Patent ID: 8441411

Claim:
A method of manufacturing an RFID device including a flat electrochemical cell for generating an electrical current, said method including the steps of: providing a first substrate and a second substrate, at least one of which includes a plurality of layers, said first substrate including a first side and a second side; providing an RFID assembly on said second side of said first substrate, including a RFID antenna, an RFID element in communication with the RFID antenna, and a plurality of electrical contacts in electrical communication with the RFID element; printing or laminating a cathode layer on said first side of said first substrate; printing or laminating an anode layer on said first side of said first substrate; providing an electrolyte layer including a viscous liquid in contact with said cathode layer and also in contact with said anode layer; electrically coupling the cathode layer, the anode layer, and the plurality of electrical contacts; and connecting said second substrate to said first substrate to substantially seal an inner space containing said cathode layer, said anode layer, and said electrolyte layer, further comprising the step of providing a frame on said first side of said first substrate to form the inner space containing said electrolyte, and also containing at least a major portion of said cathode layer and at least a major portion of said anode layer within said inner space, and further including the step of providing the frame as a third substrate including a web having a plurality of laminated layers, wherein at least one of said laminated layers is a pressure-sensitive adhesive.