INSULATING FILM FOR CAPACITOR TYPE STORAGE BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a thin film capacitor type storage battery with high electrostatic capacity and excellent strength.SOLUTION: A capacitor type storage battery includes a substrate composed of a conductive film or a semiconductor film and an insulating film which are laminated in this order, and a first conducting path and a second conducting path that are formed in parallel with each other on the insulating film. Furthermore, a surface of the substrate with which the insulating film is in contact has projections and recesses with the maximum height of the projections of 10 μm and the maximum width of the projections of 10 μm. The projections are disposed with intervals for each other. The maximum width of the recesses disposed at the interval is 3 μm. The insulating film disposed to contact with the projections and recesses on the surface of the substrate comprises two or more layers including a first adhesive layer and a second adhesive layer. The first adhesive layer disposed adjacent to the first substrate is a layer closely adhered between the projections and recesses on the surface of the first substrate. The second adhesive layer disposed at a side nearer to the first and second conductive paths than the first adhesive layer is a layer for preventing the projections and recesses on the surface of the first substrate from contacting with the first and second conductive paths.