Nitto-Denko Corporation

Nitto Europe N.v.

Yuuzou Akada

Yoshimasa Sakata

Tadaaki Harada

Hidetoshi Yoshitake

Kiichi Shimodaira

Toshiyuki Umehara

Nobuyoshi Yagi

Yoshiaki Mitsuoka

Walter Eevers

Ann Issaris

Edwin Thys

An optical resin sheet includes a cured resin layer containing glass fiber, wherein the ratio of the elastic modulus of the glass fiber to the elastic modulus of a cured resin material, which forms the cured resin layer, is 25 or more. With the thus arranged optical resin sheet, stress is applied to the glass fiber, thereby reducing the phenomenon of occurrence of birefringence, and when it is applied to a display device, there is achieved a significantly small light leakage in an oblique direction. The optical resin sheet is capable of achieving excellent display quality of an image display device such as a liquid crystal display device, as well as keeping the coefficient of thermal expansion lower and the mechanical strength higher.

Optical resin sheet and liquid crystal cell substrate including the same, liquid crystal display device, substrate for an image display device, and image display device

The present invention relates to a water-permeable adhesive tape for processing semiconductor wafers and/or semiconductor related materials comprising at least one base film and an adhesive, wherein said at least one base film possesses perforations and has a cavity ratio of 3.0 to 90%. The water-permeable adhesive tape is in particular suitable for dicing semiconductor wafers and/or semiconductor related materials using laser technology.

Water-permeable adhesive tape

A resin sheet that is unlikely to be affected by heat and allows prevention of the occurrence of a crack is provided. A glass fiber cloth-like material is dipped into an epoxy resin solution and subjected to curing, thereby obtaining an epoxy resin-based sheet including the glass fiber cloth-like material. The resin sheet has a haze value of 10% or lower, and preferably, has a light transmittance of 88% or higher, an in-plane retardation of not more than 2 nm, a retardation in a thickness direction of 40 nm, and a surface roughness of not more than 2 &#x3bc;m.

Resin sheet, liquid crystal cell substrate comprising the same

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Ibaraki, Japan

Yuuzou Akada