Flexible underfill compositions for enhanced reliability
AssigneeIntel Corporation
InventorsDingying Xu, Nisha Ananthakrishnan, Hong Dong, Rahul N. Manepalli, Nachiket Raravikar, Gregory S. Constable
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Abstract
Underfill materials for fabricating electronic devices are described. One embodiment includes an underfill composition including an epoxy mixture, an amine hardener component, and a filler. The epoxy mixture may include a first epoxy comprising a bisphenol epoxy, a second epoxy comprising a multifunctional epoxy, and a third epoxy comprising an aliphatic epoxy, the aliphatic epoxy comprising a silicone epoxy. The first, second, and third epoxies each have a different chemical structure. Other embodiments are described and claimed.
Claims10
An underfill composition comprising:
- an epoxy mixture comprising a first epoxy comprising a bisphenol epoxy, a second epoxy comprising a multifunctional epoxy, and a third epoxy comprising an aliphatic epoxy, the aliphatic epoxy comprising a silicone epoxy;
- the first, second, and third epoxies each having a different chemical structure;
- and
- a filler;
- wherein the silicone epoxy has the following structure:
- where R is a group selected from the group consisting of methyl groups and ethyl groups, and wherein at least one of the R sites includes a methyl group and at least one of the R sites includes an ethyl group.
An underfill composition comprising:
- an epoxy mixture comprising a first epoxy comprising a bisphenol epoxy, a second epoxy comprising a multifunctional epoxy, and a third epoxy comprising an aliphatic epoxy, the aliphatic epoxy comprising a silicone epoxy;
- the first, second, and third epoxies each having a different chemical structure;
- and
- a filler;
- wherein the silicone epoxy has the following structure:
- where R is a group selected from the group consisting of methyl groups and ethyl groups, wherein a plurality of the R sites include a methyl group and a plurality of the R sites include an ethyl group.
Dependencies are inferred from the claim text.