Magnetic field induction bonding technique

摘要

Methods and systems for reflowing an adhesive are described. The adhesive may be reflowed by applying an alternating magnetic field at a particular frequency selected to be natural resonant frequency resonant of magnetizable material embedded in the adhesive. The alternating magnetic field at the particular frequency resonates the magnetizable material, inductively producing heat. The heat reflows the adhesive.

主权项

1. A device comprising:
a first substrate; a second substrate; a first adhesive layer disposed between and bonding the first substrate and the second substrate, wherein the first adhesive layer comprises a first binder and first magnetizable particles of a first size, the first magnetizable particles to vibrate and generate heat when a first magnetic field oscillating at a first frequency is applied, the first magnetizable particles comprising at least one of iron, cobalt, nickel, or gadolinium; a third substrate; and a second adhesive layer disposed between and bonding the second substrate and the third substrate, wherein the second adhesive layer comprises a second binder and second magnetizable particles of a second size, wherein the second size is different from the first size, the second magnetizable particles to vibrate and generate heat when a second magnetic field oscillating at a second frequency is applied, wherein the second frequency is different from the first frequency.