Molded lead frame ball grid array

Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Metallic housing or support

Patent

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Details

438106, 438121, 438124, 438125, 438126, 438127, 438613, H01L 2144, H01L 2148, H01L 2150

Patent

active

060837764

ABSTRACT:
A ball grid array (BGA) package configuration for packaging an integrated-circuit die includes a lead frame having a plurality of inwardly-extending bonding fingers and a centrally-located die-attach pad. The bonding fingers are disposed peripherally surrounding the die-attach pad. An integrated-circuit die is mounted on the die-attach pad. Bonding fingers are interconnected between the bonding pads on the integrated-circuit die and the plurality of bonding fingers. A plastic material is molded over the top of the lead frame and the die while still providing an exposed bottom surface of the bonding fingers on the lead frame. A solder mask is disposed over the bottom of the lead frame so as to form selective solder areas. Solder balls are attached to the selective solder areas.

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patent: 5147084 (1992-09-01), Behun et al.
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patent: 5337219 (1994-08-01), Carr et al.
patent: 5341980 (1994-08-01), Nishikawa et al.
"High-Pincount PBGAs Implementation" by Bruce Freyman and Michael Petrucci, Advanced Packaging Magazine, May/Jun. 1995.
"High Performance Package" Product Announcement by Olin Interconnect Technologies, Manteca, California, pp. 146-152.
BGA Technology: Current and Future Direction For Plastic, Ceramic and Tape BGAs by David Walshak and Hassan Hashemi, MCC, Austin Texas, pp. 157-160.
"Ball Grid Array Packaging" by M.S. Cole and T. Caulfield, IBM Microelectronics, Hopewell Junction, NY, pp. 147-152.

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