Denso Corporation

Nisshinbo Micro Devices Inc.

Toyota Jidosha Kabushiki Kaisha

Mirise Technologies Corporation

Hideo Yamada

Tetsuya Enomoto

Naoki Masumoto

Hiroyuki Kuchiji

Tomoya Joke

Teruhisa Akashi

Akihiko Teshigahara

Tomoya Jomori

Atsushi Mizutani

Yuuki Inagaki

Shota Harada

Keitaro Ito

Yoshiyuki Hata

Yuki Ohara

Takahide Usui

Shuji Katakami

Takashi Kakefuda

An electroacoustic transducer includes a vibrating portion, a slit and an elastic film. The vibrating portion has a fixed end portion and a free end portion, and extends as a cantilever from the fixed end portion toward the free end portion along an extending direction orthogonal to a directivity axis to vibrate in a manner that the free end portion moves along the directivity axis. The slit is formed at two ends of the vibrating portion in a width direction orthogonal to the directivity axis and orthogonal to the extending direction. The elastic film is provided to close the slit in an axial direction that is aligned with the directivity axis. The slit includes a wide portion provided on a free end side and a narrow portion narrower than the wide portion. The elastic film is provided to close the wide portion while not closing the narrow portion.

Electroacoustic transducer

A microelectromechanical systems device includes a vibrator and a reinforcing film. The vibrator includes a piezoelectric element configured to convert pressure to an electrical signal. The reinforcing film is configured to reinforce strength of the vibrator. The vibrator further has a groove at which a portion of the reinforcing film is disposed.

Microelectromechanical systems device

An electrostatic actuator includes a fixed electrode and a movable electrode arranged to face the fixed electrode. The movable electrode is configured to be displaceable with respect to the fixed electrode and a fixed portion. An attractive force acts between the movable electrode and the fixed portion. In the electrostatic actuator, a non-linear vibration of the movable electrode when a voltage is applied to the fixed electrode and the movable electrode is reduced by the attractive force acting between the movable electrode and the fixed portion.

Electrostatic actuator and physical quantity sensor

A piezo-electric element includes a piezo-electric element part, a support part, and a stretchable film. The piezo-electric element part includes a piezo-electric film and electrodes between which the piezo-electric film is sandwiched in a thickness direction. The support part supports a peripheral portion of the piezo-electric element part. The stretchable film is provided in an oscillation region located inside of the peripheral portion of the piezo-electric element part. The stretchable film also has a higher elasticity than that of the piezo-electric element part.

Piezo-electric element

Growing community of inventors

Nisshin, Japan

Hideo Yamada