Sekisui Kagaku Kogyo Kabushiki Kaisha

Sekisui Chemical Co., Ltd.

Hiroshi Ogawara

Makoto Fujigami

Akihito Kubo

Fumio Nishitani

Tomohiro Yokota

Seiichirou Honda

Mutsumi Fukuda

Toshiharu Matsumiya

Kazuo Sakamoto

Shozo Shiraishi

Tatsuhiko Kawaoka

Hiroshi Honda

A light adjusting sheet for a planar lighting device includes a plurality of convex and concave ridges or regions arranged alternately and approximately parallel to each other on one surface. Each of the convex regions and concave regions are formed by two flat surfaces. The ridges may have a cross section of a sine curve. Another light adjusting sheet consists of a plurality of single sheets each having the above configuration, stacked together. A planar lighting device includes the light adjusting sheet of the above configuration, wherein peak lines of the convex ridges and bottom lines of the concave ridges are arranged to make a predetermined angle with an axis of a linear light source. The liquid crystal display includes a liquid crystal display element placed on front of the planar lighting device of the above configuration.

Light adjusting sheet for a planar lighting device and a planar lighting

A light adjusting sheet for a planar lighting device includes a plurality of convex and concave streaks arranged alternately and approximately parallel to each other on one surface. The streaks may have a cross section of a sine curve. Another light adjusting sheet consists of a plurality of single sheets each having the above configulation, stacked together. A planar lighting device includes the light adjusting sheet of the above configulation, wherein peak lines of the convex streaks and bottom lines of the concave streaks are arranged to make a predetermined angle with an axis of a linear light source. The liquid crystal display includes a liquid crystal display element placed on front of the planar lighting device of the above configulation.

Light adjusting sheet having a sinusoidal surface and a non-optically

Liquid crystal display using a plurality of light adjusting sheets

A method of connecting plastic tubes by high-frequency heating comprising preparing an electrode block having at least two electrode members each having annular bores aligned with each other, the electrode block including at least one insulator interposed between the electrode members, the insulator having a bore aligned with those of the electrode members, inserting an end portion of one tube into the one electrode member and an end portion of the other tube into another electrode member so that both tube ends keep contact with each other in the bore of the insulator, and applying a high frequency voltage between the electrode members.

Method of connecting plastic tubes using high frequency dielectric

A blood-partitioning composition comprising a mixture of

Composition for partitioning blood components

Growing community of inventors

Otsu, Japan

Hiroshi Ogawara