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公开(公告)号：US11699553B2
公开(公告)日：2023-07-11
申请号：US17325110
申请日：2021-05-19
发明人： Yuto Yamato , Takashi Asai , Takayuki Hattori
IPC分类号： H01G4/30 , H01G4/012 , H01G4/008 , C04B35/468 , H01G4/12
CPC分类号： H01G4/30 , C04B35/4682 , H01G4/008 , H01G4/012 , H01G4/1227 , C04B2235/66
摘要： A ceramic electronic component includes a multilayer chip having a substantially rectangular parallelepiped shape and including a first multilayer structure and a second multilayer structure disposed on each of top and bottom faces of the first multilayer structure, the first multilayer structure including first ceramic dielectric layers having a first width in a first direction in which side faces of the multilayer chip are opposite to each other, the second multilayer structure including second internal electrode layers having a second width less than the first width in the first direction, and a pair of external electrodes formed from the respective two edge faces to at least one of side faces of the multilayer chip, wherein main components of the first and second internal electrode layers differ from a main component of the external electrodes.
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公开(公告)号：US20230208395A1
公开(公告)日：2023-06-29
申请号：US17991259
申请日：2022-11-21
发明人： Shinji YAMAMOTO , Koichi SATO , Toshiharu NAKAZATO
CPC分类号： H03H9/25 , H01L41/313 , H03H9/725 , H03H9/02559 , H03H9/6483 , H03H9/14541
摘要： An acoustic wave device includes a support substrate, a piezoelectric layer provided on the support substrate, at least a pair of comb-shaped electrodes provided on the piezoelectric layer, each of the comb-shaped electrodes including a plurality of electrode fingers, and an insulating layer provided between the support substrate and the piezoelectric layer, the insulating layer having, in at least a part thereof, a plurality of void regions of which extending directions are different from each other when viewed from a thickness direction of the support substrate, a width in the corresponding extending direction of each of the void regions being longer than a width in a direction orthogonal to the corresponding extending direction when viewed from the thickness direction of the support substrate.
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公开(公告)号：US20230208377A1
公开(公告)日：2023-06-29
申请号：US18076936
申请日：2022-12-07
发明人： Toshiyuki SAITO
CPC分类号： H03H7/0115 , H01F27/2804 , H03H7/46
摘要： A filter includes a first resonance circuit including a first capacitor and a first inductor connected in parallel between a ground terminal and a first node electrically connected to a first signal terminal not through any capacitor, no inductor being connected in series with the first capacitor between the first node and the ground terminal, a second resonance circuit including a second capacitor and a second inductor connected in parallel between the ground terminal and a second node electrically connected to a second signal terminal not through any capacitor, and a third resonance circuit including a third capacitor and a third inductor connected in parallel between a third node, located in a path through which a high-frequency signal is transmitted between the first and second nodes, and the ground terminal, and a first series inductor connected in series with the third capacitor between the third node and the ground terminal.
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公开(公告)号：US20230207219A1
公开(公告)日：2023-06-29
申请号：US18076291
申请日：2022-12-06
发明人： Maiko YAMANE
IPC分类号： H01G4/30 , H01G4/012 , H01G4/008 , C04B35/468 , H01G4/224
CPC分类号： H01G4/30 , H01G4/012 , H01G4/008 , C04B35/4682 , H01G4/224
摘要： A ceramic electronic component includes a multilayer body in which internal electrodes are stacked in a first axis direction, the multilayer body having side faces perpendicular to a second axis direction that is orthogonal to the first axis direction, ends of the internal electrodes being positioned at the side faces and aligned within a range of 0.5 μm in the second axis direction; and side margin portions covering the side faces, respectively, the side margin portions including a ceramic polycrystal as a main component and glass grains dispersed in the polycrystal, a total volume ratio of the glass grains with respect to the polycrystal being 1% or more and 20% or less, a median diameter of the glass grains is 0.20 μm or more and less than 0.75 μm, and is 90% or more of a median diameter of crystal grains constituting the polycrystal.
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75.发明公开公开(公告)号：US20230187132A1
公开(公告)日：2023-06-15
申请号：US17988922
申请日：2022-11-17
发明人： Ryo ONO , Tetsuhiko FUKUOKA , Shoji KUSUMOTO
摘要： A circuit board includes a multilayer ceramic electronic component; and a mounting board mounting the multilayer ceramic electronic component thereon, wherein the multilayer ceramic electronic component comprises: a ceramic main body having a dimension in the first axis direction of the ceramic main body of 0.1 mm or more, and a ratio of a dimension in the second axis direction of the ceramic main body to the dimension in the first axis direction of 130 or more, a plurality of internal electrodes laminated inside the ceramic main body in the first axis direction, and both edges of the plurality of internal electrodes in the second axis direction being aligned with each other within 0.5 μm in the second axis direction, and external electrodes respectively covering the end surfaces, and wherein the mounting board faces the second principal surface of the multilayer ceramic electronic component mounted thereon.
