Patent ID: 11948921
Assignee: nan
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method, comprising:
attaching a preformed die attach film (DAF) or a preformed film over die (FOD) material directly to a back side of a singulated semiconductor die;
after attaching the DAF or the FOD material, laminating a polymer film over an active surface comprising bond pads of the singulated semiconductor die;
forming via holes through the polymer film to expose bond pads on the active surface;
filling the via holes with conductive material;
inverting the singulated semiconductor die and placing the inverted singulated semiconductor die on a substrate with conductive material-filled via holes through the polymer film aligned with terminal pads on the substrate; and
bonding the polymer film to the substrate with the conductive material in contact with the terminal pads.