Patent ID: 9406441
Filing Date: 2016-08-02
CPC Classification: H01G

Claim Text:
1. A multi-layer ceramic capacitor constituted by ceramic dielectric layers alternately laminated with conductive layers, wherein: each of the ceramic dielectric layers is constituted by sintered grains comprised of core-shell grains each having a core-shell structure wherein a core of primary component is enclosed by a shell of auxiliary solid-solution component, and uniform solid-solution grains each constituted by solid solution without a core; an area ratio of the core-shell grains to all the sintered grains constituting each ceramic dielectric layer is 5 to 15% as measured in an observed area of cross section by a transmission electron microscope (TEM) of a randomly selected portion of the ceramic dielectric layer with interposing conductive layers; and a grain size representing an average grain size of all the sintered grains including the core-shell grains and uniform solid-solution grains is 0.3 to 0.5 μm.