film covering the organic light emitting element; and
a bottom protecting film attached to a bottom of the flexible substrate, the bottom protecting film comprising a light blocking layer for blocking external light, an adhesive layer between the light blocking layer and the flexible substrate, a heat dissipating plate, and an additional adhesive layer between the heat dissipating plate and the light blocking layer,
wherein the heat dissipating plate and the light blocking layer directly contact the additional adhesive layer in a region overlapping the display area along a direction perpendicular to the display area.

2. The organic light emitting device of claim 1 , wherein the organic light emitting element comprises:
a gate line on the flexible substrate and configured to transmit a scan signal;
a data line and a driving voltage line crossing the gate line in an insulated manner and configured to transmit a data signal and a driving voltage, respectively;
a switching thin film transistor connected to the gate line and the data line;
a driving thin film transistor connected to the switching thin film transistor and the driving voltage line;
a pixel electrode connected to the driving thin film transistor;
an organic light emitting member on the pixel electrode; and
a common electrode on the organic light emitting member.

3. The organic light emitting device of claim 1 , wherein the bottom protecting film further comprises a carrier film, and
wherein the adhesive layer is on the carrier film.

4. The organic light emitting device of claim 3 , wherein the bottom protecting film further comprises a first electricity removing layer configured to remove static electricity, the bottom protecting film being between the flexible substrate and the adhesive layer.

5. The organic light emitting device of claim 3 , wherein the carrier film comprises one of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethylene sulfide (PES), and polyethylene (PE).

6. The organic light emitting device of claim 3 , wherein the carrier film is 25 μm to 300 μm thick.

7. The organic light emitting device of claim 1 , wherein the adhesive layer is an acryl-based strong adhesive film.

8. The organic light emitting device of claim 7 , wherein adhesiveness of the adhesive layer is greater than 500 gf/inch when a substance to be adhered is stainless steel (SUS).

Assignees

• Samsung Display Co Ltd

Inventors

• Mun Hyo-Young
• Kim Young-Gu
• Kim Young-Ji
• Cho Hyun-Jun

Classifications

• C08J2333/00

  Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers · CPC title

• C08J2423/06

  Polyethene · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• H01L2251/5338

  Electricity · mapped topic