Patent ID: 6737002
Filing Date: 2004-05-18
Classification: B29C

Abstract:
A method for molding multichip modules allowing backside contact, said method comprising the steps of:procuring a tensioned dielectric film populated with components having electrical contacts adjacent said film and also having at least one of a backside thermal contact and a backside electrical contact; defining a module region by dispensing a high-viscosity liquid dam material around those components included within a single module; filling at least a portion of the dammed region with liquid encapsulant material by use of an programmed automatic dispensing apparatus which relatively moves a dispenser tip along a preprogrammed path within the module region; and controlling said programmed automatic dispensing apparatus to define a dispensing path which dispenses said encapsulant material from above the surface of said dielectric film, and which (a) dispenses said liquid encapsulant material in a predefined overall pattern, so that, in the absence of components requiring backside contacts, the entirety of said dammed region is filled with encapsulant, (b) stops the dispensing in those regions occupied by those of said components for which backside contact is desired.