Kuraray Co., Ltd.

Tohoku University

Sharp Corporation

Etsuo Nakazato

Tadahiro Ohmi

Yuichiro Yamada

Tokihiko Shinomiya

Toshiaki Sato

Yasuyuki Shirai

Ichiro Matsuzaki

Mitsuo Matsumoto

Takaharu Kawahara

Takashi Ishizumi

Ikuo Onishi

Yoichi Matsumoto

Tokuo Ikari

Kiwamu Takehisa

Masato Takai

Kazunori Hirose

Masahiro Igaki

Kazuo Baba

Kouichi Takahashi

Nobutoshi Wada

Yoshihiro Oda

Yuhsaku Ajichi

A large liquid crystal display () comprises a light guide plate () arranged on the back side of a liquid crystal panel (). The front surface of the light guide plate () is flat, while the back surface thereof is concave. The upper and lower end faces of the light guide plate () respectively facing hot cathode fluorescent lamps () have a convex shape projecting toward the respective lamps. White light from the fluorescent lamps is incident on the upper and lower end faces of the light guide plate directly or by being reflected by reflectors (), and propagates within the light guide plate while being reflected by the front and back surfaces of the light guide plate. At the front surface of the light guide plate, a part of the white light is directed toward the back side of the liquid crystal panel () by a light guide portion ().

Liquid crystal display and light guide plate

The present invention aims at providing a manufacturing method for an optical sheet capable of manufacturing a thin optical sheet of a uniform thickness distribution with a high thickness accuracy, and high shaping/transferring performances, and an optical sheet manufactured by using the manufacturing method. A manufacturing method for an optical sheet according to the present invention includes passing a resin discharged from a die between a touch roll and a shaping roll under pressure.

Method for producing optical sheet

Method for manufacturing ethylene-vinyl acetate copolymer and apparatus for manufacturing the same

Growing community of inventors

Ibaraki, Japan

Etsuo Nakazato