Sumitomo Chemical Company, Limited

Sumitomo Bayer Urethane Co., Ltd.

Masaru Honda

Koji Higashi

Shigeo Hozumi

Shinichiro Kitayama

Yukio Yasunori

Kayoko Ueda

Toshiaki Imokawa

Toshihiko Tominaga

Yoshito Harada

Takanori Chiba

Katsumi Nagayasu

Yoshinori Kihara

Takuya Sairai

Naoyasu Nougi

Eckehard Weigand

The present invention provides a transflective film comprising a polymer film having an in-plane phase retardation value of about 30 nm or less and a transflective layer made of an inorganic compound, wherein the transflective layer is coated on the polymer film and a reflectance of the transflective film is from about 10% to about 95%. When an absorption-type polarizer is laminated to the polymer film side of the transflective film, a transflective polarizer is provided. When a reflection-type polarizer is laminated to the transflective layer side of the transflective film, a transflective polarizer used in a system improving luminance is provided. Using these transflective polarizers, a polarizing light source device and a transflective liquid crystal display device are provided.

Transflective film, transflective polarizer, and polarizing light source device and liquid crystal display device using the same

It is aimed to provide a laminated polarizing film having an antistatic function, where static electricity occurs less even if the protective film is peeled off to bond the laminated polarizing film to a liquid crystal cell, and where defects such as bright spots are not caused in display. The aim is achieved by a laminated polarizing film, wherein a reflective polarizing film and an absorptive polarizing film are laminated, and an antistatic layer is further laminated at least either on the outside of the reflective polarizing film or between the reflective polarizing film and the absorptive polarizing film.

Laminated polarizing film

A polarizer is provided which comprises a reflection type polarizer and a dichroic polarizer, each of which is placed so that polarizing transmission axes of the reflection type polarizer and the dichroic polarizer are coincident with each other on the same optical path, wherein the dichroic polarizer has a transmittance &lsqb;T(AP)(&lgr;)&rsqb; of about 44% or more and a polarizing coefficient &lsqb;P(AP)(&lgr;)&rsqb; of about 50.0% or more or wherein the dichroic polarizer has a luminous correction transmittance &lsqb;Y(AP)&rsqb; of about 44% or more and a luminous correction polarizing coefficient &lsqb;P(AP, y)&rsqb; of about 50.0% or more.

Polarizer, polarizing light source device and liquid crystal display

Filter for liquid crystal display device

An optical filter for a liquid crystal display device, consisting of a polymer film which has two types of layers having different refractive index which exist alternately in a laminated state, in which a difference of refractive index between two types of layers is in the range between 0.01 and 0.1, an average thickness of each layer is at least 0.8 .mu.m and less than 2 .mu.m, and a thickness of the polymer film is in the range between 10 to 300 .mu.m, which filter can widen an angle of view of the liquid crystal display is greatly without the improvement of the liquid crystal cell, change of an addressing system or modification of the liquid crystal itself.

Light control sheet and liquid crystal display device comprising the same

Rigid polyurethane foams are obtained by reacting an isocyanate-reactive component containing at least two isocyanate-reactive hydrogen atoms, having a molecular weight of from 32 to 10,000 or a mixture thereof, with a polyisocyanate composition comprising

Process for manufacturing rigid polyurethane foam

A novel magnetic recording medium consisting of a base material, magnetic particles and a specific polyurethane-based binder containing incorporated sulphonate groups, a process for preparing such a magnetic recording medium which comprises coating a base material with a coating material comprising (i) an organic solvent, (ii) a polyurethane binder containing chemically incorporated sulphonate groups and (iii) magnetic particles and the most preferred binder composition therefor comprising a hexandiol-(1,6)-polycarbonate-based polyurethane.

Magnetic recording medium, a process for preparing a magnetic recording

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Niihama, Japan

Masaru Honda