Ceramic, Glass, Or Oxide Particles Patents (Class 361/321.1)
  • Patent number: 10312021
    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.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: June 4, 2019
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Kum Jin Park, Chang Yeon Baek, Ji Eun Wang, Do Kyung Kim
  • Patent number: 10128051
    Abstract: A variable capacitance component includes a variable capacitance layer made of a dielectric material, a pair of electrodes that face each other via the variable capacitance layer, a pair of insulating portions that support the variable capacitance layer therebetween, and a pair of lead portions is respectively connected to the pair of electrodes, and the pair of lead portions is respectively disposed inside the pair of insulating portions, and the pair of lead portions is on a same axis that is perpendicular or substantially perpendicular to the variable capacitance layer.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: November 13, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Keisuke Kageyama
  • Patent number: 9966199
    Abstract: A supercapacitor electrode comprising a solid graphene foam impregnated with a liquid or gel electrolyte, wherein the solid graphene foam is composed of multiple pores and pore walls, wherein pore walls contain a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 5% by weight of non-carbon elements wherein non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, or a combination thereof, and the solid graphene foam, when measured in a dried state without electrolyte, has a physical density from 0.01 to 1.7 g/cm3, a specific surface area from 50 to 3,200 m2/g, a thermal conductivity of at least 200 W/mK per unit of specific gravity, and/or an electrical conductivity no less than 2,000 S/cm per unit of specific gravity.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: May 8, 2018
    Assignee: Nanotek Instruments, Inc.
    Inventors: Aruna Zhamu, Bor Z Jang
  • Patent number: 9935253
    Abstract: A piezoelectric device is a fired body including a body part 10 and external electrodes 21 and 22. A surface of the side electrode 22 is comprised only of a material for the side electrode 22. On a surface of the surface electrode 21 or a surface of a connection portion where the surface electrode 21 and the side electrode 22 are connected to each other, a protrusion h extending along a direction along which the connection portion extends and sticking out in a thickness direction of the surface electrode 21 is provided. A region, on the surface of the surface electrode 21, farther from the connection portion than the protrusion h is interspersed with a plurality of exposed portions in each of which a surface of a ceramic material having lower solder wettability than a material for the surface electrode 21 is exposed.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: April 3, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Masayuki Uetani, Takaaki Koizumi, Izumi Masuda, Takeshi Kaku
  • Patent number: 9929468
    Abstract: The variable capacitance device includes one or more of directional elements inserted between the third and fourth terminals that allow current to pass only in prescribed directions, such that a diagram formed of current paths from the third terminal to the fourth terminal for the plurality of third-terminal side resistors and the plurality of fourth-terminal side resistors when the third terminal is biased higher than the fourth terminal is line-symmetric to a diagram formed of current paths from the fourth terminal to the third terminal for the plurality of third-terminal side resistors and the plurality of fourth-terminal side resistors when the fourth terminal is biased higher than the third terminal, with respect to the serial chain of variable capacitance elements between the first and second terminals.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: March 27, 2018
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Tomokazu Ikenaga, Daiki Ishii, Masashi Natsume
  • Patent number: 9837211
    Abstract: A thin film capacitor comprises a base material, a dielectric layer provided on the base material, and an upper electrode layer provided on the dielectric layer. The dielectric layer includes a plurality of columnar crystals that extend along a normal direction with respect to a surface of the upper electrode layer. The columnar crystal has a perovskite crystal structure represented by AyBO3. An element A is at least one of Ba, Ca, Sr, and Pb, and an element B is at least one of Ti, Zr, Sn, and Hf. Further, y?0.995 is satisfied, and the dielectric layer contains 0.05 to 2.5 mol of Mg per 100 mol of AyBO3.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: December 5, 2017
    Assignee: TDK CORPORATION
    Inventors: Hitoshi Saita, Hiroyasu Inoue, Yoshihiko Yano
  • Patent number: 9818548
    Abstract: A thin film capacitor comprises a base material, a dielectric layer provided on the base material, and an upper electrode layer provided on the dielectric layer. The dielectric layer includes a plurality of columnar crystals that extend along a normal direction with respect to a surface of the upper electrode layer, the columnar crystal has a perovskite crystal structure represented by AyBO3, an element A is at least one of Ba, Ca, Sr, and Pb, an element B is at least one of Ti, Zr, Sn, and Hf, y?0.995 is satisfied, and the dielectric layer contains 0.05 to 2.5 mol of Al per 100 mol of AyBO3.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: November 14, 2017
    Assignee: TDK CORPORATION
    Inventors: Hitoshi Saita, Hiroyasu Inoue, Yoshihiko Yano
  • Patent number: 9704847
