Integrated shield wrap

• US 6,674,652 B2
• Filed: 01/29/2002
• Issued: 01/06/2004
• Est. Priority Date: 01/29/2002
• Status: Expired due to Term

• Current Assignee: Valtrus Innovations Limited (f/k/a Dolya Holdco 9 Limited) (Key Patent Innovations Limited)
• Original Assignee: 3Com Corporation (HP Inc.)
• Inventors: Oliphant, David, Forte, Steven Lo
• Primary Examiner(s): Martin, David
• Assistant Examiner(s): Levi, Dameon E.
• Application Number:
  US10/060,429
• Publication Number:
  US 20030142482A1
• Time in Patent Office: 707 Days
• Field of Search: 361/737, 361/800, 361/816, 361/818, 174/35.R, 174/35.GC, 174/35.MS, 174/32, 439/607-610
• US Class Current: 361/800
• CPC Class Codes: H05K 5/0269 Card housings therefor, e.g. covers, frames, PCB
• CPC Class Codes: H05K 9/0024 Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
• CPC Class Codes: H05K 9/0084 comprising a single continuous metallic layer on an electrically insulating supporting structure, e.g. metal foil, film, plating coating, electro-deposition, vapour-deposition

Abstract

An integrated shield wrap suitable for use in an electronic device including electronic circuitry. The integrated shield wrap includes an insulator section composed of an electrically insulative material, as well as a shield section joined to the insulator section and composed of an electrically conductive material. The integrated shield wrap can be configured as necessary to suit a particular application and, in general, serves to electrically insulate the electronic circuitry from other circuitry and components within the electronic device while simultaneously implementing a shielding functionality that permits management of electromagnetic emissions from some or all of the electronic circuitry.

Claims

1. An integrated shield wrap suitable for use in an electronic device including electronic circuitry, the integrated shield wrap comprising:

(a) an insulator section substantially comprising an electrically insulative material, said insulator section having first and second opposing sides; and

(b) a shield section attached to either said first or second side of said insulator section and substantially comprising an electrically conductive material, the shield section being less than coextensive with said insulator section so that some portions of the integrated shield wrap comprise a double layer configuration while other portions of the integrated shield wrap comprise only a single layer configuration, and said shield section and insulator section being arranged so that when the integrated shield wrap is operably disposed with respect to the electronic circuitry, said shield section is interposed between the electronic circuitry and said insulator section.

2. The integrated shield wrap as recited in claim 1, wherein said shield section comprises an adhesive.

3. The integrated shield wrap as recited in claim 1, further comprising at least one attachment member joined to at least one of said shield section and said insulator section.

4. The integrated shield wrap as recited in claim 1, further comprising a means for modifying a shield wrap geometry.

5. The integrated shield wrap as recited in claim 4, wherein said means for modifying a shield wrap geometry comprises at least one of:

a fold line defined by either said insulator section or said shield section, and a detachable segment connected to either said insulator section or said shield section.

6. The integrated shield wrap as recited in claim 1, wherein at least one of said insulator section and said shield section defines at least one cutout.

29. The integrated shield wrap as recited in claim 1, wherein at least a portion of the integrated shield wrap comprises a flexible material.

30. The integrated shield wrap as recited in claim 1, wherein the shield section substantially comprises an electrically conductive adhesive selected from the group consisting of:

isotropic adhesives; and

, anisotropic adhesives.

31. The integrated shield wrap as recited in claim 1, wherein the shield section substantially comprises a metallic film.

32. The integrated shield wrap as recited in claim 1, wherein the insulator section substantially comprises a material selected from the group consisting of:

ceramics;

epoxy-fiberglass laminates;

glasses;

plastics;

polyesters;

transformer paper; and

, fishpaper.

33. The integrated shield wrap as recited in claim 1, wherein the insulator section defines a plurality of portions, the shield section being attached to only one of the plurality of insulator portions.

7. An electronic device, comprising:

(a) a printed circuit board including electronic circuitry; and

(b) an integrated shield wrap disposed proximate said electronic circuitry and comprising;

(i) an insulator section substantially comprising an electrically insulative material, said insulator section having first and second opposing sides; and

(ii) a shield section joined to either said first or second side of said insulator section and substantially comprising an electrically conductive material, the shield section being less than coextensive with the insulator section so that some portions of the integrated shield wrap comprise a double layer configuration while other portions of the integrated shield wrap comprise only a single layer configuration, said shield section and said insulator section being arranged so that said shield section is interposed between said insulator section and said electronic circuitry.

8. The electronic device as recited in claim 7, wherein said integrated shield wrap is at least indirectly attached to said printed circuit board.

9. The electronic device as recited in claim 7, wherein said integrated shield wrap is removably attached to said printed circuit board.

