Processes and structures for IC fabrication
View Patent ↗The present invention discloses methods and apparatuses for the separations of IC fabrication and assembling of separated IC components to form complete IC structures. In an embodiment, the present fabrication separation of an IC structure into multiple discrete components can take advantages of dedicated IC fabrication facilities and achieve more cost effective products. In another embodiment, the present chip assembling provides high density interconnect wires between bond pads, enabling cost-effective assembling of small chip components. In an aspect, the present process coats the component surfaces to facilitate the bonding of the bond pads. In another aspect, the present process coats the bond pads with shelled capsules to facilitate the bonding of the bond pads.
1. A method for interconnecting bond pads between integrated components, the method comprising:
treating the surface of at least one integrated component, except the surface of the bond pads, so that a liquid metal will not wet or stick to it;
coating a bond pad surface with the liquid metal;
contacting the surfaces of the two integrated components so that the bond pads of the two integrated components are aligned, and wherein the liquid metal makes electrical contact between the two surfaces of the bond pads.
2. A method as in claim 1 wherein the surfaces of both integrated components are treated.
3. A method as in claim 1 wherein the bond pad surface of the treated integrated component is coated with the liquid metal.
4. A method as in claim 1 further comprising curing the contact.
5. A method as in claim 1 wherein the liquid metal is mixed with fine particles which alloy to form a higher melting point metal.