Alps Electric Co., Ltd.

Ken Yamamura

Takashi Shirakawa

Shinji Murata

Toshifumi Nakatani

Noboru Tsushima

Satoru Sasaki

Mitsuru Tokuta

Toshiya Endoh

Akinori Takahashi

In order to provide an electronic circuit board capable of preventing the breakdown voltage of a capacitor element from dropping and excellent in high frequency performance, a positive type photoresist is spin-coated over the surface of an alumina substrate and is exposed to light and developed to form an insulating layer partially, followed by formation of a capacitor element by successively stacking a lower electrode, a dielectric layer and an upper electrode over this insulating layer, further followed by formation of a resistance element, an inductor element and a transmission line, each in a filmy state, over the surface of the alumina substrate.

Thin-film capacitor element and electronic circuit board on which thin-film capacitor element is formed

A thermal head including a temperature keeping layer disposed on a substrate, a plurality of heat generating elements formed on the temperature keeping layer, a plurality of individual electrodes connected to the corresponding heat generating elements, a common electrode connected to the heat generating elements, respectively. Each heat generating element includes a heat generating portion formed between one of the individual electrodes and the common electrode. Each of the individual electrodes and the common electrode have a dual layered structure including a lower electrode and an upper electrode, the lower electrode being formed between the temperature keeping layer and one of the heat generating elements, and the upper electrode being formed above the heat generating element.

Thermal head

Growing community of inventors

Iwate-ken, Japan

Ken Yamamura