    Abstract: A variable capacitance device that includes a semiconductor substrate, a redistribution layer disposed on a surface of the semiconductor substrate, and a plurality of terminal electrodes including first and second input/output terminals, a ground terminal and a control voltage application terminal. Moreover, a variable capacitance element section is formed in the redistribution layer from a pair of capacitor electrodes connected to the first and second input/output terminals, respectively, and a ferroelectric thin film disposed between the capacitor electrodes. Further, an ESD protection element is connected between the one of the input/output terminals and the ground terminal is formed on the surface of the semiconductor substrate.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: July 11, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toshiyuki Nakaiso, Nobuo Sakai
  • Patent number: 9620318
    Abstract: A circuit protection device includes a substrate with first and second electrodes connected to the circuit to be protected. The circuit protection device also includes a heater element. A sensing element facilitates an electrical connection between the first and second electrodes. A flux material is provided around the sensing element. In a preferred embodiment, the flux contains a first component that is a polar material and a second component that is a non-polar material. A spring element exerts a force on the sensing element. The sensing element resists the force applied by the spring element. Upon detection of an activation, or fault, condition, the sensing element loses resilience and no longer resists the force exerted by the spring element, resulting in the spring element severing the electrical connection between the first and second electrodes. The flux allows the spring element to sever the electrical connection without dragging the sensing element.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: April 11, 2017
    Assignee: Littlefuse, Inc.
    Inventors: Martyn A. Matthiesen, Jianhua Chen, Matthew P. Galla, Anthony Vranicar, Wayne Montoya, Christopher Pasma
  • Patent number: 9590677
    Abstract: A variable capacitance device includes: a first and second terminal for signals; a plural, even number of variable capacitance elements connected in-series between the first and second terminal; a third and fourth terminal for receiving a same voltage; a fifth and sixth terminal for grounding; a plurality of first resistors connected to either the third or fourth terminal on one end; and a plurality of second resistors connected to either the fifth or sixth terminal on one end. With respect to a series of successive nodes beginning with the first terminal and ending with the second terminal, respective other ends of a pair of the first resistors are connected to every other node, and respective other ends of a pair of the second resistors are connected to the remaining every other node, such that the pairs of first and second resistors are alternately connected to the series of successive nodes.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 7, 2017
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Tomokazu Ikenaga, Daiki Ishii, Kentaro Morito
  • Patent number: 9583265
    Abstract: A multilayer ceramic electronic component includes a ceramic body including internal electrodes and dielectric layers, and an electrode layer disposed on at least one surface of the ceramic body and electrically connected to the internal electrodes. A conductive resin layer containing metal particles and a base resin is disposed on the electrode layer. When a weight ratio of metal to carbon in a surface portion of the conductive resin layer is defined as A, and a weight ratio of metal to carbon in an internal portion of the conductive resin layer is defined as B, A is greater than B.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 28, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Byoung Jin Chun, Je Ik Moon, Jae Hwan Han, Seung Hee Yoo
  • Patent number: 9478357
    Abstract: A multilayer ceramic electronic component that has a multilayer portion having an outer layer portion adjacent region including an area in contact with an outer layer portion that forms a thermal-shock absorbing portion that includes curved ceramic layers and inner electrode layers smoothly varying in thickness from point to point. A region to an inside of the thermal-shock absorbing portion forms a normal multilayer portion that includes ceramic layers with less curvature than the ceramic layers in the thermal-shock absorbing portion and inner electrode layers with less variation in thickness from point to point in a direction along a principal surface of the outer layer portion than the inner electrode layers in the thermal-shock absorbing portion.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: October 25, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Wada, Yosuke Hirata, Takashi Hiramatsu, Yoshito Saito, Hideaki Tsuji, Hiroyuki Ukai
  • Patent number: 9378892
    Abstract: A ceramic multilayer capacitor includes a first capacitor unit, which comprises a first material, and a second capacitor units, which comprises a second material. The first and the second capacitor unit are electrically connected in parallel. At low applied voltages, the first material has a high dielectric value and, at high applied voltages the second material has a high dielectric value.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: June 28, 2016
    Assignee: EPCOS AG
    Inventors: Guenter Engel, Christian Hoffmann, Andrea Testino
  • Patent number: 9368281
    Abstract: In a laminated ceramic capacitor, a cylindrical ceramic part of its ceramics includes, in a manner not exposed to the surface of the ceramics, a cylinder-shaped high-void-ratio part which has a void ratio higher than the void ratio in the cylindrical ceramic part other than the high-void-ratio part and which has two layered parts facing the left and right sides of each layered conductor, respectively, as well as two layered parts facing the outer surfaces of the two outermost layered conductors, respectively. The laminated ceramic electronic component inhibits cracking of its sintered chip.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: June 14, 2016
