Patent ID: 8139341

Claim:
A film capacitor comprising a roll having a stacked structure, including a first stacked film assembly, which has a stack of dielectric films including a floating electrode therein, a first metal film and a second metal film disposed in sandwiching relation to the first stacked film assembly on opposite surfaces thereof, and a second stacked film assembly, which has a stack of dielectric films including a floating electrode therein, a first terminal electrically connected to an end of the roll, and a second terminal electrically connected to another end of the roll; wherein the floating electrode comprises a cluster of small electrodes that are independent of each other; each of the small electrodes and the first metal film form a capacitor therebetween, and each of the small electrodes and the second metal film form a capacitor therebetween; the first metal film extends to a side edge of the first stacked film assembly so as to be electrically connected to the first terminal; and the second metal film extends to another side edge of the first stacked film assembly so as to be electrically connected to the second terminal.