公开(公告)号：US20200308429A1

公开(公告)日：2020-10-01

申请号：US16830403

申请日：2020-03-26

Applicant: TDK CORPORATION

Inventor： Takashi FUKUI ,  Osamu HIROSE ,  Masanori ABE ,  Kazunari KIMURA ,  Hisashi KOBUKE

IPC: C09D11/17 ,  H03H1/00

Abstract: Provided is a more versatile black marker composition which achieves excellent adhesion between a mark and an electronic component element body and excellent contrast of a mark regardless of the composition of the electronic component element body, the black marker composition containing borosilicate glass and a black oxide, in which a crystallization temperature of the borosilicate glass is less than 910° C., and an amount of Zn in terms of ZnO is 0.05% by mass or less based on 100% by mass of an inorganic solid content in terms of an oxide contained in the black marker composition.

公开(公告)号：US20190252753A1

公开(公告)日：2019-08-15

申请号：US16227558

申请日：2018-12-20

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Shigemitsu TOMAKI ,  Yousuke FUTAMATA ,  Shin TAKANE ,  Yasuharu MIYAUCHI ,  Kazunari KIMURA

IPC: H01P1/20 ,  H01P1/30 ,  H01P7/10 ,  H01P11/00

Abstract: A dielectric filter includes a plurality of dielectric resonators. The dielectric filter also includes: a plurality of resonator body portions each formed of a first dielectric and respectively corresponding to the plurality of dielectric resonators, the first dielectric having a first relative permittivity; a peripheral dielectric portion formed of a second dielectric and lying around the plurality of resonator body portions, the second dielectric having a second relative permittivity lower than the first relative permittivity; and a shield portion formed of a conductor. Either one of a temperature coefficient of resonant frequency of the first dielectric at 25° C. to 85° C. and a temperature coefficient of resonant frequency of the second dielectric at 25° C. to 85° C. has a positive value and the other has a negative value.

公开(公告)号：US20210300825A1

公开(公告)日：2021-09-30

申请号：US17212384

申请日：2021-03-25

Applicant: TDK CORPORATION

Inventor： Takashi FUKUI ,  Masanori ABE ,  Kazunari KIMURA ,  Kazusa OHSUGI ,  Fuga SATO

IPC: C04B35/20 ,  H01B3/12

Abstract: Provided is a dielectric ceramic composition comprising a main component of forsterite and calcium strontium titanate. A content ratio of forsterite in the main component is from 84.0 to 92.5 parts by mole, and a content ratio of calcium strontium titanate is from 7.5 to 16.0 parts by mole. (Sr+Ca)/Ti in the calcium strontium titanate is from 1.03 to 1.20 in terms of a molar ratio. With respect to a total of 100 parts by mass of the main component and a subcomponent except for Li-containing glass, from 2 to 10 parts by mass of Li-containing glass is added. The Li-containing glass includes Al2O3 in an amount of from 1% by mass to 10% by mass.

公开(公告)号：US20170365902A1

公开(公告)日：2017-12-21

申请号：US15620053

申请日：2017-06-12

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Kazunari KIMURA ,  Shigemitsu TOMAKI

IPC: H01P1/20 ,  H01P7/10

CPC classification number: H01P1/2002 ,  H01P1/20309 ,  H01P1/2084 ,  H01P7/10

Abstract: A dielectric filter includes: a resonator body formed of dielectric material; surrounding dielectric portion present around the resonator body and formed of dielectric material having a relative permittivity lower than the dielectric material used to form the resonator body; and an input/output conductor portion formed of a conductor and configured to perform at least one supply of an electromagnetic wave to the resonator body and reception of an electromagnetic wave from the resonator body. The resonator body has a first end face and a second end face located at opposite ends in a first direction. The input/output conductor portion is located either at least part of the input/output conductor portion is contained in a space formed by shifting a virtual plane corresponding to the first end face in the first direction away from the second end face, or the input/output conductor portion is in contact with the space.

公开(公告)号：US20140299016A1

公开(公告)日：2014-10-09

申请号：US14220482

申请日：2014-03-20

Applicant: TDK CORPORATION

Inventor： Misaki TABATA ,  Kazunari KIMURA

IPC: C09D17/00

CPC classification number: H01L23/544 ,  C09D11/037 ,  C09D11/52 ,  H01G2/24 ,  H01L2223/54426 ,  H01L2223/54486 ,  H01L2924/0002 ,  H01L2924/00

Abstract: The object of the present invention is to provide a black marker composition capable of forming non-metal marker which sufficiently ensures the adhering strength and the contrast against the foundation; the electronic component comprising the marker made of said black marker composition, and further the communication device comprising said electronic component.The marker composition according to the present invention comprises a borosilicate glass, and a black oxide including Cr, Mn and one or more elements selected from the group consisting of Fe, Ni, Cu and Co.

Abstract translation: 本发明的目的是提供一种黑色标记组合物，其能够形成非金属标记，其足以确保与基底的粘合强度和对比度; 所述电子部件包括由所述黑色标记组合物制成的标记，并且还包括所述电子部件的通信装置。 根据本发明的标记组合物包含硼硅酸盐玻璃和包含Cr，Mn的黑色氧化物和选自Fe，Ni，Cu和Co的一种或多种元素。