Patent ID: 7482620

Claim:
A supported or self-supporting electrochemical transmitter device comprising: a transistor member electrically connected to an antenna member arranged for transmitting a signal, wherein the transistor member has a source contact, a drain contact, at least one gate electrode, an electrochemically active element arranged between, and in direct electrical contact with, the source and drain contacts, which electrochemically active element comprises a transistor channel and is of a material comprising an organic material having the ability of electrochemically altering its conductivity through change of redox state thereof, and a solidified electrolyte in direct electrical contact with the electrochemically active element and said at least one gate electrode and interposed between them in such a way that electron flow between the electrochemically active element and said gate electrode(s) is prevented, flow of electrons between the source contact and the drain contact being controllable by means of a voltage applied to said gate electrode(s); and wherein the antenna member has a first antenna pad and a second antenna pad, the first antenna pad comprising a metal or electrically conductive organic or polymer material, and being in direct electrical contact with the source of the transistor member, the second antenna pad comprising a metal or electrically conductive organic or polymer material, and being in direct electrical contact with the drain contact of the transistor member wherein no wires contact the first antenna pad except those originating from the source contact of the transistor member, and no wires contact the second antenna pad except those originating from the drain contact of the transistor member.