Conductive gel area array connector

• US 5,037,312 A
• Filed: 11/15/1990
• Issued: 08/06/1991
• Est. Priority Date: 11/15/1990
• Status: Expired due to Term

• Current Assignee: AMP Limited
• Original Assignee: AMP Limited
• Inventors: Deak, Frederick R., Casciotti, Albert, Rowlette, John R.
• Primary Examiner(s): Bradley, Paula A.
• Application Number:
  US07/613,195
• Time in Patent Office: 264 Days
• Field of Search: 439/66, 439/86, 439/90, 439/91, 439/178, 439/179, 439/591
• US Class Current: 439/66
• CPC Class Codes: H01R 12/714 with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
• CPC Class Codes: H05K 3/325 by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor adaptations of leads inserted in holes for press-fit connections H05K3/308
• CPC Class Codes: H05K 7/1061 co-operating by abutting

Abstract

An electrical connector (30) includes a body (34) of elastomeric material having cavities (38) containing a conductive gel operable upon deformation of the body of said connector to interconnect conductive pads (16, 22) between components such as a printed circuit board (12) and a chip carrier (20).

Claims

1. An electrical connector adapted to electrically interconnect first and second circuit path surfaces including a connector body of dielectric material having elastomeric characteristics and containing a plurality of cavities extending therethrough, the body of said connector proximate said cavities having a geometry in conjunction with the elastomeric characteristics of the material to be readily deformable by pressure applied through said surfaces along a longitudinal axis of said cavity, a conductive gel positioned in the said cavity in a volume slightly less than the volume of said cavity when said connector body is in an undeformed condition whereby upon the application of said pressure and deformation of said body, the volume of said cavity is reduced to cause said gel to flow into area engagement with the said surfaces thereby interconnecting electrically said surfaces through said gel.

2. The connector of claim 1 wherein each said cavity includes an internal recess adapted to accommodate said gel and hold said gel within said cavity.

3. The connector of claim 1 wherein each said cavity includes an internal recess adapted to accommodate the flow of gel under pressure.

4. The connector of claim 1 wherein each said cavity includes a conductive material therewithin the said gel disposed on each side of said material whereby to reduce the path of resistance through said cavity.

5. The connector of claim 1 wherein said body includes a lip means surrounding each said cavity and operable to seal said gel within said cavity upon deformation of said body through application of said pressure from said first and second surfaces.

6. The connector of claim 1 wherein said body includes a thin deformable lip surrounding each said cavity at each end of said cavity to effectively seal said gel within said cavity upon deformation of said body through the application of pressure from said first and second surfaces.

7. The connector of claim 1 further includes means to compress said body by driving said surfaces relatively together.

8. The connector of claim 1 wherein the said first surface is a conductive pad on a printed circuit board and the said second surface is a conductive element on a component connected through said connector to said printed circuit board.

9. The connector of claim 1 wherein the said body includes a plurality of cavities arranged in an array compatible with the array of conductive pads in an integrated circuit device.

10. An electrical connector adapted to interconnect the conductive paths of an electronic component to a printed circuit board including a body containing a plurality of cavities arranged in an array compatible with the conductive paths of said component and printed circuit board with said body being formed of a thin elastomeric material which is readily deformable and with each said cavity being surrounding by a lip of material adapted to be deformed and to seal said cavity upon deformation between said component and said board, a conductive gel substantially filling each said cavity whereby upon deformation of said body and said lip the said gel is caused to flow into engagement with the contact paths of the said component and the said board to provide and interconnection therebetween.

11. The connector of claim 10 whereby the said interior surfaces of the said cavities are provided with characteristics having a wetability to said gel greater than the wetability of the pads of said component and board whereby to preclude sticking of said gel to the said pads and retain said gel within said cavities.

12. The connector of claim 10 wherein said cavities are deformable to accommodate compression of said gel during deformation of said body.

13. The connector of claim 10 further including a centrally located region for receiving a thermally conductive medium.