Anti-refractive film

Patent metadata

Field	Value
Publication number	US-2018106929-A1
Application number	US-201715554966-A
Country	US
Kind code	A1
Filing date	Mar 9, 2017
Priority date	Mar 9, 2016
Publication date	Apr 19, 2018
Grant date	—

Abstract

Disclosed herein is an anti-reflective film including: 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 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, and at the time of fitting polarization ellipticity measured by ellipsometry for the first layer or/and the second layer included in the low-refractive layer using a Cauchy model represented by the following General Equation 1, the second layer satisfies a predetermined condition.

First claim

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 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, and at the time of fitting polarization ellipticity measured by ellipsometry for the second layer included in the low-refractive layer using a Cauchy model represented by the following General Equation 1, the second layer satisfies the following conditions: A is 1.0 to 1.50, B is 0 to 0.007, and C is 0 to 1*10 −3 :

n


(
λ
)

=

A
+

B

λ
2

+

C

λ
4

[

General



Equation



1

]

in General Equation 1, n(λ) is a refractive index at a wavelength of λ, λ is in a range of 300 nm to 1800 nm, and A, B, and C are Cauchy parameters.

2 . An anti-reflective film including: 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 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, and at the time of fitting polarization ellipticity measured by ellipsometry for the first layer included in the low-refractive layer using a Cauchy model represented by the following General Equation 1, the first layer satisfies the following Condition: A is 1.0 to 1.65:

n


(
λ
)

=

A
+

B

λ
2

+

C

λ
4

[

General



Equation



1

]

wherein, in General Equation 1, n(λ) is a refractive index at a wavelength of λ, λ is in a range of 300 nm to 1800 nm, and A, B, and C are Cauchy parameters.

3 . An anti-reflective film including: 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 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, and at the time of fitting polarization ellipticity measured by ellipsometry for the first layer and the second layer included in the low-refractive layer using a Cauchy model represented by the following General Equation 1, the difference between the A value for the first layer and the A value for the second layer is 0.100 to 0.200:

n


(
λ
)

=

A
+

B

λ
2

+

C

λ
4

[

General



Equation



1

]

wherein, in General Equation 1, n(λ) is a refractive index at a wavelength of λ, λ is in a range of 300 nm to 1800 nm, and A, B, and C are Cauchy parameters.

4 . The anti-reflective film according to claim 1 ,
wherein the polarization ellipticity measured by ellipsometry is determined by measuring linear polarization in a wavelength range of 380 nm to 1000 nm at an incident angle of 70°.

5 . The anti-reflective film according to claim 1 , wherein at the time of fitting the polarization ellipticity measured by ellipsometry for the first layer included in the low-refractive layer using the Cauchy model represented by General Equation 1, the first layer satisfies the following Conditions: A is 1.0 to 1.65, B is 0.0010 to 0.0350, and C is 0 to 1*10 −3 .

n

Assignees

• Lg Chemical Ltd

Inventors

• Song In Young
• Byun Jin Seok
• Kim Boo Kyung
• Jang Seok Hoon
• Chang Yeong Rae
• Oh Sung Joon

Classifications

• B32B2264/102

  Oxide or hydroxide · CPC title

• B32B2264/12

  Mixture of at least two particles made of different materials · CPC title

• C08K7/26

  Silicon- containing compounds · CPC title

• C08J2435/02

  Characterised by the use of homopolymers or copolymers of esters (C08J2435/06, C08J2435/08 take precedence) · CPC title

• C08K3/36

  Silica · CPC title