Patent ID: 8105063
Filing Date: 2012-01-31
Classification: B29C,H01L

Abstract:
1. A molding system for use in packaging integrated circuits, comprising: a top cavity bar having a flat bottom surface wherein there is a top cavity bar recess in the flat bottom surface; a middle cavity bar that is positioned below the top cavity bar, wherein the top and middle cavity bars are arranged to sandwich an electronic substrate when the electronic substrate is positioned between the top and middle cavity bars, wherein the top and middle cavity bars are further arranged to help form one or more mold cavities over the electronic substrate; a tape that is positioned below the middle cavity bar and is arranged to cover and relieve pressure on a bottom of each mold cavity; a bottom cavity bar that is positioned below and arranged to support the tape; an injection unit that is arranged to be coupled with the mold cavities, wherein the injection unit is further arranged to inject a molding material into the mold cavities to encapsulate portions of the electronic substrate and wherein the molding system and injection unit are arranged to fill the entire top cavity bar recess with the molding material; and an electronic substrate populated with an integrated circuit die, the electronic substrate including a top surface and an opposing bottom surface wherein: the integrated circuit die on the electronic substrate includes an active surface and an opposing back surface; the active surface of the integrated circuit die is directly physically and electrically connected to the bottom surface of the electronic substrate with at least one solder joint; the top surface of the electronic substrate underlies the top cavity bar recess and is in contact with the flat bottom surface of the top cavity bar; the electronic substrate is in contact with and sandwiched between the top and middle cavity bars; and the back surface of the integrated circuit die is pressed flush against the tape.