Semiconductor package structure having interposer substrate, and stacked semiconductor package structure including the same

A semiconductor package structure includes a package substrate; a semiconductor chip on the package substrate and electrically connected to the package substrate; an interposer substrate above the package substrate and the semiconductor chip, wherein the interposer substrate includes a cavity recessed inward from a lower surface thereof, wherein the semiconductor chip is positioned within the cavity, at least from a plan view; and an adhesive layer positioned inside and outside the cavity, wherein the adhesive layer is formed on all of upper and side surfaces of the semiconductor chip, or on the side surfaces of the semiconductor chip.