Composite substrate structure and touch panel having the same
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, a hydrophobic layer disposed on the transparent substrate, and a diamond-like carbon layer disposed between the transparent substrate and the hydrophobic layer, wherein the hydrophobic layer has a coefficient of static friction less than or equal to about 0.1.
1. A composite substrate structure, comprising:
a transparent substrate;
a hydrophobic layer disposed on the transparent substrate;
a diamond-like carbon layer disposed between the transparent substrate and the hydrophobic layer; and
a middle layer disposed between the diamond-like carbon layer and the hydrophobic layer, wherein:
a surface of the middle layer abuts a surface of the diamond-like carbon layer at a bonding interface,
the middle layer is formed of a silicon carbon based material, and
the hydrophobic layer has a coefficient of static friction less than or equal to about 0.1.
2. 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%.
3. The composite substrate structure of claim 1 , wherein a first surface of the hydrophobic layer opposite to a second surface the hydrophobic layer that faces the diamond-like carbon layer has a contact angle greater than 110 degrees.
4. The composite substrate structure of claim 1 , wherein the hydrophobic layer has a thickness ranging from about 5 nanometers to about 30 nanometers.
5. The composite substrate structure of claim 1 , wherein the diamond-like carbon layer has a thickness less than or equal to about 10 nanometers.
6. The composite substrate structure of claim 1 , wherein the diamond-like carbon layer has a content percentage of spa bonds greater than or equal to about 15%.
7. 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 includes a silicon-based material.
8. The composite substrate structure of claim 7 , wherein the adhesive layer has a thickness ranging from about 5 nanometers to about 10 nanometers.
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 and a plurality of second anti-reflection layers,
each second anti-reflection layer of the plurality of second anti-reflection layers has a refractive index less than that of each first anti-reflection layer of the plurality of first anti-reflection layers,
the number of first anti-reflection layers that define the plurality of first anti-reflection layers corresponds to the number of second anti-reflection layers that define the plurality of second anti-reflection layers, and
the first anti-reflection layers and the second anti-reflection layers are alternately laminated.
11. The composite substrate structure of claim 10 , wherein:
each first anti-reflection layer of the plurality of first anti-reflection layers has a refractive index greater than about 1.6, and
each second anti-reflection layer of the plurality of second anti-reflection layers has a refractive index less than about 1.55.
12. The composite substrate structure of claim 10 , wherein:
one first anti-reflection layer of the plurality of first anti-reflection layers is arranged adjacent to the transparent substrate, and
one second anti-reflection layer of the plurality of 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 first anti-reflection layer of the plurality of first anti-reflection layers is arranged adjacent to the adhesive layer, and
one second anti-reflection layer of the plurality of second anti-reflection layers is arranged adjacent to the diamond-like carbon layer.
14. The composite substrate structure of claim 10 , wherein:
each of the plurality of first anti-reflection layers is mainly formed of niobium oxide, titanium oxide, zirconium oxide, aluminum oxide, silicon oxynitride or silicon nitride, and
each of the plurality of second anti-reflective layers is mainly formed of silicon oxide or magnesium fluoride.
15. The composite substrate structure of claim 1 , wherein the middle layer has a content percentage of silicon atoms ranging from about 10% to about 20% and a content percentage of carbon atoms ranging from about 80% to about 90%.
16. A touch panel having composite substrate structure, comprising:
a transparent substrate having a first face and a second face parallel to the first face;
a diamond-like carbon layer disposed on the transparent substrate and positioned on the first face;
a hydrophobic layer disposed at a side of the diamond-like carbon layer opposite to the transparent substrate;
a middle layer disposed between the diamond-like carbon layer and the hydrophobic layer, wherein:
a surface of the middle layer abuts a surface of the diamond-like carbon layer at a bonding interface, and
the middle layer is formed of a silicon carbon based material; and
a touch control unit disposed under the second face of the transparent substrate, wherein the hydrophobic layer has a coefficient of kinetic friction less than or equal to about 0.1 with respect to a dustless cloth.
17. The touch panel of claim 16 , wherein the touch control unit comprises a touch sensing electrode layer disposed at the second face of the transparent substrate.
18. The touch panel of claim 16 , wherein the touch control unit comprises a first supporting substrate positioned under the second face of the transparent substrate.
19. The touch panel of claim 18 , wherein the touch control unit further comprises a touch sensing electrode layer disposed on the first supporting substrate.
20. The touch panel of claim 16 , wherein:
the touch control unit comprises a second supporting substrate and a third supporting substrate,
the second supporting substrate is positioned under the second face of the transparent substrate, and
the third supporting substrate is positioned under the second supporting substrate.