Electrode device

An electrode device for measuring an electric biosignal, wherein the electrode device comprises:

• a) a flexible PCB (printed circuit board) having
• at least a flexible support layer and a trace layer on a first side of the flexible PCB, the trace layer comprising at least two electrode pads for skin contacts and, for each electrode pad, a solder pad and a conducting trace for forming a galvanic connection between the electrode and the solder pad, and
• an opening through the layers, wherein the opening defines a flexible, elongated cantilever in a central portion of the flexible PCB such that the flexible cantilever has a base end connected to the central portion and a free end separated from the central portion, wherein the solder pads are located at the free end and the free end bends to a second side of the flexible PCB opposite to the first side, and
• b) a connector component on the second side, soldered to the solder pads on the free end of the cantilever,
• wherein the trace layer is provided with a gold plating, and the gold-plated trace layer is provided with a solder mask layer that overlaps over the electrode pads in peripheries of the electrode pads such that only gold-plated center portions of the electrode pads are exposable to the skin contact.