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Koichiro Morita, Atsushi Imai
  • Patent number: 9349539
    Abstract: A ceramic electronic component includes external electrodes having a multi-layer structure including an intermediate conductive resin layer, wherein the intermediate conductive resin layer in the external electrode is made of epoxy resin containing conductive filler, and the intermediate conductive resin layer meets both the condition B/A?0.47 and condition C/A?0.39 (A, B and C represent the maximum spectral intensities obtained based on the relationship line of the wave number and spectral intensity of the intermediate conductive resin layer as obtained by the ATR method). The ceramic electronic component minimizes separation that could occur at the interface between such intermediate conductive resin layer and a metal layer.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: May 24, 2016
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Satoshi Kobayashi, Tomoaki Nakamura, Takahisa Fukuda
  • Patent number: 9343230
    Abstract: In an electronic component, a body includes top and bottom surfaces, first and second end surfaces, and first and second lateral surfaces. A first outer electrode partially extends over the bottom surface and the first end surface without being disposed on the top surface, the second end surface, and both the lateral surfaces. A second outer electrode partially extends over the bottom surface and the second end surface without being disposed on the top surface, the first end surface, and both the lateral surfaces. An area of a first end surface portion of the first outer electrode disposed on the first end surface and area of a second end surface portion of the second outer electrode disposed on the second end surface are in a range of about 6.6% to about 35.0% of area of the first and second end surfaces, respectively.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: May 17, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Syunsuke Takeuchi, Yutaka Ota
  • Patent number: 9299498
    Abstract: A multi-layer ceramic capacitor (MLCC) device includes a ceramic chip having electrically conductive layers embedded within the chip that form one or more capacitors connected by one or more vias to one or more upwardly facing wire-bondable pads on the top side of the device. One embodiment includes electrically conductive layers that form at least two stacked capacitors connected by vias to multiple upwardly facing wire-bondable pads on the top side, whereby the MLCC device has a reduced footprint while avoiding solder fillets. The wire-bondable pads may lie in a common plane or be pyramidally stepped. Metallization on the PCB-facing bottom side and at least one of the ends of the ceramic chip of another embodiment forms a downwardly facing capacitor terminal.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: March 29, 2016
    Assignee: Eulex Corp.
    Inventors: Euan Patrick Armstrong, Ali Moalemi
  • Patent number: 9299496
    Abstract: A lead-lanthanum-zirconium-titanate (PLZT) capacitor on a substrate formed of glass. The first metallization layer is deposited on a top side of the substrate to form a first electrode. The dielectric layer of PLZT is deposited over the first metallization layer. The second metallization layer deposited over the dielectric layer to form a second electrode. The glass substrate is advantageous as glass is compatible with an annealing process used to form the capacitor.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: March 29, 2016
    Assignees: Delphi Technologies, Inc., UChicago Argonne, LLC
    Inventors: Manuel Ray Fairchild, Ralph S. Taylor, Carl W. Berlin, Celine Wk Wong, Beihai Ma, Uthamalingam Balachandran
  • Patent number: 9269491
    Abstract: There is provided a multilayer ceramic capacitor including: a ceramic body; first and second internal electrodes disposed to face each other within a ceramic body, and having respective lead portions exposed to an upper surface of the ceramic body; first and second external electrodes formed on the upper surface of the ceramic body and connected to the lead portions, respectively; and first and second terminal frames each including a vertical portion facing end surfaces of the ceramic body and upper and lower horizontal portions facing upper and lower surfaces of the ceramic body, respectively, wherein the upper horizontal portions are connected to the first and second external electrodes, respectively, and adhesive layers are provided between the upper horizontal portions and the first and second external electrodes, respectively.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: February 23, 2016
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Soo Park, Heung Kil Park
  • Patent number: 9251959
    Abstract: A multilayer ceramic condenser includes a multilayer main body, a first outer electrode, a second outer electrode, a first side part and a second side part. The multilayer main body has a first side, a second side, a third side and a fourth side. The multilayer main body includes a plurality of inner electrodes and a dielectric layer between the inner electrodes. The dielectric layer is formed by a first ceramic dielectric powder. The first side part and the second side part are formed on the second side and the fourth side of the multilayer main body, and formed by a second ceramic dielectric powder having a smaller particle diameter than the first ceramic dielectric powder. A mean grain size of the first side part or the second side part is similar to or smaller than that of the dielectric layer of the multilayer main body.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: February 2, 2016
