Capacitor and method for manufacturing the same
AssigneeRubycon Corporation
InventorsNorimasa Morimitsu, Tomonao Kako
Life of this patent
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Abstract
There is provided a capacitor (1) including a main body (10), in which a plurality of dielectric layers (13) and a plurality of electrode layers (11) are alternatively laminated, and an external electrode (20) that is connected to at least part of the main body. Before forming an external electrode by metal spraying (metallikon) on the main body, at least part of a connection surface (30) where the metal spraying is performed is scanned with a laser beam (51) so that scanning marks (55) composed of concave-convex structures (35) are formed by the laser beam on at least part of the connection surface.
Claims8
A method of manufacturing a capacitor including a main body in which a plurality of dielectric layers and a plurality of electrode layers are alternately laminated, and an external electrode that is connected to at least part of the main body,
- the method comprising, scanning with a laser beam, before the external electrode is formed by metal spraying on the main body, at least part of a connection surface of the main body, which is to be subjected to the metal spraying and at which ends of the plurality of dielectric layers and ends of the plurality of electrode layers are exposed,
- wherein the scanning includes forming, by the laser beam, in at least part of the connection surface, concave-convex structures of the ends of the plurality of dielectric layers, which are made of a thermosetting resin, and a region that includes the ends of the plurality of electrode layers recessed with respect to the ends of the plurality of dielectric layers,
- wherein the method of manufacturing further comprises forming the external electrode, by the metal spraying, on the connection surfaces that have been scanned by the laser beam, the external electrode being in the region, adhered to the ends of the plurality of dielectric lavers without obstacles of presence of exposed electrode lavers and bonded electrically with the recessed ends of the plurality of electrode layers.
A capacitor comprising a main body, in which a plurality of dielectric layers and a plurality of electrode layers are alternately laminated, and an external electrode that is connected to at least part of the main body,
- the capacitor further comprising scanning marks produced by a laser beam on at least part of a connection surface of the main body where the external electrode is formed by metal spraying,
- wherein the scanning marks include concave-convex structures of the ends of the plurality of dielectric layers, which are made of a thermosetting resin, and a region that includes the ends of the plurality of electrode layers recessed with respect to the ends of the plurality of dielectric layers, and
- the external electrode is, in the region, adhered to the ends of the plurality of dielectric lavers without obstacles of presence of exposed electrode lavers and bonded electrically with the recessed ends of the plurality of electrode layers.
Dependencies are inferred from the claim text.