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公开(公告)号：US20230172071A1
公开(公告)日：2023-06-01
申请号：US17987216
申请日：2022-11-15
发明人： Yuta TSUDA
IPC分类号： H01L41/047 , H01L41/22 , H01L41/187 , H03H9/54
CPC分类号： H01L41/0477 , H01L41/22 , H01L41/187 , H03H9/54
摘要： A piezoelectric thin film resonator includes a substrate, a lower electrode provided over the substrate, a piezoelectric layer provided on the lower electrode, an upper electrode provided on the piezoelectric layer, the lower electrode and the upper electrode sandwiching at least a part of the piezoelectric layer therebetween to form a resonance region, and an acoustic mirror provided between the substrate and the lower electrode, the acoustic mirror including one or more first layers and second layers that are alternately stacked, each of the one or more first layers having an end face inclined such that a first surface at the lower electrode side is larger than a second surface at the substrate side and having an edge positioned outside the resonance region in a plan view, the second layers being made of a material different from a material of the one or more first layers.
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公开(公告)号：US11664167B2
公开(公告)日：2023-05-30
申请号：US17104682
申请日：2020-11-25
发明人： Yoichi Kato
CPC分类号： H01G4/30 , H01G4/008 , H01G4/012 , H01G4/1218
摘要： A multi-layer ceramic electronic component includes: a multi-layer unit including ceramic layers laminated in a direction of a first axis, internal electrodes disposed between the ceramic layers, and first and second side surfaces on which end portions of the internal electrodes in a direction of a second axis orthogonal to the first axis are positioned; and first and second side margins that cover the first and second side surfaces, respectively. When the first and second side margins are each divided equally into first and second regions along a plane perpendicular to the direction of the first axis, the first side margin has a larger average thickness in the first region than in the second region, and the second side margin has a larger average thickness in the second region than in the first region.
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公开(公告)号：US20230128407A1
公开(公告)日：2023-04-27
申请号：US17944567
申请日：2022-09-14
发明人： Hidetoshi MASUDA
摘要： A ceramic electronic device includes a multilayer body in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked. In at least a part of a cover layer and side margins, a concentration of a specific metal of at least one of Ag, As, Au, Bi, Co, Cr, Cu, Fe, Ge, In, Ir, Mo, Os, Pd, Pt, Re, Rh, Ru, Se, Sn, Te, W or Zn is lower on an outer side than on a side of the multilayer body.
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公开(公告)号：US11631543B2
公开(公告)日：2023-04-18
申请号：US17498558
申请日：2021-10-11
发明人： Ryo Ono , Tetsuhiko Fukuoka , Shoji Kusumoto , Akihiko Kono
摘要： A multi-layer ceramic electronic component includes a ceramic body and an external electrode, the ceramic body including a protective portion and a functional portion, the protective portion including an end surface facing in a first direction, circumferential surfaces connected to the end surface and extending in the first direction, and a ridge that includes a recess extending along the first direction and connects the circumferential surfaces, the functional portion being disposed inside the protective portion, the external electrode including a base film covering the end surface, an intermediate film formed on the base film, and a surface film formed on the intermediate film, the base film including a first covering portion formed on the end surface, second covering portions formed on the circumferential surfaces, and a third covering portion formed on the recess and spaced apart from at least one second covering portion, the intermediate film continuously covering the first, second, and third covering portions.
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公开(公告)号：US11631524B2
公开(公告)日：2023-04-18
申请号：US17326139
申请日：2021-05-20
发明人： Yoshikazu Maruyama , Noriyuki Mabuchi , Ichiro Yokoyama , Masataka Kohara , Keiichi Nozawa , Masakazu Okazaki , Hideaki Hoshino , Tomoyuki Oyoshi , Takehumi Yamada , Chikako Yoshida
摘要： In an exemplary embodiment, a coil component includes: an element body part 10 and a coil 30 of spiral shape constituted by multiple turn units 32 connected in a coil axial direction; wherein each turn unit 32 has, in a cross-sectional view in the width direction of the turn unit 32, a flat side 40 that extends in a second direction substantially perpendicular to the coil axis of the coil 30; and the point of intersection 48 between a figure line 42 corresponding to the longest part in a first direction, and a figure line 44 corresponding to the longest part in the second direction, with respect to the coil axis, is positioned on the figure line 42 within one-quarter of the figure line away from one end 50 on the side 40 or from the other end 52 opposing the side 40.
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