Seiko Epson Corporation

Eiji Osawa

Koji Ohashi

Chikara Kojima

Eiju Hirai

Motoki Takabe

Toshihiro Shimizu

Hironori Suzuki

Naoto Yokoyama

Hikaru Iwai

Kanechika Kiyose

Koji Sumi

Setsuya Iwashita

Takahiro Kamijo

Masashi Kanai

Tomohiro Sayama

Yasuhiro Itayama

Ryoki Watanabe

Yasuyuki Matsumoto

Akira Kuriki

Motohisa Noguchi

Daisuke Honda

Katsuhiro Imai

Yoshihiro Hokari

Kenichi Kurokawa

Keita Kubo

Yashuhiro Itayama

An ultrasound probe includes: an ultrasound device configured to perform at least one of transmission and reception of an ultrasound wave; and a case housing the ultrasound device. The ultrasound device includes a vibration plate and a piezoelectric element disposed at the vibration plate. The case is provided with an opening facing the vibration plate, and a first communication hole that is provided at a position different from a position of the opening and that communicates an internal space of the case with outside of the case. The case includes a sealing mechanism configured to prevent entry of a water droplet from the opening into the internal space.

Ultrasound probe

Provided is a piezoelectric device and an MEMS device whose size can be reduced. The piezoelectric device includes: a first substrate that includes a first surface on which a piezoelectric element and a first electrode coupled to the piezoelectric element are disposed; a second substrate that includes a second surface on which a second electrode configured to be coupled to a control circuit is disposed; and a third substrate that is disposed between the first substrate and the second substrate, and includes a third surface bonded to the first surface and a fourth surface facing the second surface, in which the third substrate has a through hole passing through from the third surface to the fourth surface, and a third electrode provided in the through hole and coupled to the first electrode, and the second electrode is coupled to the third electrode and is electrically coupled to the first electrode via the third electrode.

Piezoelectric device and MEMS device

An ultrasonic device includes a base material that has an opening, a vibration plate that is provided on the base material and closes the opening, and a piezoelectric element that is provided on the vibration plate, in which the vibration plate has a first layer provided on the base material, and a second layer that is disposed between the first layer and the piezoelectric element and that suppresses diffusion of a component contained in the piezoelectric element, and a bending rigidity of the second layer is equal to or larger than a bending rigidity of the first layer.

Ultrasonic device and ultrasonic apparatus

A transport apparatus includes a transport path on which a medium is transported; a transmitter configured to transmit an ultrasonic wave to the medium transported on the transport path; and a receiver configured to receive an ultrasonic wave from the medium, in which the transport path is provided between the transmitter and the receiver, and is provided in a long-distance sound field of an ultrasonic wave transmitted from the transmitter.

Transport apparatus, image scanner, and printer comprising a transmitter, receiver, a long-distance sound field, selecting a beam diameter from a plurality of beam diameters at a short-distance sound field limit distance

An MEMS device includes: a first member; a second member forming a sealed space with the first member therebetween; and a third member disposed between the first member and the second member and joined to the first member and the second member, in which the third member has lower rigidity than rigidity of the first member and the second member, and the third member is provided with a communication portion that establishes communication between the sealed space and an external space.

MEMs device and electronic device

A piezoelectric film includes a substrate having flexibility, and at least two piezoelectric elements provided to the substrate so as to be arranged at intervals of a first dimension along a first direction, the piezoelectric elements are each configured by stacking a first electrode film, a piezoelectric film made of an inorganic material, and a second electrode film along a thickness direction of the substrate, and an area between the piezoelectric elements adjacent to each other along the first direction forms a vibrational region which can be displaced in the thickness direction.

Piezoelectric film, piezoelectric module, and method of manufacturing piezoelectric film

An ultrasonic device includes: a substrate provided with a first opening and a second opening; a support film that is provided on the substrate and blocks the first opening and the second opening; a transmitting piezoelectric film that is provided at a position of the support film which overlaps the first opening when viewed in a thickness direction of the substrate, and that is interposed between a pair of electrodes in the thickness direction of the substrate; and a receiving piezoelectric film that is provided at a position of the support film which overlaps the second opening when viewed in the thickness direction of the substrate, and that is interposed between a pair of electrodes in the thickness direction of the substrate. In the thickness direction of the substrate, a thickness dimension of the transmitting piezoelectric film is larger than a thickness dimension of the receiving piezoelectric film.

