Patent ID: 6769893
Filing Date: 2004-08-03
Classification: B29C,B29L,H01L,Y10S

Abstract:
Apparatus for vacuum encapsulation of a semiconductor chip package, comprising:a dispense chamber having an inlet end, an outlet end and a material dispenser mounted therein op able to dispense encapsulant material about peripheral edges of a semiconductor chip package under at least partial vacuum of the dispense chamber during a dispense cycle; an inlet chamber mounted adjacent the inlet end of said dispense chamber and isolatable therefrom in, said inlet chamber including a transport mechanism operable to transfer a semiconductor chip package to the dispense chamber under at least partial vacuum of said inlet chamber and said dispense chamber; an outlet chamber mounted adjacent the outlet end of said dispense chamber and isolatable therefrom, said outlet chamber including a transport mechanism operable to receive semiconductor chip package onto which encapsulant material has been dispensed from said dispense chamber under at least partial vacuum of said outlet chamber and said dispense chamber; and a vent connected t said outlet chamber for venting said outlet chamber to atmosphere, wherein said vent comprises an adjustable vent valve operable to control a vent rate of said outlet chamber to atmosphere, whereby upon venting said outlet chamber to atmosphere, the dispensed encapsulant material is forced into the semiconductor chip package to form an encapsulation layer therein.