Ceramic capacitor, method for producing the same, and dielectric multilayer device

A method for producing a ceramic capacitor, comprising the steps of:

• forming a first conductive pattern serving as one electrode of the capacitor on a first green sheet;
• forming a second conductive pattern serving as the other electrode of the capacitor on a second green sheet;
• and
• laminating the first green sheet and the second green sheet, followed by sintering of the same,
• wherein in projection in a direction of the lamination, a main part of the second conductive pattern is formed smaller than the first conductive pattern so that an outer edge of the main part of the second conductive pattern does not extend beyond an outer edge of the first conductive pattern, and
• a first extended portion and a second extended portion are formed at both opposed edges of the second conductive pattern, the first extended portion and the second extended portion extending in mutually opposite directions and, in the projection in the lamination direction, each of the first extended portion and the second extended portion extending outwardly beyond the outer edge of the first conductive pattern.

A method for producing a ceramic capacitor, comprising the steps of:

• forming a first conductive pattern serving as one electrode of the capacitor on a first green sheet;
• forming a second conductive pattern serving as the other electrode of the capacitor on a second green sheet;
• and
• laminating the first green sheet and the second green sheet, followed by sintering of the same,
• wherein an aperture is formed in the first conductive pattern so as to penetrate in a same direction as a direction of the lamination, and
• in projection in the lamination direction, the second conductive pattern is formed with a strip-shaped pattern whose central portion lies across the aperture and both end portions overlap the first conductive pattern.

A dielectric multilayer device, comprising:

• a plurality of dielectric layers and a plurality of conductive patterns, which are laminated alternately in a vertical direction having an interval therebetween;
• and a capacitor that is built in the dielectric multilayer device,
• wherein the capacitor comprises:
• a first dielectric layer;
• and a first conductive pattern and a second conductive pattern made of a conductor provided so as to oppose each other and sandwich the first dielectric layer therebetween in a direction of a thickness of the first dielectric layer,
• in projection in the thickness direction, the second conductive pattern is made smaller than the first conductive pattern so that an outer edge of the second conductive pattern does not extend beyond an outer edge of the first conductive pattern,
• a first extended portion and a second extended portion made of the conductor are provided at both opposed edges of the second conductive pattern so as to extend in mutually opposite directions, and
• in the projection in the thickness direction, each of the first extended portion and the second extended portion extends outwardly beyond the outer edge of the first conductive pattern.

A dielectric multilayer device, comprising:

• a plurality of dielectric layers and a plurality of conductive patterns, which are laminated alternately in a vertical direction having an interval therebetween;
• and a capacitor that is built in the dielectric multilayer device,
• wherein the capacitor comprises:
• a first dielectric layer;
• and a first conductive pattern and a second conductive pattern made of a conductor provided so as to oppose each other and sandwich the first dielectric layer therebetween in a direction of a thickness of the first dielectric layer,
• an aperture is formed in the first conductive pattern so as to penetrate in a same direction as the direction of the thickness of the first dielectric layer, and
• in projection in the thickness direction, the second conductive pattern is formed with a strip-shaped pattern whose central portion lies across the aperture and both end portions overlap the first conductive pattern.