Functional antireflection film

Patent metadata

Field	Value
Publication number	US-10545265-B2
Application number	US-201515516785-A
Country	US
Kind code	B2
Filing date	Oct 8, 2015
Priority date	Oct 10, 2014
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

Provided is an antireflection film including: a substrate layer; and a coating layer formed on at least one surface of the substrate layer, in which the coating layer includes a cured material of a composition containing a photo-curable (meth)acrylic acid ester resin; inorganic nanoparticles; a silicone-acrylate graft polymer including a polyacrylate main chain and a silicone side chain; and a solvent.

First claim

The invention claimed is:

1. An antireflection film comprising:
a substrate layer; and
a coating layer formed on at least one surface of the substrate layer,
wherein the coating layer comprises a cured material prepared from a composition containing a photo-curable (meth)acrylic acid ester resin; inorganic nanoparticles; a silicone-acrylate graft polymer including a polyacrylate main chain and a silicone side chain; and a solvent,
wherein a Newton's Ring produced after the antireflection film is pressurized on a polarizing film abates after 2 to 15 seconds after the pressure is removed.

2. The antireflection film of claim 1 , wherein the silicone-acrylate graft polymer has a weight average molecular weight of 1,000 to 2,500.

3. The antireflection film of claim 1 , wherein the silicone side chain is present in an amount of 10 wt % to 30 wt %, based on the total weight of the silicon-acrylate graft polymer.

4. The antireflection film of claim 1 , wherein the silicone side chain of the silicone-acrylate graft polymer is present at a surface of the coating layer.

5. The antireflection film of claim 1 , wherein the solvent has a polarity index of 5.0 or less.

6. The antireflection film of claim 1 , wherein the solvent comprises at least one selected from the group consisting of a benzene solvent, a ketone solvent, an alcohol solvent, and a combination thereof.

7. The antireflection film of claim 1 , wherein the photo-curable (meth)acrylic acid ester resin has a weight average molecular weight of 150 to 300.

8. The antireflection film of claim 1 , wherein the inorganic nanoparticles have an average particle diameter of 30 nm to 60 nm.

9. The antireflection film of claim 1 , wherein the inorganic nanoparticles comprise at least one selected from the group consisting of silica particles, titania particles, zirconium oxide particles, and a combination thereof.

10. The antireflection film of claim 1 , wherein the inorganic nanoparticles are surface-treated with a silane-based compound.

11. The antireflection film of claim 10 , wherein 10% to 50% of a total surface area of the inorganic nanoparticles is surface-treated with the silane-based compound.

12. The antireflection film of claim 10 , wherein the silane-based compound comprises at least one selected from the group consisting of 3-aminopropyltriethoxysilane (AOPTMS), methacryloxypropyltrimethoxysilane (MAPTMS), 3-methacryloxypropyltrimethoxysilane, and a combination thereof.

13. The antireflection film of claim 1 , wherein the composition comprises the silicone-acrylate graft polymer in an amount of 0.03 wt % to 0.1 wt %.

14. The antireflection film of claim 1 , wherein the composition comprises the solvent in an amount of 50 wt % to 90 wt %.

15. The antireflection film of claim 1 , wherein the cured material is formed by photo-curing the composition at a light energy of 200 mJ to 400 mJ.

16. The antireflection film of claim 1 , wherein the substrate layer comprises at least one selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polyether sulfone, polycarbonate, polypropylene, and a combination thereof.

17. The antireflection film of claim 1 , wherein the substrate layer has a thickness of 25 μm to 200 μm.

18. The antireflection film of claim 1 , wherein the coating layer has a thickness of 90 nm to 120 nm.

19. The antireflection film of claim 1 , further comprising:
an adhesive layer formed on a surface of the substrate layer opposite that of the coating layer; and
a release film layer formed on the adhesive layer.

Assignees

• Lg Chemical Ltd

Inventors

• Park Se-Jung
• Cho Hong-Kwan
• Kim Jang-Soon

Classifications

• G02B1/04

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title

• C08J7/0427 Primary

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• C08J2323/12

  Polypropene · CPC title

• C08K2003/2244

  of zirconium · CPC title

• G02B27/0025

  for optical correction, e.g. distorsion, aberration · CPC title