US Patent No. 10,658,111

CAPACITOR


Patent No. 10,658,111
Issue Date May 19, 2020
Title Capacitor
Inventorship Kazuo Hattori, Nagaokakyo (JP)
Noriyuki Inoue, Nagaokakyo (JP)
Hiromasa Saeki, Nagaokakyo (JP)
Kensuke Aoki, Nagaokakyo (JP)
Ken Ito, Nagaokakyo (JP)
Assignee MURATA MANUFACTURING CO., LTD., Nagaokakyo-Shi, Kyoto-Fu (JP)

Claim of US Patent No. 10,658,111

1. A capacitor comprising:a conductive porous substrate having at least two electrostatic capacitance forming sections, each of the at least two electrostatic capacitance forming sections including a porous portion of the conductive porous substrate, a dielectric layer on the porous portion, and an upper electrode on the dielectric layer, wherein
the at least two electrostatic capacitance forming sections are electrically connected in series by the conductive porous substrate,
the at least two electrostatic capacitance forming sections are adjacent to each other and are isolated by a groove, and
the conductive porous substrate includes, for each of the at least two electrostatic capacitance forming sections, a first porosity portion and a second porosity portion, the first porosity portion having a higher porosity than the second porosity portion.