Flexible display apparatus and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9627636-B2
Application number	US-201514736893-A
Country	US
Kind code	B2
Filing date	Jun 11, 2015
Priority date	Dec 19, 2014
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A flexible display apparatus includes a first flexible substrate including carbon, a second flexible substrate on the first flexible substrate, a metal layer between the first flexible substrate and the second flexible substrate, a barrier layer on the second flexible substrate, a thin film transistor (TFT) on the barrier layer, and an organic light-emitting device (OLED) electrically connected to the TFT.

First claim

What is claimed is:

1. A flexible display apparatus, comprising:
a first flexible substrate including carbon;
a second flexible substrate on the first flexible substrate;
a metal layer between the first flexible substrate and the second flexible substrate;
a barrier layer on the second flexible substrate;
a thin film transistor (TFT) on the barrier layer; and
an organic light-emitting device (OLED) electrically connected to the TFT.

2. The flexible display apparatus as claimed in claim 1 , wherein the first flexible substrate has a carbon ratio that is 60% or higher.

3. The flexible display apparatus as claimed in claim 1 , further comprising a metal oxide layer between the metal layer and the second flexible substrate.

4. The flexible display apparatus as claimed in claim 1 , wherein the second flexible substrate has a thickness of about 5 μm to about 50 μm.

5. The flexible display apparatus as claimed in claim 1 , wherein the first flexible substrate and the second flexible substrate include a polymer organic material.

6. A method of manufacturing a flexible display apparatus, the method comprising:
forming a first flexible substrate by forming a first polymer layer on a supporting layer and carbonizing or graphitizing the first polymer layer;
forming a metal layer on the first flexible substrate;
forming a second flexible substrate by forming a second polymer layer on the metal layer;
forming a barrier layer on the second flexible substrate;
forming a thin film transistor (TFT) on the barrier layer; and
forming an organic light-emitting device (OLED) electrically connected to the TFT.

7. The method as claimed in claim 6 , wherein forming the first flexible substrate includes forming the first flexible substrate such that the first flexible substrate has a carbon ratio that is 60% or higher.

8. The method as claimed in claim 6 , further comprising forming a metal oxide layer after forming the metal layer and before forming the second flexible substrate.

9. The method as claimed in claim 8 , wherein forming the metal oxide layer includes oxidizing a surface of the metal layer.

10. The method as claimed in claim 6 , wherein forming the first flexible substrate includes carbonizing the first polymer layer at a temperature of about 300° C. to about 4,000° C.

11. The method as claimed in claim 6 , wherein forming the second flexible substrate includes forming the second flexible substrate such that the second flexible substrate has a thickness of about 5 μm to about 50 μm.

12. A flexible substrate, comprising:
a first polymer layer having a carbon ratio that is 60% or higher;
a second polymer layer on the first polymer layer;
a metal layer between the first polymer layer and the second polymer layer; and
a barrier layer disposed on the second polymer layer.

13. The flexible substrate as claimed in claim 12 , wherein a metal oxide layer is between the metal layer and the second polymer layer.

14. The flexible substrate as claimed in claim 12 , wherein the second polymer layer has a thickness of about 5 μm to about 50 μm.

Assignees

• Samsung Display Co Ltd

Inventors

• Heo Jun
• An Sungguk
• Bae Sungsik

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/0097 Primary

  Electricity · mapped topic

• H01L2251/5338

  Electricity · mapped topic

• H10K50/11

  characterised by the electroluminescent [EL] layers · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title