US 12,444,536 B2
Dielectric ceramic composition and multilayer ceramic capacitor comprising the same
In Tae Seo, Suwon-si (KR); Kyung Sik Kim, Suwon-si (KR); Sea Hanna Doo, Suwon-si (KR); and Ji Hong Jo, 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 Jun. 30, 2023, as Appl. No. 18/216,862.
Application 18/216,862 is a continuation of application No. 17/512,176, filed on Oct. 27, 2021, granted, now 11,735,362.
Application 17/512,176 is a continuation of application No. 16/788,063, filed on Feb. 11, 2020, granted, now 11,302,475, issued on Apr. 12, 2022.
Claims priority of application No. 10-2019-0101517 (KR), filed on Aug. 20, 2019.
Prior Publication US 2023/0343518 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01G 4/12 (2006.01); C04B 35/468 (2006.01); H01G 4/30 (2006.01)
CPC H01G 4/1227 (2013.01) [C04B 35/4682 (2013.01); H01G 4/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multilayer ceramic capacitor, comprising:
a ceramic body comprising dielectric layers and first and second internal electrodes disposed to face each other with respective dielectric layers interposed therebetween; and
a first external electrode and a second external electrode disposed on external surfaces of the ceramic body, the first external electrode being electrically connected to the first internal electrode and the second external electrode being electrically connected to the second internal electrode,
wherein the dielectric layers comprise dielectric grains comprising a dielectric ceramic composition,
the dielectric ceramic composition comprises a barium titanate (BaTiO3)-based base material main ingredient and an accessory ingredient,
the accessory ingredient comprises a first accessory ingredient comprising dysprosium (Dy) and cerium (Ce),
a total content of Dy and Ce is greater than 0.24 mol and equal to or less than 1.0 mol based on 100 mol of the base material main ingredient,
the dielectric ceramic composition comprises 0.001 mol to 0.5 mol of a third accessory ingredient based on 100 mol of the base material main ingredient, and
the third accessory ingredient comprises magnesium (Mg).