US 11,854,746 B2
Dielectric ceramic composition and multilayer ceramic capacitor comprising the same
Jeong Yun Park, Suwon-si (KR); Jae Sung Park, Suwon-si (KR); Kyung Sik Kim, 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 Oct. 4, 2022, as Appl. No. 17/959,961.
Application 17/959,961 is a continuation of application No. 16/774,651, filed on Jan. 28, 2020, granted, now 11,501,918.
Claims priority of application No. 10-2019-0089740 (KR), filed on Jul. 24, 2019.
Prior Publication US 2023/0049469 A1, Feb. 16, 2023
Int. Cl. H01G 4/12 (2006.01); C04B 35/468 (2006.01)
CPC H01G 4/1227 (2013.01) [C04B 35/468 (2013.01); C04B 35/4682 (2013.01); C04B 2235/40 (2013.01)] 19 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 connected to the first internal electrode and the second external electrode being 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 comprising dysprosium (Dy) and praseodymium (Pr) as first accessory ingredients,
a content of the Pr satisfies 0.233 mol %≤Pr≤0.699 mol %, based on 100 mol % of the barium titanate base material main ingredient, and
the first accessory ingredients further comprise an oxide or carbonate comprising lanthanum (La), and a grain boundary between the dielectric grains comprises a region in which La is disposed.