Patent ID: 8437141

Claim:
A transponder comprising: a first electric contact having a first surface area with a first wettability; a substrate, which comprises a second surface area having a second wettability and a surface structure formed on a third surface area of the substrate and having a third wettability and being adjacent to said second surface area; and said first electric contact being attached on said substrate so that said first surface area of said first electric contact is adjacent to said second surface area, and said second surface area is located between said first surface area and said third surface area, said first and said second wettability being higher than said third wettability; wherein the wettability of the first, second, and third surface areas represents the degree to which the first, second, and third surface areas attract or repel a conductive glue or a conductive solder; an antenna having a first contact end being electrically connected to said first electric contact; and an electric device which has a top surface, a bottom surface and a plurality of side surfaces; said electric device being arranged on said surface structure formed on said third surface area of said substrate with its bottom surface and comprising device contacts being electrically connected to said first electric contact; wherein said bottom surface of said electric device partly overlaps said second surface area without reaching said first surface area of said first electric contact.