Dynamic isolating mount for processor packages
View Patent ↗The present invention relates to a method and apparatus that prevents/minimizes cracking in the ceramic body of processors. The ability to prevent/minimize cracking can ensure successful operation and substantially increase processor lifetime. The present invention discloses a device for maintaining a microprocessor in a desired relationship with a printed wiring board while limiting the transmission of shock and vibrational motion to and from the processor includes a printed wiring board, a processor, and a dynamic isolating mount compressed between the printed wiring board and the processor, wherein the processor maintains the dynamic isolating mount in a compressed state such that the dynamic isolating mount bears on the printed wiring board.
1. A device for minimizing the vibrational motion in a microprocessor connected to a printed wiring board, the device comprising:
means for connecting the microprocessor to the printed wiring board that electrically connects the microprocessor to the printed wiring board, wherein said means for connecting transmits vibrational motion and allows relative motion between the microprocessor and the printed wiring board; and
means for damping vibrational motion transmitted between the microprocessor and the printed wiring board, wherein said means for connecting and said means for damping comprise a Kelvin system.
2. The device of claim 1 wherein said means for connecting has spring constant and said means for damping has a damping value.
3. The device of claim 1 wherein the device displays a viscoelastic response to applied loads.
4. The device of claim 1 further comprising a heat sink connected to the microprocessor and the printed wiring board by an assembly comprising at least one spring.
5. The device of claim 1 wherein said means; for damping vibrational motion comprises an isolating mount compressed between the microprocessor and the printed wiring board.
6. The device of claim 5 wherein the isolating mount comprises a continuous piece of material that contacts the periphery of the microprocessor.
7. The device of claim 5 wherein said isolating mount comprises a plurality of pieces of material that contact the microprocessor.
8. A device for minimizing the vibrational motion in a microprocessor connected to a printed wiring board, the device comprising:
means for connecting the microprocessor to the printed wiring board that electrically connects the microprocessor to the printed wiring board, wherein said means for connecting transmits vibrational motion and allows relative motion between the microprocessor and the printed wiring board; and
means for damping vibrational motion transmitted between the microprocessor and the printed wiring board, wherein said means for connecting and said means for damping comprise a Maxwell system.
9. The device of claim 8 wherein said means for connecting has a spring constant and said means for damping has a damping value.
10. The device of claim 8 wherein the device displays a viscoelastic response to applied loads.
11. The device of claim 8 further comprising a heat sink connected to the microprocessor and the printed wiring board by an assembly comprising at least one spring.
12. The device of claim 8 wherein said means for damping vibrational motion comprises an isolating mount compressed between the microprocessor and the printed wiring board.
13. The device of claim 12 wherein the isolating mount comprises a continuous piece of material that contacts the periphery of the microprocessor.
14. The device of claim 12 wherein said isolating mount comprises a plurality of pieces of material that contact the microprocessor.