Electric Circuitry Arrangement

• US 20090284937A1
• Filed: 04/28/2009
• Published: 11/19/2009
• Est. Priority Date: 05/16/2008
• Status: Active Grant

• Current Assignee: Polar Electro Oy
• Original Assignee: Polar Electro Oy
• Inventors: Rytky, Pekka
• Granted Patent: US 8,125,793 B2
• Time in Patent Office: Days
• US Class Current: 361/749
• CPC Class Codes: H05K 1/144 Stacked arrangements of planar printed circuit boards
• CPC Class Codes: H05K 1/147 at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit H05K1/148 takes precedence
• CPC Class Codes: H05K 1/182 associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 2201/041 Stacked PCBs, i.e. having neither an empty space nor mounted components in between
• CPC Class Codes: H05K 2201/055 Folded back on itself
• CPC Class Codes: H05K 2201/056 Folded around rigid support or component
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 3/4691 Rigid-flexible multilayer circuits comprising rigid and flexible layers, e.g. having in the bending regions only flexible layers
• CPC Class Codes: Y10T 29/49126 Assembling bases

Abstract

An electric circuitry for a portable electronic device is presented. The electric circuitry includes a first printed circuit board comprising at least one electrical component attached to and extending from a surface of the first printed circuit board. The electric circuitry further comprises a second printed circuit board arranged to be coupled with the first printed circuit board and comprising at least one recess or hole arranged to receive the at least one electrical component extending from the surface of the first printed circuit board when the first circuit board and the second printed circuit board are coupled to each other.

Claims

1. An electric circuitry, comprising:

a first printed circuit board comprising at least one electrical component attached to and extending from a surface of the first printed circuit board; and

a second printed circuit board arranged to be coupled with the first printed circuit board in a layered structure and comprising at least one recess or hole arranged to receive the at least one electrical component extending from the surface of the first printed circuit board when the first circuit board and the second printed circuit board are coupled to each other to form the layered structure.

2. The electric circuitry of claim 1, wherein the second printed circuit board comprises at least one electrical component attached to and extending from a surface of the second printed circuit board and wherein the first printed circuit board comprises at least one recess arranged to receive the at least one electrical component extending from the surface of the second printed circuit board when the first circuit board and the second printed circuit board are coupled to each other.

3. The electric circuitry of claim 1, wherein the first printed circuit board is a flexible printed circuit board.

4. The electric circuitry of claim 1, wherein the first printed circuit board and the second printed circuit board are both flexible printed circuit boards.

5. The electric circuitry of claim 1, further comprising a third printed circuit board, wherein the first printed circuit board is arranged to be coupled between the second printed circuit board and the third printed circuit board.

6. The electric circuitry of claim 5, wherein the first printed circuit board comprises one or more electrical components attached to and extending from the surface on both faces of the first printed circuit board and wherein the third printed circuit board comprises at least one recess or hole arranged to receive the at least one electrical component extending from the surface of the first printed circuit board when the first circuit board and the third printed circuit board are coupled to each other.

7. The electric circuitry of claim 5, further comprising a bonding area in each printed circuit board, wherein each bonding area is arranged to contact a bonding area of another printed circuit board to provide an electrical connection between the printed circuit boards.

8. The electric circuitry of claim 7, wherein two bonding areas in contact with each other are bonded by an anisotropic conductive adhesive.

9. The electric circuitry of claim 7, further comprising a display element coupled to the first printed circuit board by a flexible conductor, wherein the display element is arranged to be disposed on top of the layered structure of printed circuit boards.

10. The electric circuitry of claim 1, wherein the second printed circuit board comprises a rigid layer and a flexible layer.

11. A method for manufacturing an electric circuitry, comprising:

providing a first printed circuit board comprising at least one electrical component attached to and extending from a surface of the first printed circuit board;

providing a second printed circuit board comprising at least one recess or hole; and

coupling the first printed circuit board to the second printed circuit board to form a layered structure such that the at least one recess or hole in the second printed circuit board receives the at least one electrical component extending from the surface of the first printed circuit board.

12. The method of claim 11, further comprising:

providing the second printed circuit board with at least one electrical component attached to and extending from a surface of the second printed circuit board;

providing the first printed circuit board with at least one recess or hole; and

coupling the first printed circuit board and the second printed circuit board to each other such that the at least one recess or hole in the first printed circuit board receives the at least one electrical component extending from the surface of the second printed circuit board.

13. The method of claim 11, further comprising:

providing a third printed circuit board; and

coupling the first printed circuit board between the second printed circuit board and the third printed circuit board.

14. The method of claim 13, further comprising:

providing the first printed circuit board with one or more electrical components attached to and extending from the surface on both faces of the first printed circuit board; and

providing the third printed circuit board with at least one recess arranged to receive the at least one electrical component extending from the surface of the first printed circuit board when the first circuit board and the third printed circuit board are coupled to each other.

15. The method of any one of claim 11, further comprising:

arranging a bonding area in each printed circuit board, wherein each bonding area is arranged to contact with a bonding area of another printed circuit board to provide an electrical connection between the printed circuit boards.

16. The method of claim 15, further comprising bonding two bonding areas in contact with each other by an anisotropic conductive adhesive.

17. The method of any one of claim 11, further comprising:

coupling a display element to the first printed circuit board by a flexible conductor, wherein the display element is arranged to be disposed on top of the layered structure of printed circuit boards.

18. A portable electronic device comprising

a first printed circuit board comprising at least one electrical component attached to and extending from a surface of the first printed circuit board;

and

a second printed circuit board arranged to be coupled with the first printed circuit board in a layered structure and comprising at least one recess or hole arranged to receive the at least one electrical component extending from the surface of the first printed circuit board when the first circuit board and the second printed circuit board are coupled to each other to form the layered structure.

19. The portable electronic device of claim 18, wherein the second printed circuit board comprises at least one electrical component attached to and extending from a surface of the second printed circuit board and wherein the first printed circuit board comprises at least one recess arranged to receive the at least one electrical component extending from the surface of the second printed circuit board when the first circuit board and the second printed circuit board are coupled to each other.

20. The portable electronic device of claim 18, wherein the first printed circuit board is a flexible printed circuit board.

21. The portable electronic device of claim 18, wherein the first printed circuit board and the second printed circuit board are both flexible printed circuit boards.

22. The portable electronic device of claim 18, further comprising a third printed circuit board, wherein the first printed circuit board is arranged to be coupled between the second printed circuit board and the third printed circuit board.

23. The portable electronic device of claim 22, wherein the first printed circuit board comprises one or more electrical components attached to and extending from the surface on both faces of the first printed circuit board and wherein the third printed circuit board comprises at least one recess or hole arranged to receive the at least one electrical component extending from the surface of the first printed circuit board when the first circuit board and the third printed circuit board are coupled to each other.

24. The portable electronic device of claim 22, further comprising a bonding area in each printed circuit board, wherein each bonding area is arranged to contact a bonding area of another printed circuit board to provide an electrical connection between the printed circuit boards.

25. The portable electronic device of claim 24, wherein two bonding areas in contact with each other are bonded by an anisotropic conductive adhesive.

26. The portable electronic device of claim 24, further comprising a display element coupled to the first printed circuit board by a flexible conductor, wherein the display element is arranged to be disposed on top of the layered structure of printed circuit boards.

27. The portable electronic device of claim 18, wherein the second printed circuit board comprises a rigid layer and a flexible layer.