Garden City, NY, United States
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Patent
TDK Corp | Date: 2017-02-01

In object to provide a unit of piezoelectric element having a preferable bending strength and preferably used as a part of a driving unit, a unit of piezoelectric element comprising: a multilayer piezoelectric element, having internal electrodes laminated having a piezoelectric body layer in-between and a pair of external electrodes formed on side surfaces extending along laminating direction and electrically connected to the internal electrodes, a wiring part connected to the external electrodes via a solder part, wherein a solder is solidified, a resin part, joining one end surface in the laminating direction of the multilayer piezoelectric element and a mounting surface of a connection member placed to face the one end surface, wherein the resin part is continuous from the one end surface and the mounting surface to the solder part; and the resin part covers the solder part, is provided.


Patent
TDK Corp | Date: 2017-01-30

An anti-tilt electromagnetic motor is provided, including a frame, a support base, a contact assembly, a drive assembly, and an elastic assembly. The support base is arranged movably relative to the frame along an axis. The contact assembly is disposed between the frame and the support base and directly contacts the frame and the support base. The drive assembly is configured to drive the support base to move. The elastic assembly is configured to provide a pre-loading force so as to enable the contact assembly to be compressed by the frame and the support base.


Patent
TDK Corp | Date: 2016-11-04

An R-T-B based sintered magnet includes R_(2)T_(14)B crystal grains. A grain boundary formed by the two or more adjacent R_(2)T_(14)B crystal grains includes an RNOC concentrated part having higher concentrations of R, N, O, and C than those in the R_(2)T_(14)B crystal grains. R of the RNOC concentrated part includes Y. A ratio of Y atom to R atom in the RNOC concentrated part is 0.65 or more and 1.00 or less. A ratio of O atom to R atom in the RNOC concentrated part is more than 0 and 0.20 or less. A ratio of N atom to R atom in the RNOC concentrated part is 0.03 or more and 0.15 or less.


Patent
TDK Corp | Date: 2016-09-30

The coil device comprises the magnetic core comprising the axial part and the magnetic core end part connecting to the axial part, the coil part formed by winding the wire around the axial part, and the electrode part provided at the magnetic core end part and made of good conductor. Said electrode part comprises the fixing surface fixed with a wire end part of said wire, and the fixing surface is provided on a side surface which does not intersect with a center axis of said coil part at said magnetic core end part. Said fixing surface is inclined to a direction away from said center axis with respect to a direction towards said magnetic core end part from said axial part.


Patent
TDK Corp | Date: 2017-01-04

A dielectric composition containing a complex oxide represented by the formula of xAO-yBO-zC_(2)O_(5) as the main component, wherein A represents at least one element selected from the group including Ba, Ca and Sr, B represents Mg, and C represents at least one element selected from the group including Nb and Ta, and x, y and z meet the following conditions, x+y+z=1.000, 0.000


This arcuate magnet piece (1) is provided with: coupling side surfaces (6, 7) which are coupled with other adjacently joined arcuate magnet pieces (1A); a curved inner peripheral surface (3); and a curved outer peripheral surface (2) which faces the inner peripheral surface (3). The coupling side surfaces (6, 7) are provided with tip surfaces (6a, 7a) which intersect, at prescribed angles (1, 2), tangents (T1, T2) to the direction of curvature of the outer peripheral surface (2). The coupling side surfaces (6, 7) are polarized such that, in cases when the gaps formed with the coupling side surfaces of the other arcuate magnet pieces (1A) are disposed so as to be substantially parallel, the magnetic poles of the other joined arcuate magnet pieces (1A) are different.


Patent
TDK Corp | Date: 2017-02-08

The present invention provides a semiconductor ceramic composition comprising a compound represented by the following general formula (1) as a main component.


Patent
TDK Corp | Date: 2017-04-05

An object of the present invention is to provide a ferrite magnetic material capable of providing a permanent magnet in which high Br and HcJ are kept, and which has a high Hk/HcJ. A ferrite magnetic material in accordance with a preferred embodiment has a ferrite phase having a hexagonal structure and has a main composition represented by Ca_(1-w-x-y)R_(w)Sr_(x)Ba_(y)Fe_(z)M_(m)O_(19) (R is at least one element of rare earth elements (including Y) essentially including La, and Bi, and M is at least one element of Co, Mn, Mg, Ni, Cu, and Zn essentially including Co), where 0.25


Patent
TDK Corp | Date: 2017-09-27

A dielectric thin film containing MgO as a main component, wherein the dielectric thin film is composed of a columnar structure group containing at least one columnar structure A constructed by single crystal and at least one columnar structure B constructed by polycrystal, respectively, and in the cross section of the direction perpendicular to the dielectric thin film, when the area occupied by the columnar structure A is set as C_(A) and the area occupied by the columnar structure B is set as C_(B), the relationship between C_(A) and C_(B) satisfies 0.4C_(B)/C_(A)1.1.


Patent
TDK Corp | Date: 2017-09-27

A dielectric film containing an alkaline earth metal oxide having a NaCl type crystal structure as a main component, wherein the dielectric film has a (111)-oriented columnar structure in a direction perpendicular to the surface of the dielectric film, and in a Cu-K X-ray diffraction chart of the dielectric film, a half width of the diffraction peak of (111) is in a range of from 0.3 to 2.0.

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