US 11,728,093 B2
Multilayer capacitor
Jeong In Kim, Suwon-si (KR); Min Jun Kim, Suwon-si (KR); Byung Kil Seo, Suwon-si (KR); and Mi Ok Park, Suwon-si (KR)
Assigned to SAMSUNG ELECTRO-MECHANICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRO-MECHANICS CO., LTD., Suwon-si (KR)
Filed on Jul. 15, 2022, as Appl. No. 17/865,968.
Application 17/865,968 is a continuation of application No. 16/901,534, filed on Jun. 15, 2020, granted, now 11,515,091.
Claims priority of application No. 10-2019-0114337 (KR), filed on Sep. 17, 2019; and application No. 10-2020-0057564 (KR), filed on May 14, 2020.
Prior Publication US 2022/0351904 A1, Nov. 3, 2022
Int. Cl. H01G 4/12 (2006.01); H01G 4/30 (2006.01); H01G 2/06 (2006.01); H01G 4/012 (2006.01)
CPC H01G 4/12 (2013.01) [H01G 2/065 (2013.01); H01G 4/012 (2013.01); H01G 4/30 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A multilayer capacitor, comprising:
a capacitor body in which a first capacitor portion and a second capacitor portion are disposed to face each other with a connection region disposed therebetween, the connection region having a predetermined thickness in which no internal electrode is disposed; and
first and second external electrodes disposed on respective end portions of the capacitor body opposite each other in a longitudinal direction,
wherein the first capacitor portion comprises first and second internal electrodes alternately disposed and exposed through respective surfaces of the first capacitor portion opposing each other in the longitudinal direction, and having a dielectric layer interposed between the first and second internal electrodes,
the second capacitor portion comprises third and fourth internal electrodes alternately disposed and exposed through respective surfaces of the second capacitor portion opposing each other in the longitudinal direction, and having a dielectric layer interposed between the third and fourth internal electrodes,
the predetermined thickness of the connection region is larger than thicknesses of the dielectric layers of the first and second capacitor portions,
the first external electrode comprises a first internal layer connected to the first and third internal electrodes and containing copper (Cu), and a first external layer covering the first internal layer and containing silver (Ag) and palladium (Pd),
the second external electrode comprises a second internal layer connected to the second and fourth internal electrodes and containing copper, and a second external layer covering the second internal layer and containing silver and palladium,
at least one of the first external layer or the second external layer includes a fired electrode layer, and
wherein the dielectric layer comprises BaCaTiO3 (BCT) or BaTiO3 (BT)+BCT.