Taiyo Yuden Co., Ltd.

Taiyo Yudenco., Ltd.

Masaki Mochigi

Daigo Ito

Toshimasa Suzuki

Yousuke Nakada

Chie Kawamura

Yasuyuki Inomata

Shinichi Tsunoda

Yasuyuki Mashimo

Masataka Tomita

Kazuya Sato

Tetsuo Shimura

Keiko Shiroki

Akitoshi Wagawa

A multilayer ceramic electronic device includes a multilayer chip having a plurality of dielectric layers and a plurality of internal electrode layers, one end of each of the plurality of internal electrode layers being exposed from the multilayer chip, an external electrode that is provided on an end face of the multilayer chip and is electrically connected to the one end of at least some of the plurality of internal electrode layers and includes a glass component, the end face being an end of the multilayer chip in a direction in which the plurality of internal electrode layers extend. The external electrode includes a crystal contacting or extending into the glass component at an interface between the external electrode and the end face of the multilayer chip. The crystal includes an element that is the same as at least one of elements included in the plurality of dielectric layers.

Multilayer ceramic electronic device, circuit substrate and manufacturing method of multilayer ceramic electronic device

A ceramic electronic component includes a ceramic body, a sintered metal film, and a metal terminal. The ceramic body includes internal electrodes. The sintered metal film has a joint surface having a surface roughness Ra of 0.200 &#x3bc;m or less. The sintered metal film is connected to the internal electrodes and formed on a surface of the ceramic body. The metal terminal is jointed to the joint surface.

Ceramic electronic component, method of producing the same, and electronic component mounting substrate

A multilayer ceramic capacitor includes a multilayer structure wherein [t&#xd7;L]/N&#x2265;10, when a distance between a first edge that is an outermost edge of internal electrodes that is not connected to a first or second external electrode and a second edge that is an innermost edge of the internal electrodes that is not connected to the first or second external electrode is L, each thickness of dielectric layers is t, and a stack number of dielectric layers is N, wherein [t&#xd7;W]/N&#x2265;10, when a distance between a first edge that is positioned at outermost of the internal electrodes and a second edge that is positioned at innermost of the internal electrodes is W, and wherein R is larger than W, when a curvature radius of a corner of an edge of the internal electrodes is R.

Multilayer ceramic capacitor

A multilayer ceramic capacitor includes: a multilayer structure in which internal electrodes and dielectric layers are alternately stacked; a first external electrode connected to a subset of the internal electrodes; and a second external electrode sandwiching the multilayer structure with the first external electrode in a first direction is connected to another subset of the internal electrodes, wherein t&#xd7;W/N is equal to or more than 0.1, when a distance between a first edge positioned at outermost of the internal electrodes in a second direction intersecting with the first direction in a plane direction of the internal electrodes and the dielectric layers and a second edge positioned at innermost of the internal electrodes in the second direction is W(mm), each thickness of the plurality of dielectric layers is t(&#x3bc;m), and a stack number of the plurality of dielectric layers is N.

Multilayer ceramic capacitor with internal electrodes having different edge positions

A multilayer ceramic capacitor includes: a multilayer structure having an internal electrode and a dielectric layer alternately stacked; external electrodes provided on a first and second faces of the multilayer structure, wherein t&#xd7;L/N is equal to or more than 0.1, when a distance between a first edge positioned at outermost of edges of the plurality of internal electrodes that are not connected to the first external electrode or the second external electrode in an array direction of the first external electrode and the second external electrode and a second edge positioned at innermost of edges of the plurality of internal electrodes that are not connected to the first external electrode or the second external electrode in the array direction is L(mm), each thickness of the plurality of dielectric layers is t(&#x3bc;m), and a stack number of the plurality of dielectric layers is N.

An all-solid-state secondary battery, including: a solid electrolyte layer; a positive electrode layer including a positive electrode active material layer and a first current collector layer; a negative electrode layer including a second current collector layer, the positive electrode layer and the negative electrode layer sandwiching the solid electrolyte layer; and external electrodes connected respectively to the first current collector layer and the second current collector layer, wherein the positive electrode active material layer is formed of an olivine-type active material, wherein the solid electrolyte layer is formed of a phosphate having a NASICON-type structure, and wherein the solid electrolyte layer contains particulate precipitate having an olivine-type crystal structure that includes a same element as an element forming the positive electrode active material layer.

All-solid-state secondary battery and method for manufacturing same

All-solid-state secondary battery with solid electrolyte layer containing particulate precipitate of an olivine-type crystal structure

A lithium-titanium complex oxide containing LiTiOis characterized in that, based on SEM observation, the number-based percentage of particles whose size is less than 0.1 &#x3bc;m is 5 to 15% or 40 to 65%, the number-based percentage of particles whose size is 0.3 to 1.5 &#x3bc;m is 15 to 30%, the specific surface area measured by the BET method is 5.8 to 10.1 m/g, and the average particle size D50 according to the particle size distribution measured by laser diffraction measurement is preferably 0.6 to 1.5 &#x3bc;m.

Lithium-titanium complex oxide, and battery electrode and lithium ion secondary battery using same

A lithium-titanium complex oxide whose total water generation amount and total carbon dioxide generation amount measured by thermal decomposition GC-MS are preferably 1500 wt ppm or less and 2000 wt ppm or less, respectively, is obtained by subjecting a mixture of titanium compound and lithium compound to a heat treatment at 600&#xb0; C. or above, cooling the obtained reaction product to 50&#xb0; C. or below, and then subjecting the cooled reaction product to a reheat treatment involving heating to the maximum temperature of 300 to 700&#xb0; C. and then cooling, wherein the dew point of the ambience of the reheat treatment is controlled at &#x2212;30&#xb0; C. or below at a temperature of 200&#xb0; C. or above.

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Takasaki, Japan

Masaki Mochigi