Murata Manufacturing Co., Ltd.

Shozo Otera

Jun Endo

Junichi Hashimoto

Toru Tominaga

Takashi Kihara

Yoshihiro Yamaguchi

Yutaka Ishiura

Shiego Mori

A vibration device that includes: a vibration part having a flat plate shape and connected to an operation target on which a user performs a pushing operation; a fixing member; a support part connecting the vibration part and the fixing member; and a vibration film connected to the vibration part and the fixing member, extending across the vibration part and the fixing member in a tensioned state, and constructed to vibrate in a planar direction.

Vibration device

A vibration structure that includes a member having a vibrator that vibrates along a plane direction; a housing that holds the member; and a cushioning material connecting the housing to the member, in which a thickness of the cushioning material in a direction orthogonal to a plane direction of the housing is greater than a length of a gap between the member and the housing.

Vibration structure

A vibration device that includes: a fixing part having a flat plate shape; a vibration part having a flat plate shape, the vibration part being disposed around the fixing part as viewed in a normal direction of the fixing part; a coupling part that couples the vibration part and the fixing part and is constructed to elastically deform, the vibration part constructed to be displaced in an orthogonal direction orthogonal to the normal direction of the fixing part with respect to the fixing part; and a vibration film fixed to the vibration part and the fixing part, the vibration film constructed to vibrate the vibration part in the orthogonal direction with respect to the fixing part when an electric signal is applied to the vibration film.

Vibration device and electronic equipment

A vibration structure that includes a piezoelectric film constructed to deform in a plane direction as a voltage is applied thereto, a frame-shaped member, a vibration portion surrounded by the frame-shaped member in a plan view of the vibration structure, a support portion connecting the vibration portion and the frame-shaped member, and supporting the vibration portion within the frame-shaped member such that the vibration portion vibrates in the plane direction when the piezoelectric film is deformed in the plane direction, a first connection member that connects the piezoelectric film to the vibration portion, and a second connection member that connects the piezoelectric film to the frame-shaped member. Of the connection members, the first connection member is disposed between the center of gravity of the vibration portion and the second connection member.

Vibration structure and vibration generator

A piezoelectric device that includes a film that has a first main surface and a second main surface, and has piezoelectricity; a first substrate; and a first connection member that connects the film to the first substrate. The first connection member is a thermosetting resin, and a curing temperature of the first connection member is lower than a temperature at which the film thermally contracts.

Piezoelectric device, vibration structure and piezoelectric sensor

A vibration structure that includes a film having a first electrode on a first main surface thereof, the first electrode defining a first connection region on the first main surface where the first electrode is not present, and the film is constructed to be deformed in a plane direction when a voltage is applied thereto; a frame-shaped member; a vibration portion surrounded by the frame-shaped member; a first connection member that connects the first main surface of the film to the frame-shaped member at the first connection region; a second connection member that connects the film to the vibration portion; and an extended electrode that is connected to the first electrode.

A vibration structure that includes a film constructed to deform in a plane direction as voltage is applied thereto, a frame-shaped member, a vibration portion surrounded by the frame-shaped member in a plan view of the vibration structure, a support portion connecting the vibration portion and the frame-shaped member and supporting the vibration portion within the frame-shaped member, a first connection member that connects the film and the frame-shaped member, and a second connection member that connects the film to the vibration portion such that the vibration portion vibrates in the plane direction when the film is deformed in the plane direction. The support portion is disposed at a position closer to a center of gravity of the vibration portion than an end portion of the vibration portion when viewed in the plan view.

Vibration structure and electronic device

A vibration device that includes a flat plate that has a first main surface and a second main surface; a vibrator that is configured to vibrate along a first direction parallel to the first main surface; a connecting member that connects the vibrator to the first main surface of the flat plate; a support member having a cavity or a recess in a portion thereof facing the vibrator; and a cushioning material connecting the first main surface of the flat plate to the support member, the cushioning material being disposed so as to not overlap with the vibrator in a plan view of the vibration device. A combined length of the vibrator and the connecting member in a second direction perpendicular to the first main surface of the flat plate is larger than a length of the cushioning material in the second direction.

Vibration device having cushioning material with reduced thickness

A piezoelectric device includes a first region for receiving a pressing operation and a second region located outside of the first region. A piezoelectric element outputs a stronger potential when a pressing operation is applied to the first region than when the pressing operation is applied to the second region.

Piezoelectric device and display device

A breath sensor includes a base body, a first electrode provided on a part of a surface of the base body, a second electrode provided on a part of the surface of the base body, and a covering layer made of a material that does not pass moisture therethrough, the covering layer covering the second electrode with the base body. The base body is preferably made of a material whose surface potential changes due to attachment of moisture to one of a surface of the first electrode and the surface of the base body. A surface potential on a side of the first electrode of the base body changes when a breath containing moisture touches the surface of the first electrode.

Breath sensor, breath sensor unit, and breath sensing method

An insulating base material including conductive patterns includes an insulating base material layer, metal layers provided on the insulating base material layer, and conductive patterns of a conductive material, provided on the metal layers, and an in-plane resistance value of the metal layers is about 0.1 M&#x3a9; or more larger than an in-plane resistance value of the conductive patterns.

Insulating base material with conductive pattern

An actuator device and a manufacturing method for the actuator device with which an outer electrode electrically connected to an inner electrode can be reliably formed even when using a film made of an electrostrictive material. An actuator device includes a plurality of stacked electrostrictive films each of which is made of an electrostrictive material and includes inner electrodes formed on one surface or both surfaces of the film. Lead electrodes are formed to be led out respectively from the inner electrodes toward the outside of the electrostrictive film. At least one cut portion is formed in each of the lead electrodes, and conductive ink is applied to the cut portion. The conductive ink reaches, from the cut portions, the lead electrodes formed on the electrostrictive film.

Actuator device and manufacturing method for actuator device

An electroconductive composition including polystyrene sulfonic acid, poly(3,4-ethylenedioxythiophene), water, an organic solvent having an affinity to water and a polymer having an amide group as a side chain.

Electroconductive composition, composite material and production methods thereof

An actuator device and a method for manufacturing the actuator device, which is formed by stacking and rolling films of electrostrictive material into a cylindrical body and can ensure electrical connection with inner electrodes at both end portions of the cylindrical body. The actuator device is formed by stacking and rolling two films of electrostrictive material into a cylindrical body, the two films each having an inner electrode on one or both surfaces thereof. The cylindrical body has at least one cut portion at each end portion thereof, the cut portion being configured to reach the inner electrode (electrode pattern). By applying conductive ink to each of the cut portions, the conductive ink flows through the cut portions and reaches the inner electrodes on the films. By heat-hardening the conductive ink, it is possible to ensure electrical connection between outer and inner electrodes.

Actuator device and method for manufacturing the actuator device

A laminate-type actuator including a laminate wherein an electrostrictive material layer is wound and laminated in a form of a tube together with first and second electrodes sandwiching the electrostrictive material layer therebetween is provided with high volume efficiency and high reliability. The tubular laminate includes a pair of flat portions facing each other and a pair of curved portions interconnecting the pair of flat portions circumferentially and specifying spaces inside the curved portions. In a cross-section perpendicular to an axis of the laminate, an outer width formed by the pair of flat portions is smaller than an outer width of each of the curved portions, and a distance between the pair of flat portions is smaller than an inner width of each of the curved portions.

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Nagaokakyo, Japan

Shozo Otera