Method of making a thin conformal high-yielding multi-chip module
First Claim
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1. A method of making a multi-chip module, comprising the steps of:
- a) thinning at least one integrated circuit to a thickness of less than or equal to 50 um, where the at least one integrated circuit has a circuit side and a backside;
b) testing the thinned at least one integrated circuit;
c) bonding the tested at least one thinned integrated circuit to a bonding substrate;
d) putting a layer of interconnect material directly over the at least one thinned integrated circuit and the bonding substrate;
e) putting a dielectric layer over said interconnect layer;
f) opening vias in said dielectric layer;
g) repeating steps (d), (e), and (f) for each additional interconnect layer required; and
h) removing the bonding substrate to form a multi-chip module.
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Abstract
A method of making a multi-chip module by thinning individual integrated circuit die or an integrated circuit wafer containing multiple integrated circuits; bonding thinned dice or a thinned wafer to a mylar, polyimide, semiconductor, or ceramic substrate; depositing at least one interconnect material over the wafer, where the first interconnect layer is deposited directly over the wafer; depositing a dielectric layer over each of the interconnect layers; opening vias in the dielectric layers in order to interconnect the dice and multi-chip module as required; and removing the substrate to form a thin, conformal, and high-yielding multi-chip module.
131 Citations
48 Claims
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1. A method of making a multi-chip module, comprising the steps of:
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a) thinning at least one integrated circuit to a thickness of less than or equal to 50 um, where the at least one integrated circuit has a circuit side and a backside; b) testing the thinned at least one integrated circuit; c) bonding the tested at least one thinned integrated circuit to a bonding substrate; d) putting a layer of interconnect material directly over the at least one thinned integrated circuit and the bonding substrate; e) putting a dielectric layer over said interconnect layer; f) opening vias in said dielectric layer; g) repeating steps (d), (e), and (f) for each additional interconnect layer required; and h) removing the bonding substrate to form a multi-chip module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of making a multi-chip module, comprising the steps of:
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a) thinning at least one integrated circuit to a thickness of less than or equal to 50 um, where the at least one integrated circuit has a circuit side and a backside; b) testing the thinned at least one integrated circuit; c) bonding the tested at least one thinned integrated circuit to a bonding substrate; d) putting a dielectric layer over said at least one thinned integrated circuit; e) etching the dielectric layer to the surface of the at least one integrated circuit so that dielectric material remains along the edge of the at least one integrated circuit for rounding the edges of the at least one integrated circuit; f) putting a layer of interconnect material over the at least one integrated circuit and dielectric layer at the edge of the at least one integrated circuit; g) putting a dielectric layer over the interconnect layer; h) repeating steps (f) and (g) for each additional interconnect layer required; and i) removing the bonding substrate to form a multi-chip module. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification