Nitto-denko Corporation

Yuusuke Toyama

Masayuki Satake

Atsushi Yasui

Tomoyuki Kimura

Minoru Miyatake

Takeharu Kitagawa

Shusaku Goto

Takashi Kamijo

Tomohiro Mori

Shinichi Inoue

Mizue Nagata

Toshitsugu Hosokawa

Masakuni Fujita

Takaaki Ishii

Yutaka Moroishi

Akiko Ogasawara

Fumiko Nakano

Shinsuke Akizuki

Arata Fujihara

Shuuji Yano

Kenji Yoda

Takashi Shimizu

Hiroaki Mizushima

Yuuji Saiki

Kentarou Kobayashi

Tsuyoshi Chiba

Masatoshi Tomonaga

Kohei Yano

Kentarou Yoshida

Teppei Niino

Nobuyuki Haida

Naotaka Kinjou

Mizue Yamasaki

Naoyuki Nitta

Toshisugu Hosokawa

Kayo Oohira

A pressure-sensitive adhesive composition is disclosed making it possible that even when a polarizing film and a transparent conductive layer are laminated over each other to interpose a pressure-sensitive adhesive layer there between, this pressure-sensitive adhesive layer is formed as a pressure-sensitive adhesive layer capable of restraining the transparent conductive layer from being corroded, and further restraining a rise in the surface resistance of the transparent conductive layer, and a deterioration in the external appearance of this layer. Also disclosed are a pressure-sensitive adhesive layer made from the pressure-sensitive adhesive composition, a pressure-sensitive-adhesive-layer-attached polarizing film, and an image display device using the pressure-sensitive-adhesive-layer-attached polarizing film. The pressure-sensitive adhesive composition includes a (meth)acryl-based polymer (A) and a conductive agent (B) having a molecular weight of 380 or more.

Pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive-layer&#x2014;attached polarizing film, and image display device

An object of the present invention is to provide a pressure-sensitive-adhesive composition for forming a pressure-sensitive-adhesive layer capable of keeping a high endurance even when this layer is exposed to a heated environment or allowed to stand still for a long term. Another object of the invention is to provide a pressure-sensitive-adhesive layer formed from the pressure-sensitive-adhesive composition, a pressure-sensitive-adhesive-layer-attached polarizing film having the pressure-sensitive-adhesive layer, and an image display device including the pressure-sensitive-adhesive-layer-attached polarizing film. The composition is a pressure-sensitive-adhesive composition including a (meth)acryl-based polymer, and an oligomer epoxy-group-containing silane coupling agent having an epoxy equivalent of 250 to 600 g/mol.

Pressure-sensitive-adhesive composition, pressure-sensitive-adhesive layer, pressure-sensitive-adhesive-layer-attached polarizing film, and image display device

A pressure-sensitive adhesive layer attached polarizing film of invention includes a polarizing film; and a pressure-sensitive adhesive layer provided on the polarizing film, wherein the polarizing film comprises a polarizer and a transparent protective film provided on only one side of the polarizer, the pressure-sensitive adhesive layer is provided on a side of the polarizer opposite to the side on which the transparent protective film is provided, and the pressure-sensitive adhesive layer is made from a pressure-sensitive adhesive composition including a (meth)acryl-based polymer (A), an onium-anion salt (B1), and an alkali metal salt (B2). The pressure-sensitive adhesive layer attached polarizing film has a pressure-sensitive adhesive layer possessing an antistatic function and satisfactory durability even after a humidity test under severe conditions and is less prone to degradation of optical properties even after a humidity test under severe conditions.

Pressure-sensitive adhesive layer attached polarizing film and image display

Provided are an acrylic pressure-sensitive adhesive composition including a (meth)acryl-based polymer and a phosphonic acid compound of formula (1): 

Acrylic pressure-sensitive adhesive composition, acrylic pressure-sensitive adhesive layer, pressure-sensitive adhesive layer-attached substrate film, laminate, and image display device

A pressure-sensitive adhesive layer-attached polarizing film of the invention includes: a polarizing film; and a pressure-sensitive adhesive layer provided on the polarizing film, wherein the polarizing film includes a polarizer and a transparent protective film provided on only one side of the polarizer, the pressure-sensitive adhesive layer is provided on a side of the polarizer where the transparent protective film is absent, and the pressure-sensitive adhesive layer is made of a pressure-sensitive adhesive composition containing a (meth)acryl-based polymer (A) and an alkali metal salt (B). The pressure-sensitive adhesive layer-attached polarizing film has a pressure-sensitive adhesive layer with an antistatic function and satisfactory durability and whose optical properties are less likely to be degraded.