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Hyung Joon Kim
  • Patent number: 9230739
    Abstract: A lead-lanthanum-zirconium-titanate (PLZT) capacitor on a substrate formed of glass. The first metallization layer is deposited on a top side of the substrate to form a first electrode. The dielectric layer of PLZT is deposited over the first metallization layer. The second metallization layer deposited over the dielectric layer to form a second electrode. The glass substrate is advantageous as glass is compatible with an annealing process used to form the capacitor.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: January 5, 2016
    Assignee: UChicago Argonne, LLC
    Inventors: M. Ray Fairchild, Ralph S. Taylor, Carl W. Berlin, Celine W K Wong, Beihai Ma, Uthamalingam Balachandran
  • Patent number: 9230722
    Abstract: This disclosure provides a ferrite ceramic composition, a ceramic electronic component including the ceramic composition, and a process of producing a ceramic electronic component including the ferrite ceramic composition, of which the insulation performance can be secured even when fired simultaneously with a metal wire material containing Cu as the main component, and which can have good electric properties. The ferrite ceramic composition includes an Ni—Mn—Zn-based ferrite having a molar content of CuO of 5 mol % or less and in which, when the molar content (x) of Fe2O3 and the molar content (y) of Mn2O3 are expressed by a coordinate point (x,y), the coordinate point (x,y) is located in an area bounded by coordinate points A (25,1), B (47,1), C (47,7.5), D (45,7.5), E (45,10), F (35,10), G (35,7.5) and H (25,7.5).
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: January 5, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tomoyuki Ankyu, Atsushi Yamamoto, Yuko Nomiya, Wataru Kanami
  • Patent number: 9165702
    Abstract: A thermally-protected varistor (TPV) device that includes a voltage-sensitive body; a first conductive lead frame adjacent the voltage-sensitive body; a second conductive lead frame adjacent the voltage-sensitive body and including a raised pad; a first conducting terminal including an end portion for contacting the raised pad when the TPV device is in a first, conducting position; a fusible material releasably connecting the end portion to the raised pad of the second conductive lead frame when the TPV device is in a first, conducting position; and a biasing element biasing the end portion such that the end portion of the first conducting terminal is configured to move away from the raised pad of the second lead frame when the temperature-sensitive fusible material releases the end portion of the first conducting terminal from the raised pad in response to heat generated by the voltage-sensitive body.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: October 20, 2015
    Inventor: James P. Hagerty
  • Patent number: 9099243
    Abstract: There is provided a multilayer ceramic electronic component includes a ceramic body including a dielectric layer; and an internal electrode formed in the ceramic body, wherein on a cross-section of the ceramic body in a width-thickness direction, a thickness Te of the internal electrode satisfies 0.1 ?m?Te?1.0 ?m, and when the internal electrode is divided into three regions including a central region and both edge regions in a width direction of the ceramic body and a ratio of an actual total length of the internal electrode corresponding to the sum of lengths of electrode portions to an ideal total length of the internal electrode is defined as connectivity S of the internal electrode, connectivity of the internal electrode in the edge regions satisfies 75%?S?98%, and a ratio of connectivity of the internal electrode in the edge regions to connectivity of the internal electrode in the central region is 0.9 to 0.98.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: August 4, 2015
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Su Hwan Cho, Jong Han Kim, Seung Ho Lee, Jae Yeol Choi
  • Patent number: 9040840
    Abstract: There is provided a multilayer ceramic electronic component comprising a ceramic body having a hexahedral shape, including dielectric layers, and satisfying T/W>1.0 when a length of the ceramic body is defined as L, a width of a lower surface thereof is defined as W, and a thickness thereof is defined as T, and first and second internal electrodes stacked in the ceramic body to face each other, having the respective dielectric layers therebetween, wherein the ceramic body includes an active layer and cover layers and in a case in which the active layer is divided into three regions in a thickness direction of the ceramic body, when an average thickness of the internal electrodes in an upper region and an average thickness of the internal electrodes in a lower region, based on a central region, are defined as ta and tb, respectively, 0.751?ta/tb?0.913 is satisfied.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: May 26, 2015
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Eun Sun Chung, Dae Bok Oh, Jae Man Park, Seung Ho Lee
  • Patent number: 9042081
    Abstract: There is provided a multilayer ceramic capacitor including: a ceramic body having first and second side surfaces opposite to each other, and third and fourth end surfaces connecting the first and second side surfaces; a plurality of internal electrodes formed in the ceramic body and having one ends thereof exposed to the third or fourth end surface; and first and second side margin parts formed from the first and second side surfaces to respective edges of the internal electrodes, the first and second side margin parts having an average thickness of 18 ?m or less, wherein when a boundary surface between a cover layer and the first or second side margin part in the ceramic body is divided into two regions in a thickness direction of the ceramic body, a region adjacent to the internal electrode is S1, and a porosity of S1 is P1, 1?P1?20 is satisfied.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 26, 2015
