Patent ID: 7679110

Claim:
A method of producing an electrochemical transistor device comprising the steps of: providing a flexible substrate; arranging a layer of organic material on said substrate, which material has the ability of electrochemically altering its electrical conductivity through change of redox state thereof; providing a gate electrode of electrically conductive material spatially separated from said layer of organic material; arranging a solidified electrolyte in direct electrical contact a with at least a portion of said gate electrode; arranging said solidified electrolyte in direct electrical contact with, and covering, only a portion of said layer of organic material, such that the layer of organic material comprises a source contact, a drain contact and an electrochemically active element having a transistor channel arranged between and electrically connecting said source and drain contacts, such that current between said source contact and drain contact is controllable by means of a voltage applied to said gate electrode.