Abstract: An operation detection device includes an operation target that accepts contact operation, an operation detection unit that detects contact operation on the operation target as a voltage, a detection unit that detects a frequency of a change in the voltage; and a determination unit that determines a mode of operation of a living body performed on the operation target based on the frequency detected by the detection unit.

Abstract: A headphone is disclosed that includes a headband and a pair of sound emitting units. The headband is a band-shaped body that is curved in an arch shape. The sound emitting units each have a flat shape and are disposed at both ends of the headband. The sound emitting units each include a piezoelectric actuator of a flat film shape disposed on a flat plane of a sound emission housing of a flat shape. The piezoelectric actuator includes a piezoelectric film made of an organic piezoelectric material such as PLLA, and first and second driving conductors disposed on opposing principal planes of the piezoelectric film.

Abstract: A fluid storage device includes a container and a torsion sensor. The container stores a fluid to be agitated. The torsion sensor has a substrate and detects torsion of the substrate. The substrate has a first end inserted in the container and a second end fixed to the container or a housing.

Abstract: A pressing force sensor that includes a flat membrane piezoelectric element and a support. The flat membrane piezoelectric element includes a piezoelectric sheet having a piezoelectric constant. A first electrode is formed on a first main surface of the piezoelectric sheet and a second electrode is formed on a second main surface thereof. Long directions of the first electrode and the second electrode and a uniaxial stretching direction of the piezoelectric sheet form an angle of 45°. An opening portion having an elliptical section is formed on the support. The flat membrane piezoelectric element abuts the opening portion of the support. The support and the flat membrane piezoelectric element are disposed such that the opening portion is included within an area of the second electrode.

Abstract: A touch panel having a structure in which first capacitance detection conductors, a first insulating layer, second capacitance detection conductors, a second insulating layer, a shied conductor, a third insulating layer, and backside wiring conductors are disposed in this order in a thickness direction. The second capacitance detection conductors and the backside wiring conductors are connected through conductors formed near ends of the second capacitance detection conductors in a longitudinal direction. The first capacitance detection conductors are extracted to a predetermined side by first extraction conductors, and the second capacitance detection conductors are extracted to the predetermined side by the through conductors, the backside wiring conductors, and second extraction conductors.

Abstract: One or more toner bottles are provided for supplying toners to development apparatuses. The toner bottles each include bottle portions and displacement sensors. The bottle portions accommodate the toners and are rotated by a drive force of a drive source. The displacement sensors are positioned on sides of the bottle portions and detect deflection amounts of the sides of the bottle portions to determine how much toner is remaining in each toner bottle.

Abstract: A panel of an input terminal that includes a base substrate having a first principal surface and a second principal surface opposing each other; a piezoelectric film having a third principal surface and a fourth principal surface opposing each other and made of a uniaxially stretched polylactic acid; and rigid bodies disposed at end portions of the first principal surface and the second principal surface of the base substrate so as to oppose each other across the base substrate and partially prevent a deformation caused by a twist of the base substrate. First displacement detection electrodes are formed on the first principal surface of the piezoelectric film and divide the first principal surface into four. Second displacement detection electrodes are formed on the second principal surface of the piezoelectric film and oppose the first displacement detection electrodes on the first principal surface.

Abstract: An electronic device with pressing input function includes a substantially rectangular parallelepiped-shaped housing. A pressure sensor, a display panel, a protective member, and an arithmetic circuit module are disposed in the housing. In the display panel, a front polarizing plate is disposed on a front face of a liquid crystal panel. The pressure sensor includes piezoelectric films having birefringence, and electrodes formed on opposed faces of one of the piezoelectric films. The pressure sensor is disposed between the liquid crystal panel and the front polarizing plate. The piezoelectric films are arranged such that their uniaxial drawing directions are orthogonal to each other.

Abstract: A cryopump system includes: a plurality of cryopumps; a plurality of compressor units arranged to operate in parallel in accordance with a control output, respectively, to supply refrigerant gas to the plurality of cryopumps; and a cryopump controller operative to determine the control output for each of the plurality of compressor units. The cryopump controller adjusts a preset value for at least one of the compressor units, the preset value being utilized to determine the control output, so that operation statuses of the respective compressor units are substantially equalized.

Abstract: A tactile sense presentation device that includes a film member which deforms in a planar direction when a voltage is applied thereto, a diaphragm fixed to the film member in a state where a bending stress is applied to the diaphragm, a touch detector which detects a touch operation, and a voltage driver which applies a drive signal to the film member when the touch detector detects the touch operation.

Abstract: A touch input device includes a touch panel, a press detection signal generating unit and a touch detection signal generating unit. The touch panel is formed by laminating a piezoelectric sensor and a capacitive sensor. The piezoelectric sensor is connected to the press detection signal generating unit, and the capacitive sensor is connected to the touch detection signal generating unit. The piezoelectric sensor includes a piezoelectric film, and first and second press detecting conductors disposed with the piezoelectric film sandwiched therebetween. The piezoelectric film is disposed such that a polarity of electric charges produced by a press in the piezoelectric film, and a polarity of excited electric charges produced in the piezoelectric film when the capacitive sensor detects a touch become reverse polarities.

