Method of Precise Registration of the Conductive Line Planes of a Multilayer Printed Circuit Card
Original Publication Date: 1980-Apr-01
Included in the Prior Art Database: 2005-Feb-13
For a precise registration of the conductive line planes in the production of multilayer printed circuit cards, two registration lands in the non-active panel area are used to align the individual layers and to prevent mis-registration. These two registration lands 2 are added to the glassmasks 1 which are necessary to produce the pattern of the printed circuitry (Fig. 1).