Composite substrate structure and touch panel having the same

Patent metadata

Field	Value
Publication number	US-10152149-B2
Application number	US-201514623520-A
Country	US
Kind code	B2
Filing date	Feb 17, 2015
Priority date	Feb 28, 2014
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

The present disclosure provides a composite substrate structure and a touch panel having composite substrate structure, for promoting abrasion resistance, visual transparency, and appearance. The composite substrate structure includes a transparent substrate and a diamond-like carbon layer. The diamond-like carbon layer is disposed on the transparent substrate and has a thickness less than or equal to about 15 nanometers.

First claim

What is claimed is:

1. A composite substrate structure, comprising:
a transparent substrate;
a diamond-like carbon layer disposed on the transparent substrate, wherein the diamond-like carbon layer has a thickness less than about 10 nanometers;
a middle layer disposed on the diamond-like carbon layer, wherein the middle layer comprises a silicon carbon based material; and
a hydrophobic layer disposed on the middle layer, wherein the middle layer is disposed between the diamond-like carbon layer and the hydrophobic layer;
wherein the hydrophobic layer comprises carbon-fluorine bonds and silicon-oxygen bonds, and
a ratio between the carbon-fluorine bonds present in the hydrophobic layer and the silicon-oxygen bonds present in the hydrophobic layer is at least 50:1.

2. The composite substrate structure of claim 1 , wherein the diamond-like carbon layer has a content percentage of sp 3 bonds greater than or equal to about 15%.

3. The composite substrate structure of claim 1 , wherein:
the hydrophobic layer is crystalline, and
the hydrophobic layer has a crystal proportion greater than about 50%.

4. The composite substrate structure of claim 1 , wherein a first surface of the hydrophobic layer opposite to a second surface of the hydrophobic layer that is facing the diamond-like carbon layer has a contact angle greater than 110 degrees.

5. The composite substrate structure of claim 1 , wherein the hydrophobic layer has a thickness ranging from about 5 nanometers to about 30 nanometers.

6. The composite substrate structure of claim 1 , further comprising an adhesive layer, wherein:
the adhesive layer is disposed between the transparent substrate and the diamond-like carbon layer, and
the adhesive layer comprises a silicon-based material.

7. The composite substrate structure of claim 6 , wherein the adhesive layer has a thickness ranging from about 5 nanometers to about 10 nanometers.

8. The composite substrate structure of claim 6 , wherein the adhesive layer comprises silicon dioxide.

9. The composite substrate structure of claim 1 , further comprising an anti-reflection film disposed between the transparent substrate and the diamond-like carbon layer.

10. The composite substrate structure of claim 9 , wherein:
the anti-reflection film comprises a plurality of first anti-reflection layers having a first refractive index and a plurality of second anti-reflection layers having a second refractive index,
each of the plurality of first anti-reflection layers and each of the plurality of second anti-reflection layers are interlaced with one another in parallel,
the first refractive index is less than the second refractive index, and
the number of the first anti-reflection layers is equal to the number of the second anti-reflection layers.

11. The composite substrate structure of claim 10 , wherein:
the first refractive index is greater than about 1.6, and
the second refractive index is less than about 1.55.

12. The composite substrate structure of claim 10 , wherein:
one of the first anti-reflection layers is arranged adjacent to the transparent substrate, and
one of the second anti-reflection layers is arranged adjacent to the diamond-like carbon layer.

13. The composite substrate structure of claim 10 , further comprising an adhesive layer disposed between the transparent substrate and the anti-reflection film, wherein:
one of the first anti-reflection layers is arranged adjacent to the adhesive layer, and
one of the second anti-reflection layers is arranged adjacent to the diamond-like carbon layer.

14. The composite substrate structure of claim 10 , wherein:
the first anti-reflection layers each are mainly formed of niobium oxide, titanium oxide, zirconium oxide, aluminum oxide, silicon oxynitride or silicon nitride, and
the second anti-reflective layers each are mainly formed of silicon oxide or magnesium fluoride.

15. The composite substrate structure of claim 1 , wherein at least 50 percent of atoms present in the hydrophobic layer are fluorine atoms.

16. A composite substrate structure, comprising:
a transparent substrate;
a diamond-like carbon layer disposed on the transparent substrate, wherein the diamond-like carbon layer has a thickness less than about 10 nanometers;
a hydrophobic layer comprising carbon-fluorine bonds and silicon-oxygen bonds, wherein a ratio between the carbon-fluorine bonds present in the hydrophobic layer and the silicon-oxygen bonds present in the hydrophobic layer is at least 50:1; and
an anti-reflection film disposed between the transparent substrate and the diamond-like carbon layer comprising a plurality of first anti-reflection layers having a first refractive index and a plurality of second anti-reflection layers having a second refractive index different than the first refractive index, wherein each of the plurality of first anti-reflection layers and each of the plurality of second anti-reflection layers are interlaced with one another in parallel.

17. The composite substrate structure of claim 16 , wherein:
the number of first anti-reflection layers is equal to the number of second anti-reflection layers.

Assignees

• Tpk Touch Solutions Xiamen Inc

Inventors

• Hsu I-Chung
• Hsu Kuo-Shu
• Zhang Chunyong
• Wu Yuchuan
• Huang Bangxiong
• Chen Binghui

Classifications

• C03C2217/78

  Coatings specially designed to be durable, e.g. scratch-resistant · CPC title

• C03C2217/76

  Hydrophobic and oleophobic coatings · CPC title

• C03C2217/734

  comprising an alternation of high and low refractive indexes · CPC title

• C03C2217/282

  Carbides, silicides · CPC title

• C03C2217/28

  Other inorganic materials · CPC title