Fairchild Semiconductor Corporation

Consuelo N Tangpuz

Rajeev Dinkar Joshi

Romel Nogas Manatad

Erwin Victor R Cruz

Jonathan A Noquil

Margie T Rios

Steven Paul Sapp

Izak Bencuya

Elsie Agdon Cabahug

Maria Christina B Estacio

Gilmore S Baje

Rey D Maligro

Maria C Y Quinones

A method for forming a stud bumped semiconductor die is disclosed. The method includes forming a ball at the tip of a coated wire passing through a hole in a capillary, where the coated wire has a core and an oxidation-resistant coating. The formed ball is pressed to the conductive region on the semiconductor die. The coated wire is cut, thereby leaving a conductive stud bump on the conductive region, where the conductive stud bump includes an inner conductive portion and an outer oxidation-resistant layer.

Dual metal stud bumping for flip chip applications

An integrated transistor module includes a lead frame that defines at least one low-side land and at least one high-side land. A stepped portion of the lead frame mechanically and electrically interconnects the low-side and high-side lands. A low-side transistor is mounted upon the low-side land with its drain electrically connected to the low-side land. A high-side transistor is mounted upon the high-side land with its source electrically connected to the high-side land.

Integrated transistor module and method of fabricating same

A semiconductor die package is disclosed. In one embodiment, the semiconductor die package has a substrate. It includes (i) a leadframe structure including a die attach region with a die attach surface and a lead having a lead surface, and (ii) a molding material. The die attach surface and the lead surface are exposed through the molding material. A semiconductor die is on the die attach region, and the semiconductor die is electrically coupled to the lead. The die attach surface and the lead surface can be in different planes.

Substrate based unmolded package

A chip device that includes a leadframe, a die and a mold compound. The backside of the die is metallized and exposed through a window defined within a mold compound that encapsulates the die when it is coupled to the leadframe. Leads on the leadframe are coupled to source and gate terminals on the die while the metallized backside of the die serves as the drain terminals.

Flip chip in leaded molded package and method of manufacture thereof

A semiconductor device including a leadframe and a die coupled thereto. A drain pad is coupled to the drain region of the die in a body that substantially envelopes the leadframe and the die. The body includes a window defined therein. The body is placed around the leadframe and the die such that a surface of the drain pad opposite the die is exposed through the window.

Semiconductor device including molded wireless exposed drain packaging

A packaging assembly for semiconductor devices and a method for making such packaging is described. The invention provides a non-Pb bump design during a new flip-chip method of packaging. The design uses special conductive materials in a stud form, rather than a solder ball containing Pb. This configuration maintains a desirable solder thickness between the die and the leadframe and forms a high standoff by restricting solder wettabilty on the leadframe side. This configuration also absorbs any stress and protects the die from cracking. The invention also provides methods for making such semiconductor packages.

Method for maintaining solder thickness in flipchip attach packaging processes

A method for forming a semiconductor die package is disclosed. In one embodiment, the method includes forming a semiconductor die comprising a semiconductor device. A plurality of copper bumps is formed on the semiconductor die using a plating process. An adhesion layer is formed on each of the copper bumps, and a noble metal layer is formed on each of the copper bumps.

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Lapu-Lapu, Philippines

Consuelo N Tangpuz