Murata Manufacturing Co., Ltd.

Takashi Hayashi

Tadashi Nomura

Hideki Kawamura

Masaki Takeuchi

Hajime Yamada

Yukio Yoshino

Daisuke Nakamura

Yoshimitsu Ushimi

Hiroyuki Fujino

Ken-ichi Uesaka

Yasuhiko Ueda

Hiroki Horiguchi

Keiji Horikawa

A power storage device that includes an electrolyte retaining layer between a first internal electrode and a second internal electrode. The electrolyte retaining layer retains an electrolyte. The first internal electrode has a first current collector and a first active material layer. The first active material layer is on a surface of the first current collector, which is closer to the second internal electrode. The second internal electrode has a second current collector and a second active material layer. The second active material layer is on a surface of the second current collector, which is closer to the first internal electrode. At least one of the electrolyte retaining layer, first active material layer, and second active material layer is exposed at the first and second end surfaces of the power storage device.

Power storage device

A piezoelectric thin film resonator having a stabilized temperature characteristic of resonant frequency, a method for manufacturing the same, and a communication apparatus using the piezoelectric thin film resonator are provided. The piezoelectric thin film resonator is provided with a substrate having an opening, first and second insulation films which are provided on one surface of the substrate while covering the opening and which primarily include SiOand AlO, respectively, AlOhaving oxygen defect and being in an amorphous state, and a piezoelectric thin film which is provided on the second insulation film and is sandwiched between electrodes and which primarily includes ZnO.

Method for manufacturing a piezoelectric resonator

Piezoelectric resonator, piezoelectric filter, duplexer, communication apparatus, and method for manufacturing piezoelectric resonator

Growing community of inventors

Shiga-ken, Japan

Takashi Hayashi