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Hyung Joon Kim
  • Patent number: 9042079
    Abstract: A ceramic electronic component comprising; including a chip component of approximately rectangular parallelepiped, a first metal terminal portion having a first flat plate portion facing a first end face, at least a pair of first fitting arm portions connected to the first flat plate portion, having a first engagement projection engaging with a first wraparound portion holding the first wraparound portion in between, and a first mounting portion connected to the first flat plate portion and extending approximately parallel to one side face, and a second metal terminal portion having a second flat plate portion facing the second end face, at least a pair of second fitting arm portions connected to the second flat plate portion, having a second engagement projection engaging with a second wraparound portion, holding the second wraparound portion in between, and a second mounting portion extending approximately parallel to one side face.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: May 26, 2015
    Assignee: TDK CORPORATION
    Inventors: Sunao Masuda, Katsumi Kobayashi, Akitoshi Yoshii, Kazuyuki Hasebe, Takashi Komatsu, Kayou Kusano
  • Patent number: 9042080
    Abstract: There are provided a multilayer ceramic electronic component and a method of manufacturing the same. Here, an average diameter (Dc) of ceramic grains in a cover area is smaller than an average diameter (Da) of ceramic grains in the active area, and when a thickness of the cover area is expressed by Tc, 9 um?Tc?25 um and Tc/Dc?55 are satisfied. A multilayer ceramic capacitor having excellent moisture-resistance properties may be obtained.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: May 26, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyo Jung Kim, Seok Hyun Yoon, Chang Hoon Kim, Byoung Hwa Lee, Sang Hoon Kwon
  • Patent number: 9042082
    Abstract: A multilayer ceramic capacitor includes a ceramic main body including an inner layer portion including third ceramic layers and a plurality of inner electrodes arranged at interfaces between the third ceramic layers, and first and second outer layer portions respectively including first and second ceramic layers, the first and second ceramic layers being arranged vertically so as to sandwich the inner layer portion. The third ceramic layers and the first and second outer layer portions contain a perovskite-type compound represented by ABO3 where A contains one or more of Ba, Sr, and Ca, B contains one or more of Ti, Zr, and Hf, and O represents oxygen) as a main component. Where a rare-earth element concentration (CR) in the third ceramic layers is compared to a rare-earth element concentration (Cr) in outermost layer portions including at least outermost surfaces of the first and second outer layer portions, CR>Cr (inclusive of Cr=0).
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: May 26, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hiroyuki Wada, Kohei Shimada, Kenji Takagi, Tomomi Koga, Tomotaka Hirata, Hitoshi Nishimura, Hiroki Awata, Sui Uno
  • Patent number: 9030801
    Abstract: There is provided a multilayer ceramic capacitor including a ceramic body having first and second side surfaces facing each other, and third and fourth end surfaces connecting the first and second side surfaces, a plurality of internal electrodes formed in the ceramic body and having one ends thereof exposed to the third end surface or the fourth end surface, and a first side margin part and a second side margin part formed such that an average thickness thereof from the first and second side surfaces to edges of the internal electrodes is 18 ?m or less.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 12, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Hyung Joon Kim
  • Patent number: 9030802
    Abstract: A multilayer ceramic electronic component includes a ceramic body including dielectric layers stacked in a thickness direction and satisfying T/W>1.0 when a width thereof is W and a thickness thereof is T; first and second internal electrodes; and first and second external electrodes, wherein when the ceramic body is divided into five regions in a width direction and a central region among the five regions is CW1 and regions adjacent to the central region CW1 are CW2 and CW3, a difference between electrode connectivity of the central region CW1 and electrode connectivity of the region CW2 or CW3 satisfies 0.02?(CW2 or CW3)?CW1?0.10.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 12, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Min Gon Lee, Dae Bok Oh, Jong Han Kim, Seung Ho Lee
  • Patent number: 9025310
    Abstract: There is provided a multilayer ceramic capacitor including a ceramic body having first and second side surfaces and third and fourth end surfaces, a plurality of internal electrodes and having one ends exposed to the third or fourth end surface, and first and second side margin parts formed so that an average thickness from the first and second side surfaces to edges of the internal electrodes is 18 ?m or less, wherein when the first or second side margin part is divided into two regions by a virtual line obtained by connecting mid points of distances between the edges of the internal electrodes and points at which lines extended from the internal electrodes contact the first or second side surface, when a region adjacent to the internal electrodes is defined as S1 and a porosity of S1 is defined as P1, P1 is in a range of 1 to 20 (1?P1?20).
