Anti-reflective coating film

Patent metadata

Field	Value
Publication number	US-9482789-B2
Application number	US-201313841857-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Aug 26, 2011
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

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.

First claim

The invention claimed is:

1. An anti-reflective coating film, comprising: a first layer that comprises a first (meth)acrylate based binder and inorganic nanoparticles in the first (meth)acrylate based binder and that has infiltrated into a substrate; and a second layer that comprises a second (meth)acrylate based binder and 2 to 5 hollow particle layers in the second (meth)acrylate based binder and that covers and contacts the first layer; wherein each of the 2 to 5 hollow particle layers comprises sequentially connected hollow particles and the layers are adjacent to each other, wherein a ratio of the cross-sectional area of the hollow particles to any cross-sectional area of the second layer is 85 to 92%, and wherein adhesion of the anti-reflective coating film evaluated by a ASTM D-3359 cross cut test using a Nichiban tape is greater than 2B and equal to or less than 5B.

2. The anti-reflective coating film according to claim 1 , further comprising one or more hollow particles apart from the 2 to 5 hollow particle layers.

3. The anti-reflective coating film according to claim 2 , wherein one or more hollow particles are apart from the 2 to 5 hollow particle layers with a distance of 150 nm or less.

4. The anti-reflective coating film according to claim 2 , wherein the number of the hollow particles apart from the 2 to 5 hollow particle layers is 10% or less of the total number of the hollow particles comprised in the film.

5. The anti-reflective coating film according to claim 1 , 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.

6. The anti-reflective coating film according to claim 5 , 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.

7. The anti-reflective coating film according to claim 6 , 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.

8. The anti-reflective coating film according to claim 1 , 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.

9. The anti-reflective coating film according to claim 8 , wherein the crosslinked copolymer is comprised to exhibit an increasing distribution gradient toward the second layer.

10. The anti-reflective coating film according to claim 1 , wherein the second layer further comprises inorganic nanoparticles.

11. The anti-reflective coating film according to claim 1 , 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.

12. The anti-reflective coating film according to claim 1 , wherein the inorganic nanoparticles have a number average diameter of 5 to 50 nm.

13. The anti-reflective coating film according to claim 1 , wherein the inorganic nanoparticles are silica nanoparticles.

14. The anti-reflective coating film according to claim 1 , wherein the hollow particles have a number average diameter of 5 to 80 nm.

15. The anti-reflective coating film according to claim 1 , wherein the hollow particles are hollow silica particles.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Heon
• Chang Yeong-Rae
• Kang Joon-Koo
• Koo Jae-Pil

Classifications

• G02B1/14

  Protective coatings, e.g. hard coatings · CPC title

• B05D5/063

  Reflective effect (B05D5/067 takes precedence) · CPC title

• B32B27/14

  next to a particulate layer · CPC title

• C08J2301/12

  Cellulose acetate · CPC title

• G02B1/111 Primary

  using layers comprising organic materials · CPC title