Abstract
Embedded capacitor technology can improve electrical performance and reduce assembly cost compared with traditional discrete capacitor technology. Polymer-ceramic composites have been of great interest as embedded capacitor material because they combine the processability of polymers with the desired electrical properties of ceramics. Dispersion of ceramic particles is a critical factor to affect the effective dielectric constant of polymer ceramic composite. Bi-block copolymer surfactants have been used to prevent agglomeration of the ceramic particles. It was found that bi-block copolymer surfactant can improve the ceramic dispersion better than monomer surfactant. Using bi-block copolymer surfactant, higher dielectric constant was achieved at lower ceramic loading level. This high dielectric constant polymer ceramic composite material has much better mechanical properties and can be used for the integral capacitors in the SOP (system on a package) substrate.
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