Patent ID: 11973074
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method, comprising:
forming a photonic package, wherein forming the photonic package comprises:
patterning a silicon layer to form a waveguide;
forming a first interconnect structure over the waveguide; and
bonding a first semiconductor die to the first interconnect structure;

forming an interconnect device, wherein the interconnect device is free of active devices, wherein forming the interconnect device comprises:
forming a routing structure on a first side of a substrate; and
forming conductive connectors on and electrically connected to the routing structure;

forming an interposer structure, wherein forming the interposer structure comprises:
forming a first via on a first carrier;
placing the interconnect device on the first carrier;
encapsulating the first via and the interconnect device with an encapsulant; and
forming a second interconnect structure on the interconnect device and the first via, wherein the second interconnect structure is electrically connected to the first via and to the conductive connectors of the interconnect device; and

bonding the photonic package and a second semiconductor die to the second interconnect structure, wherein the photonic package and the second semiconductor die are electrically connected through the interconnect device to each other.