US 11,728,094 B2
Dielectric ceramic composition and multilayer ceramic electronic component having the same
Seok Hyun Yoon, Suwon-si (KR); Chan Hee Nam, Suwon-si (KR); Song Je Jeon, Suwon-si (KR); and Chang Hak Choi, 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 Mar. 11, 2022, as Appl. No. 17/692,529.
Application 17/692,529 is a continuation of application No. 16/777,182, filed on Jan. 30, 2020, granted, now 11,309,129.
Claims priority of application No. 10-2019-0078009 (KR), filed on Jun. 28, 2019; and application No. 10-2019-0094914 (KR), filed on Aug. 5, 2019.
Prior Publication US 2022/0199327 A1, Jun. 23, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01G 4/12 (2006.01); H01G 4/30 (2006.01)
CPC H01G 4/1227 (2013.01) [H01G 4/30 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A dielectric ceramic composition comprising:
a base material main component of barium titanate and a subcomponent,
wherein a microstructure of the dielectric ceramic composition after sintering includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %, and
an area ratio of the second grain to an area of a sum of the first and second grains is 70% to 95%,
wherein the base material main component excludes CaZrO3.