Adhesive layer in multi-level packaging and organic material as a metal diffusion barrier
First Claim
1. A process for manufacturing a multilayer article of manufacture comprising:
- combining a substrate with a terminally unsaturated adhesive polyimide having the structure;
##STR6## wherein I is selected from the group consisting of an imide, isoimide, amic acid and an ester of said amic acid with an organo hydroxy compound having from one to six carbon atoms, and wherein I is based on a condensation product of a cyclic tetracarboxylic acid anhydride and a cyclic diamine, wherein said cyclic diamine is substituted completely or partially with an unsaturated heterocyclic diamine, a diamino organo phosphine, or a mixture thereof,n is from about one to about 100,R1 is an imide of an amino organo phosphine, an imide of an unsaturated heterocyclic amine or an imide of an unsaturated heterocyclic dicarboxylic acid,R2 is R1, an imide of an acetylene amine or an imide of a vinyl amine; and
adhering a surface of said adhesive polyimide opposite said substrate to a polyimide.
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Abstract
The disclosure describes a multilayer article of manufacture comprising a substrate having adhered to it a terminally unsaturated adhesive polyimide, where the surface of the adhesive opposite the substrate is adhered to a polyimide, the article further characterized in having one set or a plurality of alternating layers of the terminally unsaturated adhesive polyimide and the polyimide. In another embodiment, the article has at least one adhesive polyimide layer adhered to a metal substrate or an electrical circuit component such as an integrated circuit, or means for forming electrical connections in an electrical circuit such as metal conduits on the circuit or a wiring network embedded within a ceramic and/or polymer substrate.
In manufacturing the article of manufacture, a surface treatment technique such as wet process or a plasma/optional silane coupling agent may be applied to either the substrate, adhesive polyimide film or polyimide film prior to the bonding operation.
A novel adhesive polyimide is also described which is an adhesive polyimide such as ODPA-APB terminated with unsaturated heterocyclic monoamines such as azaadenines, aminobenzotriazoles, aminopurines or aminopyrazolopyrimidines and optionally anhydrides, aminoacetylenes, vinylamines or amino phosphines. The novel polyimide may also contain unsaturated heterocyclic groups in the polymer backbone or chain, either as a partial or complete replacement for the aromatic diamines used in synthesizing the polyimide. This novel adhesive polyimide in this invention acts as an adhesive layer for the polymer-substrate (copper, polymer, glass ceramic) interface as well as a copper diffusion barrier layer for the polymer-copper interface.
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Citations
14 Claims
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1. A process for manufacturing a multilayer article of manufacture comprising:
combining a substrate with a terminally unsaturated adhesive polyimide having the structure;
##STR6## wherein I is selected from the group consisting of an imide, isoimide, amic acid and an ester of said amic acid with an organo hydroxy compound having from one to six carbon atoms, and wherein I is based on a condensation product of a cyclic tetracarboxylic acid anhydride and a cyclic diamine, wherein said cyclic diamine is substituted completely or partially with an unsaturated heterocyclic diamine, a diamino organo phosphine, or a mixture thereof,n is from about one to about 100, R1 is an imide of an amino organo phosphine, an imide of an unsaturated heterocyclic amine or an imide of an unsaturated heterocyclic dicarboxylic acid, R2 is R1, an imide of an acetylene amine or an imide of a vinyl amine; and adhering a surface of said adhesive polyimide opposite said substrate to a polyimide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
Specification