Polarizing plate, front panel of display device, display apparatus, substrate of touch panel, resistive film-type touch panel, and capacitance-type touch panel

Patent metadata

Field	Value
Publication number	US-2017322358-A1
Application number	US-201715657687-A
Country	US
Kind code	A1
Filing date	Jul 24, 2017
Priority date	Jan 27, 2015
Publication date	Nov 9, 2017
Grant date	—

Abstract

Provided is a polarizing plate including a base material, an interlayer, an adhesive layer, and a polarizer layer in this order, in which the base material contains at least a resin film and has a thickness of equal to or greater than 120 μm, the interlayer is a cured layer obtained by curing a thermosetting composition containing a thermally cross-linkable compound in a proportion of equal to or higher than 0.10% by mass with respect to a total amount of solid content of the composition, and a modulus of elasticity Ea of the base material, a modulus of elasticity Eb of the interlayer, and a modulus of elasticity Ec of the adhesive layer satisfy Expression 1: Ea>Eb>Ec. Also provided are a front panel of a display device, a display apparatus, a substrate of a touch panel, a resistive film-type touch panel, and a capacitance-type touch panel.

First claim

What is claimed is:

1 . A polarizing plate comprising:
a base material; an interlayer; an adhesive layer; and a polarizer layer in this order, wherein the base material contains at least a resin film and has a thickness of equal to or greater than 120 μm, the interlayer is a cured layer obtained by curing a thermosetting composition containing a thermally cross-linkable compound in a proportion of equal to or higher than 0.10% by mass with respect to a total amount of solid content of the composition, and a modulus of elasticity Ea of the base material, a modulus of elasticity Eb of the interlayer, and a modulus of elasticity Ec of the adhesive layer satisfy the following Expression 1:
Ea>Eb>Ec   Expression 1.

2 . The polarizing plate according to claim 1 , further comprising:
a resin film on a side of the polarizer layer that is opposite to the base material.

3 . The polarizing plate according to claim 1 ,
wherein the thickness of the base material is equal to or greater than 200 μm and equal to or less than 700 pun.

4 . The polarizing plate according to claim 1 ,
wherein the modulus of elasticity Ea of the base material, the modulus of elasticity Eb of the interlayer, and the modulus of elasticity Ec of the adhesive layer satisfy the following Expression 2:
( Ea+Ec )×3/5> Eb >( Ea+Ec )×2/5  Expression 2.

5 . The polarizing plate according to claim 1 ,
wherein the modulus of elasticity Eb of the interlayer is equal to or higher than 1.5 GPa and equal to or lower than 5.0 GPa.

6 . The polarizing plate according to claim 1 ,
wherein the modulus of elasticity Eb of the interlayer, a modulus of elasticity of E1 of a surface layer portion of the interlayer on the base material side, and a modulus of elasticity E2 of a surface layer portion of the interlayer on the adhesive layer side satisfy the following Expression 3:
E 1> Eb>E 2  Expression 3.

7 . The polarizing plate according to claim 1 ,
wherein a thickness of the interlayer is equal to or greater than 0.01 μm and equal to or less than 5.00 μm.

8 . The polarizing plate according to claim 1 ,
wherein the interlayer contains a compound having a barbituric acid structure.

9 . The polarizing plate according to claim 1 , further comprising:
a cured layer, which is obtained by curing an active energy ray-curable composition, on a side of the base material opposite to the interlayer side.

10 . The polarizing plate according to claim 1 , further comprising:
a decorative layer in a portion on one surface of the base material.

11 . The polarizing plate according to claim 1 ,
wherein the base material includes a quarter wavelength retardation plate.

12 . The polarizing plate according to claim 1 ,
wherein the resin film included in the base material is a laminated film having an acryl-based resin film, a polycarbonate resin film, and an acryl-based resin film in this order.

13 . A front panel of a display device that is the polarizing plate according to claim 1 .

14 . A display apparatus comprising:
the front panel according to claim 13 ; and a display device.

15 . The display apparatus according to claim 14 ,
wherein the display device is a liquid crystal display device.

16 . The display apparatus according to claim 14 ,
wherein the display device is an organic electroluminescence display device.

17 . The display apparatus according to claim 14 ,
wherein the display device is an in-cell touch panel display device.

18 . The display apparatus according to claim 14 ,
wherein the display device is an on-cell touch panel display device.

19 . A substrate of a touch panel that is the polarizing plate according to claim 1 .

20 . A resistive film-type touch panel comprising:
the substrate according to claim 19 .

21 . A capacitance-type touch panel comprising:
the substrate according to claim 19 .

Assignees

• Fujifilm Corp

Inventors

• Ueki Keigo
• Takada Katsuyuki

Classifications

• B32B27/06

  as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)} · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B7/02

  Physical, chemical or physicochemical properties · CPC title

• G02F1/133528

  Polarisers · CPC title

• G06F3/044

  by capacitive means · CPC title