Method for making a multilayer board having a cavity

摘要

A method for making a multilayer board with a cavity comprises forming a composite comprising a plurality of dielectric layers (2) and at least one release layer (3) provided between at least one adjacent pair of dielectric layers, and forming a cavity having a bottom face defined by the release layer (3) by removing a portion (2b) of the composite located above the release layer. The portion to be removed may be formed by cutting (4) with blades (5) through the composite or by other means such as laser cutting. The method facilitates production of multilayer ceramic boards with cavities having high planarity.