-
11.发明申请公开(公告)号：US20200090867A1
公开(公告)日：2020-03-19
申请号：US16691257
申请日：2019-11-21
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Katsuya TANIGUCHI
Abstract: A measuring method for measuring a concentration of a donor element which is solid-solved in ceramic grains of a plurality of ceramic dielectric layers, includes measuring (a current value at 10 V/μm when a direct voltage is applied to a plurality of ceramic dielectric layers at 125 degrees C.)/(a current value at 10 V/μm when a direct voltage is applied to the plurality of the ceramic dielectric layers at 85 degrees C.), with respect to a multilayer ceramic capacitor having a multilayer structure in which each of the plurality of ceramic dielectric layers and each of a plurality of internal electrode layers are alternately stacked.
-
公开(公告)号：US20170365412A1
公开(公告)日：2017-12-21
申请号：US15457337
申请日：2017-03-13
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Katsuya TANIGUCHI , Koichiro MORITA , Minoru RYU , Yoshiki IWAZAKI
CPC classification number: H01G4/30 , H01G4/0085 , H01G4/012 , H01G4/1218 , H01G4/1227 , H01G4/248
Abstract: A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode containing a base metal and coupled to one of the external electrodes; a dielectric layer stacked on the first internal electrode and containing a ceramic material and the base metal; and a second internal electrode stacked on the dielectric layer, containing the base metal, and coupled to another one of the external electrodes, wherein a concentration of the base metal in each of five regions, which are equally divided regions of a region between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, is within ±20% of an average of the concentrations of the base metal in the five regions, and an average grain size in the dielectric layer is 200 nm or less.
-
公开(公告)号：US20170365411A1
公开(公告)日：2017-12-21
申请号：US15457171
申请日：2017-03-13
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Katsuya TANIGUCHI , Koichiro MORITA , Minoru RYU , Yoshiki IWAZAKI
CPC classification number: H01G4/30 , H01G4/0085 , H01G4/012 , H01G4/1218 , H01G4/1227
Abstract: A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode containing a base metal and coupled to one of the external electrodes; a dielectric layer stacked on the first internal electrode and containing a ceramic material and the base metal; and a second internal electrode stacked on the dielectric layer, containing the base metal, and coupled to another one of the external electrodes, wherein a concentration of the base metal in each of five regions, which are equally divided regions of a region between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, is within ±20% of an average of the concentrations of the base metal in the five regions, and the dielectric layer has a thickness of 0.6 μm or less.
-
公开(公告)号：US20170365410A1
公开(公告)日：2017-12-21
申请号：US15457060
申请日：2017-03-13
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Koichiro MORITA , Katsuya TANIGUCHI , Minoru RYU , Yoshiki IWAZAKI
CPC classification number: H01G4/30 , H01G4/0085 , H01G4/012 , H01G4/1227 , H01G4/2325
Abstract: A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode containing a base metal and coupled to one of the external electrodes; a dielectric layer stacked on the first internal electrode and containing a ceramic material and the base metal; and a second internal electrode stacked on the dielectric layer, containing the base metal, and coupled to another one of the pair external electrodes, a concentration of the base metal in each of five regions, which are equally divided regions of a region between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, being within ±20% of an average of the concentrations of the base metal in the five regions, an average grain number in the dielectric layer being three or less in the stacking direction between the first and second internal electrodes.
-
公开(公告)号：US20170365405A1
公开(公告)日：2017-12-21
申请号：US15456339
申请日：2017-03-10
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoshiki IWAZAKI , Katsuya TANIGUCHI , Minoru RYU , Koichiro MORITA
CPC classification number: H01G4/30 , H01G4/012 , H01G4/1227 , H01G4/2325
Abstract: A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode that is coupled to one of the pair of external electrodes; a dielectric layer that is stacked on the first internal electrode and contains BaTiO3 and Ni; and a second internal electrode that is stacked on the dielectric layer, contains Ni, and is coupled to another one of the pair of external electrodes, wherein Ni is contained in five regions, which are equally divided region of a region between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, and a Ni concentration in at least one of end regions located closest to the first internal electrode and the second internal electrode among the five regions is greater than a Ni concentration in a central region of the five regions by 10% or more.
