Embedded active Components
Also active components can be built directly into PCB´s !
A lot of investigation and experiments have been done with this type of embedding.
The simplest version is a SMT chip embedded in a multilayer, similar as in figures below. The connections to the chip is then made by means of through holes through standard SMT leads, or laser vias to the component leads. The component connection is then made chemically, followed by electroplating which means solder free assembly.
Lower capacitances due to shorter routing when dies are used and possibility to shield sensitive circuits totally are among the advantages. Well tested and in-circuit fully protected components must be used for natural reasons. Several patents have been granted on the technology but most of the technology is free to be used. You are welcome to ask us questions as we started testing the technology and embedded SMT chips in PCBs already 2002.
Here below are build samples and micro sections from production done in Ireland.