Window for display device and display device including the window

Patent metadata

Field	Value
Publication number	US-9423639-B2
Application number	US-201313864788-A
Country	US
Kind code	B2
Filing date	Apr 17, 2013
Priority date	Dec 14, 2012
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

Disclosed is a window for a display device that includes a first plastic substrate, a second plastic substrate disposed on one side of the first plastic substrate, and a bonding layer disposed between the first plastic substrate and second plastic substrate and bonding the first plastic substrate and the second plastic substrate, wherein the bonding layer has protrusions and depressions on a side in contact with the first plastic substrate.

First claim

What is claimed is:

1. A window for a display device, comprising:
a first plastic substrate;
a second plastic substrate disposed on one side of the first plastic substrate; and
a bonding layer disposed between the first plastic substrate and the second plastic substrate, the bonding layer has protrusions and depressions on a side in contact with the first plastic substrate, the bonding layer consists of a binder matrix and a filler, the binder matrix consists of a polyester-based compound, an acryl-based compound, or a combination thereof, and the filler consists of silica, alumina, titania, iron oxides, or a combination thereof, the bonding layer has an arithmetic average roughness (Ra) consisting of 0.20 μm to 0.35 μm at a side in contact with the first plastic substrate, the bonding layer has a refractive index of about 1.45 to about 1.60, and the window has a curved shape.

2. The window for a display device of claim 1 , wherein a first plastic substrate comprises polycarbonate, polymethylmethacrylate, cyclicolefin polymer, a copolymer thereof, or a combination thereof.

3. The window for a display device of claim 1 , wherein the second plastic substrate comprises a substrate film layer and a hard coating layer disposed on at least one side of the substrate film layer.

4. The window for a display device of claim 3 , wherein the substrate film layer comprises polyethylene terephthalate.

5. The window for a display device of claim 3 , wherein the hard coating layer comprises an acryl-based compound, an epoxy-based compound, or a combination thereof.

6. The window for a display device of claim 3 , wherein the hard coating layer has a thickness of about 5 μm to about 150 μm.

7. The window for a display device of claim 1 , wherein the window for a display device has surface haze of less than about 1.0%.

8. The window for a display device of claim 1 , wherein a first plastic substrate has a thickness of about 400 μm to about 800 μm.

9. The window for a display device of claim 1 , wherein the second plastic substrate has a thickness of about 50 μm to 200 μm.

10. A display device, comprising:
a display panel; and
a window for a display device disposed on one side of the display panel, said window comprising:
a first plastic substrate;
a second plastic substrate disposed on one side of the first plastic substrate; and
a bonding layer disposed between the first plastic substrate and the second plastic substrate, the bonding layer has protrusions and depressions on a side in contact with the first plastic substrate, the bonding layer consists of a binder matrix and a filler, the binder matrix consists of a polyester-based compound, an acryl-based compound, or a combination thereof, and the filler consists of silica, alumina, titania, iron oxides, or a combination thereof, the bonding layer has an arithmetic average roughness (Ra) entirely consisting of 0.20 μm to 0.35 μm at a side in contact with the first plastic substrate, the bonding layer has a refractive index of about 1.45 to about 1.60, and the window has a curved shape.

Assignees

• Samsung Display Co Ltd

Inventors

• Hongo Yuki
• Oh Ju-Suk
• Roh Hyoung-Suk
• Kim Hun-Kyo

Classifications

• B32B2307/306

  Resistant to heat · CPC title

• G02F1/133308 Primary

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• B32B2255/10

  on synthetic resin layer or on natural or synthetic rubber layer · CPC title

• B32B27/308

  comprising acrylic (co)polymers · CPC title

• B32B27/08

  of synthetic resin · CPC title