Display device having window member and method of manufacturing window member

Patent metadata

Field	Value
Publication number	US-10096792-B2
Application number	US-201615160986-A
Country	US
Kind code	B2
Filing date	May 20, 2016
Priority date	Aug 24, 2015
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A display device includes a window member and a display module coupled to the window member. The window member includes a first resin layer and a second resin layer. The first resin layer is on the display module and has a first elongation, a first thickness, and a first hardness. The second resin layer is on the display module and the first resin layer and has a second elongation smaller than the first elongation, a second thickness greater than the first thickness, and a second hardness greater than the first hardness.

First claim

What is claimed is:

1. A display device comprising:
a window member; and
a display module coupled to the window member, the window member comprising:
a first resin layer on the display module, the first resin layer having a first elongation applying a first strain to the first resin layer, a first thickness, and a first hardness; and
a second resin layer on the display module and the first resin layer, the second resin layer having a second elongation smaller than the first elongation, the second elongation applying a second strain to the second resin layer, the second strain being smaller than the first strain, a second thickness greater than the first thickness, and a second hardness greater than the first hardness.

2. The display device of claim 1 , wherein the first thickness is in a range from about 150 micrometers to about 250 micrometers and the second thickness is in a range from about 300 micrometers to about 700 micrometers.

3. The display device of claim 2 , wherein the first hardness corresponds to a hardness of a pencil hardness of about 2B to about F and the second hardness corresponds to a hardness of a pencil hardness of about 3H to about 5H.

4. The display device of claim 3 , wherein the first elongation is in a range from about 20% to about 100% and the second elongation is in a range from about 1% to about 10%.

5. The display device of claim 1 , wherein the first resin layer comprises polycarbonate or polyethylene terephthalate and the second resin layer comprises an acrylic-based resin.

6. The display device of claim 5 , wherein the acrylic-based resin comprises polymethyl methacrylate.

7. The display device of claim 1 , wherein the window member further comprises a bezel layer between the first resin layer and the second resin layer and partially overlapping with the first resin layer and the second resin layer.

8. The display device of claim 1 , wherein the first resin layer comprises a first front surface and a first rear surface closer to the display module than the first front surface, the second resin layer comprises a second front surface and a second rear surface closer to the display module than the second front surface, and the window member further comprises a hard coating layer on at least one surface of the first rear surface and the second front surface.

9. The display device of claim 8 , wherein the hard coating layer has a thickness of about 5 micrometers to about 35 micrometers.

10. The display device of claim 1 , wherein the window member comprises a flat surface area and a first side surface area bent from a first side of the flat surface area.

11. The display device of claim 10 , wherein the window member further comprises a second side surface area bent from a second side of the flat surface area, which faces the first side of the flat surface area.

12. The display device of claim 1 , wherein the window member further comprises an optical clear adhesive layer between the first resin layer and the second resin layer.

13. The display device of claim 12 , wherein the first resin layer comprises a first front surface and a first rear surface closer to the display module than the first front surface, the second resin layer comprises a second front surface and a second rear surface disposed closer to the display module than the second front surface, and the window member further comprises a bezel layer disposed on the first front surface and partially overlapped with the first and second resin layers.

14. The display device of claim 12 , wherein the optical clear adhesive layer has a thickness of about 25 micrometers to about 50 micrometers.

15. The display device of claim 1 , wherein the display module comprises a flexible display panel configured to generate an image and a touch panel coupled to the flexible display panel.

16. The display device of claim 15 , wherein the flexible display panel is an organic light emitting diode display panel.

Assignees

• Samsung Display Co Ltd

Inventors

• Ahn Hungkun
• An Sungguk
• You Jongsung
• You Sookkyung
• Kim Kitae

Classifications

• B32B27/36

  comprising polyesters · CPC title

• B32B27/365

  comprising polycarbonates · CPC title

• B32B2307/584

  Scratch resistance · CPC title

• B32B2457/00

  Electrical equipment · CPC title

• B32B2307/558

  Impact strength, toughness · CPC title