Anti-reflective coating film
The present invention relates to an anti-reflective coating film. This anti-reflective coating film shows more improved interface adhesion and scratch resistance, which can be manufactured by a simple process.
1. An anti-reflective coating film, comprising:
a first layer that comprises a binder and inorganic nanoparticles and that has infiltrated into a substrate; and
a second layer that comprises a binder and hollow particle layers, each of the layers comprises sequentially connected hollow particles and the layers are adjacent to each other, and that covers the first layer,
wherein a maximum distance between neighboring hollow particles comprised in the hollow particle layers is 60 nm or less.
2. The anti-reflective coating film according to claim 1 , comprising:
a first layer that comprises a first (meth)acrylate-based binder and inorganic nanoparticles in the first (meth)acrylate-based binder, and is infiltrated into a substrate; and
a second layer that comprises a second (meth)acrylate-based binder and hollow particle layers in the second (meth)acrylate-based binder, and covers the first layer.
3. The anti-reflective coating film according to claim 1 , wherein the second layer comprises 2 to 5 hollow particle layers.
4. The anti-reflective coating film according to claim 1 , further comprising one or more hollow particles apart from the hollow particle layers.
5. The anti-reflective coating film according to claim 4 , wherein one or more hollow particles are apart from the hollow particle layers with a distance of 30 to 150 nm.
6. The anti-reflective coating film according to claim 4 , wherein the number of the hollow particles apart from the hollow particle layers is 10% or less of the total number of the hollow particles comprised in the film.
7. The anti-reflective coating film according to claim 1 , wherein a ratio of the cross-sectional area of the hollow particles to any cross-sectional area of the second layer is 70 to 95%.
8. The anti-reflective coating film according to claim 2 , wherein the first (meth)acrylate-based binder comprises a crosslinked polymer of a (meth)acrylate-based compound having a molecular weight of less than 600.
9. The anti-reflective coating film according to claim 2 , wherein the second (meth)acrylate-based binder comprises a crosslinked copolymer of a (meth)acrylate-based compound having a molecular weight of less than 600 and a (meth)acrylate-based compound having a molecular weight of 600 to 100,000.
10. The anti-reflective coating film according to claim 8 , wherein the first layer further comprises the region having the crosslinked copolymer of the (meth)acrylate-based compound having a molecular weight of less than 600 and the (meth)acrylate-based compound having a molecular weight of 600 to 100,000, in addition to the region having the crosslinked polymer.
11. The anti-reflective coating film according to claim 1 , wherein the second layer further comprises inorganic nanoparticles.
12. The anti-reflective coating film according to claim 10 , wherein the region having the crosslinked copolymer is located to a depth of approximately 5 to 50% of the first layer, based on the interface between the first and second layers.
13. The anti-reflective coating film according to claim 9 , wherein the crosslinked copolymer is comprised to exhibit an increasing distribution gradient toward the second layer.
14. The anti-reflective coating film according to claim 2 , wherein the second (meth)acrylate-based binder comprises a crosslinked copolymer of a (meth)acrylate-based compound having a molecular weight of less than 600, a (meth)acrylate-based compound having a molecular weight of 600 to 100,000 and a fluorine-based (meth)acrylate compound.
15. The anti-reflective coating film according to claim 1 , wherein the inorganic nanoparticles have a number average diameter of 5 to 50 nm.
16. The anti-reflective coating film according to claim 1 , wherein the inorganic nanoparticles are silica nanoparticles.
17. The anti-reflective coating film according to claim 1 , wherein the hollow particles have a number average diameter of 5 to 80 nm.
18. The anti-reflective coating film according to claim 1 , wherein the hollow particles are hollow silica particles.
19. The anti-reflective coating film according to claim 1 , wherein the second layer has a thickness of 10 to 300 nm.