Patent ID: 11908758
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A semiconductor package comprising:
a dual stiffener including an upper stiffener and a lower stiffener;
an upper package including an upper package substrate, a semiconductor chip centrally mounted on an upper surface of the upper package substrate, and the upper stiffener disposed along an outer edge of the upper package substrate;

a lower package substrate that centrally mounts the upper package and includes the lower stiffener disposed on an upper surface of the lower package substrate to surround the upper package substrate; and
a heat sink disposed on the upper package and including a lower surface thermally contacting an upper surface of the semiconductor chip,
wherein the upper stiffener has a square-ring shape and a rectangular cross-section, and
the lower stiffener has a square-ring shape and includes a fence portion having a rectangular cross-section and a cover portion extending horizontally from an upper surface of the fence portion to contact an upper surface of the upper stiffener.