公开(公告)号：US10354799B2

公开(公告)日：2019-07-16

申请号：US15900084

申请日：2018-02-20

Applicant: TDK CORPORATION

Inventor： Ryota Nomura ,  Hiroki Akiba ,  Sanshiro Aman ,  Tetsuhiro Takahashi

IPC: H01G4/12 ,  C04B35/49 ,  C04B35/495 ,  H01G4/30 ,  H01G4/008 ,  H01G4/012 ,  C04B35/465 ,  C04B35/468 ,  C04B35/47 ,  C04B35/626 ,  C04B35/638 ,  C04B35/64

Abstract: A dielectric composition comprising a main component expressed by a chemical formula of (A6-xBxCx+2D8-xO30, 0≤x≤5), wherein said “A” component is at least one element selected form the group consisting of Ba, Ca, and Sr, said “B” component is at least one element selected from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, said “C” component is at least one element selected from the group consisting of Ti, and Zr, said “D” component is at least one element selected from the group consisting of Nb, and Ta, and said dielectric composition comprises 2.50 mol or more and 20.00 mol or less of an oxide of Ge as a first sub component with respect to 100 mol of said main component.

公开(公告)号：US10759709B2

公开(公告)日：2020-09-01

申请号：US16087884

申请日：2017-03-06

Applicant: TDK CORPORATION

Inventor： Hiroki Akiba ,  Sanshiro Aman ,  Keiko Takeuchi

IPC: C04B35/495 ,  H01G4/12 ,  C04B35/626 ,  C04B35/64 ,  H01G4/30 ,  H01B3/12 ,  C04B35/01 ,  H01G4/012 ,  H01G4/248

Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00-(s+t)BasCat)6.00-xRx(Ti1.00-aZra)x+2.00(Nb1.00-bTab)8.00-xO30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50≤s≤1.00, 0≤t≤0.30, 0.50≤s+t≤1.00, 1.50

公开(公告)号：US10777355B2

公开(公告)日：2020-09-15

申请号：US16087790

申请日：2017-03-06

Applicant: TDK CORPORATION

Inventor： Sanshiro Aman ,  Hiroki Akiba ,  Keiko Takeuchi

IPC: H01G4/12 ,  C04B35/495 ,  C04B35/49 ,  H01G4/30 ,  C04B35/499 ,  H01B3/02 ,  C04B35/626

Abstract: [Object] provide a dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition.[Solving Means] A dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00−s−tBasCat)6.00−xRx(Ti1.00−aZra)x+2.00(Nb1.00−bTab)8.00−xO30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.70≤s≤1.00, 0≤t≤0.30, 0.70≤s+t≤1.00, 0≤x≤0.50, 0.10≤a≤1.00, and 0≤h≤1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.

公开(公告)号：US11873255B2

公开(公告)日：2024-01-16

申请号：US17558077

申请日：2021-12-21

Applicant: TDK CORPORATION

Inventor： Toshihiro Iguchi ,  Tetsuhiro Takahashi ,  Hiroki Akiba ,  Ryota Nomura

IPC: C04B35/495 ,  H01G4/12

CPC classification number: C04B35/495 ,  H01G4/1254 ,  C04B2235/765

Abstract: In order to provide a dielectric composition having high density even when fired at a relatively low temperature, the main component of a dielectric composition includes tantalum and at least one of barium or strontium, and the subcomponent of the dielectric composition includes at least one element selected from the group consisting of vanadium, titanium, and aluminum.

公开(公告)号：US10777354B2

公开(公告)日：2020-09-15

申请号：US16088007

申请日：2017-03-06

Applicant: TDK CORPORATION

Inventor： Sanshiro Aman ,  Hiroki Akiba ,  Keiko Takeuchi

IPC: C04B35/495 ,  C04B35/465 ,  H01G4/12 ,  C04B35/01 ,  H01B3/12 ,  H01G4/30

Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr1.00−s−tBasCat)6.00−xRx(Ti1.00−aZra)x+2.00(Nb1.00−bTab)8.00−xO30.00 in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50≤s≤1.00, 0≤t≤0.50, 0.50≤s+t≤1.00, 0.50

公开(公告)号：US10513464B2

公开(公告)日：2019-12-24

申请号：US16087856

申请日：2017-03-06

Applicant: TDK CORPORATION

Inventor： Hiroki Akiba ,  Sanshiro Aman ,  Keiko Takeuchi

IPC: C04B35/495 ,  H01G4/12 ,  H01G4/30 ,  H01B3/12 ,  C04B35/626

Abstract: A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the composition, the composition containing a tungsten bronze type composite oxide represented by chemical formula (Sr1.00−(s+t)BasCat)6.00−xRx(Ti1.00−(a+d)ZraSid)x−2.00(Nb1.00−bTab)8.00−xO30.00, wherein R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, b, and d satisfy 0≤s≤1.00, 0≤t≤1.00, 0≤s+t≤1.00, 0≤x≤3.00, 0.01≤a≤0.98, 0≤b≤1.00, 0.02≤d≤0.15, and 0.03≤a+d≤1.00. At least one element selected from Mn, Mg, Co, V, W, Mo, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.