Thermosetting encapsulants for electronics packaging

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 73/00 (2006.01) H01L 23/29 (2006.01) H01L 23/31 (2006.01) H01L 23/498 (2006.01)

Patent

CA 2274864

An electronic package is provided wherein a semiconductor device on a substrate is encapsulated with a thermally reworkable encapsulant composition comprising: (a) a thermally reworkable cross-linked resin produced by reacting at least one dienophile having a functionality greater than one and at least one 2,5-dialkyl substituted furan-containing polymer, and (b) at least one filler present from 25 to 75 percent by weight based upon the amount of components (a) and (b). Such a process provides a readily reworkable electronic package.

Boîtier électronique dans lequel est encapsulé un composant à semi-conducteur sur un substrat au moyen d'une composition d'encapsulation pouvant être reprise à la chaleur et contenant: (a) une résine réticulée pouvant être refaçonnée à la chaleur et préparée par réaction d'au moins un diénophile dont la fonctionnalité est supérieure à 1 et d'au moins un polymère contenant furane et substitué par 2,5-dialkyle; (b) au moins une charge égale à 25 à 75 % en poids sur la base de la quantité des constituants (a) et (b). Ce procédé permet d'obtenir un boîtier électronique pouvant être remanié sans difficultés.

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