10. The electronic device as recited in claim 7, wherein said electronic circuitry comprises radio frequency circuitry.

11. The electronic device as recited in claim 7, wherein said printed circuit board and said electronic circuitry generally conform to the mini-PCI standard.

12. The electronic device as recited in claim 7, further comprising a conductive fence disposed proximate to said electronic circuitry and in electrical communication with said shield section.

13. The electronic device as recited in claim 7, wherein said shield section comprises a metallic film.

14. The electronic device as recited in claim 7, wherein said shield section comprises an adhesive.

15. The electronic device as recited in claim 7, wherein said integrated shield wrap defines at least one cutout.

34. The electronic device as recited in claim 7, wherein the integrated shield wrap is configured and arranged so that a first portion of the electronic circuitry resides within the integrated shield wrap, while a second portion of the electronic circuitry lies outside the integrated shield wrap.

35. The electronic device as recited in claim 7, wherein at least a portion of the integrated shield wrap comprises a flexible material.

16. An insulating and shielding system suitable for use in conjunction with an electronic device having a printed circuit board that includes electronic circuitry, the insulating and shielding system comprising:

(a) a conductive fence configured to be attached to the printed circuit board; and

(b) an integrated shield wrap discrete from said conductive fence and including;

(i) an insulator section substantially comprising an electrically insulative material;

(ii) a shield section joined to said insulator section and substantially comprising an electrically conductive material, said shield section being less than coextensive with the insulator section so that some portions of the integrated shield wrap comprise a double layer configuration while other portions of the integrated shield wrap comprise only a single layer configuration; and

(iii) means for modifying a shield wrap geometry.

17. The insulating and shielding system as recited in claim 16, wherein said means for modifying a shield wrap geometry comprises at least one of:

a fold line defined by either said insulator section or said shield section, and a detachable segment connected to either said insulator section or said shield section.

18. The insulating and shielding system as recited in claim 16, wherein said shield section comprises a metallic film.

19. The insulating and shielding system as recited in claim 16, wherein said shield section comprises an adhesive.

20. The insulating and shielding system as recited in claim 16, wherein said integrated shield wrap defines at least one cutout.

36. The insulating and shielding system as recited in claim 16, wherein the insulator section defines a plurality of portions, the shield section being attached to only one of the plurality of insulator portions.

21. An expansion card, comprising:

(a) a printed circuit board including radio frequency circuitry; and

(b) an insulating and shielding system including;

(i) a conductive fence attached to said printed circuit board and disposed proximate said radio frequency circuitry; and

(ii) an integrated shield wrap discrete from said conductive fence and in contact therewith, said integrated shield wrap being disposed proximate to said radio frequency circuitry and including;

(1) an insulator section substantially comprising an electrically insulative material; and

(2) a shield section joined to said insulator section and substantially comprising an electrically conductive material, said shield section being less than coextensive with the insulator section so that some portions of the integrated shield wrap comprise a double layer configuration while other portions of the integrated shield wrap comprise only a single layer configuration.

22. The expansion card as recited in claim 21, wherein said printed circuit board and radio frequency circuitry generally conform to the mini-PCI standard.

23. The expansion card as recited in claim 21, wherein said shield section comprises a metallic film.

24. The expansion card as recited in claim 21, wherein said shield section comprises an adhesive.

25. The expansion card as recited in claim 21, wherein said integrated shield wrap defines at least one cutout.

37. The expansion card as recited in claim 21, wherein the insulator section defines a plurality of portions, the shield section being attached to only one of the plurality of insulator portions.

26. An integrated shield wrap suitable for use in an electronic device including electronic circuitry, the integrated shield wrap comprising:

an insulator section substantially comprising an electrically insulative material, said insulator section having first and second opposing sides;

a shield section attached to either said first side or second side of said insulator section and substantially comprising an electrically conductive material, said shield section being less than coextensive with said insulator section so that some portions of the integrated shield wrap comprise a double layer configuration while other portions of the integrated shield wrap comprise only a single layer configuration, and said shield section and insulator section being arranged so that when the integrated shield wrap is operably disposed with respect to the electronic circuitry, said shield section is interposed between the electronic circuitry and the insulator section; and

means for modifying a shield wrap geometry.

27. The integrated shield wrap as recited in claim 26, wherein said means for modifying a shield wrap geometry comprises a fold line defined by either said insulator section or said shield section.

28. The integrated shield wrap as recited in claim 26, further comprising a conductive fence disposed proximate to said electronic circuitry and in electrical communication with at least a portion of said integrated shield wrap.

38. The integrated shield wrap as recited in claim 26, wherein the insulator section defines a plurality of portions, the shield section being attached to only one of the plurality of insulator portions.