Other

Rohm Co., Ltd.

Sekisui Chemical Co., Ltd.

Hitoshi Kobayashi

Takahiko Sawada

Yasumasa Okada

Mitsunori Nagashima

Shoji Nozato

Toshihiro Otsuki

Kenjiro Yamasaki

Eizi Yokoyama

Kazuaki Hiratani

Takao Saito

Jirou Tatemoto

A circuit board (A) includes an insulative substrate (), a conductive pad () formed on the substrate, and a metal () bonded to the pad via a solder layer (). The metal piece () has a welding portion () to which an external-connection terminal () is welded. A gap () is provided between the welding portion () and the substrate (). The welding portion () and the solder layer () are separated by the gap ().

Circuit board

The polarizing plate protection film of the present invention has excellent adhesion with the polarizer because of the polyurethane resin layer formed on the thermoplastic saturated norbornene-type resin film. In addition, blocking of the protection film can be prevented by the PVA layer formed on the polyurethane resin layer. The polarizing plate using the protection film of the present invention is excellent in terms of durability under high temperature and high humidity conditions, and it is suitably used for liquid crystal displays and such.

Protecting film for polarizing plate and polarizing plate

A battery pack includes a vessel a battery mounted in the vessel and a circuit board connected to the battery. An opening is formed on the surface of the vessel A thin-film terminal portion is formed on the circuit board so that it is exposed externally through the opening In this configuration, the battery pack can realize reduction in the weight and thickness and also reduce the production cost.

Battery pack

Polarizer protection film

The present invention provides an improved solution casting method to manufacture, with high productivity, a polysulfone resin film superior in quality including appearance, surface smoothness, transparency and thickness accuracy. A polysulfone resin film is cast using the solution casting method in which a solution of polysulfone resin is cast on a support base to a desired thickness, dried to remove the solvent, and resultant resin film is peeled away from the support piece. The solution of polysulfone resin comprises at least one solvent chosen from among anisole, dioxane or tetrahydropyrane. To shorten the drying time even further, at least one solvent chosen from among acetone, methylethylketone, ethyl acetate, toluene and phenol can be mixed in the casting solution of polysulfone resin. The resultant polysulfone film obtained can be uniaxially stretched to produce a high-quality retardation film with superior optical properties.

Method of manufacturing a polysulfone resin film and a retardation film

Disclosed is a roll blind including a winder fitted around a pin of a roll which is on the side of rolling-in spring housed in the roll, in which one means is formed on the end of said roll and the other means is formed on said winder. After the spring is rolled in by the rotation of the winder, both means are coupled to each other by an engaging member so that the return of the winder is restrained.

Roll blind

An apparatus for hydroponic cultivation comprising a collector tank for a culture liquid and an upright cultivating tube erected on the collector tank. A plurality of plant holder units are mounted on the cultivating tube and are adapted for receiving cultivating liquid therefrom. A cistern is mounted on the cultivating tube at the top thereof and it contains a siphon generating mechanism. An air mixer in the collector tank is connected to an air pump and serves to mix air with culture liquid to feed the same via a supply pipe to the cistern.

Growing community of inventors

Kyoto, Japan

Hitoshi Kobayashi