Multilayer ceramic capacitor, manufacturing method of the same, and circuit board with multilayer ceramic capacitor mounted thereon

A method of manufacturing a multilayer ceramic capacitor, the method comprising:

• preparing a plurality of first and second ceramic green sheets;
• forming a first internal electrode on the first ceramic green sheet, the first internal electrode including a first pattern portion and a first non-pattern portion and the first pattern portion being exposed to an end surface of the first ceramic green sheet;
• forming a second internal electrode on the second ceramic green sheet, the second internal electrode including a second non-pattern portion and a second pattern portion having an overlap region with the first pattern portion and the second pattern portion being exposed to an end surface of the second ceramic green sheet;
• alternately laminating the first and second ceramic green sheets and firing the same to fabricate a ceramic body in which end portions of the first and second pattern portions are exposed to one or more of the first and second lateral surfaces and the first and second end surfaces;
• applying a resin to an outer surface of the ceramic body on which external electrodes are to be formed, to seal exposed end portions of the first and second pattern portions to be connected to the external electrodes;
• oxidizing an unsealed region of the end portions of the first and second pattern portions exposed to the outer surface of the ceramic body to form metal oxide regions;
• and
• removing the resin and subsequently forming first and second external electrodes electrically connected to the first and second internal electrodes, respectively.

A method of manufacturing a multilayer ceramic capacitor, the method comprising:

• preparing a plurality of first and second ceramic green sheets;
• forming a first internal electrode on the first ceramic green sheet, the first internal electrode including a first pattern portion and a first non-pattern portion and the first pattern portion being exposed to an end surface of the first ceramic green sheet;
• forming a second internal electrode on the second ceramic green sheet, the second internal electrode including a second non-pattern portion and a second pattern portion having an overlap region with the first pattern portion and the second pattern portion being exposed to an end surface of the second ceramic green sheet;
• alternately laminating the first and second ceramic green sheets and firing the same to fabricate a ceramic body in which end portions of the first and second pattern portions are exposed to one or more of the first and second lateral surfaces and the first and second end surfaces;
• forming first and second external electrodes connected to the first and second internal electrodes, respectively;
• and
• oxidizing regions, which are not connected to the external electrodes, of the end portions of the first and second pattern portions exposed to the outer surface of the ceramic body, to form metal oxide regions,
• wherein the first and second external electrodes are made of a conductive resin composition.

A circuit board with a multilayer ceramic capacitor mounted thereon, the circuit board comprising:

• a printed circuit board having first and second electrode pads formed on an upper portion thereof;
• and
• a multilayer ceramic capacitor mounted on the printed circuit board,
• wherein the multilayer ceramic capacitor comprises:
• a ceramic body having first and second main surfaces opposing one another, first and second lateral surfaces opposing one another, and first and second end surfaces opposing one another;
• a first internal electrode having a first pattern portion exposed to one or more of the first and second lateral surfaces and the first and second end surfaces and a first non-pattern portion formed in a first corner portion of the ceramic body;
• a second internal electrode having a region overlapped with the first pattern portion with the dielectric layer interposed therebetween, the overlap region having a second pattern portion exposed to one or more of the first and second lateral surfaces and the first and second end surfaces and a second non-pattern portion formed in a second corner portion;
• and first and second external electrodes connected to the first and second internal electrodes, respectively, wherein the first and second pattern portions have a metal oxide region having a predetermined width from an exposed end portion of a region thereof not connected to the first or the second external electrode, among exposed regions, toward a central portion thereof, respectively.