Patent ID: 11901276
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method of manufacturing a semiconductor package, the method comprising:
forming a redistribution structure; and
disposing a semiconductor chip on the redistribution structure,
wherein the forming of the redistribution structure comprises:
forming a first insulating layer;
forming a lower seed layer on the first insulating layer;
forming a lower bump pad on the lower seed layer;
forming at least one redistribution pattern electrically connected to the lower bump pad and at least one insulating layer on the first insulating layer;
forming a pad opening of the first insulating layer to expose a first part the lower seed layer, by removing a portion of the first insulating layer;
removing the first part of the lower seed layer exposed through the pad opening of the first insulating layer to expose a bottom surface of the lower bump pad; and
forming an external connection bump connected to the bottom surface of the lower bump pad,
wherein a second part of the lower seed layer remaining after the removing of the first part of the lower seed layer is in physical contact with an outer portion of the bottom surface of the lower bump pad,
the external connection bump is in physical contact with a central portion of the bottom surface of the lower bump pad, and
the central portion of the bottom surface of the lower bump pad and the outer portion of the bottom surface of the lower bump pad are flat.