Semiconductor packages with centrally located electrode pads

Details Semiconductor packages with centrally located electrode pads Semiconductor packages with centrally located electrode pads

1992-04-22

1994-08-02

Mintel, William

Active solid-state devices (e.g., transistors, solid-state diode

Lead frame

257673, 257738, 257787, H01L 2302

Patent

active

053348737

ABSTRACT:
A semiconductor package and a method for manufacturing such a package in which a desired thickness of the package is accomplished. The package includes a semiconductor chip provided with a plurality of solders which are formed on pads of the chip, respectively, and a plurality of inner leads of a lead frame which are electrically connected to the solders by soldering. The method comprises the steps of coating polyimide layers on a surface of semiconductor chip, forming solders on pads of the chip, soldering inner leads of a lead frame to the solders in order to electrically connect the chip to the inner leads, molding an encapsulation epoxy resin coating in order to cover a predetermined area including the semiconductor chip and the inner leads, and trimming and forming the package having been processed in above steps. The package of this invention provides advantage in that the inner leads are connected to the solders of the chip, thereby accomplishing a desired thickness of the package, reducing manufacturing cost and simplifying the manufacturing process of the package due to removing wires.

REFERENCES:
patent: 3947867 (1976-03-01), Duffek et al.
patent: 4604644 (1986-08-01), Beckham et al.
patent: 4796078 (1989-01-01), Phelps, Jr. et al.
patent: 5109265 (1992-04-01), Utesch et al.
patent: 5155578 (1992-10-01), Lim et al.

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