Patent ID: 6653173
Filing Date: 2003-11-25
Classification: H01L

Abstract:
A method of encapsulating a microelectronic device having a microelectronic die and a substrate with a first surface and a second surface, the die being attached to one of the first or second surfaces of the substrate, comprising:positioning the microelectronic die in a cavity of a mold having a first end and a second end; sealing the substrate to the mold; injecting an encapsulation compound through the first end of the mold and into the cavity along the first surface of the substrate to generate a first flow of compound along the first surface moving in a first direction from a first end of the substrate toward a second end of the substrate; driving a portion of the compound through the substrate at a pass-through location spaced apart from the first end of the substrate to generate a second flow of compound along the second surface of the substrate moving in a second direction toward the first end of the substrate; and inhibiting a third flow of compound from moving in the first direction along the second surface of the substrate between the first end of the substrate and the pass-through location.