Pressure-sensitive adhesive layer-attached polarizing film and image display

There is provided a thin polarizing plate with a pressure-sensitive adhesive layer hardly warping. A polarizing plate with a pressure-sensitive adhesive layer of the present invention includes: first pressure-sensitive adhesive layer, a protective film, and a polarizing film in the stated order, wherein: the polarizing film has a thickness of 13 &#x3bc;m or less; a thickness ratio between the protective film and the polarizing film (thickness of the protective film/thickness of the polarizing film) is from 1.5 to 9.0; and a creep amount when a load of 500 g is applied to the first pressure-sensitive adhesive layer for 1 hour is from 20 &#x3bc;m/h to 300 &#x3bc;m/h.

Polarizing plate with pressure-sensitive adhesive layer

A pressure-sensitive adhesive layer-bearing polarizing film for a transparent conductive coating, includes an iodine-based polarizing film and a pressure-sensitive adhesive layer placed on at least one side of the polarizing film, wherein the iodine-based polarizing film includes an iodine-based polarizer containing 1 to 14% by weight of iodine and/or iodide ions and having a thickness of 2 to 40 &#x3bc;m and a transparent protective film provided on at least one side of the polarizer and having a water-vapor permeability of 1,000 g/(m&#xb7;24 hours) or less at 60&#xb0; C. and 90% R.H., and the pressure-sensitive adhesive layer has a saturated water content of 3.5% by weight or less at 60&#xb0; C. and 90% R.H.

Pressure-sensitive adhesive layer-bearing polarizing film for transparent conductive coating, laminate, and image display device

A method for producing a pressure-sensitive adhesive layer-carrying optical film includes the step of applying, over the optical film, a coating liquid for anchor layer comprising a mixed solvent comprising 10 to 100% by weight of water and 90 to 0% by weight of an alcohol, and a polyoxyalkylene-group-containing polymer so as to give an applied-coat thickness before drying of 20 &#x3bc;m or less; and next drying the workpiece under drying conditions satisfying both of the following requirements (1) and (2):

Method for producing pressure-sensitive adhesive layer-carrying optical film

A pressure-sensitive adhesive layer for optical applications of the present invention is made from a pressure-sensitive adhesive for optical applications including a base polymer (A), and the pressure-sensitive adhesive layer for optical applications includes iodine and/or iodide ions (B). The pressure-sensitive adhesive layer for optical applications has an antistatic function and can satisfy a durability.

Pressure-sensitive adhesive layer for optical applications, pressure-sensitive adhesive layer-attached optical film, and image display device

A pressure-sensitive adhesive composition, comprising:

Adhesive agent composition, adhesive agent layer, polarizing plate provided with adhesive agent layer, and image formation device

Adhesive composition, adhesive layer, polarizing film having adhesive agent layer, and image forming device

Provided is a polarizing plate with a pressure-sensitive adhesive layer which is excellent in reliability of optical properties and durability of pressure-sensitive adhesion. The polarizing plate with a pressure-sensitive adhesive layer comprises a polarizing film and a pressure-sensitive adhesive layer provided directly on at least one surface of the polarizing film. The pressure-sensitive adhesive layer comprises a pressure-sensitive adhesive composition containing a pressure-sensitive adhesive polymer, and an amount of an acid component in a total monomer component constituting the pressure-sensitive adhesive polymer is less than 8 wt %.

Polarizing plate with a pressure-sensitive adhesive layer and image display device

The present invention provides a liquid crystal panel in which warping is controlled. The liquid crystal panel includes a liquid crystal cell, a first polarizing filmdisposed on a viewer side of the liquid crystal celland a second polarizing filmdisposed on a side of the liquid crystal cellopposite to the viewer side. A thickness (d) of the first polarizing filmis smaller than a thickness (d) of the second polarizing film

Liquid crystal panel and liquid crystal display apparatus

Growing community of inventors

Ibaraki, Japan

Yuusuke Toyama