Murata Manufacturing Co., Ltd.

Konica Minolta Opto, Inc.

Tadashi Yoda

Yasuhiro Okamoto

Toshio Nishimura

Masanaga Nishikawa

Tomoyuki Yuasa

Koki Sai

Kazuhiro Mimura

Seita Takahashi

A quartz crystal resonator unit that includes a substrate, a lid, and an adhesive member that joins the substrate and the lid to each other to form an enclosure; a quartz crystal resonator disposed in the enclosure; and an adjustment member on the quartz crystal resonator and that includes a material whose volatilization amount per unit time and unit volume increases as humidity increases.

Piezoelectric resonator unit

A quartz crystal resonator that includes a substrate including a vibration portion, a frame portion that surrounds the vibration portion, and first to fourth coupling portions that couple the vibration portion and the frame portion to each other; and first and second excitation electrodes. An intersecting point of diagonal lines of a quadrangle formed by first to fourth connection portions is located on the positive side of the z axis relative to the x axis.

Quartz crystal resonator and quartz crystal resonator unit

An electromechanical conversion element having high connection reliability and an actuator equipped with the electromechanical conversion element. The electromechanical conversion element includes: a displacement part capable of expanding and contracting by application of voltage and having electrode forming faces and an adhesion face which are disposed adjacent to each other; and external electrodes on the electrode forming faces, in which lead electrodes for applying voltage to the displacement part are bonded to bonding regions provided in the external electrodes, and a driven member capable of being driven by the expansion and contraction of the displacement part is bonded to the adhesion face by an adhesive. The electromechanical conversion element further includes bleed flow blocking parts on the electrode forming faces at points closer to the adhesion face than ends of the bonding regions located on the same side as the adhesion face.

Electromechanical conversion element and actuator

Growing community of inventors

Nagaokakyo, Japan

Tadashi Yoda