公开(公告)号：US09159467B2

公开(公告)日：2015-10-13

申请号：US14166479

申请日：2014-01-28

Applicant: TDK Corporation

Inventor： Shusaku Umemoto ,  Takashi Suzuki ,  Hidekazu Sato ,  Masaki Takahashi ,  Shinichi Kondo

IPC: C03C8/22 ,  C03C8/14 ,  H01B3/12 ,  C03C14/00

CPC classification number: H01B3/12 ,  C03C8/22 ,  C03C14/00 ,  C03C2214/20

Abstract: In order to provide a dielectric ceramic composition capable of sintering at a low temperature, implementing a low relative dielectric constant, providing other excellent properties (such as a relative density and an insulation resistance), performing co-firing of different materials, and suppressing dispersion of Ag in the sintered body when the internal electrode is formed, the dielectric ceramic composition includes a main ingredient containing SiO2—K2O—B2O3-based glass of 40 to 65 weight %, quartz of 35 to 50 weight %, and amorphous silica of remaining weight %; and a subsidiary ingredient containing alumina of 1.5 to 4 weight %, K2O-MO—SiO2—B2O3-based glass (where “MO” denotes at least any one selected from a group consisting of CaO and SrO) of 5 to 20 weight % relative to the main ingredient of 100 weight %.

Abstract translation: 为了提供能够在低温下烧结的介电陶瓷组合物，实现低相对介电常数，提供其它优异的性能（例如相对密度和绝缘电阻），进行不同材料的共烧，抑制分散 在内部电极形成时，烧结体中的Ag的电介质陶瓷组合物包含含有40〜65重量％的SiO 2 -K 2 O-B 2 O 3类玻璃，35〜50重量％的石英，剩余的无定形二氧化硅 重量％ 和含有1.5〜4重量％氧化铝，K2O-MO-SiO2-B2O3系玻璃（其中“MO”表示选自CaO和SrO中的至少任意一种）的辅助成分相对于5重量％至20重量％ 主要成分为100重量％。

公开(公告)号：US10781132B2

公开(公告)日：2020-09-22

申请号：US15887281

申请日：2018-02-02

Applicant: TDK CORPORATION

Inventor： Shusaku Umemoto ,  Takashi Suzuki ,  Hidekazu Sato ,  Masaki Takahashi ,  Shinichi Kondo

IPC: H01F27/29 ,  C03C14/00 ,  C03C10/00 ,  C03C3/093 ,  C03C4/16 ,  H01F27/32

Abstract: Provided is a glass ceramics sintered body including a glass phase and a ceramics phase dispersed in the glass phase, in which the ceramics phase includes alumina grains and zirconia grains, the glass phase includes an MO—Al2O3—SiO2—B2O3 based glass, in which “M” is an alkaline earth metal, and an area ratio of the alumina grains is 0.05 to 12% and the area ratio of the zirconia grains is 0.05 to 6% on the cross section of the sintered body. According to the invention, a glass ceramics sintered body, capable of a low temperature sintering having a low dielectric constant and a sufficient strength, and a coil electronic component using thereof can be provided.

公开(公告)号：US10600540B2

公开(公告)日：2020-03-24

申请号：US16026193

申请日：2018-07-03

Applicant: TDK CORPORATION

Inventor： Takahiro Sato ,  Yuya Ishima ,  Shusaku Umemoto ,  Takashi Suzuki ,  Satoru Okamoto ,  Yoshikazu Sakaguchi

IPC: H01F27/30 ,  H01F5/06 ,  H01F17/00

Abstract: A laminated coil component includes an element assembly formed by laminating a plurality of insulation layers and a coil unit formed inside the element assembly by a plurality of coil conductors. The element assembly includes a coil unit arrangement layer which has the coil unit arranged therein, and at least a pair of shape retention layers which is provided to have the coil unit arrangement layer interposed therebetween to retain a shape of the coil unit arrangement layer. The shape retention layer is made from glass-ceramic containing SrO, and a softening point of the coil unit arrangement layer is lower than a softening point or a melting point of the shape retention layer.

公开(公告)号：US09573837B2

公开(公告)日：2017-02-21

申请号：US15015420

申请日：2016-02-04

Applicant: TDK CORPORATION

Inventor： Shusaku Umemoto ,  Takashi Suzuki ,  Masaki Takahashi ,  Hidekazu Sato ,  Yukari Akita ,  Kazuya Tobita ,  Shinichi Kondo

IPC: C03C8/22 ,  C03C8/14 ,  H01F27/28 ,  C03C3/089 ,  H01F17/00 ,  H01F27/29 ,  C03C3/091 ,  C03C3/093 ,  C03C14/00 ,  C04B35/00 ,  C03B19/06

CPC classification number: C03C3/089 ,  C03B19/06 ,  C03C3/091 ,  C03C3/093 ,  C03C8/22 ,  C03C14/004 ,  C04B35/00 ,  H01F17/0013 ,  H01F27/292

Abstract: A glass ceramic composition of the present invention includes a main component composed of a first glass, a second glass, Al2O3, and SiO2. The first glass is SiO2—K2O—B2O3 based glass. The second glass is MO—SiO2—Al2O3—B2O3 based glass (“M” is an alkaline-earth metal) and/or CaO—SiO2—Al2O3—ZnO—ZrO2—B2O3 based glass. In case that the total amount of the main component is 100 wt %, the main component contains the second glass of 12 to 30 wt %, the first and second glass of 40 to 56 wt % in total, and further Al2O3 of 7 to 18 wt %.

Abstract translation: 本发明的玻璃陶瓷组合物包括由第一玻璃，第二玻璃，Al 2 O 3和SiO 2构成的主要成分。 第一块玻璃是SiO2-K2O-B2O3基玻璃。 第二玻璃是MO-SiO2-Al2O3-B2O3基玻璃（“M”是碱土金属）和/或CaO-SiO2-Al2O3-ZnO-ZrO2-B2O3基玻璃。 在主成分的总量为100重量％的情况下，主成分含有12〜30重量％的第二玻璃，第一玻璃和第二玻璃的总量为40〜56重量％，进一步为7〜18的Al 2 O 3 重量％。

公开(公告)号：US11460751B2

公开(公告)日：2022-10-04

申请号：US17006047

申请日：2020-08-28

Applicant: TDK Corporation

Inventor： Shusaku Umemoto

IPC: G02F1/225 ,  G02F1/03 ,  G02F1/21

Abstract: An optical modulator is provided with an optical waveguide, an electrode provided opposite to the optical waveguide, and a buffer layer provided between the optical waveguide and the electrode. A main material of the buffer layer is lanthanum fluoride.

公开(公告)号：US11168022B2

公开(公告)日：2021-11-09

申请号：US16181715

申请日：2018-11-06

Applicant: TDK CORPORATION

Inventor： Shusaku Umemoto ,  Takashi Suzuki ,  Hidekazu Sato ,  Masaki Takahashi ,  Shinichi Kondo

IPC: C03C10/00 ,  C03C4/16 ,  H01F27/32 ,  H01F41/02 ,  H01F27/28 ,  H01F41/04 ,  H01F27/29 ,  H01F17/00 ,  H01F41/12

Abstract: A glass ceramics sintered body includes a glass phase and a ceramics phase dispersed in the glass phase. The ceramics phase includes alumina grains and zirconia grains. The glass phase includes an MO—Al2O3—SiO2—B2O3 based glass, where M is an alkaline earth metal. An area ratio of the alumina grains is 13 to 30%, and an area ratio of the zirconia grains is 0.05 to 6%, on a cross section of the sintered body.