Electrical apparatuses, and methods of forming electrical apparatuses

• US 6,392,545 B2
• Filed: 12/07/2000
• Issued: 05/21/2002
• Est. Priority Date: 08/27/1999
• Status: Expired due to Term

• Current Assignee: Round Rock Research LLC
• Original Assignee: Micron Technology, Inc.
• Inventors: Tuttle, Mark E., Lake, Rickie C.
• Primary Examiner(s): Tweel, John
• Application Number:
  US09/733,275
• Publication Number:
  US 20010000299A1
• Time in Patent Office: 530 Days
• Field of Search: 340/572.8, 340/10.1, 340/573.1, 340/573.4, 340/870.16, 342/51, 342/50, 431/321, 361/772, 361/784, 361/792, 361/761, 361/749, 361/600, 428/901, 174/36, 174/34, 174/27, 174/254, 174/259, 174/52.4, 174/52.3, 298/25, 297/40, 297/60
• US Class Current: 340/572.8
• CPC Class Codes: A01M 1/026 combined with devices for monitoring insect presence, e.g. termites bait stations A01M1/2005; detecting other animals in a given area A01M31/002
• CPC Class Codes: A01M 2200/011 Crawling insects
• CPC Class Codes: Y10S 428/901 Printed circuit
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

The invention encompasses an electrical apparatus. Such apparatus comprises a first substrate having first circuitry thereon. The first circuitry has a terminal extending therefrom, and the terminal defines a first electrical node. The apparatus further comprises a first dielectric material covering a predominate portion of the first circuitry and not covering the first electrical node. Additionally, the apparatus comprises a second substrate having second circuitry thereon. The second circuitry has a terminal extending therefrom, and such terminal defines a second electrical node. A second dielectric material covers a predominate portion of the second circuitry, but does not cover the second electrical node. The second substrate comprises a different material than the first substrate. A portion of the second substrate is over a portion of the first substrate to define an overlap between the first and second substrates. The second electrical node overlaps the first electrical node in the overlap between the first and second substrates. A conductive material is within the overlap between the first and second substrates and electrically bonds the first and second electrical nodes to one another. The invention also encompasses termite sensing devices, methods of forming electrical apparatuses, and methods of sensing termites.

Claims

1. An electrical apparatus comprising:

a first substrate having first circuitry thereon, the first circuitry having a terminal extending therefrom, said terminal of the first circuitry defining a first electrical node;

a second substrate having second circuitry thereon, the second circuitry having a terminal extending therefrom, said terminal of the second circuitry defining a second electrical node, the second substrate comprising a different material than the first substrate, a portion of the second substrate being over a portion of the first substrate to define an overlap between the first and second substrates, the second substrate being more flexible than the first substrate; and

a conductive material being within the overlap between the first and second substrates and electrically bonding the first and second electrical nodes to one another.

2. The apparatus of claim 1 wherein the first substrate is foam and the second substrate is polyester.

3. The apparatus of claim 1 further comprising third circuitry joined to the second substrate, the third circuitry comprising a radio frequency identification device transponder and being electrically connected to the first circuitry through the second circuitry.

4. The apparatus of claim 1 wherein the first substrate is foam and the second substrate is polyester, and further comprising third circuitry joined to the second substrate, the third circuitry comprising a radio frequency identification device transponder and being electrically connected to the first circuitry through the second circuitry.

5. An electrical apparatus comprising:

a first substrate having first circuitry thereon, the first circuitry having a terminal extending therefrom, said terminal of the first circuitry defining a first electrical node;

a first dielectric material covering a predominate portion of the first circuitry and not covering the first electrical node;

a second substrate having second circuitry thereon, the second circuitry having a terminal extending therefrom, said terminal of the second circuitry defining a second electrical node, the second substrate comprising a different material than the first substrate, a portion of the second substrate being over a portion of the first substrate to define an overlap between the first and second substrates;

a second dielectric material covering a predominate portion of the second circuitry and not covering the second electrical node, the second electrical node overlapping the first electrical node in the overlap between the first and second substrates; and

a conductive material being within the overlap between the first and second substrates and electrically bonding the first and second electrical nodes to one another.

6. The apparatus of claim 5 wherein:

the first circuitry comprises a conductive loop;

the second circuitry comprises a pair of spaced conductive lines;

the conductive loop comprises a pair of ends, one of the ends being the first terminal and an other of the ends being a third terminal;

one of the pair lines comprises an end that is the second terminal;

an other of the pair of lines comprises an end that is a fourth terminal; and

the third terminal overlaps the fourth terminal in the overlap between the first and second substrates and is bonded to the fourth terminal by the conductive material.

