摘要:
Microelectronic and optoelectronic packaging embodiments are described with underfill materials including polybenzoxazine, having the general formula:
摘要:
In some embodiments, a method includes providing a composition which includes a base at least partially filled with filler particles and applying the composition as an underfill composition. At least some of the filler particles are electrically conductive.
摘要:
In some embodiments, a method includes providing a composition which includes a base at least partially filled with filler particles and applying the composition as an underfill composition. At least some of the filler particles are electrically conductive.
摘要:
An embodiment of the present invention is a technique to form a resin. A mixture is formed by a curing agent dissolved in the epoxy resin. The epoxy resin contains a first rigid rod mesogen. The curing agent contains a second rigid rod mesogen and one of a hydroxyl, amine, and anhydride.
摘要:
Microelectronic and optoelectronic packaging embodiments are described with underfill materials including polybenzoxazine, having the general formula:
摘要:
Dielectric compositions encompassing one or more poly(arylene ether) polymers are provided. The dielectric compositions have the repetitive structural unit: where n=1 to 200, Y and Ar are each a divalent arylene radical, Y derived from bisphenol compounds of general formula HO—Y—OH, Ar derived from difluoro diarylacetylenes and/or ethynylated benzophenones of general formula F—Ar—F and Z is optionally hydrogen, a methyl group or derived from a monofluoro-benzophenone derivative of general formula Z—F. Such poly(arylene ether) polymers are employed with a variety of microelectronic devices, for example, integrated circuits and multichip modules.
摘要:
Nanoporous polymeric materials are fabricated in which polymeric strands are crosslinked via ring structures. Preferred ring structures are formed de novo during crosslinking, and at least some of the ring structures are preferably included in the backbones of the strands. At least one of the ring structures may advantageously comprise an aromatic structure, and may more advantageously comprise a benzyl moiety. Especially preferred polymers comprise a poly(arylene ether) synthesized from a difluoroaromatic portion and an aromatic bisphenolic portion. In another preferred aspect, the difluoroaromatic portions of the poly(arylene ether) carry at least two different crosslinking functionalities. In an even more preferred aspect, the crosslinking functionalities comprise an ethynyl and a tetracyclone. Nanoporosity is preferably introduced by thermolyzing one or more thermolabile portions in the crosslinked polymer. An especially preferred thermolabile portion comprises ethylene glycol-poly(caprolactone).
摘要:
Compositions and methods are provided in which nanoporous polymeric materials are produced via stable, polymeric template strands having reactive groups that can be used for forming crosslinking functionalities and/or adding thermolabile groups, wherein at least some of the thermolabile groups are thermolyzed to produce voids. The template strands preferably comprise aromatic systems and vicinal keto groups, such as a polybenzil formed from fluorene bisphenol or 3,3'-dihydroxytolane with 4,4'-difluorobenzil. At least some of the reactive groups preferably react using an addition-elimination reaction. Especially preferred thermolabile groups comprise poly(propylene oxide), and especially preferred crosslinkers comprise ethynyl-moiety and tetracyclone moieties.
摘要:
A method for low temperature bumping is disclosed. A resin capable of being cross-linked by free-radical or cationic polymerization at low temperature is provided. Electrically conductive particles are then added to the resin to form a mixture. The mixture is then activated by heat or exposure to light to polymerize the mixture. In an alternative embodiment, a vinyl ether resin is used, to which electrically conductive particles are added. The mixture is polymerized by exposure to light.
摘要:
In some embodiments, a method includes providing a composition which includes a base at least partially filled with filler particles and applying the composition as an underfill composition. At least some of the filler particles are electrically conductive.