Dai Nippon Printing Co., Ltd.

Kazuki Tanaka

Hiroshi Kojima

Satoshi Goishihara

Akinobu Ushiyama

Takayuki Shimada

Akiko Tomita

Fumihiro Arakawa

Mitsuhiro Hamashima

Runa Nakamura

Satoko Maenishi

Kazuo Matsufuji

There is provided an optical sheet which can prevent problems when it is superimposed on another member. The optical sheet includes: a sheet-like base layer; a light control layer having unit shaped elements arranged in a direction parallel to a sheet surface of the base layer; and a light diffusing layer disposed between the base layer and the light control layer. The light diffusing layer includes a binder resin portion and particles dispersed in the binder resin portion. The particles in the binder resin portion includes a single particle and an aggregate formed of aggregated single particles.

Optical sheet, surface light source device and transmission type display device

An optical sheet having both of an excellent light condensing function and an excellent scratch resistance is provided. An optical sheet includes: a sheet-like main body; at least three or more first unit shaped elements arranged on one surface of the main body; and second unit shaped elements arranged on the one surface of the main body. Each of the second unit shaped elements extend in parallel with in one direction on a sheet surface of the main body. A height Hof each of the first unit shaped elements from the one surface is higher than a height Hof each of the second unit shaped elements. A rate of an area occupied by the first unit shaped elements on the one surface is not more than 10.0%, when observed along a normal direction nd relative to the one surface.

Optical sheet, surface light source device and transmission-type display device

Growing community of inventors

Tokyo-to, Japan

Kazuki Tanaka