Process of making interposers for land grip arrays
First Claim
1. A process for forming an interposer, comprising:
- forming a laminate comprising a first sheet of electrically insulating material having a top surface and plurality of first apertures therethrough and a second sheet of electrically conductive material laminated to a bottom surface of the first sheet, the first apertures being closed by the second sheet;
removing material of the second sheet around at least some of the first apertures to form conductive pads that closes the at least some of the first apertures so that the conductive pads are in electrical communication with respective first apertures;
attaching a third sheet of electrically insulating material to a side of the second sheet opposite the first sheet; and
displacing material from the third sheet to form a plurality of second apertures in the third sheet and the material displaced from the third sheet fills voids in the second sheet left by removal of material of the second sheet to form the pads, the second apertures are closed by the conductive pads so that each conductive pad is in electrical communication with a respective second aperture.
2 Assignments
0 Petitions
Accused Products
Abstract
An interposer is formed by forming a laminate comprising a first sheet of electrically insulating material and a second sheet of conductive material. The first sheet has a first plurality of apertures therethrough and the second sheet is laminated to the first sheet to close the first plurality of apertures. Material is removed from the second sheet around the first plurality of apertures to form conductive pads, the pads closing the first plurality of apertures. A third sheet of electrically insulating material is attached to the second sheet. The third sheet has a second plurality of apertures therethrough, the third sheet being positioned relative to the second sheet such that the apertures of the second plurality are closed by the conductive pads. In a preferred form, the third sheet is positioned relative to the first sheet so that the apertures of the second plurality are not in registration with the apertures of the first plurality.
68 Citations
15 Claims
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1. A process for forming an interposer, comprising:
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forming a laminate comprising a first sheet of electrically insulating material having a top surface and plurality of first apertures therethrough and a second sheet of electrically conductive material laminated to a bottom surface of the first sheet, the first apertures being closed by the second sheet; removing material of the second sheet around at least some of the first apertures to form conductive pads that closes the at least some of the first apertures so that the conductive pads are in electrical communication with respective first apertures; attaching a third sheet of electrically insulating material to a side of the second sheet opposite the first sheet; and displacing material from the third sheet to form a plurality of second apertures in the third sheet and the material displaced from the third sheet fills voids in the second sheet left by removal of material of the second sheet to form the pads, the second apertures are closed by the conductive pads so that each conductive pad is in electrical communication with a respective second aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification