Patent ID: 8163220
Filing Date: 2012-04-24
Classification: H01L,Y10S

Abstract:
1. A method of packaging integrated circuits comprising: clamping an upper mold portion and a lower mold portion around an integrated circuit die mounted on an upper surface of a packaging substrate, the upper and lower mold portions contacting upper and lower surfaces of the packaging substrate, respectively, during clamping; and bringing a surface on a projection within the upper mold portion into contact with an active area of the integrated circuit die during mold clamping, wherein the contacted active area remains exposed after encapsulation, wherein a deformable material is disposed on a surface of the lower mold portion, the deformable material having a soft deformable upper surface that contacts the bottom surface of the packaging substrate during mold clamping, the deformable material deforming during mold clamping as necessary to compensate for misalignment between the projection surface and the active area of the integrated circuit die and to thereby prevent injected encapsulating material from flowing between the projection surface and the contact area.