Anti-glare film, method for producing anti-glare film, polarizer, and image display device having different size particles with impregnation layers
First Claim
Patent Images
1. An antiglare film comprising:
- a light-transmitting substrate; and
a diffusion layer having a surface roughness on a surface thereof and being formed on at least one side of the light-transmitting substrate,wherein the diffusion layer comprises organic fine particles (A), organic fine particles (B), and a cured product of a binder component, andfollowing expressions (1), (2), and (3) are satisfied;
Δ
A<
Δ
B
expression (1),
RA>
RB
expression (2), and
CA/RA3<
CB/RB3
expression (3),where CA represents a content of the organic fine particles (A) in the diffusion layer, RA represents an average particle size thereof, and Δ
A represents a refractive index difference thereof relative to the cured product of the binder component, andCB represents a content of the organic fine particles (B) in the diffusion layer, RB represents an average particle size thereof, and Δ
B represents a refractive index difference thereof relative to the cured product of the binder component, andwherein the organic fine particles (A) comprise an impregnation layer (A) formed by impregnating with the binder component organic fine particles constituting organic fine particles (A),the organic fine particles (B) comprise an impregnation layer (B) formed by impregnating with the binder component organic fine particles constituting the organic fine particles (B),an average thickness of the impregnation layer (B) formed in the organic fine particles (B) is thinner than an average thickness of the impregnation layer (A) formed in the organic fine particles (A), andwherein the Δ
A is 0.02 or greater, and the refractive index of the organic fine particles (A) is less than the refractive index of the cured product of the binder component.
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Abstract
The present invention provides an antiglare film having an excellent antiglare property and being capable of suitably preventing an occurrence of scintillation and a decrease in contrast. The antiglare film includes a light-transmitting substrate and a diffusion layer. The diffusion layer has a surface roughness and is formed on at least one side of the light-transmitting substrate, wherein the diffusion layer contains organic fine particles (A), organic fine particles (B), and a cured product of a binder component, and satisfies the expressions: (1) ΔA<ΔB; (2) RA>RB; and (3) CA/RA3<CB/RB3, where CA and CB represent a content of the organic fine particles (A) or the organic fine particles (B) in the diffusion layer, respectively, RA and RB represent an average particle size thereof, respectively, and ΔA and ΔB represent a refractive index thereof relative to the cured product of the binder component, respectively.
10 Citations
9 Claims
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1. An antiglare film comprising:
-
a light-transmitting substrate; and a diffusion layer having a surface roughness on a surface thereof and being formed on at least one side of the light-transmitting substrate, wherein the diffusion layer comprises organic fine particles (A), organic fine particles (B), and a cured product of a binder component, and following expressions (1), (2), and (3) are satisfied;
Δ
A<
Δ
B
expression (1),
RA>
RB
expression (2), and
CA/RA3<
CB/RB3
expression (3),where CA represents a content of the organic fine particles (A) in the diffusion layer, RA represents an average particle size thereof, and Δ
A represents a refractive index difference thereof relative to the cured product of the binder component, andCB represents a content of the organic fine particles (B) in the diffusion layer, RB represents an average particle size thereof, and Δ
B represents a refractive index difference thereof relative to the cured product of the binder component, andwherein the organic fine particles (A) comprise an impregnation layer (A) formed by impregnating with the binder component organic fine particles constituting organic fine particles (A), the organic fine particles (B) comprise an impregnation layer (B) formed by impregnating with the binder component organic fine particles constituting the organic fine particles (B), an average thickness of the impregnation layer (B) formed in the organic fine particles (B) is thinner than an average thickness of the impregnation layer (A) formed in the organic fine particles (A), and wherein the Δ
A is 0.02 or greater, and the refractive index of the organic fine particles (A) is less than the refractive index of the cured product of the binder component. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for producing an antiglare film comprising a light-transmitting substrate and a diffusion layer, the diffusion layer having a surface roughness on a surface thereof and being formed on at least one side of the light-transmitting substrate,
the method comprising steps of: -
applying a coating solution containing organic fine particles (A), organic fine particles (B), and a binder component on at least one side of the light-transmitting substrate; drying the coating solution so as to form a coating film; and curing the coating film so as to form the diffusion layer, wherein following expressions from (1) to (3) are satisfied;
Δ
A<
Δ
B
expression (1),
RA>
RB
expression (2), and
CA/RA3<
CB/RB3
expression (3),where CA represents a content of the organic fine particles (A) in the diffusion layer, RA represents an average particle size thereof, and Δ
A represents a refractive index difference thereof relative to the cured product of the binder component, andCB represents a content of the organic fine particles (B) in the diffusion layer, RB represents an average particle size thereof, and Δ
B represents a refractive index difference thereof relative to the cured product of the binder component, andwherein the organic fine particles (A) comprise an impregnation layer (A) formed by impregnating with the binder component organic fine particles constituting organic fine particles (A), the organic fine particles (B) comprise an impregnation layer (B) formed by impregnating with the binder component organic fine particles constituting the organic fine particles (B), an average thickness of the impregnation layer (B) formed in the organic fine particles (B) is thinner than an average thickness of the impregnation layer (A) formed in the organic fine particles (A), and wherein the Δ
A is 0.02 or greater, and the refractive index of the organic fine particles (A) is less than the refractive index of the cured product of the binder component. - View Dependent Claims (8, 9)
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Specification
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Current AssigneeDai Nippon Printing Company Limited
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Original AssigneeDai Nippon Printing Company Limited
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InventorsFurui, Gen, Kodama, Takashi, Honda, Makoto
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Primary Examiner(s)Doak, Jennifer L.
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Assistant Examiner(s)Dunning, Ryan S
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Application NumberUS13/877,591Publication NumberTime in Patent Office2,006 DaysField of SearchNoneUS Class Current1/1CPC Class CodesG02B 1/11 Anti-reflection coatingsG02B 1/111 using layers comprising org...G02B 5/0242 by means of dispersed parti...G02B 5/0268 characterized by the fabric...G02B 5/30 Polarising elements light-m...G02B 5/3025 Polarisers, i.e. arrangemen...