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 5, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Hyung Joon Kim
  • Patent number: 9025307
    Abstract: There is provided a multilayer ceramic electronic component, including: a ceramic body including dielectric layers; and first and second inner electrodes disposed to face each other with the dielectric layer interposed therebetween within the ceramic body, the first and second inner electrodes being alternately laminated with a difference in printing widths therebetween, wherein a difference ratio between the printing widths of the first and second inner electrodes is 20 to 80%. According to embodiments of the present invention, a multilayer ceramic electronic component having excellent reliability and withstand voltage characteristics may be realized, by reducing the occurrence of cracking through a reduction in the influence of step height while securing high capacitance.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: May 5, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Hyung Lim, Seok Kyoon Woo, Chung Eun Lee, Doo Young Kim
  • Patent number: 9013859
    Abstract: A method for manufacturing a laminated electronic component in which, when first plating layers that respectively connect a plurality of internal electrodes to each other and second plating layers that improves the mountability of a laminated electronic component are formed as external terminal electrodes, the entire component main body is treated with a water repellent agent after the formation of the first plating layers, and the water repellent agent on the first plating layers is then removed before the formation of the second plating layers. The gaps between the end edges of the first plating films on the outer surface of the component main body and the outer surface of the component main body are filled with the water repellent agent.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: April 21, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masahito Saruban, Makoto Ogawa, Akihiro Motoki, Syunsuke Takeuchi, Kiyoyasu Sakurada
  • Patent number: 9001493
    Abstract: There is provided a multilayered ceramic electronic component including: a ceramic body in which a plurality of dielectric layers are stacked; a plurality of first and second internal electrodes formed on at least one of the dielectric layers and alternately exposed through both ends of the ceramic body in a stacking direction of the ceramic body; an a step compensation cover including a ceramic material having a viscosity higher than that of a ceramic material included in the ceramic body and formed on at least one of an upper surface and a lower surface of the ceramic body.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: April 7, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sung Woo Kim, Jae Yeol Choi, Yu Na Kim, Jong Ho Lee
  • Patent number: 8995110
    Abstract: A laminated ceramic capacitor includes multiple dielectric layers, internal electrodes having Cu as the primary component and embedded between the dielectric layers, and external electrodes. The dielectric layers contain a primary component comprised of a CaZrO3 compound and auxiliary components that include Mn, B, Si, and Li wherein a primary phase comprised of the primary component, segregation phases containing Ca and at least one of the auxiliary components, and secondary phases containing at last Ca and Zr are formed. The ratio of Ca to Zr in the secondary phases is smaller than the ratio of Ca to Zr in the primary phase, and the number of secondary phases with a diameter of 100 nm or greater in a cross section of the dielectric layers averages 30 or less per 10 square ?m.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: March 31, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventor: Shinsuke Takeoka
  • Patent number: 8982534
    Abstract: There is provided a multilayer ceramic electronic component including: a ceramic main body including a dielectric layer and internal electrodes disposed to face each other, while having the dielectric layer interposed therebetween; and external electrodes electrically connected to the internal electrodes, wherein the external electrodes include first external electrodes formed on outer surfaces of the ceramic main body and second external electrodes formed outwardly of the first external electrodes, and protective layers including one or more of an oxide layer and a glass layer are formed between the first external electrodes and the second external electrodes.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: March 17, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joon Hwan Kwag, Sang Huk Kim
  • Patent number: 8971017
    Abstract: A multilayer ceramic capacitor includes a ceramic multilayer body including dielectric layers and inner electrodes stacked on top of one another with the dielectric layers interposed between a corresponding pair of the inner electrodes. The dielectric layers each include a perovskite-type compound including Ba and Ti. A boundary layer including Mg and Mn is located at an interface between an outermost inner electrode and an outermost dielectric layer. The outermost inner electrode is located at an outermost position of the inner electrodes in a direction in which the inner electrodes are stacked. The outermost dielectric layer is located outside the outermost inner electrode. A proportion in which the boundary layer is present at the interface is about 69% or more. A continuity of the outermost inner electrode is about 60% or more.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 3, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Tomoyuki Nakamura
