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公开(公告)号：US20160229738A1
公开(公告)日：2016-08-11
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
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％。
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公开(公告)号：US20250130449A1
公开(公告)日：2025-04-24
申请号：US18918299
申请日：2024-10-17
Applicant: TDK CORPORATION
Inventor： Kenji SASAKI , Takashi KIKUKAWA , Shusaku UMEMOTO
Abstract: An electro-optical component includes: a single crystal substrate; an optical waveguide made of a dielectric thin film formed in contact with a main surface of the single crystal substrate; and an electrode configured to apply voltage to the optical waveguide, wherein the dielectric thin film is made of a lithium niobate film that is an epitaxial film with a c-axis orientation, and a c-axis length of the lithium niobate film is 13.88 Å or more.
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公开(公告)号：US20250130448A1
公开(公告)日：2025-04-24
申请号：US18918185
申请日：2024-10-17
Applicant: TDK CORPORATION
Inventor： Kenji SASAKI , Takashi KIKUKAWA , Shusaku UMEMOTO
IPC: G02F1/035
Abstract: An electro-optical component includes: a single crystal substrate; an optical waveguide comprising a dielectric thin film formed in contact with the main surface of the single crystal substrate; and an electrode configured to apply voltage to the optical waveguide, wherein the dielectric thin film is made of a lithium niobate film that is an epitaxial film with a c-axis orientation, and an X-ray intensity ratio (LiNb3O8(60−2)/LiNbO3(006)) of LiNb3O8 to LiNbO3 is 0.02 or more.
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4.发明申请DIELECTRIC CERAMIC COMPOSITION, ELECTRONIC ELEMENT, AND COMPOSITE ELECTRIC ELEMENT 有权电介质陶瓷组合物，电子元件和复合电子元件公开(公告)号：US20140220364A1
公开(公告)日：2014-08-07
申请号：US14166479
申请日：2014-01-28
Applicant: TDK Corporation
Inventor： Shusaku UMEMOTO , Takashi Suzuki , Hidekazu Sato , Masaki Takahashi , Shinichi Kondo
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％。
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5.发明申请公开(公告)号：US20250129516A1
公开(公告)日：2025-04-24
申请号：US18919683
申请日：2024-10-18
Applicant: TDK Corporation
Inventor： Shusaku UMEMOTO , Kenji SASAKI , Takashi KIKUKAWA
Abstract: A substrate with a dielectric thin film includes: a single crystal substrate; and a dielectric thin film formed in contact with a main surface of the single crystal substrate, wherein the dielectric thin film has a thickness of 0.5 μm to 2 μm and is made of a lithium niobate film that is an epitaxial film with a c-axis orientation, the dielectric thin film has a twin crystal structure of LiNbO3 of a first crystal and a second crystal corresponding to a crystal in which the first crystal is rotated 180° around the c-axis, the first crystal and the second crystal in an upper region of the dielectric thin film, excluding a lower region from the single crystal substrate to half of a thickness direction in the dielectric film, have maximum domain widths of 80 nm to 300 nm.
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Patent Agency Ranking
公开(公告)号：US20190194063A1
公开(公告)日：2019-06-27
申请号：US16181715
申请日：2018-11-06
Applicant: TDK CORPORATION
Inventor： Shusaku UMEMOTO , Takashi SUZUKI , Hidekazu SATO , Masaki TAKAHASHI , Shinichi KONDO
CPC classification number: C03C10/0036 , C03C4/16 , C03C10/0054 , C03C2204/00 , H01F27/2804 , H01F27/323 , H01F41/02 , H01F2027/2809
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.
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7.发明申请公开(公告)号：US20250028194A1
公开(公告)日：2025-01-23
申请号：US18736684
申请日：2024-06-07
Applicant: TDK CORPORATION
Inventor： Shusaku UMEMOTO , Kenji SASAKI , Takashi KIKUKAWA
IPC: G02F1/035
Abstract: A substrate with a dielectric thin film 1 includes a single-crystal substrate, a stress relaxation layer, and a dielectric thin film, in which the stress relaxation layer is made of a c-axis-oriented epitaxial film, and includes a twin crystal structure of LiNbO3 including a first and a second crystal existing at a position obtained by rotating the first crystal 180° about a c-axis and a LiNb3O8 phase, the dielectric thin film is made of a lithium niobate film which is a c-axis-oriented epitaxial film, has the twin crystal structure of LiNbO3, has a film thickness of 0.5 μm to 2 μm, and has a maximum domain width greater than a maximum domain width of the stress relaxation layer, and a percentage of a film thickness of the stress relaxation layer to the film thickness of the dielectric thin film is 5% to 25%.
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公开(公告)号：US20210096441A1
公开(公告)日：2021-04-01
申请号：US17006047
申请日：2020-08-28
Applicant: TDK Corporation
Inventor： Shusaku UMEMOTO
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.
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公开(公告)号：US20180330855A1
公开(公告)日：2018-11-15
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
CPC classification number: H01F5/06 , H01F17/0013 , H01F2017/004
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.
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公开(公告)号：US20180230040A1
公开(公告)日：2018-08-16
申请号：US15887281
申请日：2018-02-02
Applicant: TDK CORPORATION
Inventor： Shusaku UMEMOTO , Takashi SUZUKI , Hidekazu SATO , Masaki TAKAHASHI , Shinichi KONDO
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.
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