# US 10,871,596 B2 · Antireflection film, antireflection product, polarizing plate, image display device, module, liquid crystal display device with touch panel, and method of manufacturing antireflection film

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- Number: US 10,871,596 B2
- Document ID: US10871596B2
- Status: Granted
- Kind: B2
- Application number: 16/276,164
- Filed: 2019-02-14
- Published: 2019-06-20
- Granted: 2020-12-22
- Earliest claimed: 2016-08-15
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Chihiro Masuda; Miho Asahi; Yuta Fukushima; Ryuji Saneto
- Web page: https://patentgrep.com/patent/US10871596B2

## CPC

- G02B 1/118: having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
- G02B 1/111: using layers comprising organic materials
- G02B 1/14: Protective coatings, e.g. hard coatings
- G02F 1/133502: {Antiglare, refractive index matching layers}
- G02F 1/133528: {Polarisers}
- G02B 5/30: Polarising elements (light-modulating devices with active elements G02F1/00)
- G02F 1/13338: {Input devices, e.g. touch panels}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

An antireflection film including: a plastic substrate; and an antireflection layer, where the antireflection layer includes a metal oxide particle and a binder resin, the antireflection layer has a moth eye structure including an uneven shape formed by the metal oxide particle, a total light transmittance of the antireflection film where light is incident from a side of the antireflection layer opposite the plastic substrate is 88% or more, and where transmittances of light at wavelengths of 480 nm and 580 nm of the antireflection film where the light is incident from a side of the antireflection layer opposite the plastic substrate are respectively T480 and T580, T580−T480≤3.5% is satisfied, and a method of manufacturing the antireflection film, and an antireflection product, a polarizing plate, an image display device, a module, and a liquid crystal display device with a touch panel, containing the antireflection film.

## Claims

### Claim 1

A module comprising:
two antireflection films each comprising:
a plastic substrate; and
an antireflection layer,
wherein the antireflection layer includes a metal oxide particle and a binder resin,
the antireflection layer has a moth eye structure including an uneven shape formed by the metal oxide particle,
a total light transmittance of the antireflection film in a case where light is incident from a side of the antireflection layer opposite to the plastic substrate is 88% or more, and
in a case where transmittances of light at wavelengths of 480 nm and 580 nm of the antireflection film where the light is incident from a side of the antireflection layer opposite to the plastic substrate are respectively T480 and T580, T580−T480≤3.5% is satisfied;
each antireflection film further comprising:
a hard coat layer between the plastic substrate and the antireflection layer,
wherein the two antireflection films are placed to face each other via an air gap.

### Claim 2 (depends on 1)

The module according to claim 1,
wherein in the two antireflection films, the antireflection layer is disposed closer to the air gap side than the plastic substrate.

### Claim 3 (depends on 2)

A liquid crystal display device with a touch panel comprising:
the module according to claim 2;
a touch panel on a side of the plastic substrate of one antireflection film of the two antireflection films opposite to the antireflection layer side; and
a liquid crystal cell on a side of the plastic substrate of the other antireflection film opposite to the antireflection layer side.