| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid battery capable of eliminating the need for considering the thickness of a protection layer because it does not affect on the total thickness of the battery, preventing a protection layer from generating crack, and assuring reliability even if wiring is done freely on the protection layer. SOLUTION: The solid battery comprises a substrate 11, a lower collecting body layer 12 sequentially laminated on the substrate, a lower electrode layer 13, an electrolyte layer 14, a power generating element having an upper electrode layer 15 and an upper collecting body layer, and the protection layer 17 for covering at least side surfaces of the power generating element. At least a portion of the protection layer has a smooth surface without steps, extending from the upper part covering the side surface of the upper collecting body layer toward the skirt part abutting the substrate. An angle ofθformed by the surface of the substrate and a shortest slant line connecting a point of the edge of the upper collecting body layer abutting the portion having a smooth surface and a point on the circumference of the contact surface of the substrate and the protection layer is 70°or less. COPYRIGHT: (C)2005,JPO&NCIPI
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