초록 ▼

A pinning process including the steps of gold-plating through-holes in a laminate carrier and crimping old or gold-plated pin located in the through-holes to form a pin head on the top and a pin bulge on the bottom of the laminate carrier to produce a plastic pin grid array. A variety of mechanical

A pinning process including the steps of gold-plating through-holes in a laminate carrier and crimping old or gold-plated pin located in the through-holes to form a pin head on the top and a pin bulge on the bottom of the laminate carrier to produce a plastic pin grid array. A variety of mechanical forming processes may be employed to form the pin heads and pin bulges and cause the pin to at least partially, and preferably substantially, fill and contact the gold-plated through-hole including swage pinning, impact pinning, and double-die pinning operations. By combining the steps of gold-plating through-holes of a laminate carrier and using a mechanical pinning process to crimp a gold or gold-plated pin in the through-holes, a reliable mechanical and electrical connection may be established between the pin and the metal lines both inside and on the surface of the laminate carrier without the need for lead-containing solders and pastes.

대표청구항 ▼

1. A method for making a plastic pin grid array comprising a circuitized laminate carrier having a top surface and a bottom surface, a centrally disposed dielectric material, and at least one transverse through-hole which defines an inner-surface with a corresponding at least one solid pin inserted

1. A method for making a plastic pin grid array comprising a circuitized laminate carrier having a top surface and a bottom surface, a centrally disposed dielectric material, and at least one transverse through-hole which defines an inner-surface with a corresponding at least one solid pin inserted therein and having a gold surface, the process including the steps of:disposing a layer of gold on said inner surface of said at least one through-hole in said circuitized laminate carrier, inserting at least one solid pin blank having a gold surface into said at least one through-hole, deforming said at least one solid pin blank to form at least one pin with a gold surface which directly contacts substantially throughout said inner surface said layer of gold disposed on said inner surface of said at least one through-hole, said laminate carrier further including at least one conductor of a metal plane disposed in said dielectric material, wherein said at least one conductor is electrically connected to said gold on said inner surface of said at least one through-hole.