US-12626866-B2 - Method of manufacturing a multilayer ceramic capacitor

US12626866B2US 12626866 B2US12626866 B2US 12626866B2US-12626866-B2

Abstract

A method of manufacturing a multilayer ceramic capacitor including printing a titanium oxide-based material on a region between a plurality of internal electrode patterns of one surface of each of a plurality of ceramic green sheets on which the plurality of internal electrode patterns are respectively disposed; and cutting the region between the plurality of internal electrode patterns in a first direction in a structure in which the plurality of ceramic green sheets are stacked in the first direction.

Inventors

Hyuk Jin Hong
Young Hoon Song

Assignees

SAMSUNG ELECTRO-MECHANICS CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20231025
Priority Date: 20221129

Claims (5)

1 . A method for manufacturing a multilayer ceramic capacitor, comprising: printing a titanium oxide-based material on a region between a plurality of internal electrode patterns of one surface of each of a plurality of ceramic green sheets on which the plurality of internal electrode patterns are respectively disposed; and cutting the region between the plurality of internal electrode patterns in a first direction in a structure in which the plurality of ceramic green sheets are stacked in the first direction.
2 . The method of claim 1 , after the cutting, further comprising sintering the structure in which the plurality of ceramic green sheets are stacked in the first direction.
3 . The method of claim 1 , wherein the printing comprises printing the plurality of internal electrode patterns and the titanium oxide-based material by a gravure method.
4 . The method of claim 1 , wherein the printing comprises printing the titanium oxide-based material such that the titanium oxide-based material is spaced apart from the plurality of internal electrode patterns.
5 . The method of claim 1 , wherein the printing comprises printing the titanium oxide-based material such that at least a portion of the titanium oxide-based material is inserted into each of the plurality of ceramic green sheets.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims benefit of priority to Korean Patent Application No. 10-2022-0162354 filed on Nov. 29, 2022 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD The present disclosure relates to a multilayer ceramic capacitor and a method for manufacturing the multilayer ceramic capacitor. A multilayer ceramic capacitor may be widely used as an electronic device component such as a computer, a PDA, a mobile phone, or the like due to its small size, high capacitance, and easy mounting, and may be also widely used as an electrical device (including a vehicle) component due to its high reliability and high strength. When a multilayer ceramic capacitor is used in an electronic device, the multilayer ceramic capacitor may be miniaturized, and large capacitance of the multilayer ceramic capacitor, relative to its volume, may become more important. Importance for improving strength or reducing a crack generation rate in a multilayer ceramic capacitor having an advantageous structure for forming large capacitance relative to its volume may increase. When a multilayer ceramic capacitor is used in an electrical device, the multilayer ceramic capacitor may be exposed to harsh environments (e.g., possibilities of high voltage, high temperature, external impact, and the like), and improving strength or reducing a crack generation rate may become important for securing reliability in the harsh environments. SUMMARY An aspect of the present disclosure is to provide a multilayer ceramic capacitor and a method for manufacturing the multilayer ceramic capacitor, efficiently improving strength or reducing a crack generation rate. According to an aspect of the present disclosure, a multilayer ceramic capacitor includes a body including a capacitance region in which at least one first internal electrode and at least one second internal electrode are alternately stacked in a first direction with at least one dielectric layer interposed therebetween; and first and second external electrodes disposed on the body to be spaced apart from each other with the capacitance region interposed therebetween in a second direction, different from the first direction, and respectively connected to the at least one first internal electrode and the at least one second internal electrode, wherein the body further includes a plurality of margin regions disposed with the capacitance region interposed therebetween in a third direction, different from the first and second directions, wherein each of the plurality of margin regions includes a second margin region and a first margin region disposed between the second margin region and the capacitance region, and wherein a size of a crystal grain in the second margin region is larger than a size of a crystal grain in the first margin region. According to another aspect of the present disclosure, a method for manufacturing a multilayer ceramic capacitor, includes printing a titanium oxide-based material on a region between a plurality of internal electrode patterns of one surface of each of a plurality of ceramic green sheets on which the plurality of internal electrode patterns are respectively disposed; and cutting the region between the plurality of internal electrode patterns in a first direction in a structure in which the plurality of ceramic green sheets are stacked in the first direction. BRIEF DESCRIPTION OF DRAWINGS The above and other aspects, features, and advantages of the present disclosure will be more clearly understood from the following detailed description, taken in conjunction with the accompanying drawings, in which: FIG. 1 is a perspective view illustrating a multilayer ceramic capacitor according to an embodiment of the present disclosure. FIGS. 2A and 2B are cross-sectional views illustrating a difference in size of a crystal grain in the margin region of FIG. 1, taken along line I-I′. FIG. 3A is a cross-sectional view of FIG. 1, taken along line II-II′. FIG. 3B is a cross-sectional view illustrating an external electrode of a multilayer ceramic capacitor according to an embodiment of the present disclosure. FIG. 4A is a perspective view illustrating a printing operation in a method of manufacturing a multilayer ceramic capacitor according to an embodiment of the present disclosure. FIG. 4B is an enlarged side view of portion MP of FIG. 4A. FIG. 5 is a view illustrating a cutting operation in a method of manufacturing a multilayer ceramic capacitor according to an embodiment of the present disclosure. FIG. 6 is a view illustrating a sintering operation in a method of manufacturing a multilayer ceramic capacitor according to an embodiment of the present disclosure. FIG. 7A illustrates photographs of cross-sections of a second margin region in a multilayer ceramic capacitor according to an embodiment of the present disclosure. FIG. 7B illustrates phot