Capacitor

A capacitor comprising:

• a substrate with conductivity;
• a plurality of fiber-shaped conductive members on the substrate and electrically connected to the substrate;
• a dielectric layer covering a surface of the fiber-shaped conductive members;
• and
• a conductor layer covering a surface of the dielectric layer,
• wherein
• the plurality of fiber-shaped conductive members, the dielectric layer, the conductor layer, a space among the plurality of fiber-shaped conductive members covered with the dielectric layer, and the conductor layer constitute a composite bulk member,
• in a first section of the capacitor in the thickness direction of the substrate:
• each of the fiber-shaped conductive members has a maximum height Hmax,
• the composite bulk member has a first outer peripheral region on a first side and a second outer peripheral region on a second side, each of the first outer peripheral region and the second outer peripheral region occupying a region up to twice the maximum height Hmax from an outer edge of the composite bulk member, and a central region between the first outer peripheral region on the first side and the second outer peripheral region on the second side, and
• at least one of the first outer peripheral region and the second outer peripheral region includes a part where a first total area occupancy proportion of the fiber-shaped conductive members, the dielectric layer, and the conductor layer is higher than a second total area occupancy proportion of the fiber-shaped conductive members, the dielectric layer, and the conductor layer in the central region.

A capacitor comprising:

• a substrate with conductivity;
• a plurality of fiber-shaped conductive members on the substrate and electrically connected to the substrate;
• a dielectric layer covering a surface of the fiber-shaped conductive members;
• and
• a conductor layer covering a surface of the dielectric layer,
• wherein
• the plurality of fiber-shaped conductive members, the dielectric layer, the conductor layer, a space among the plurality of fiber-shaped conductive members covered with the dielectric layer, and the conductor layer constitute a composite bulk member,
• in a first section of the capacitor in a thickness direction of the substrate each of the fiber-shaped conductive members has a maximum height Hmax, and
• in a second section of the capacitor in parallel with an in-plane direction of the substrate:
• the composite bulk member has an outer peripheral region that occupies a region up to twice the maximum height Hmax from an outer edge of the composite bulk member, and a central region surrounded by the outer peripheral region, and
• the outer peripheral region includes a part where a first total area occupancy proportion of the fiber-shaped conductive members, the dielectric layer, and the conductor layer is higher than a second total area occupancy proportion of the fiber-shaped conductive members, the dielectric layer, and the conductor layer in the central region.