The areas that need to have conductive paths are then exposed with a laser beam. The additive is activated and immersed in a copper bath during the subsequent metallization process, which shows up the conductive paths in a sharp outline. Various coatings, for example nickel, gold, silver or soldering tin, can be applied one after the other. Electric circuits can be soldered onto these conductive areas.
The small-sized MID technology has already proven itself in many everyday applications. MIDs can for example be found in cars. A compact MID pressure sensor in the ESP brake control system converts the hydraulic braking pressure into an electrical signal. MIDs are also used in mobile telephones. The three-dimensional circuit boards on the plastic housing inside the mobile phone act as an integrated antenna. Applications can also be found in, among others, medical, air-conditioning and safety technology.