Flexible display and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-9623633-B2
Application number	US-201314064630-A
Country	US
Kind code	B2
Filing date	Oct 28, 2013
Priority date	Aug 28, 2009
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A flexible display comprises a flexible substrate made of plastic material, a display element on a first surface of the flexible substrate, and a surface residual film containing at least one of a metal material or a metal oxide material. The surface residual film is bonded to at least a part of a second surface of the flexible substrate. The second surface is opposed to the first surface. A method for manufacturing a flexible display comprises preparing a glass substrate, forming adhesive material film on the glass substrate, the adhesive material film being made of at least one of a metal material or a metal oxide material, and forming a flexible substrate from plastic material on the adhesive material film.

First claim

What is claimed is:

1. A method for manufacturing a flexible display, the method comprising:
preparing a glass substrate;
forming an adhesive material film directly on the glass substrate, the adhesive material film consisting of aluminum oxide
forming a flexible substrate from a plastic material on the adhesive material film, wherein the plastic material is formed from a material including a polyimide that includes —CONH— as a functional group;
forming a display element on the flexible substrate; and
separating the flexible substrate and the glass substrate from each other by irradiation of laser light.

2. The method as claimed in claim 1 , wherein the flexible substrate is formed by a slit coating method or a screen printing method.

3. The method as claimed in claim 2 , wherein the flexible substrate has a thickness ranging from 5 μm to 200 μm.

4. The method as claimed in claim 1 , wherein the flexible substrate has the same coefficient of thermal expansion as the glass substrate.

5. The method as claimed in claim 1 , wherein the flexible substrate has a coefficient of thermal expansion of less than 10 ppm/° C.

6. The method as claimed in claim 1 , wherein the aluminum oxide bonds to the functional group of —CONH—.

7. The method as claimed in claim 6 , wherein the adhesive material film is formed by atomic layer deposition.

8. The method as claimed in claim 7 , wherein the adhesive material film has a thickness ranging from 0.1 nm to 1000 nm.

9. The method as claimed in claim 1 , wherein the irradiation of laser light separates the flexible substrate and the glass substrate from each other by separating the flexible substrate from the adhesive material film.

10. The method as claimed in claim 1 , wherein the irradiation of laser light separates the flexible substrate and the glass substrate from each other by separating the adhesive material film from the glass substrate.

11. The method as claimed in claim 1 , wherein the display element includes a thin film transistor.

12. The method as claimed in claim 11 , wherein the display element is any one of an organic light emitting diode display device, a liquid crystal display device, and an electrophoretic display device.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Tae-Woong
• An Sung-Guk
• Jin Dong-Un
• Kim Hyung-Sik
• Kim Young-Gu
• Seo Sang-Joon

Classifications

• H10K59/1213

  the pixel elements being TFTs · CPC title

• B05D1/36

  Successively applying liquids or other fluent materials, e.g. without intermediate treatment · CPC title

• H10K71/80 Primary

  using temporary substrates · CPC title

• B32B15/08 Primary

  of synthetic resin · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title