Hybrid electrical contactor
View Patent ↗An electrical connection between an electrically conductive probe on one device and a compliant pad on another device can be formed by piercing the compliant pad with the probe. The probe can contact multiple electrically conductive elements inside the pad and thereby electrically connect to the pad at multiple locations inside the pad.
1. An electronic apparatus comprising:
a first electronic device comprising first circuitry;
a second electronic device comprising second circuitry;
compliant pads disposed on said second electronic device, each of said compliant pads comprising a non-electrically conductive compliant material and conductive elements suspended inside said compliant material and electrically connected directly to said second circuitry; and
electrically conductive probes extending from said first electronic device and piercing ones of said pads, each of said probes are electrically connected directly to said first circuitry and contact ones of said conductive elements suspended inside said pad pierced by said probe; and
electrical paths from said first circuitry to said second circuitry,
wherein each of said electrical paths comprises one of said probes and said ones of said conductive elements suspended inside said one of said pads pierced by said one of said probes.
2. The electronic apparatus of claim 1 , wherein said compliant material is substantially elastic.
3. The electronic apparatus of claim 1 , wherein said compliant material comprises a polymer material or a plastic material.
4. The electronic apparatus of claim 1 , wherein:
said conductive elements are electrically conductive fibers, and
each of said pads comprises a mesh or bundle of said fibers.
5. The electronic apparatus of claim 1 , wherein each of said probes comprises a spike that pierces one of said pads.
6. The electronic apparatus of claim 5 , wherein each of said probes comprises a plurality of spikes that pierce one of said pads.
7. The electronic apparatus of claim 1 , wherein each of said probes comprises one or more blades that pierce one of said pads.
8. The electronic apparatus of claim 1 , wherein each of said probes comprises a ball that pierces one of said pads.
9. The electronic apparatus of claim 1 , wherein:
one of said first electronic device or said second electronic device is a semiconductor device and said first circuitry comprises active circuitry integrated into said semiconductor device, and
the other of said first electronic device or said second electronic device is a socket for receiving said semiconductor device.
10. The electronic apparatus of claim 1 , wherein:
one of said first electronic device or said second electronic device is a semiconductor device and said first circuitry comprises active circuitry integrated into said semiconductor device, and
the other of said first electronic device or said second electronic device is a probe card assembly configured to make temporary electrical connections with said semiconductor device to test said semiconductor device.
11. The electronic apparatus of claim 10 , wherein:
said pads are disposed on said semiconductor device, and
said probes are part of said probe card assembly, and
said probes comprise piercing ends that pierce said pads.
12. The electronic apparatus of claim 1 , wherein said conductive elements are dispersed throughout said compliant material.
13. The electronic apparatus of claim 1 , wherein said conductive elements are of sufficient density inside each of said pads to form electrical connections with said one of said probes that pierces said pad.
14. The electronic apparatus of claim 1 , wherein said conductive elements comprise particles, flakes, spheres, or fibers.
15. The electronic apparatus of claim 1 , wherein said non-conductive material of each of said pads is self-healing.
16. The electronic apparatus of claim 1 , wherein:
one of said pads extends a height H from said second device,
a force of less than one gram presses one of said probes a distance D into said one of said pads, and
D is at least one half of H.
17. The electronic apparatus of claim 16 , wherein D is at least three quarters of H.
18. The electronic apparatus of claim 1 , wherein:
each of said pads extends at least a height H from said second device, and
each of said probes extends less than said height H into a corresponding one of said pads.
19. The electronic apparatus of claim 1 , wherein:
one of said pads extends a height H from said second device, and
one of said probes pierces into said one of said pads a distance D equal to said height H.
20. The electronic apparatus of claim 1 , wherein:
each of said pads extends at least a height H from said second device, and
each of a plurality of said probes extends a different distance D into said pads.