| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery suitable for a portable information terminal or a wearable device, or to provide an electronic apparatus of a novel structure having various shapes of appearance, and a secondary battery suitable for that shape.SOLUTION: A secondary battery has a film provided with recesses or protrusions for relaxing the stress of the film occurring upon application of an external force, where the height of the recess or protrusion is different in the center and at the end of the film, and the end of the film is sealed with an adhesive layer. The recesses or protrusions of the film are formed by pressing, e.g., embossing.SELECTED DRAWING: Figure 2 |
