Flow Controllable B-Stageable Composition
OwnerJayesh Shah, Jing Faninventors
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Abstract
A B-stageable dielectric composition for flow control during electronic package assembly is described. The B-stageable composition comprises a resin matrix and flow control agents. The B-stageable composition is particularly useful in laminating substrates for electronic devices and electronic components, where the flow property of the composition must be tightly controlled during the assembly.
Claims10
A laminate composition, wherein said composition comprises a B-staged product of a resin matrix and flow control agents, wherein said B-staged product exhibits tackiness but substantially no flow upon activation.
A B-staged film deposited on a substrate wherein said film exhibits tackiness and substantially no flow upon activation, wherein said B-staged film is a B-staged product of a resin matrix and flow control agents.
A method of laminating a first substrate to a second substrate with a composition comprising a resin matrix and flow control agents;
- wherein at least one of the substrate contains perforations, vias, holes, mask, I/O inputs, electronic component or mixtures thereof and wherein said method comprises:
- (a) applying said composition onto a first substrate;
- (b) B-staging said composition into B-staged film;
- (c) contacting a second substrate onto said B-staged film;
- and
- (d) activating said B-staged film by radiation, heat, or pressure and mixtures thereof;
- whereby, the first substrate becomes bonded to the second substrate, and wherein the flow control agents are selected for the group consisting of styrene-butadiene core-shell polymer, siloxane core-shell polymer, acrylonitrile-butadiene-styrene core shell polymer, methacrylate butadiene styrene core shell polymer, polystyrene-1,4-polybutadiene-syndiotactic poly(methyl methacrylate) triblock copolymer, poly(methyl methacrylate)-poly(butyl acrylate)-poly(methyl methacrylate) triblock copolymer and mixtures thereof.
Dependencies are inferred from the claim text.