Anti-reflective film

Patent metadata

Field	Value
Publication number	US-10234599-B2
Application number	US-201715668437-A
Country	US
Kind code	B2
Filing date	Aug 3, 2017
Priority date	Jul 14, 2016
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

Disclosed herein is an anti-reflective film comprising: a hard coating layer; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein a ratio of an average particle diameter of the solid inorganic nanoparticles to an average particle diameter of the hollow inorganic nanoparticles is 0.26 to 0.55, and wherein at least 70 vol % of the entire solid inorganic nanoparticles are present within a distance corresponding to 50% of an entire thickness of the low-refractive layer from the interface between the hard coating layer and the low-refractive layer, and an anti-reflective film comprising: a hard coating layer containing a binder resin containing a photocurable resin, and organic or inorganic fine particles dispersed in the binder resin; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein a ratio of an average particle diameter of the solid inorganic nanoparticles to an average particle diameter of the hollow inorganic nanoparticles is 0.15 to 0.55, and wherein at least 70 vol % of the entire solid inorganic nanoparticles are present within a distance corresponding to 50% of an entire thickness of the low-refractive layer from the interface between the hard coating layer and the low-refractive layer.

First claim

What is claimed is:

1. An anti-reflective film comprising:
a hard coating layer; and
a low refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin,
wherein a ratio of an average particle diameter of the solid inorganic nanoparticles to an average particle diameter of the hollow inorganic nanoparticles is 0.26 to 0.55,
wherein the low-refractive layer includes the hollow inorganic nanoparticles in a higher amount by weight than the solid inorganic nanoparticles, and
wherein at least 70 vol % of the entire solid inorganic nanoparticles are present within a distance corresponding to 50% of an entire thickness of the low-refractive layer from the interface between the hard coating layer and the low-refractive layer.

2. The anti-reflective film of claim 1 , wherein: at least 30 vol % of the entire hollow inorganic nanoparticles are present in a region of the low-refractive layer at a distance exceeding 50% of the entire thickness of the low-refractive layer from the interface between the hard coating layer and the low-refractive layer.

3. The anti-reflective film of claim 1 , wherein: the average particle diameter of the hollow particles is in a range of 40 nm to 100 nm, and a particle diameter of the hollow particles is in a range of 10 nm to 200 nm.

4. The anti-reflective film of claim 1 , wherein: the average particle diameter of the solid particles is in a range of 1 nm to 30 nm, and a particle diameter of the solid particles is in a range of 0.1 nm to 100 nm.

5. The anti-reflective film of claim 1 , wherein: the solid inorganic nanoparticles are further distributed in a region close to an interface between the hard coating layer and the low-refractive layer than the hollow inorganic nanoparticles.

6. The anti-reflective film of claim 1 , wherein: at least 70 vol % of the entire solid inorganic nanoparticles are present within a distance corresponding to 50% of an entire thickness of the low-refractive layer from an interface between the hard coating layer and the low-refractive layer.

7. The anti-reflective film of claim 1 , wherein: at least 30 vol % of the entire hollow inorganic nanoparticles are present at a distance farther than that of the entire solid inorganic nanoparticles from an interface between the hard coating layer and low-refractive layer in a thickness direction of the low-refractive layer.

8. The anti-reflective film of claim 1 , wherein: at least 70 vol % of the entire solid inorganic nanoparticles are present within a distance corresponding to 30% of an entire thickness of the low-refractive layer from an interface between the hard coating layer and the low-refractive layer.

9. The anti-reflective film of claim 8 , wherein: at least 70 vol % of the entire hollow inorganic nanoparticles are present at a distance exceeding 30% of an entire thickness of the low-refractive layer from an interface between the hard coating layer and the low-refractive layer.

10. The anti-reflective film of claim 1 , wherein: the low-refractive layer includes a first layer containing at least 70 vol % of the entire solid inorganic nanoparticles and a second layer containing at least 70 vol % of the entire hollow inorganic nanoparticles, the first layer being positioned to be closer to an interface between the hard coating layer and the low-refractive layer than the second layer.

