Nitto-denko Corporation

Nitto Denki Corporation

Takezou Hatanaka

Shuuji Yano

Akihiro Nishida

Hiroe Maeda

Takashi Kondou

Takuya Matsunaga

Junji Yoshida

Takayuki Shigematsu

Yasunori Sugihara

Yukiko Azumi

Yuuki Kagehisa

A polarizing plate of the present invention comprising a polarizer and a protective film provided on at least one surface thereof with an adhesive layer, wherein the protective film comprises (A) a thermoplastic resin having a substituted and/or non-substituted imide group in a side chain and (B) a thermoplastic resin having a substituted and/or non-substituted phenyl group, and nitrile group in a side chain, and the adhesive layer comprises a polyurethane adhesive containing a urethane polyol and an isocyanate crosslinking agent. The polarizing plate exhibits good resistance moisture.

Polarizing plate, adhesive for polarizing plate, optical film and image display device

A light-diffusing sheet includes a transparent film and a light-diffusing layer formed on at least one side of the transparent film. The transparent film contains a thermoplastic resin having a substituted and/or non-substituted imido group in a side chain, and a thermoplastic resin having a substituted and/or non-substituted phenyl group and nitrile group in a side chain, and the surface with the minute unevenness has an average height-depth spacing (Sm): Sm&#x2266;80 &#x3bc;m, a center-line average surface roughness (Ra): Ra&#x2266;0.25 &#x3bc;m and a ten-point average surface roughness (Rz): Rz&#x2266;9Ra.

Light-diffusing sheet, optical element and image display

A light-diffusing sheet includes a transparent film and a light-diffusing layer formed on at least one side of the transparent film. The light-diffusing layer is composed of a resin coating layer having a rough surface. The transparent film contains a thermoplastic resin having a substituted and/or unsubstituted imide group at a side chain and a thermoplastic resin having a substituted and/or unsubstituted phenyl group and a nitrile group at a side chain.

Light-diffusing sheet, optical element and image viewing display

An impact test apparatus includes a holding device for holding a test piece at an arbitrary holding force, an impact applying device for applying an impact force to the test piece held by the holding device, a force sensor for sensing the impact force applied to the test piece by the impact applying device, a high-speed camera for detecting a displacement of the test piece when applied with the impact force by the impact applying device, and an output device for synchronizing a signal from the force sensor with a signal from the high-speed camera and outputting an impact stress-strain characteristic curve when the impact force is applied to the test piece.

Impact test apparatus and impact test method

A light diffusing sheet of a structure in which a light diffusing layer is formed on at least one surface of a transparent film, the light diffusing layer including a resin coat layer having a minute unevenness shape and a low refractive index layer having a refractive index lower than that of the resin coat layer on the surface having a minute unevenness shape thereof, whereby the sheet can retain antiglare property, shows almost no white blurring to be recognized due to surface scattering, exhibits almost no birefringence, and is excellent in adherence and durability even when applied to a high definition LCD.

Growing community of inventors

Ibaraki, Japan

Takezou Hatanaka