Organic-inorganic-hybrid thin film and method of manufacturing the same
Provided is an organic-inorganic-hybrid thin film, which is provided in the form of a layered structure to prevent the scratching of the surface of a variety of kinds of displays, such as those of smartphones, tablet PCs, and laptop computers, and to fabricate ITO hard coating films, gas-barrier plates for flexible displays, and cover windows, and to a method of manufacturing the same, and more particularly, the organic-inorganic-hybrid thin film is provided in the form of a layered structure exhibiting the high light transmittance, mechanically flexible properties, lightweightness, and chemical resistance of a curable resin, and also ensuring the scratch resistance, heat dissipation performance, gas-barrier properties, and inherent refractive index matching of inorganic particles, thus exhibiting optical compensation effects, thereby increasing final surface hardness and satisfying barrier properties and index matching properties.
1. An organic-inorganic-hybrid thin film, comprising:
a substrate having an upper surface and a lower surface;
a coating layer formed on either or both of the upper surface and the lower surface of the substrate; and
an adhesive layer formed on a surface of the coating layer opposite to a surface of the coating layer applied on the substrate,
wherein the coating layer comprises an organic-inorganic-hybrid material, the organic-inorganic-hybrid material comprising 50.0 to 70.0 wt % of a hexafunctional acrylate monomer, 15.0 to 30.0 wt % of a trifunctional or tetrafunctional acrylate monomer, 15.0 to 30.0 wt % of an acrylate oligomer, and 14 to 50 wt % of nanomaterial particles or surface-modified nanomaterial particles, wherein the nanomaterial particles or surface-modified nanomaterial particles comprise alumina nanoparticles.
2. The organic-inorganic-hybrid thin film of claim 1 , wherein the surface-modified nanomaterial particles are surface modified with a surface-treating agent including at least one selected from among 3-(trimethoxysilyl)propyl vinyl carbamate, 3-(trimethoxysilyl)propyl acrylate, 3-(trimethoxysilyl)propyl methacrylate, and 3-(2,3-epoxypropyloxy)propyl triethoxysilane so as to increase bondability between the surface-modified nanomaterial particles.
3. The organic-inorganic-hybrid thin film of claim 1 , wherein the coating layer comprises 80.0 to 99.7 wt % of the organic-inorganic-hybrid material, 0.2 to 5.0 wt % of a photoinitiator, 0.1 to 5 wt % of an additive, and 0.1 to 10 wt % of a leveler.
4. The organic-inorganic-hybrid thin film of claim 1 , wherein the coating layer has a film thickness after curing ranging from 1 nm to 300 μm.
5. The organic-inorganic-hybrid thin film of claim 1 , wherein the nanomaterial particles or the surface-modified nanomaterial particles of the coating layer have a particle size ranging from 1 nm to 200 nm.
6. The organic-inorganic-hybrid thin film of claim 1 , wherein the nanomaterial particles or the surface-modified nanomaterial particles are used in an amount ranging from 20 vol % to less than 30 vol %.
7. The organic-inorganic-hybrid thin film of claim 1 , wherein the nanomaterial particles or the surface-modified nanomaterial particles are used in an amount ranging from 30 vol % to 100 vol %.
8. A printed circuit board, comprising the organic-inorganic-hybrid thin film of claim 1 .
9. A glass board, comprising the organic-inorganic-hybrid thin film of claim 1 .
10. A film or device for a display, comprising the organic-inorganic-hybrid thin film of claim 1 .
11. A protective film, comprising the organic-inorganic-hybrid thin film of claim 1 .
12. An electronic product, comprising the organic-inorganic-hybrid thin film of claim 1 .
13. A plastic board, comprising the organic-inorganic-hybrid thin film of claim 1 .
14. An electronic package module, comprising the organic-inorganic-hybrid thin film of claim 1 .
15. A product for a car, comprising the organic-inorganic-hybrid thin film of claim 1 .
16. A method of manufacturing an organic-inorganic-hybrid thin film of claim 1 , comprising:
providing a substrate having an upper surface and a lower surface; forming an adhesive layer on a surface of a coating layer opposite to a surface of the coating layer applied on the substrate; and forming the coating layer including the nanomaterial particles or the surface-modified nanomaterial particles on at least one surface selected from among the upper surface and the lower surface of the substrate; and wherein the coating layer comprises an organic-inorganic-hybrid material, the organic-inorganic-hybrid material, comprising 50.0 to 70.0 wt % of a hexafunctional acrylate monomer, 15.0 to 30.0 wt % of a trifunctional or tetrafunctional acrylate monomer, 15.0 to 30.0 wt % of an acrylate oligomer, and 14 to 50 wt % of nanomaterial particles or surface-modified nanomaterial particles, wherein the nanomaterial particles or surface-modified nanomaterial particles comprise alumina nanoparticles.
17. The method of claim 16 , further comprising subjecting the coating layer to chemical etching or plasma etching, after the forming the coating layer.