11. The anti-reflective film of claim 1 , wherein: each of the solid inorganic nanoparticles and the hollow inorganic nanoparticles contains one or more reactive functional groups selected from the group consisting of a hydroxyl group, a (meth)acrylate group, an epoxide group, a vinyl group, and a thiol group on a surface thereof.

12. The anti-reflective film of claim 1 , wherein: the binder resin contained in the low-refractive layer contains a cross-linked (co)polymer between a (co)polymer of a photopolymerizable compound and a fluorine-containing compound including a photoreactive functional group.

13. The anti-reflective film of claim 12 , wherein: the low-refractive layer contains 10 to 400 parts by weight of the hollow inorganic nanoparticles and 10 to 400 parts by weight of the solid inorganic nanoparticles, based on 100 parts by weight of the (co)polymer of the photopolymerizable compound.

14. The anti-reflective film of claim 1 , wherein: the low-refractive layer further contains a silane based compound including one or more reactive functional groups selected from the group consisting of a vinyl group and a (meth)acrylate group.

15. The anti-reflective film of claim 14 , wherein: the silane based compound including one or more reactive functional groups selected from the group consisting of the vinyl group and the (meth)acrylate group has a weight average molecular weight of 100 to 5,000.

16. The anti-reflective film of claim 14 , wherein the silane based compound contains 100 to 1000 g/mol equivalent weight of the reactive functional group.

17. The anti-reflective film according to claim 1 , wherein the hard coating layer contains a binder resin containing a photocurable resin, and organic or inorganic fine particles dispersed in the binder resin.

18. The anti-reflective film according to claim 1 , wherein the hard coating layer contains a binder resin containing a photocurable resin, and organic fine particles having a particle diameter of 1 to 10 μm or inorganic fine particles having a particle diameter of 1 nm to 500 nm.

19. The anti-reflective film according to claim 1 , wherein the film has a reflectance of 0.70% or less in a wavelength region from 380 nm to 780 nm.

20. An anti-reflective film comprising:
a hard coating layer containing a binder resin containing a photocurable resin, and organic or inorganic fine particles dispersed in the binder resin; and
a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin,
wherein a ratio of an average particle diameter of the solid inorganic nanoparticles to an average particle diameter of the hollow inorganic nanoparticles is 0.15 to 0.55,
wherein the low-refractive layer includes the hollow inorganic nanoparticles in a higher amount by weight than the solid inorganic nanoparticles, and
wherein at least 70 vol % of the entire solid inorganic nanoparticles are present within a distance corresponding to 50% of an entire thickness of the low-refractive layer from the interface between the hard coating layer and the low-refractive layer.

21. The anti-reflective film according to claim 20 , wherein at least 30 vol % of the entire hollow inorganic nanoparticles are present at a distance exceeding 50% of an entire thickness of the low-refractive layer from an interface between the hard coating layer and the low-refractive layer.

22. The anti-reflective film according to claim 20 , wherein the organic fine particles have a particle diameter of 1 to 10 μm, and the inorganic fine particles have a particle diameter of 1 nm to 500 nm.

23. The anti-reflective film according to claim 20 , wherein the film has a reflectance of 0.70% or less in a wavelength region from 380 nm to 780 nm.

24. The anti-reflective film of claim 20 , wherein: the low-refractive layer further contains a silane based compound including one or more reactive functional groups selected from the group consisting of a vinyl group and a (meth)acrylate group.

Assignees

• Lg Chemical Ltd

Inventors

• Byun Jin Seok
• Kim Jae Young
• Chang Yeong Rae
• Kim Boo Kyung
• Jang Seok Hoon

Classifications

• G02B1/14

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

• G02B1/11

  Anti-reflection coatings · CPC title

• C08G77/442

  containing vinyl polymer sequences · CPC title

• G02B1/113

  using inorganic layer materials only · CPC title

• C08L33/06

  of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical · CPC title