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JP4394135B2 |
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JP2009302350A |
To achieve the reduction of cost by dividing packages of a microphone, a loudspeaker, a pressure sensor, etc., into individual pieces by a dicing processing.In the method of manufacturing a semiconductor device such that a hole 44 for co...
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JP2009298020A |
To provide a method of molding a resin diaphragm having uneven thickness without causing sink marks, voids and the like.A molding die 3 consists of the concave die 5 and the convex die 4, the molding cavity 10 that is formed in the insid...
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JP2009296502A |
To provide the manufacturing method of a small-sized speaker which is improved in productivity and capable of making equipment to be set light, and to provide a holding tool with a diaphragm which is to be used in the manufacturing metho...
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JP2009296238A |
To suppress a change of an electretized amount caused by an ionizer irradiation of a dielectric film which is transduced to an electret and to reduce a change of sensitivity in a microphone.A conductive substance 4 is not grounded to the...
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JP2009291514A |
To provide a method for manufacturing a capacitive transducer by which joining defect on a joined boundary arising in manufacturing the capacitive transducer is reduced, and to provide the capacitive transducer.In the method for manufact...
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JP4386109B2 |
An ultrasonic sensor includes a piezoelectric element and an acoustic matching member that are joined together to form an ultrasonic detector base. The ultrasonic detector base is sectioned by a clearance extending in an ultrasonic propa...
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JP4387240B2 |
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JP2009284043A |
To provide an ultrasonic probe which has simple and inexpensive constitution, efficiently extracts a signal associated with a harmonic component, and measures a microscopic defect with high precision; and to provide a method of manufactu...
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JP4374791B2 |
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JP4378279B2 |
An audio speaker includes a driver unit having a magnetic pole case defining a radial gap, a vibration system having a diaphragm and a voice coil where the vibration system is fixed to the drive unit and the voice coil is movably mounted...
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JP4376910B2 |
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JP2009278309A |
To solve the problem wherein a diaphragm growing in a high-pitched sound area tends to produce noisy tone quality with respect to a diaphragm for a speaker used for variety of video equipment and audio equipment and the speaker using the...
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JP2009540651A |
An acoustic device (500), comprising an oscillatory membrane (501) which comprises a transducing element (503) and a frame (504) adapted for accommodating the membrane (501) in an accommodation plane, wherein the membrane (501) is accomm...
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JP4366878B2 |
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JP4367515B2 |
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JP2009267617A |
To provide a method of manufacturing a transducer which can be implemented in an LSI preprocess without increasing the number of processes.A thermal oxidation film is formed on an insulating film 101 (Fig.2(A)). Then titanium of a contac...
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JP2009267649A |
To provide an electret material for electrostatic sound transducer which is excellent in charge retention.The heat-resistance electret material 100 for electrostatic sound transducer is provided with an electrode 10, a fixed part 11 and ...
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JP2009267616A |
To solve the problem: a conventional piezoelectric speaker using a PZT is less consistent with a CMOS semiconductor process used for a dedicated driver IC, in the manufacturing process of the piezoelectric speaker, and hence it is diffic...
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JP4362400B2 |
A speaker device includes a magnetic circuit system having a resin frame and a plate. The frame holds the magnetic circuit system, and has a step portion, a hole portion, a recess portion and a slit. The step portion is formed on an inne...
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JP2009538238A |
The component has a membrane on an upper side and a counter unit, where a hollow space is formed between the membrane and the counter unit. The counter unit has a passage hole (4) in a rear volume that is formed by a closed hollow space ...
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JP2009260672A |
To provide a motor-driven speaker in which rigidity of a voice coil is improved even in spite of a shorter elongated shape in a short-diameter direction relative to that in a long-diameter direction, operational defects are reduced to st...
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JP4357687B2 |
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JP2009253674A |
To provide an electromagnetic transducer for generating a magnetic flux on even a turning portion of a conductor coil pattern, and highly efficiently generating a sound pressure while further almost fully driving a vibration film.The ele...
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JP2009253793A |
To solve the problems that a voice coil can not be accurately positioned without deviation due to the dimension errors of a top plate, a magnet and the voice coil, relating to a voice coil positioning jig used for manufacturing a speaker...