7. The apparatus of claim 5 wherein the conductive material comprises a conductive adhesive.

8. The apparatus of claim 5 wherein the conductive material comprises a Z-axis adhesive.

9. The apparatus of claim 5 wherein the first and second dielectric materials are the same as one another.

10. The apparatus of claim 5 wherein the first and second dielectric materials extend into the overlap between the first and second substrates, and wherein the conductive material overlaps the first and second dielectric materials.

11. The apparatus of claim 5 wherein the first substrate is more rigid than the second substrate.

12. The apparatus of claim 11 wherein the first substrate comprises foam and the second substrate comprises plastic.

13. The apparatus of claim 11 wherein the first substrate comprises foam and the second substrate comprises polyester.

14. A method of forming an electrical apparatus, comprising:

providing a first substrate having first circuitry thereon;

forming a first dielectric material over a predominant portion of the first circuitry, the first dielectric material not covering a portion of the first circuitry;

providing a second substrate having second circuitry thereon, the second substrate comprising a different material than the first substrate;

forming a second dielectric material over a predominant portion of the second circuitry, the second dielectric material not covering a portion of the second circuitry;

placing the first and second substrates relative to one another with a portion of the second substrate being over a portion of the first substrate to define an overlap between the first and second substrates, the uncovered portion of the second circuitry overlapping the uncovered portion of the first circuitry in the overlap between the first and second substrates; and

providing a conductive material within the overlap between the first and second substrates to electrically bond the uncovered portions of the first and second circuitries to one another.

15. The method of claim 14 wherein the conductive material comprises a conductive adhesive.

16. The method of claim 14 wherein the conductive material comprises a Z-axis adhesive.

17. The method of claim 14 wherein the first and second dielectric materials are the same as one another.

18. The method of claim 14 wherein the first and second dielectric materials extend into the overlap between the first and second substrates, and wherein the conductive material overlaps the first and second dielectric materials.

19. The method of claim 14 wherein the first substrate is more rigid than the second substrate.

20. The method of claim 19 wherein the first substrate comprises foam and the second substrate comprises plastic.

21. The method of claim 19 wherein the first substrate comprises foam and the second substrate comprises polyester.

22. A method of forming an electrical apparatus, comprising:

providing a first substrate;

printing first circuitry on the first substrate, the first circuitry having a terminal extending therefrom, said terminal of the first circuitry defining a first electrical node;

forming a first dielectric material over a predominate portion of the first circuitry, the first dielectric material not covering the first electrical node;

providing a second substrate;

forming second circuitry on the second substrate, the second circuitry having a terminal extending therefrom, said terminal of the second circuitry defining a second electrical node, the second substrate comprising a different material than the first substrate;

forming a second dielectric material over a predominate portion of the second circuitry, the second dielectric material not being over the second electrical node;

placing the first and second substrates relative to one another with a portion of the second substrate being over a portion of the first substrate to define an overlap between the first and second substrates, the second electrical node overlapping the first electrical node in the overlap between the first and second substrates; and

providing a conductive material within the overlap between the first and second substrates to electrically bond the first and second electrical nodes to one another.

23. The method of claim 22 wherein:

the first circuitry comprises a conductive loop and is formed by printing a conductive ink on the first substrate;

the second circuitry comprises a pair of spaced conductive lines and is formed by printing a conductive ink on the second substrate;

the conductive loop comprises a pair of ends, one of the ends being the first terminal and an other of the ends being a third terminal;

one of the pair lines comprises an end that is the second terminal;

an other of the pair of lines comprises an end that is a fourth terminal; and

the third terminal overlaps the fourth terminal in the overlap between the first and second substrates and is bonded to the fourth terminal by the conductive material.

24. The method of claim 22 wherein the conductive material comprises a conductive adhesive.

25. The method of claim 22 wherein the conductive material comprises a Z-axis adhesive.

26. The method of claim 22 wherein the first and second dielectric materials are the same as one another and are printed on the first and second substrates, respectively.

27. The method of claim 22 wherein the first and second dielectric materials extend into the overlap between the first and second substrates, and wherein the conductive material overlaps the first and second dielectric materials.

28. The method of claim 22 wherein the first substrate is more rigid than the second substrate.

29. The method of claim 28 wherein the first substrate comprises foam and the second substrate comprises plastic.

30. The method of claim 28 wherein the first substrate comprises foam and the second substrate comprises polyester.