  • Patent number: 8971016
    Abstract: A monolithic ceramic capacitor includes an outer electrode arranged on a ceramic element body including inner electrodes, and a dielectric layer present between a pair of the inner electrodes adjacent in a stacking direction and extending to one of a pair of end surfaces of the ceramic element body that defines an inter-electrode dielectric layer. A gap extending in a direction connecting the inner electrodes sandwiching the inter-electrode dielectric layer is present in about 5% to about 90% of inter-electrode dielectric layers in the ceramic element body at a position near or adjacent to at least one of the pair of end surfaces of the ceramic element body.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: March 3, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Toshiki Nagamoto
  • Patent number: 8964356
    Abstract: A dielectric ceramic which is suitable for use in a laminated ceramic capacitor under a high-temperature environment, such as encountered in, for example, automobile use has a composition represented by the composition formula: (1?x) (Ba1-yCay)mTiO3+xCaTiO3+aRe2O3+bMgO+cMnO+dV2O3+eSiO2 in which Re is Gd, Dy, Y, Ho, and/or Er), 0.001?x?0.02, 0.08?y?0.20, 0.99?m?1.05, 0.01?a?0.04, 0.005?b?0.035, 0?c?0.01, 0?d?0.01, 0.01?e?0.04 when a, b, c, d, and e are each expressed in terms of parts by mol with respect to 1 mol of (1?x) (Ba,Ca)TiO3+xCaTiO3. This dielectric ceramic can constitute the dielectric ceramic layers of a laminated ceramic capacitor.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: February 24, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shoichiro Suzuki, Toshikazu Takeda, Jun Ikeda, Megumi Morita
  • Patent number: 8941972
    Abstract: There are provided a multilayer ceramic electronic component and a method of manufacturing the same. The multilayer ceramic electronic component includes: a ceramic body including a dielectric layer; first and second internal electrodes disposed within the ceramic body to face each other, while having the dielectric layer interposed therebetween; and first external electrodes electrically connected to first and second internal electrodes and second external electrodes formed on the first external electrodes, wherein the first and second external electrodes include a conductive metal and a glass, and when the second external electrodes are divided into three equal parts in a thickness direction, an area of the glass in central parts thereof with respect to an area of the central parts is 30 to 80%. Therefore, sealing properties of a chip is improved, whereby a multilayer ceramic electronic component having improved reliability may be implemented.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: January 27, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Myung Jun Park, Sang Hoon Kwon, Chang Hoon Kim, Hyun Hee Gu, Jae Young Park, Da Young Choi, Kyu Ha Lee, Byung Jun Jeon
  • Patent number: 8941975
    Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and Al/Si alloy-containing internal electrodes at a plurality of specific interface between ceramic layers; and an external electrode formed on the outer surface of the laminate, wherein the Al/Si ratio of the Al/Si alloy is 85/15 or more.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: January 27, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Koichi Banno, Shoichiro Suzuki, Masanori Nakamura, Masahiro Otsuka, Taisuke Kanzaki, Akihiro Shiota
  • Patent number: 8917491
    Abstract: One object is to provide a porous capacitor having increased insulation reliability. In accordance with one aspect, the porous capacitor includes: a first conductor layer and a second conductor layer opposed to each other at a predetermined distance; a dielectric layer made of an oxidized valve metal and disposed between the first conductor layer and the second conductor layer; a large number of holes formed through the dielectric layer and oriented substantially orthogonal to the first conductor layer and the second conductor layer; and first electrodes and second electrodes formed of a conductive material filled in the holes; and insulation parts insulating the first electrodes from the second conductor layer and insulating the second electrodes from the first conductor layer. The thicknesses of the first conductor layer and the second conductor layer are equal to or greater than half of the inner diameter of the holes.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: December 23, 2014
    Assignee: Taiyo Yuden Co., Ltd
    Inventors: Hidetoshi Masuda, Kenichi Ota
  • Patent number: 8908352
    Abstract: There is provided a chip type laminated capacitor including: a ceramic body formed by laminating a dielectric layer having a thickness equal to 10 or more times an average particle diameter of a grain included therein and being 3 ?m or less; first and second outer electrodes; a first inner electrode having one end forming a first margin together with one end surface of the ceramic body at which the second outer electrode is formed and the other end leading to the first outer electrode; and a second inner electrode having one end forming a second margin together with the other end surface of the ceramic body at which the first outer electrode is formed and the other end leading to the second outer electrode, wherein the first and second margins have different widths under a condition that they are 200 ?m or less.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 9, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd
