Patent ID: 8917491
Filing Date: 2014-12-23
Classification: H01G

Abstract:
1. A porous capacitor comprising: a first conductor layer having a first thickness; a second conductor layer opposed to the first conductor layer at a predetermined distance; a dielectric layer made of an oxidized valve metal and disposed between the first conductor layer and the second conductor layer, the dielectric layer having formed therein a large number of holes and oriented substantially orthogonal to the first conductor layer and the second conductor layer; first electrodes formed of a conductive material filled in at least a part of the large number of holes, the first electrodes being electrically connected to the first conductor layer, while insulated from the second conductor layer; and second electrodes formed of a conductive material filled in at least a part of the large number of holes, the second electrodes being electrically connected to the second conductor layer, while insulated from the first conductor layer, wherein the first thickness is equal to or greater than half of the inner diameter of the holes and smaller than the inner diameter of the holes, and wherein the first conductor layer and/or the second conductor layer is formed of Ti, Ta, Mo or W.