US 9,812,260 B2
Multilayer ceramic capacitor
Daiki Fukunaga, Nagaokakyo (JP); Hideaki Tanaka, Nagaokakyo (JP); and Koji Moriyama, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu (JP)
Filed on Jan. 26, 2017, as Appl. No. 15/415,986.
Application 15/415,986 is a continuation of application No. 14/711,975, filed on May 14, 2015, granted, now 9,633,788.
Claims priority of application No. 2014-105588 (JP), filed on May 21, 2014; and application No. 2015-075012 (JP), filed on Apr. 1, 2015.
Prior Publication US 2017/0133157 A1, May 11, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. H01G 4/30 (2006.01); H01G 4/248 (2006.01); H01G 4/012 (2006.01); H01G 4/12 (2006.01)
CPC H01G 4/30 (2013.01) [H01G 4/012 (2013.01); H01G 4/1227 (2013.01); H01G 4/248 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A multilayer ceramic capacitor comprising:
a ceramic body including a first end surface and a second end surface opposite to the first end surface, a first side surface and a second side surface perpendicular or substantially perpendicular to the first end surface and the second end surface, and a first major surface and a second major surface perpendicular or substantially perpendicular to the first end surface and the first side surface, and including a plurality of dielectric ceramic layers of a perovskite-type compound containing Ba and Ti, and internal electrode layers stacked on one another in a direction extending from the first major surface to the second major surface with a respective one of the plurality of dielectric ceramic layer between each adjacent pair of the internal electrodes; and
external electrodes provided on the ceramic body at the first end surface and the second end surface, respectively; wherein the internal electrodes includes a first internal electrode and a second internal electrode;
each of the first internal electrode and the second internal electrode extends out to a respective one of the first end surface and the second end surface, and is electrically connected to a respective one of the external electrodes;
when the ceramic body is seen in a direction in which the layers are stacked, the ceramic body includes a region free of the first internal electrode and the second internal electrode defining a side margin portion;
a first outer layer portion is provided between a first outermost internal electrode of the internal electrodes and the first major surface;
a second outer layer portion is provided between a second outermost internal electrode of the internal electrodes and the second major surface;
opposed sides of the first and second outer layer portions are covered by the side margin portion; and the side margin portion covering the opposed sides of the first and second outer layer portions has a multilayer structure, wherein the side margin portion has a physical boundary between the layers of the multilayer structure.