The present invention relates to a battery having a trench structure which can increase an effective area per unit area, and a fabrication method therefor. The battery according to the present invention forms trenches on thin film elements including a substrate, thereby increasing a contact interface...http://www.google.es/patents/US6495283?utm_source=gb-gplus-sharePatente US6495283 - Battery with trench structure and fabrication method thereof
Battery with trench structure and fabrication method thereof
