Tdk Corporation

Hitachi High-Tech Science Corporation

Fujitsu Corporation

Alps Alpine Co., Ltd.

Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Adv Antest Corporation

Canon Kabushiki Kaisha

Akihiro Takeda

Toru Takahashi

Yoshiki Ohta

Kazushi Tachimoto

Hideya Sakamoto

Yoshikazu Shimura

Tetsuyuki Taniguchi

Satoshi Ozawa

Hiroshi Kage

Ryuhei Sasaki

Kenichi Tanaka

Kaoru Kijima

Yoshiki Matoba

Junji Hashida

Koji Tsukamoto

Misao Kikuchi

Haruo Taguchi

Nobuo Furukawa

Yoshifumi Masumoto

Kohsuke Shimazaki

Mitsuhiko Yamamoto

Toru Sawada

Shigeki Taniguchi

Yuta Urano

Minoru Sato

Shinji Komori

Atsushi Matsuda

Kazuo Kyuma

Tatsuya Taki

Shinichi Higuchi

Kaifeng Zhang

Takuto Horii

Tomoyuki Yamai

Atsushi Ezawa

Nana Sato

Toshiki Maruyama

Suguru Wada

Takenobu Horino

Jun Sugawara

Tomohiro Takeda

Shingo Tsuboi

Toshihiro Sakai

Sadakazu Shiga

Kenichiro Andou

Miho Bamba

Nobou Furukawa

Koji Taniwaki

Junpei Kikuchi

A piezoelectric element includes a piezoelectric body including a piezoelectric material, and a first electrode and a second electrode provided on the piezoelectric body. The piezoelectric body includes a base and a plurality of drivers. The base includes a first main surface and a second main surface opposing each other. The plurality of drivers is arranged on the first main surface in such a way as to be separate from each other. Each of the plurality of drivers includes a third main surface contacting the first main surface and a fourth main surface opposing the third main surface. The base includes a plurality of first regions in which the plurality of drivers is provided and a second region provided between the first regions adjacent to each other. The base is curved.

Piezoelectric element

An audio device includes a vibration member, and a first piezoelectric vibrator and a second piezoelectric vibrator that are provided on the vibration member. A natural frequency of the first piezoelectric vibrator is larger than a natural frequency of the second piezoelectric vibrator.

Audio device

A vibration device includes a bimorph type piezoelectric element having a first main surface and a second main surface facing each other and a vibration member bonded to the second main surface of the piezoelectric element. The piezoelectric element has a first active region disposed closer to the first main surface between the first and second main surfaces and a second active region disposed closer to the second main surface than the first active region between the first and second main surfaces. When a force generated in the first active region is F1, a force generated in the second active region is F2, and a force by which the vibration member restrains the second active region is Fr, F2−F1≥Fr is satisfied.

Vibration device and piezoelectric element

A piezoelectric element includes a piezoelectric body, an electrode layer, and a reinforcing layer. The piezoelectric body has a first main surface, a second main surface, and a side surface. The first main surface and the second main surface oppose each other. The side surface extends in an opposing direction in which the first main surface and the second main surface oppose each other in such a way as to connect the first main surface and the second main surface. The electrode layer is provided in the piezoelectric body. The reinforcing layer is provided on the first main surface. The electrode layer is provided opposing the first main surface and apart from the side surface. When viewed from the opposing direction, the electrode layer has a corner. When viewed from the opposing direction, the reinforcing layer overlaps the corner.

Piezoelectric element and vibrating device

A vibration device includes a piezoelectric vibrator having a piezoelectric element and a diaphragm having a pair of main surfaces facing each other, the piezoelectric element being bonded to the main surface, a vibration member where the piezoelectric vibrator is disposed, and an adhesive member disposed between the diaphragm and the vibration member and bonding the diaphragm and the vibration member. Each of the pair of main surfaces of the diaphragm has a rectangular shape when viewed from a facing direction of the pair of main surfaces, and the adhesive member is disposed in a facing manner on at least a pair of sides of the main surfaces.

Vibration device

In a piezoelectric element, shift of a resonance point to a low-pitched sound side is achieved. A resonance point of a piezoelectric element moves to a low-pitched sound side when an active region is configured to be surrounded by an inactive region as in the configuration of the piezoelectric element. According to the piezoelectric element whose resonance point is moved to a low-pitched sound side, the piezoelectric element can realize a sound pressure that is sufficiently high for practical use when it is applied to an acoustic device.

A piezoelectric element includes a piezoelectric element body including a first principal surface and a second principal surface opposing each other, and a plurality of external electrodes disposed on the first principal surface. A vibration member includes a third principal surface opposing the second principal surface. The piezoelectric element is joined to the third principal surface. A wiring member is electrically connected to the piezoelectric element. The wiring member includes a region located on the plurality of external electrodes and joined to the plurality of external electrodes. The region of the wiring member monolithically covers the plurality of external electrodes when viewed from a direction orthogonal to the first principal surface.