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JP4352637B2 |
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JP4354350B2 |
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JP4355273B2 |
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JP4347885B2 |
It becomes possible to obtain high sound pressure in a high frequency domain by a capacitive ultrasonic transducer which comprises a membrane 9 on which one electrode 7 is formed, a cavity 13 constructed in its backface, and a substrate ...
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JP2009235245A |
To provide a thermoplastic elastomer composition which has excellent vibration absorbability because of having good loss tangent (tan ), is small in the anisotropy of tensile breaking elongation, is good in oil bleeding resistance, and c...
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JP2009235309A |
To provide a thermoplastic elastomer composition suitably usable as a material of a thin-walled molded product such as an edge member of a speaker.The thermoplastic elastomer composition is obtained by subjecting a raw material compositi...
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JP4345049B2 |
A method of producing a thin film bulk acoustic resonator having a piezoelectric layer, a first electrode joined to a first surface of the piezoelectric layer, and a second electrode joined to a second surface of the piezoelectric layer,...
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JP2009232164A |
To provide a thinned card-shaped mobile terminal in which a housing case is essentially eliminated and a frame, a substrate, an antenna, and the like are, then built-in so that rigidity is improved and antenna performance is enhanced.In ...
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JP2009232387A |
To provide a diaphragm which is made using a magnesium alloy, has sufficient rigidity and can suppress split vibration, and to provide a manufacturing method thereof.The dome type diaphragm for a speaker is formed by press-machining a ma...
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JP2009232049A |
To provide an electrodynamic loudspeaker which is high in the rigidity of a voice coil even when the voice coil is a slender shape that the short diameter direction is shorter than a long diameter direction, which is less in operation de...
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JP2009232061A |
To provide a cone type diaphragm for a speaker, made of a magnesium alloy, which has sufficient rigidity and can suppress split vibration, and to provide a manufacturing method thereof.The cone type diaphragm for a speaker is formed by p...
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JP4338395B2 |
A raised micro-structure is disclosed for use in a silicon based device. The raised micro-structure comprises a generally planar film having a ribbed sidewall supporting the film.
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JP4338565B2 |
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JP2009224954A |
To provide an organic piezoelectric material excellent in piezoelectric characteristics, especially heat resistance, and also to provide an ultrasonic vibrator receiving high frequencies with high sensitivity and used in an ultrasonic me...
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JP4337575B2 |
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JP2009219089A |
To provide a manufacturing method of a sound wave generation device which can be formed so as to have a large area and to be inexpensive by deposition using application without limiting a substrate to silicon.A fluid material including p...
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JP2009210440A |
To provide a cylindrical cavitation sensor for conquering conventional shortcomings where the influence of cavitation increases depending on a use state since a piezoelectric element is arranged on the inner surface of a sensor, the piez...
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JP4328245B2 |
A speaker device includes a terminal member, a connecting member, a conductive damper and a diaphragm. The connecting member has a terminal mounting part. The terminal mounting part has a projecting part and a connecting part. The connec...
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JP2009201053A |
To provide an ultrasonic probe which generates an excellent ultrasonic image by suppressing internal reflection as much as possible in an acoustic matching layer composed of two materials, and to provide an ultrasonic diagnostic device u...
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JP4323487B2 |
An ultrasonic transducer comprises: an acoustic matching layer including at least a layer made up of a hard material; a piezoelectric member which is provided with electrodes on both plane portions and which is fixed and disposed such th...
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JP4324452B2 |
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JP4321239B2 |
To provide an ultrasonic flowmeter with high reliability having an acoustic matching layer configured with a ceramic porous body including organic glass in an ultrasonic vibrator. The ultrasonic vibrator 1 is configured with a rectangula...
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JP4317123B2 |
The invention is directed towards structures for use with micro-formed membrane ultrasonic transducers, and methods for fabricating the structures. In one embodiment, the transducer includes a planar member having a piezoelectric materia...
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JP2009177048A |
To form an organic piezoelectric material excellent in piezoelectric characteristics and heat resistance by using a polarization processing method for effectively forming a polarized structure, and to provide an organic piezoelectric fil...
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JP4307172B2 |
A substrate (580) made by a thin magnesium plate having a thickness of at most 60 µm and bent in a predetermined shape is subjected to anodic oxidation using an alkali-mixture aqueous solution containing metallic salt with a pH 12 or mo...
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