Abstract: An operation input device has a housing including a concave portion in which an information display device is accommodated. A piezoelectric element of a flat film shape and a control IC connected to the piezoelectric element are built in a base portion of the housing. The control IC is connected to a device IC of the information display device. When a user's finger touches an attachment region of the piezoelectric element in the base portion of the housing, a detection signal corresponding to the touch position and a pressing amount is outputted from the piezoelectric element. The control IC generates operation information based on the detection signal, and outputs the operation information to the device IC of the information display device. The device IC shows display corresponding to the operation information.

Abstract: A sensor device that includes a film composed of, for example, PLLA; and electrodes for extracting an output voltage from the PLLA film. The electrodes are located on main surfaces of the PLLA film such that the electrodes face each other with at least a portion of the PLLA film being interposed therebetween. The PLLA film has a first side which is fixed, and a second side which is opposite to the first side and is a movable portion. Each of the electrodes is configured to extract an output voltage resulting from an effect of piezoelectric constant d14 provided by shear deformation caused by displacement of the movable portion in a direction parallel to the main surfaces of the PLLA film, whereby an operation involving friction or the like can be sensed.

Abstract: A piezoelectric speaker device that includes an organic polymer piezoelectric film, at least one pair of electrodes provided in contact with the piezoelectric film and the at least one pair of electrodes including a user-side electrode on a first side of the piezoelectric film, an insulation layer on the user-side electrode, a flaw detection electrode line on the insulation layer, and a detection circuit configured to detect whether the flaw detection electrode line is in a normal electric conduction state.

Abstract: A displacement detection device includes a piezoelectric sensor. The piezoelectric sensor is provided with a piezoelectric sheet on both principal surfaces of which detection electrodes are formed. When stress is applied to the piezoelectric sensor, charge is generated, and an output voltage in accordance with this generated charge is detected in a DC voltage detector. A controller measures this output voltage at a predetermined time interval. Every time the controller measures the output voltage, the controller makes a short-circuit control of a switch, and causes the charge generated in the piezoelectric sensor to be released. The controller can thereby detect an amount of change in output voltage generated at the predetermined time interval in accordance with an amount of displacement of the piezoelectric sensor. By sequentially integrating this, the controller can accurately detect the amount of displacement of the piezoelectric sensor which changes across measurement timings.

Abstract: A pointer includes: a pointer tip having a tip configured to point a position; a transmitter configured to emit a signal from the pointer tip; and a main body connected to the pointer tip. The main body includes: an exterior housing forming an exterior; a detector configured to detect displacement of the exterior housing and output a detection signal; and a controller configured to change an operation state of the pointer in accordance with the detection signal. The detector includes: a detection device provided on an inner surface of the exterior housing and configured to detect the displacement; and a signal outputter configured to output the detection signal in the case where the detection device detects the displacement.

Abstract: A touch type input terminal that includes a base substrate, a piezoelectric sensor and an electrostatic sensor which are flat membrane-shaped, respectively. The electrostatic sensor includes a plurality of segment electrodes on a first main surface of a base film and a plurality of common electrodes on a second main surface. The piezoelectric sensor includes a piezoelectric film formed of PLLA drawn uniaxially. Displacement detecting electrodes are formed on a third main surface of the piezoelectric film so as to divide the third main surface into four portions. Displacement detecting electrodes are formed on a fourth main surface of the piezoelectric film so as to be opposed to the displacement detecting electrodes on the third main surface.

Abstract: A specific region of a polylactic acid sheet is heated by a microwave. To allow the polylactic acid sheet to exhibit piezoelectricity in the thickness direction of the polylactic acid sheet, a high voltage is applied to the heated polylactic acid sheet in the thickness direction of the polylactic acid sheet, and thereby the screw axes of at least a part of the polylactic acid molecules are relatively aligned with the thickness direction. Then the polylactic acid sheet is rapidly cooled, and thereby the polylactic acid molecules are immobilized. The same step is executed for other regions of the polylactic acid sheet, and thereby piezoelectricity is imparted to a wide area of the polylactic acid sheet in the thickness direction. The resultant piezoelectric sheet is capable of exhibiting a high piezoelectricity in the thickness direction.

Abstract: An input terminal that includes a casing defining an opening; a holding member; a piezoelectric sensor; and an adhesive material adhering an outer peripheral edge portion of the holding member to an end edge portion of an opening of the casing. The adhesive material includes a first portion and a second portion. The first portion and the second portion differ from each other in at least one of modulus of elasticity, thickness or width.

Abstract: A displacement sensor having a rectangular shaped elastic member. A piezoelectric element is attached to a first main face of the elastic member. The piezoelectric element has a rectangular-shaped piezoelectric sheet and electrodes on both main faces of the piezoelectric sheet. The piezoelectric sheet is made of poly-L-lactic acid and is at least uniaxially-stretched. The piezoelectric element is attached so that the uniaxial-stretching direction of the piezoelectric sheet is 45° relative to a long-side direction of the elastic member. When the elastic member is bent along the long-side direction, the piezoelectric sheet is stretched along the long-side direction, and the piezoelectric element generates voltage of predetermined level.