Magnetic field shielding for packaging build-up architectures

A method of forming a packaging build-up, the method comprising:

• building-up a plurality of alternating layers of patterned conductive material and insulating material;
• integrating a permanent magnet with the build-up;
• and
• integrating a magnetic field shielding material with the build-up to restrict the field of the magnet beyond a region of the build-up occupied by the magnet.

An apparatus comprising:

• a packaging build-up, the build-up including a plurality of alternating layers of patterned conductive material and insulating material;
• a permanent magnet physically coupled to the build-up;
• a magnetic field shielding material disposed in contact with the build-up;
• and
• a micro electromechanical system (MEMS) having one or more released member disposed on a same side of the magnetic field shielding material as the magnet,
• wherein the magnetic field shielding material comprises at least one of:
• a bottom-side field shielding material extending over an area of the build-up and disposed facing a first side of the magnet opposite the released member;
• or
• a top-side field shielding material extending over an area of the build-up and disposed facing a second side of the magnet with the released member disposed between the top-side field shielding material and the magnet.

A mobile device, comprising:

• a processor;
• a battery;
• and
• an apparatus, comprising:
• a packaging build-up, the build-up including a plurality of alternating layers of patterned conductive material and insulating material;
• a first device physically coupled to the build-up and electrically coupled to at least one of the conductive material layers;
• a magnetic field shielding material disposed in contact with the build-up and in proximity to the first device to restrict a magnetic field within the build-up,
• wherein the apparatus is coupled to the processor and battery.