Amp LLC

Burroughs, Inc.

Daniel Marshall Andrews

John P Redmond

Ray N Shaak

Charles Roscoe Brummett

William S Scheingold

Joseph F Merlina

George Ulbrich

Karl Edward Guyler

Ronald J Ritchie

Disclosed is an IC package for connecting one set of nodes on an IC chip to another corresponding set of nodes on a circuit board. Each interconnection is made with a single C-shaped lead which is bonded at one end to a node on the chip. These leads extend outward from the periphery of the chip's surface, then perpendicular to and away from the chip's surface, and then inwards towards each other. A heat sink attaches to the back of the chip. The chip, an adjacent portion of the heat sink, and the outward extending portion of the leads are then encapsulated with a solid mass to hold them rigidly in place.

IC Package with heat sink and minimal cross-sectional area

An improved chip carrier of thin dieletric deformed into a dish configuration provided with flexible mounting flanges on which are plated or bonded solderable conductive traces and paths together with plated or bonded heat sinks which may be referenced to ground potential, and which provides structural integrity.

Chip carrier

A method for electroless gold plating in which gold ligand complexes are used; a photolytic method for depositing catalytic amounts of gold on a substrate suitable for an electroless metal deposition method whereby the gold complexes used are trivalent gold complex; a method for immersion plating or vaporization plating of gold from complexes, and complexes for the above methods.

Gold deposition procedures and substrates upon which gold has been

A method for the metallization of a nonconductive surface with gold, nickel or copper whereby on a nonconductive, relatively low temperature surface (such as a polyester or a polyolefin) a thermosensitive coordination complex of palladium (or platinum) is deposited from a solvent; the complex has the general formula LmPdXn wherein L is a ligand or unsaturated organic radical, X is a halide, alkyl group or a bidentate ligand and m is an integer from 1 to 4 and n is from 0 to 3; bis-benzonitrile palladium dichloride complex is an appropriate illustration; the palladium complex is applied in a thin film from a suitable nonaqueous solution solvent such as xylene, toluene or a chlorobenzene onto the surface of the nonconductive material and that thin film is thermally decomposed, such as by an infrared irradiation; the method in the preferred embodiment can be practiced without the necessity of surface etching or similar chemical conditioning of the polyester, polyamide, polyvinyl chloride, or polyolefin substrate prior to the catalytic coating; circuit element intermediates of said substrates are also disclosed.

Catalysts for electroless deposition of metals on comparatively

A solvent method for the metallization of a non-conductive surface with gold, nickel or copper is shown whereby on a substrate a thermosensitive coordination complex of palladium is deposited; the complex has the formula LmPdXn wherein L is a ligand or unsaturated organic radical, X is a halide, alkyl group or a bidentate ligand and m is an integer from 1 to 4 and n is from 0 to 3; trimethyl phosphite palladium dichloride complex is an appropriate illustration of the complex; the palladium complex is applied on the substrate in a suitable non-aqueous solution such as tetrahydrofuran solution; the complex is then baked in air at elevated temperature; the exposure to high temperature decomposes the complex leaving a residue which is catalytic to the deposition of gold, nickel, cobalt or copper from an electroless bath thereof; the non-conductive material is then immersed in an electroless bath to metallize the areas which have been rendered catalytic; the preferred thermosensitive coordination complex of palladium is trimethyl phosphite palladium dichloride; a requirement for a proper thermal exposure of the complex is that the substrate is capable of withstanding the elevated temperatures such as above 210.degree.C; illustrative organic substrates are polyimides, polysulfones, silicones, vulcanizates, fluoroplastics, polyphenylene sulfides, polyparabanic acids, and polyhydantoin, etc.

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Harrisburg, PA, United States of America

Daniel Marshall Andrews