# US 2008/0186582 A1 · Antiglare film and transmission-type liquid crystal display

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2008/0186582 A1
- Document ID: US20080186582A1
- Status: Published application
- Kind: A1
- Application number: 11/879,883
- Filed: 2007-07-18
- Published: 2008-08-07
- Earliest claimed: 2007-02-02
- Assignees: Toppan Printing Co., Ltd.
- Inventors: Yu Matsuura; Koichi Saito; Kenzo Kasahara
- Web page: https://patentgrep.com/patent/US20080186582A1

## CPC

- G02F 1/133502: {Antiglare, refractive index matching layers}
- 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 antiglare film is disclosed including a transparent substrate; and an antiglare layer on the transparent substrate wherein concaves and convexes are formed on the surface of the layer. As for the surface of the antiglare layer, ten point height of roughness profile Rz1 according to JIS-B0601-1994 is 0.4-0.9 μm (cutoff wavelength:0.8 mm) and ten point height of roughness profile Rz2 according to JIS-B0601-1994 is 0.02-0.06 μm (cutoff wavelength:0.008 mm).

## Claims

### Claim 1

An antiglare film comprising:
a transparent substrate; and
an antiglare layer on the substrate, wherein concaves and convexes are formed in a surface of the layer;
wherein ten point height of roughness profile Rz1 of the surface according to JIS-B0601-1994 is 0.4-0.9 μm (cutoff wavelength:0.8 mm) and ten point height of roughness profile Rz2 of the surface according to JIS-B0601-1994 is 0.02-0.06 μm (cutoff wavelength:0.008 mm).

### Claim 2 (depends on 1)

The antiglare film according to claim 1,
wherein haze value of the layer is 30-39%.

### Claim 3 (depends on 1)

The antiglare film according to claim 1,
wherein the layer comprising a binder matrix and a particle which is an amorphous aggregate, and wherein a refractive index of the binder matrix is different from a refractive index of the particle.

### Claim 4 (depends on 3)

The antiglare film according to claim 3,
wherein difference in the refractive index between the binder matrix and the particle is 0.03-0.20.

### Claim 5 (depends on 1)

The antiglare film according to claim 1,
wherein the layer comprising a binder matrix, particle A which is an amorphous aggregate and particle B which is spherical, and wherein a refractive index of particle A or particle B is different from a refractive index of the binder matrix.

### Claim 6 (depends on 5)

The antiglare film according to claim 5,
wherein difference in the refractive index between the binder matrix and particle A is 0.03-0.20, and wherein difference in the refractive index between the binder matrix and particle B is 0.03-0.20.

### Claim 7 (depends on 5)

The antiglare film according to claim 5,
wherein total content of particle A and particle B in the layer is 10-40 wt % based on content of the binder matrix.

### Claim 8 (depends on 1)

A transmission type liquid crystal display comprising:
an antiglare film according to claim 1;
a polarizing plate;
a liquid crystal cell;
a polarizing plate; and
a backlight unit.