Flexible display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10818744-B2
Application number	US-201916393904-A
Country	US
Kind code	B2
Filing date	Apr 24, 2019
Priority date	Aug 18, 2016
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

Provided is a flexible display apparatus in which flexibility is secured and reliability of products is improved, and a method of manufacturing the same. The flexible display apparatus includes a display panel including a flexible area and a non-flexible area and having one surface and the other surface opposite to the one surface; a protective film attached to the one surface of the display pane; a first adhesive layer interposed between the flexible area of the display panel and the protective film and configured to have a first storage modulus; and a second adhesive layer interposed between the non-flexible area of the display panel and the protective film and configured to have a second storage modulus.

First claim

What is claimed is:

1. A method of manufacturing a flexible display apparatus, the method comprising:
preparing a display panel including a flexible area and a non-flexible area and having a first surface and a second surface opposite to the first surface;
providing a protective film;
interposing an adhesive between the protective film and the first surface of the display panel, and attaching the protective film to an entirety of the first surface of the display panel; and
curing a portion of the adhesive by irradiating UV light to the display panel corresponding to the non-flexible area,
wherein the adhesive includes a first adhesive portion corresponding to the flexible area of the display panel and a second adhesive portion corresponding to the non-flexible area of the display panel, and
the second adhesive portion has different physical properties from physical properties of the first adhesive portion by curing the portion of the adhesive by irradiating the UV light.

2. The method of claim 1 , wherein
the curing the adhesive by irradiating UV light to a portion of the display panel comprises:
forming the first adhesive portion interposed between the flexible area of the display panel and the protective film and having a first storage modulus; and
forming the second adhesive portion interposed between the non-flexible area of the display panel and the protective film and having a second storage modulus.

3. The method of claim 2 , wherein
the first storage modulus is less than the second storage modulus.

4. The method of claim 1 , wherein
the display panel includes a display unit and a pad unit, wherein
the display unit is formed in the flexible area of the display panel, and the pad unit is formed in the non-flexible area of the display panel.

5. A method of manufacturing a flexible display apparatus, the method comprising:
preparing a display panel including a flexible area and a non-flexible area;
providing a first protective film and a second protective film;
interposing a first adhesive layer between the first protective film and the flexible area of the display panel, and attaching the first protective film to the flexible area of the display panel;
interposing a second adhesive layer between the second protective film and the non-flexible area of the display panel, and attaching the second protective film to the non-flexible area of the display panel; and
curing the second adhesive layer by irradiating UV light to the display panel corresponding to the non-flexible area in order to make physical properties of the second adhesive layer different from physical properties of the first adhesive layer.

6. The method of claim 5 , wherein a first storage modulus of the first adhesive layer is less than a second storage modulus of the second adhesive layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kishimoto Hirotsugu
• Kim Youngji
• Park Hyunggyu
• Oh Soohee
• Won Seonggeun

Classifications

• H10K71/00 Primary

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• C09J2301/30

  characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title

• Y02P70/50

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