Patent ID: 8159811

Claim:
A metal capacitor comprising: a longitudinally extending metal member comprising a groove forming portion disposed between an electrode withdrawing portion and a sealing portion respectively disposed at opposing longitudinal ends of the metal member, the groove forming portion having a plurality of grooves formed in two opposing sides thereof and extending in a direction transverse the longitudinal direction; a metal oxide layer being formed on the two opposing sides of the metal member and grooves therein; an insulating layer being formed on each of a portion of the electrode withdrawing portion and a portion of the sealing portion of the metal member; a pair of main electrode layers, each main electrode layer being formed on the metal oxide layer that is formed in the grooves and on the two opposing sides of the groove forming portion of the metal member, each main electrode layer filling in the plurality of grooves; and a conductive connecting layer extending between the pair of main electrode layers to electrically connect one to the other, the conductive connecting layer extending over the insulating layer on the sealing portion of the metal member, wherein a pair of capacitor lead terminals are respectively connected to the electrode withdrawing portion of the metal member and the main electrode layers.