Method of manufacturing multilayer ceramic capacitor having groove portion on top and/or bottom surface

Patent metadata

Field	Value
Publication number	US-9779873-B2
Application number	US-201414206898-A
Country	US
Kind code	B2
Filing date	Mar 12, 2014
Priority date	Mar 9, 2011
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

There are provide a multilayer ceramic capacitor and a method of manufacturing the same. The multilayer ceramic capacitor includes a multilayer body having a first side and a second side opposed to each other and having a third side and a fourth side connecting the first side to the second side, inner electrodes formed in the multilayer body and formed to be spaced apart from the third side or the fourth side by a predetermined distance, groove portions formed on at least one of top and bottom surfaces of the multilayer body and formed parallel to the third or fourth side by a predetermined distance from the third side or the fourth side, and outer electrodes extended from the third side and the fourth side to the top surface or the bottom surface of the multilayer body to cover the groove portions.

First claim

What is claimed is:

1. A method of manufacturing a multilayer ceramic capacitor, comprising:
preparing a first ceramic green sheet on which a plurality of stripe-type first inner electrode patterns are formed to be spaced apart from one another by a predetermined distance and a second ceramic green sheet on which a plurality of stripe-type second inner electrode patterns are formed to be spaced apart from one another by a predetermined distance;
forming a ceramic green sheet laminate by alternately stacking the first ceramic green sheet and the second ceramic green sheet in such a manner that a central portion of each of the stripe-type first inner electrode patterns and a predetermined distance between the stripe-type second inner electrode patterns overlap with each other;
forming first and second groove portions on at least one of a top surface and a bottom surface of the ceramic green sheet laminate, wherein the first groove portions are formed at locations aligned, in a stacking direction of the ceramic green sheet laminate, with the predetermined distance formed between the stripe-type first inner electrode patterns formed on the first ceramic green sheet, and the second groove portions are formed at locations aligned, in the stacking direction of the ceramic green sheet laminate, with the predetermined distance formed between the stripe-type second inner electrode patterns formed on the second ceramic green sheet; and
cutting the ceramic green sheet laminate,
wherein the cutting of the ceramic green sheet laminate is performed by cutting the ceramic green sheet laminate at a predetermined width such that the ceramic green sheet is cut into bar-type laminates, each bar-type laminate having sides to which the distal edges of first inner electrodes and second inner electrodes are exposed, and groove portions formed in a width direction thereof, and
the cutting of the ceramic green sheet laminate further includes forming a first side portion and a second side portion made of ceramic slurry at the sides of the bar-type laminate to which the distal edges of the first inner electrode and the second inner electrode are exposed.

2. The method of claim 1 , further comprising after the forming of the first and second side portions, cutting the bar-type laminate into multilayer bodies, each multilayer body having a third side and a fourth side to which respective one ends of the first inner electrodes and the second inner electrodes are exposed, by cutting the central portion of each of the first inner electrodes and a predetermined distance between the second inner electrodes along the same cutting line.

3. The method of claim 2 , further comprising forming outer electrodes extending from the third or fourth side of the multilayer body to the top surface or the bottom surface of the multilayer body to cover the groove portions.

4. A method of manufacturing a multilayer ceramic capacitor, comprising:
preparing a first ceramic green sheet on which a plurality of stripe-type first inner electrode patterns are formed to be spaced apart from one another by a predetermined distance and a second ceramic green sheet on which a plurality of stripe-type second inner electrode patterns are formed to be spaced apart from one another by a predetermined distance;
forming a ceramic green sheet laminate by alternately stacking the first ceramic green sheet and the second ceramic green sheet in such a manner that a central portion of each of the stripe-type first inner electrode patterns and a predetermined distance between the stripe-type second inner electrode patterns overlap with each other;
forming groove portions on at least one of a top surface and a bottom surface of the ceramic green sheet laminate at locations corresponding to a predetermined distance formed between the stripe-type first inner electrode patterns and a predetermined distance formed between the stripe-type second inner electrode patterns; and
cutting the ceramic green sheet laminate,
wherein the cutting of the ceramic green sheet laminate may be performed by cutting the ceramic green sheet laminate at a predetermined width such that the ceramic green sheet is cut into bar-type laminates, each bar-type laminate having sides to which the distal edges of first inner electrodes and second inner electrodes are exposed, and groove portions formed in a width direction thereof; and cutting the bar-type laminate into multilayer bodies, each multilayer body having a third side and a fourth side to which respective one ends of the first inner electrodes and the second inner electrodes are exposed, by cutting the central portion of each of the first inner electrodes and a predetermined distance between the second inner electrodes along the same cutting line, and
the cutting of the ceramic green sheet laminate further includes forming the first and second side portions made of ceramic slurry on the sides of the multilayer body to which the distal edges of the first inner electrodes and the second inner electrodes are exposed.

5. The method of claim 4 , further comprising forming outer electrodes extending from the third or fourth side of the multilayer body to the top surface or the bottom surface of the multilayer body to cover the groove portions.

Assignees

• Samsung Electro Mech

Inventors

• Kim Hyung Joon

Classifications

• H01G4/005

  Electrodes · CPC title

• H01G4/248

  the terminals embracing or surrounding the capacitive element, e.g. caps (H01G4/252 takes precedence) · CPC title

• H01G4/30

  Stacked capacitors (H01G4/33 takes precedence) · CPC title

• Y10T29/435

  Solid dielectric type · CPC title

• H01G4/12 Primary

  Ceramic dielectrics {(H01G4/085 takes precedence)} · CPC title