Multi-layered aluminum oxide capacitor

A multi-layered capacitor comprising:

• an aluminum substrate having at least one bending portion;
• anodized aluminum oxide layers partially formed on both sides of the aluminum substrate by anodizing the aluminum substrate such that the anodized aluminum oxide layers are vertically aligned with each other with respect to a surface of the aluminum substrate;
• metal electrode layers, formed on and in direct contact with the anodized aluminum oxide layers, respectively;
• and
• at least one lead portion formed between the metal electrode layers for applying electricity to the metal electrode layers which are bonded together,
• wherein the anodized aluminum oxide layers are not formed at the bending portion, and the anodized aluminum oxide layers function as dielectric layers of the capacitor,
• wherein the bending portion comprises a groove having a V-shaped cross-section, and
• a peak of the V-shaped cross-section of the groove faces a direction perpendicular to a stacking direction of the multi-layered capacitor.