# US 2018/0321532 A1 · Laminate and liquid crystal display device

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- Number: US 2018/0321532 A1
- Document ID: US20180321532A1
- Status: Published application
- Kind: A1
- Application number: 16/039,725
- Filed: 2018-07-19
- Published: 2018-11-08
- Earliest claimed: 2016-02-05
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Yasuyuki SASADA; Shuhei OKUDA
- Web page: https://patentgrep.com/patent/US20180321532A1

## CPC

- G02B 5/305: {including organic materials, e.g. polymeric layers}
- G02F 1/133528: {Polarisers}
- G02F 1/13363: Birefringent elements, e.g. for optical compensation
- G02F 2201/54: Arrangements for reducing warping-twist
- G02F 2202/22: Antistatic materials or arrangements
- G02F 2202/28: Adhesive materials or arrangements
- G02F 2202/40: Materials having a particular birefringence, retardation
- 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

Provided are a laminate including at least: a polarizing layer, an adhesive layer, a transparent layer, and a layer which contains an antistatic agent in this order, in which a thickness of the transparent layer is in a range of 0.1 to 5 μm, and a transition ratio of the antistatic agent after high temperature and high humidity test is in a range of 0% to 30%; and a liquid crystal display device including the laminate.

## Claims

### Claim 1

A laminate comprising at least:
a polarizing layer;
an adhesive layer;
a transparent layer; and
a layer which contains an antistatic agent, in this order,
wherein a thickness of the transparent layer is in a range of 0.1 to 10 μm, and
a transition ratio of the antistatic agent after high temperature and high humidity test is in a range of 0% to 30%.

### Claim 2 (depends on 1)

The laminate according to claim 1,
wherein the transition ratio of the antistatic agent after high temperature and high humidity test is in a range of 0.01% to 30%.

### Claim 3 (depends on 1)

The laminate according to claim 1,
wherein an equilibrium moisture absorptivity of the transparent layer is 2.0% by mass or less.

### Claim 4 (depends on 1)

The laminate according to claim 1,
wherein a moisture permeability of the transparent layer in terms of 5 μm is in a range of 200 to 5000 g/m2/day.

### Claim 5 (depends on 1)

The laminate according to claim 1,
wherein the transparent layer contains at least one of a fluorine-based compound and a silicon-based compound.

### Claim 6 (depends on 1)

The laminate according to claim 1,
wherein the transparent layer contains a styrene-based resin.

### Claim 7 (depends on 1)

The laminate according to claim 1,
wherein an in-plane retardation Re of the transparent layer at a wavelength of 590 nm is in a range of 0 to 20 nm, and
a thickness direction retardation Rth of the transparent layer at a wavelength of 590 nm is in a range of −25 to 25 nm.

### Claim 8 (depends on 1)

The laminate according to claim 1,
wherein the transparent layer is formed of two or more layers.

### Claim 9 (depends on 1)

The laminate according to claim 1,
wherein the antistatic agent contains an organic cationic compound.

### Claim 10 (depends on 1)

The laminate according to claim 1,
wherein a content of the antistatic agent is in a range of 0.01% to 10% by mass with respect to a content of a composition of the layer containing the antistatic agent.

### Claim 11 (depends on 1)

The laminate according to claim 1,
wherein the polarizing layer contains an iodine-polyvinyl alcohol complex.

### Claim 12 (depends on 1)

A liquid crystal display device comprising:
a liquid crystal cell; and
the laminate according to claim 1.

### Claim 13 (depends on 12)

The liquid crystal display device according to claim 12,
wherein the transparent layer is disposed between the polarizing layer and the liquid crystal cell.

### Claim 14 (depends on 12)

The liquid crystal display device according to claim 12, further comprising:
a backlight,
wherein the backlight, the laminate and the liquid crystal cell are disposed in this order.

### Claim 15 (depends on 12)

The liquid crystal display device according to claim 12, further comprising:
a backlight,
wherein the backlight, the liquid crystal cell and the laminate are disposed in this order.

### Claim 16 (depends on 12)

The liquid crystal display device according to claim 12,
wherein the liquid crystal cell is of an in-plane switching system.

### Claim 17

A laminate comprising at least:
a polarizing layer;
an adhesive layer;
a transparent layer; and
a layer which contains an antistatic agent, in this order,
wherein a thickness of the transparent layer is in a range of 0.1 to 10 μm,
an equilibrium moisture absorptivity of the transparent layer is 2.0% by mass or less,
a moisture permeability of the transparent layer in terms of 5 μm is in a range of 200 to 5000 g/m2/day, and
the antistatic agent contains an organic cationic compound.