Packaging substrate and method of manufacturing the same

A packaging substrate comprising a core layer,

• wherein the core layer comprises:
• a glass substrate including a first surface and a second surface facing each other;
• and
• at least two or more cavity portions each having an opening open in a direction toward the first surface or a direction toward the second surface, and
• the two or more cavity portions have different depths,
• wherein the cavity portion comprises:
• a first cavity portion open and recessed in the direction toward the first surface and having a first depth;
• and
• a third cavity portion having a third depth passing through the first surface and the second surface,
• wherein a third cavity element is arranged in the third cavity portion, an insulating layer is disposed on the third cavity element and connection electrodes are disposed on the third cavity element in both direction toward the first surface and the second surface.