# US 10,312,021 B2 · Dielectric composition and multilayer ceramic capacitor having the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,312,021 B2 - Document ID: US10312021B2 - Status: Granted - Kind: B2 - Application number: 15/676,481 - Filed: 2017-08-14 - Published: 2018-06-28 - Granted: 2019-06-04 - Earliest claimed: 2016-12-22 - Assignees: Samsung Electro-Mechanics Co., Ltd.; Korea Advanced Institute of Science and Technology - Applicants: Samsung Electro-Mechanics Co., Ltd.; Korea Advanced Institute of Science & Technology - Inventors: Kum Jin Park; Chang Yeon Baek; Ji Eun Wang; Do Kyung Kim - Web page: https://patentgrep.com/patent/US10312021B2 ## CPC - H01G 4/1218: {based on titanium oxides or titanates (H01G4/1245 takes precedence)} - C01G 23/006: {Alkaline earth titanates} - H01G 4/248: the terminals embracing or surrounding the capacitive element, e.g. caps (H01G4/252 takes precedence) - H01G 4/30: Stacked capacitors (H01G4/33 takes precedence) - C01P 2004/03: obtained by SEM - C01P 2004/10: extending in one dimension, e.g. needle-like - C01P 2004/17: Nanostrips, nanoribbons or nanobelts, i.e. solid nanofibres with two significantly differing dimensions between 1-100 nanometer - C01P 2004/24: Nanoplates, i.e. plate-like particles with a thickness from 1-100 nanometer - C01P 2004/54: Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20) - C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS ## Abstract A dielectric composition is a barium titanate-based dielectric composition and includes a barium titanate particle including a major axis, a minor axis disposed on the same plane as the major axis, and a vertical axis perpendicular to both the major axis and the minor axis, and a ratio of a length of the major axis to a length of the vertical axis is within a range from 1.5:1 to 30:1. ## Claims ### Claim 1 A dielectric composition, wherein the dielectric composition is a barium titanate-based dielectric composition, and includes a particle including a major axis, a minor axis disposed on the same plane as the major axis, and a vertical axis perpendicular to both the major axis and the minor axis and having a ratio of a length of the major axis to a length of the vertical axis that ranges from 1.5:1 or greater to 30:1 or less, and wherein a length of the minor axis is within a range from 20 nm to 500 nm. ### Claim 2 (depends on 1) The dielectric composition of claim 1, wherein a ratio of the length of the major axis to a length of the minor axis is within a range from 1:1 to 30:1. ### Claim 3 (depends on 1) The dielectric composition of claim 1, wherein the length of the major axis is within a range from 50 nm to 2000 nm. ### Claim 4 (depends on 1) The dielectric composition of claim 1, wherein the length of the vertical axis is within a range from 10 nm to 200 nm. ### Claim 5 (depends on 1) The dielectric composition of claim 1, wherein the particle has a plate shape. ### Claim 6 (depends on 1) The dielectric composition of claim 1, wherein the particle has a ribbon shape. ### Claim 7 A multilayer ceramic capacitor, comprising: a body including a plurality of stacked dielectric sheets; and external electrodes disposed on an outer surface of the body, wherein each of the plurality of dielectric sheets in the body includes a dielectric grain of a dielectric composition, the dielectric grain includes a major axis, a minor axis disposed on the same plane as the major axis, and a vertical axis perpendicular to both the major axis and the minor axis, a ratio of a length of the vertical axis to a length of the major axis is within a range from 2:1 to 100:1, and the body further includes an internal electrode printed on each of the plurality of dielectric sheets, and the vertical axis of the dielectric grain is disposed to be parallel with the thickness direction of the internal electrode. ### Claim 8 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein the length of the vertical axis is equal to or less than 100 nm. ### Claim 9 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein the ratio of the length of the vertical axis to the length of the major axis in the entire area of the dielectric grain included in each dielectric sheet is greater than or equal to 2:1, and the dielectric grain is included as 10 area % or greater. ### Claim 10 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein the ratio of the length of the vertical axis to the length of the major axis in the entire area of the dielectric grain included in each dielectric sheet is greater than or equal to 3:1, and the dielectric grain is included as 3 area % or more. ### Claim 11 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein the ratio of the length of the vertical axis to the length of the major axis in the entire area of the dielectric grain included in each dielectric sheet is greater than or equal to 10:1, and the dielectric grain is included as 0.1 area % or more. ### Claim 12 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein the number of grains aligned along the minor axis in each of the plurality of dielectric sheets ranges from 2 to 20. ### Claim 13 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein the dielectric grain in each of the plurality of dielectric sheets are stacked in a number of 2 to 20 on average, along a vertical axis direction. ### Claim 14 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein a length of the minor axis is within a range from 20 nm to 500 nm. ### Claim 15 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein the length of the major axis is within a range from 50 nm to 2000 nm. ### Claim 16 (depends on 7) The multilayer ceramic capacitor of claim 7, wherein the length of the vertical axis is within a range from 10 nm to 200 nm.