Patent ID: 8134826

Claim:
A capacitor comprising: a pair of plate-shaped electrically conductive layers that are disposed at a determinable interval so as to face each other; a plurality of substantially or nearly tubular dielectric materials that are formed of anodic metal oxide and that extend from an inside principal surface of one of the electrically conductive layers to an inside principal surface of the other electrically conductive layer in a direction substantially or nearly orthogonal to the inside principal surfaces of the electrically conductive layers wherein opening portions at both ends of each tubular dielectric material are connected to the inside principal surfaces of the pair of electrically conductive layers; first electrodes which are filled in hollow portions of the tubular dielectric materials so that one ends thereof are connected to one of the electrically conductive layers and the other ends thereof are insulated from the other electrically conductive layer; and a second electrode that is filled in voids between the respective tubular dielectric materials so that one end thereof is connected to the other electrically conductive layer and the other end of the second electrode is insulated from the one electrically conductive layer.