A piezoelectric element includes a piezoelectric body layer, a first electrode, a second electrode, a third electrode, and a conductor. The piezoelectric body layer has rectangular first and second principal surfaces opposing each other, and includes a piezoelectric material. The first electrode is provided on the first principal surface. The second electrode is provided on the first principal surface in such a way that the second electrode is separated from the first electrode. The third electrode is provided on the second principal surface in such a way that the third electrode opposes the first electrode. The conductor is connected to the second electrode and the third electrode. The first electrode has a round corner being rounder than a corner part of the piezoelectric body layer when seen in an opposing direction of the first and second principal surfaces.

The X-ray inspection apparatus includes an X-ray source, a sample moving mechanism, an X-ray detector equipped with a line sensor with pixels detecting X-ray radiation passing through a sample, an image storage unit for storing X-ray radiation intensities, an intensity correction unit for correcting the X-ray radiation intensities stored in the image storage unit, and a defect detector for detecting a defect in the sample. The intensity correction unit sets an intensity of X-rays detected from the inspection initiation region after starting inspection of the sample or an intensity of X-rays preliminarily detected from the sample before starting the inspection as a reference radiation intensity, and corrects an intensity of X-rays detected from the subsequent inspection region based on a correction coefficient obtained from comparison between the intensity of X-rays detected from the subsequent inspection region and the reference radiation intensity.

X-ray inspection apparatus and X-ray inspection method

In an input device capable of reliably detecting, when an operator brings an operating body close to or into contact with an operation plane, absolute position information irrespective of a contact area size, third electrode arrays are disposed closer to the operation plane relative to second electrode arrays in a normal direction of the operation plane, the second electrode arrays have a portion protruding from the corresponding third electrode arrays when viewed in the normal direction, and assuming that a change amount of electrostatic capacitance between first and third electrode arrays occurred by an operation of the operating body is denoted by &#x394;C1 and a change amount of electrostatic capacitance between the first and second electrode arrays occurred by an operation of the operating body is denoted by &#x394;C2, a position of the operating body in the normal direction is calculated based on a ratio &#x394;C1/&#x394;C2.

Input device

A multilayer piezoelectric element includes a piezoelectric element body, a first internal electrode and a second internal electrode, a plurality of first connecting conductors, a plurality of second connecting conductors, and an external member. The piezoelectric element body is formed by laminating a plurality of piezoelectric element body layer. The piezoelectric element body includes a first main surface and a second main surface, and a side surface. The plurality of first connecting conductors are connected to the first internal electrode. The plurality of second connecting conductors are connected to the second internal electrode. The external member is conductive and is bonded to the first main surface in such a way as to cover the first end portions of the plurality of first connecting conductors. The external member is electrically connected to the plurality of first connecting conductors.

Multilayer piezoelectric element and vibrating device

Vibration element

Detection can be performed even for a thick inspection target object through time delay integration without degradation of spatial resolution. There is provided an X-ray inspection device configured to include: an X-ray source that generates X-rays; a transport unit that performs transporting a sample; a detecting unit that has a time delay integration type detector which detects X-rays generated by the X-ray source and transmitted through the sample transported by the transport unit; and a defect determining unit that processes a signal obtained by detecting the X-rays transmitted through the sample by the time delay integration type detector of the detecting unit and determines a defect in the sample. The transport unit performs transporting the sample while causing the sample to rotate in synchronization with the transporting when the sample passes in front of the time delay integration type detector of the detecting unit.

X-ray inspection method and X-ray inspection device

A piezoelectric element includes first and second electrodes, a first piezoelectric body layer, and a plurality of first through-hole conductors. The first and second electrodes oppose each other. The first piezoelectric body layer is disposed between the first electrode and the second electrode. The plurality of first through-hole conductors penetrates the first piezoelectric body layer and is connected to the first electrode and the second electrode. When seen in an opposing direction of the first and second electrodes, the plurality of first through-hole conductors is arrayed in a matrix.

An input device includes a translucent base material having flexibility, translucent first electrode parts arranged in a sensing region on the base material in a first direction, translucent second electrode parts arranged in the sensing region on the base material in a second direction crossing the first direction, and lead wires that are electrically continuous to the first electrode parts and second electrode parts, the lead wires extending from the sensing region on the base material to a peripheral region allocated outside the sensing region. A bent portion is provided in the peripheral region on the base material. Each lead wire has a flexible conductive member on the bent portion. A covering material is provided so as cover at least part of the flexible conductive member on the base material.

Growing community of inventors

Tokyo, Japan

Akihiro Takeda