    Inventors: Young Ghyu Ahn, Byoung Hwa Lee, Min Cheol Park, Young Hoon Song, Mi Hee Lee
  • Patent number: 8908351
    Abstract: There are provided a conductive paste composition for an internal electrode, a multilayer ceramic electronic component including the same, and a method of manufacturing the same, the conductive paste composition including: a metal powder; and an additive including at least one selected from glutamic acid, amino acids, thiols, and hydrocarbons.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: December 9, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ro Woon Lee, Young Ho Kim, Yoon Hee Lee, Kyung Jin Choi
  • Patent number: 8902564
    Abstract: In a multilayer ceramic electronic component, when a region of a ceramic body in layers where neither of a first internal electrode and a second internal electrode is provided as viewed in a direction in which a plurality of ceramic layers are stacked on one another is defined as a non-effective layer region, a dummy lead-through conductor is arranged in the non-effective layer region so as to lead to at least two locations on portions of superficies of the ceramic body and be electrically connected to a second external electrode. When a conductive medium is brought into contact with one of a plurality of exposed edges of the dummy lead-through conductor, a current is also applied to the other exposed edges.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: December 2, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Teppei Akazawa, Kenjiro Hadano, Masahiro Sakuratani
  • Patent number: 8891226
    Abstract: There is provided a multilayer ceramic electronic component, including: a ceramic sintered body having a plurality of dielectric layers laminated therein; first and second capacitance portions being formed on surfaces of the dielectric layers; first and second lead-out portions being respectively extended from both sides of the first and second capacitance portions to be respectively exposed through both side surfaces of the ceramic sintered body and spaced apart from each other; sealing parts enclosing both end portions and corner portions of the ceramic sintered body; and first and second external electrodes enclosing the sealing parts and formed on both end portions of the ceramic sintered body to be electrically connected to the first and second lead-out portions, respectively.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: November 18, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chung Eun Lee, Jae Yeol Choi, Doo Young Kim, Wi Heon Kim
  • Patent number: 8885321
    Abstract: Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes a laminate which has a plurality of laminated ceramic layers and internal electrodes formed along at a plurality of specific interface between the ceramic layers and having an Al/Ti alloy as a component; and an external electrode formed on the outer surface of the laminate. The Al/Ti ratio of the Al/Ti alloy is 91/9 or more.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: November 11, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Taisuke Kanzaki, Koichi Banno, Masahiro Otsuka, Shoichiro Suzuki, Akihiro Shiota, Masanori Nakamura
  • Patent number: 8885322
    Abstract: A capacitor includes a pair of electrodes and a metalized dielectric layer disposed between the pair of electrodes, in which the metalized dielectric layer has a plurality of metal aggregates distributed within a dielectric material. The distribution is such that a volume fraction of metal in the metalized dielectric layer is at least about 30%. Meanwhile, the plurality of metal aggregates are separated from one another by the dielectric material. A method for forming a metal-dielectric composite may include coating a plurality of dielectric particles with a metal to form a plurality of metal-coated dielectric particles and sintering the plurality of metal-coated dielectric particles at a temperature of at least about 750° C. to about 950° C. to transform the metal coatings into discrete, separated metal aggregates.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: November 11, 2014
    Assignee: Apricot Materials Technologies, LLC
    Inventor: Liang Chai
  • Patent number: 8885323
    Abstract: There is provided a multilayered ceramic electronic component including: a multilayered body in which a plurality of dielectric layers are stacked; a plurality of first and second internal electrodes formed on the dielectric layers so as to be alternately exposed through end surfaces; a minimum margin indicating part formed on an L-direction margin part on which the first or second internal electrode is not formed on the dielectric layer and indicating a minimum size of the L-direction margin part, the L-direction minimum margin indicating part being inserted on the ceramic sheet, whereby a multilayered ceramic electronic component having high capacitance while reducing a defect and having excellent reliability may be implemented.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: November 11, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Seok Joon Hwang, Je Jung Kim