Capacitor and method for producing capacitor

A method for producing a capacitor, comprising:

• producing a plurality of holes or trenches on a substrate to obtain a first structure;
• producing a first laminated structure on the first structure, wherein the first laminated structure comprises m dielectric layers and m+1 conductive layers, the m dielectric layers and the m+1 conductive layers form a structure that a conductive layer and a dielectric layer are adjacent to each other, and m is a positive integer;
• producing a first insulating layer on the first laminated structure to obtain a second structure;
• turning over the second structure;
• removing the substrate to expose the first laminated structure;
• producing a second laminated structure on the first laminated structure, wherein the second laminated structure comprises k dielectric layers and k conductive layers, the k dielectric layers and the k conductive layers form a structure that a conductive layer and a dielectric layer are adjacent to each other and form, with the first laminated structure, a laminated structure that a conductive layer and a dielectric layer are adjacent to each other, the laminated structure forms a columnar structure at the hole or trench, and k is a positive integer;
• producing a second insulating layer on the second laminated structure;
• and
• producing a first electrode and a second electrode, wherein the first electrode is electrically connected to an odd-numbered conductive layer among the m+k+1 conductive layers, and the second electrode is electrically connected to an even-numbered conductive layer among the m+k+1 conductive layers.