-
Patent Agency Ranking
公开(公告)号：US20220415575A1
公开(公告)日：2022-12-29
申请号：US17896698
申请日：2022-08-26
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Katsuya TANIGUCHI
Abstract: A selection method includes: obtaining or providing multilayer ceramic capacitors each having a multilayer structure in which each of a plurality of ceramic dielectric layers and each of a plurality of internal electrode layers are alternately stacked; measuring a ratio of (a current value at 10 V/μm when a direct voltage is applied to a plurality of ceramic dielectric layers at 125 degrees C.)/(a current value at 10 V/μm when a direct voltage is applied to the plurality of the ceramic dielectric layers at 85 degrees C.), with respect to each multilayer ceramic capacitor; determining whether the ratio is in a predetermined range; and selecting a multilayer ceramic capacitor or multilayer ceramic capacitors each having a ratio in the predetermined range as a desired multilayer ceramic capacitor.
-
公开(公告)号：US20220135485A1
公开(公告)日：2022-05-05
申请号：US17578249
申请日：2022-01-18
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Katsuya TANIGUCHI , Tsuyoshi SOGABE
IPC: C04B35/468 , H01G4/12 , H01G4/012 , H01G4/30
Abstract: Ceramic raw material powder includes: a main phase having a perovskite structure, wherein elements acting as a donor and an acceptor are solid-solved in B sites of the perovskite structure, wherein a first relationship of value A value B is satisfied in a circumference region of each grain of the ceramic raw material powder, and value A in the second relationship gradually decreases from the circumference region to the center, wherein value A is a value of (concentration of the element acting as a donor)×(valence of the element acting as a donor−4), and value B is a value of (concentration of the element acting as an acceptor)×(4−valence of the element acting as an acceptor).
-
公开(公告)号：US20210147298A1
公开(公告)日：2021-05-20
申请号：US17039861
申请日：2020-09-30
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Katsuya TANIGUCHI
IPC: C04B35/468 , H01G4/30 , H01G4/12 , C04B35/63
Abstract: A ceramic raw material powder includes: ceramic particles having a perovskite structure containing barium, a mean particle diameter of the ceramic particles being 80 nm or greater and 150 nm or less; and chlorine, wherein a concentration of the chlorine to a B site element of the ceramic particles is 0.2 atm % or greater and 1.1 atm % or less.
-
公开(公告)号：US20190279816A1
公开(公告)日：2019-09-12
申请号：US16286356
申请日：2019-02-26
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Katsuya TANIGUCHI , Tsuyoshi SOGABE
Abstract: A multilayer ceramic capacitor includes: a multilayer structure in which each of a plurality of dielectric layers and each of internal electrode layers are alternately stacked; wherein a main component of the dielectric layers is a ceramic material, wherein a main phase of the ceramic material has a perovskite structure expressed by a general formula ABO3, wherein a B site of the ceramic material includes an element acting as a donor; wherein an A site and the B site of the ceramic material includes a rare earth element, wherein (an amount of the rare earth element substitutionally solid-solved in the A site)/(an amount of the rare earth element substitutionally solid-solved in the B site) is 0.75 or more and 1.25 or less.
-
公开(公告)号：US20170365408A1
公开(公告)日：2017-12-21
申请号：US15456991
申请日：2017-03-13
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Koichiro MORITA , Katsuya TANIGUCHI , Minoru RYU , Yoshiki IWAZAKI
CPC classification number: H01G4/30 , H01G4/012 , H01G4/1227 , H01G4/232 , H01G4/2325
Abstract: A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode containing a base metal and coupled to one of the pair external electrodes; a dielectric layer stacked on the first internal electrode and containing a ceramic material and the base metal; and a second internal electrode stacked on the dielectric layer, containing the base metal, and coupled to another one of the external electrodes, wherein a concentration of the base metal in each of five regions, which are equally divided regions of a region between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, is within ±20% of an average of the concentrations of the base metal in the five regions, and thicknesses of the first internal electrode and the second internal electrode are 0.2 μm or greater.
-
-
-
-
-
-
-
-
-
Search Results
21
records
(took 0.019 seconds)