Ultrasonic device and ultrasonic measuring apparatus

An ultrasonic device includes: a vibration film provided with a vibration region that is vibratable by a vibration element; and a damper layer that is provided to cover the vibration region of the vibration film. The damper layer has a thickness dimension of 13 &#x3bc;m or larger and 25 &#x3bc;m or smaller.

An ultrasonic sensor includes a first base facing a conveying surface, a transmission section on a first axis tilted relative to the conveying surface and at a far side of the first base for transmitting an ultrasonic wave toward the first axis, and a reception section on the first axis and at a far side of the conveying surface for receiving the ultrasonic wave. The transmission section has a plurality of transmission elements for transmitting the ultrasonic wave arranged to cross the first axis. The first base has a first aperture through which the ultrasonic wave transmitted from the transmission section along the first axis passes. An area of the first aperture is smaller than an area of an ultrasonic wave transmission surface of the transmission section. The transmission section delays driving the transmission elements to converge the ultrasonic wave transmitted from the transmission section toward the first aperture.

Ultrasonic sensor and electronic apparatus

A multi-feed detection device includes a transmission circuit substrate to which an ultrasonic transmitter transmitting an ultrasonic wave is installed, and an ultrasonic receiver receiving the ultrasonic wave. The ultrasonic transmitter has arrayed ultrasonic transmission elements and transmits ultrasonic waves with different phases from the ultrasonic transmission elements to transmit the ultrasonic waves in a direction diagonally intersecting a thickness direction of the transmission circuit substrate.

Multi-feed detection device and electronic device

A multi-feed detection device includes a transmission circuit substrate on which an ultrasonic transmitter transmitting an ultrasonic wave is installed, and an ultrasonic receiver receiving the ultrasonic wave. The ultrasonic transmitter transmits the ultrasonic wave in a direction intersecting a thickness direction of the transmission circuit substrate and at least one of the ultrasonic transmitter and the ultrasonic receiver has a plurality of ultrasonic elements.

Multi-feed detection device, multi-feed detection method, and electronic device

A media type determination device includes: a light detector that detects light from a target object; a sensor that transmits an ultrasonic wave to the target object and performs an ultrasonic measurement for receiving the ultrasonic wave transmitted through the target object; and one or a plurality of processors. The one or plurality of processors are programmed to execute a method including: acquiring light information corresponding to the light from the target object, from the light detector; acquiring ultrasonic wave information corresponding to an ultrasonic wave via the target object from the sensor, and determining a type of target object based on the light information and the ultrasonic wave information.

Media type determination device, electronic apparatus, and media type determination method

An ultrasonic device includes a substrate that is provided with an opening and a partition wall surrounding the opening, a vibration portion that closes one end side of the opening, and a piezoelectric element that is provided in the vibration portion, in which, in a case where an opening width dimension of the opening is indicated by W, and a thickness dimension of the substrate is indicated by H, a ratio W/H is 0.66 to 0.92.

Ultrasonic device, ultrasonic probe, and ultrasonic apparatus

A vibrating plate is provided between a substrate and a piezoelectric element formed of electrodes and a piezoelectric layer and includes a first layer which is formed of a silicon oxide and a second layer which is formed of a ceramic having a Young's modulus larger than that of the silicon oxide. Under the condition in which the following expression (1) has a constant value, where in the expression (1), E, d, E, and drepresent Young's modulus of the first layer, the thickness thereof, Young's modulus of the second layer, and the thickness thereof,&#x2003;&#x2003;(1)when the combination of dand dwhich sets the value of the following expression (2) in a range of from the minimum value to +2% thereof is represented by (D, D),&#x2003;&#x2003;(2)the thickness of the first layer and the thickness of the second layer are represented by Dand D.

Vibrating plate structure and piezoelectric element application device

A piezoelectric device includes a piezoelectric element including a first electrode, a second electrode, and a piezoelectric layer provided between the first electrode and the second electrode, and a driving system that drives the piezoelectric element by applying voltage to the first electrode and the second electrode, in which the driving system drives the piezoelectric element at a maximum voltage that is lower than a voltage at which a tunnel current or a Poole-Frenkel current starts to be generated in the piezoelectric element.

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Chino, Japan

Eiji Osawa