Hitachi Cable, Inc.

Hiroshi Yamanobe

Seigi Aoyama

Masato Ito

Takaaki Ichikawa

Katsuo Endo

Tsutomu Komori

Hiroshi Okikawa

Masahiko Kobayashi

Takayuki Tsuji

Hajime Nishi

Toshiyuki Horikoshi

Shinsuke Murano

Takeshi Usami

Noboru Nakakuki

Hidenori Kobayashi

A Pb-free Sn-based material part of a wiring conductor is provided at least at a part of its surface, and the Sn-based material part includes a base metal doped with an oxidation control element. The oxidation control element is at least one element selected from a group consisted of P, Ge, K, Zn, Cr, Mn, Na, V, Si, Ti, Al, Li, Mg and Ca. The wiring conductor is reflow processed, such that at least one of the Sn and the oxidation control element is diffused to form an alloy.

Wiring conductor, method for fabricating same, terminal connecting assembly, and Pb-free solder alloy

An antenna having an antenna element bent in a predetermined shape. The antenna element has a plurality of line conductors that are arranged in parallel and are sandwiched by two insulation films. A method of making an antenna has the steps of: arranging in parallel a plurality of line conductors, each of which having a width of 0.04 mm or less, at intervals of 10 times or more the width of each of the line conductors; discharging continuously the plurality of line conductors such that visibility of the line conductors is reduced; and sandwiching continuously the discharged line conductors by planar transparent insulation films with a sticking or adhesion layer to have an antenna element.

Antenna and method of making the same

A flexible flat cable has a single conductor or a plurality of conductors, juxtaposed to each other or one another, which are sandwiched between a pair of plastic films with an adhesive to form an integral structure. The plastic films with an adhesive have a modulus of longitudinal elasticity of not less than 300 kg/mm and an elongation of not less than 20%. The plastic films are formed of a polyimide. The adhesive is formed of an epoxy having a glass transition temperature Tg of 80&deg; C. or above, and the 180&deg; peel strength between the adhesive and the single conductor or the plurality of conductors is not less than 0.5 kg/cm.

Heat-resistant, flex-resistant flexible flat cable and process for producing the same

In FFC1 integrated by sandwiching flat type conductors between plastic films with adhesives, wherein the conductors are formed of pure copper or a copper alloy having a wiredrawing draught of at least 95% and an elongation of at least 5%, and the plastic films with adhesives are formed of one having a modulus of longitudinal elasticity of at least 280 kg/mm and an elongation of at least 80%, and the 180&deg; peel strength between the adhesives and the conductors is made to be at least 0.8 kg/cm. As a result, even if the number of conductors is increased than the conventional FFC, bending-resistant characteristic equal to or higher than the conventional FFC can be exhibited.

Bending-resistant flexible flat cable and production process thereof

Growing community of inventors

Hitachi, Japan

Hiroshi Yamanobe