Package structure

A package structure, comprising:

• a first substrate, comprising a surface, wherein the surface includes an active region and a bonding region outside the active region, the first substrate comprises a component in the active region and a pad in the bonding region, and the pad is electrically connected to the component;
• a sealant, disposed on the surface of the first substrate and surrounding the active region, wherein the sealant comprises a breach at a side of the active region;
• a second substrate, integrated with the first substrate via the sealant, wherein the second substrate comprises a first opening and a second opening, and the first opening corresponds to the pad for providing a connection between an external device and the pad via the first opening, and the second opening corresponds to and exposes the breach;
• and
• a filler, disposed in the second opening and filling up the breach so that the first substrate, the second substrate, the sealant and the filler together form a sealed space for accommodating the component, wherein a size of the filler that is filled in the second opening becomes smaller along a direction perpendicular to the surface and away from the surface, a lateral surface of the filler is coplanar with a lateral surface of the first substrate and a lateral surface of the second substrate.