PRINTED CIRCUIT BOARD ASSEMBLY

• US 20070002551A1
• Filed: 03/04/2006
• Published: 01/04/2007
• Est. Priority Date: 07/01/2005
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: GER, CHIH-CHAN (Clay)
• Application Number:
  US11/308,052
• Publication Number:
  US 20070002551A1
• Time in Patent Office: Days
• US Class Current: 361/803
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/73257 Bump and wire connectors
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H05K 1/0218 by printed shielding conductors, ground planes or power plane H05K1/0236 takes precedence
• CPC Class Codes: H05K 1/141 One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters H05K1/142 and H05K1/147 take precedence
• CPC Class Codes: H05K 2201/09772 Conductors directly under a component but not electrically connected to the component cooling of mounted components by printed thermal vias H05K1/0206
• CPC Class Codes: H05K 2201/09781 Dummy conductors, i.e. not used for normal transport of current; Dummy electrodes of components
• CPC Class Codes: H05K 2201/10287 Metal wires as connectors or conductors
• CPC Class Codes: H05K 2201/10659 Different types of terminals for the same component, e.g. solder balls combined with leads
• CPC Class Codes: H05K 3/3442 having edge contacts, e.g. leadless chip capacitors, chip carriers

Abstract

A printed circuit board (PCB) assembly includes a first PCB (100) and a second PCB (200), respectively including first conductor trace lines (102) and second conductor trace lines (108) for providing electronic connections among a plurality of electronic components. The first PCB is disposed above the second PCB, and is parallel with the second PCB. The first PCB is electronically connected to the second PCB via at least one of the first conductor trace lines and the second conductor trace lines. A surface area of the first PCB is smaller than that of the second PCB. The second PCB is used as a primary circuit board for a layout of electronic components. Preferably, complex or high voltage circuits are disposed on the first PCB, and other circuits are disposed on the second PCB.

Claims

1. A printed circuit board assembly, comprising:

a first printed circuit board comprising first conductor trace lines for providing electronic connections among a plurality of electronic components; and

a second printed circuit board comprising second conductor trace lines for providing electronic connections among a plurality of electronic components;

wherein the first printed circuit board is disposed above the second printed circuit board, and is parallel with and electronically connected to the second printed circuit board via at least one of the first conductor trace lines and at least one of the second conductor trace lines; and

a surface area of the first printed circuit board is smaller than that of the second printed circuit board.

2. The printed circuit board assembly as claimed in claim 1, wherein the first conductor trace lines are disposed on at least two surfaces of the first printed circuit board, and the second conductor trace lines are disposed on a surface of the second printed circuit board.

3. The printed circuit board assembly as claimed in claim 1, wherein the second printed circuit board is a single-sided board.

4. The printed circuit board assembly as claimed in claim 1, wherein the second printed circuit board is a double-sided board.

5. The printed circuit board assembly as claimed in claim 1, further comprising a solder wire, which connects at least one of the first conductor trace lines of the first printed circuit board and at least one of the second conductor trace lines of the second printed circuit board.

6. The printed circuit board assembly as claimed in claim 1, further comprising a solder portion, which connects at least one of the first conductor trace lines of the first printed circuit board and at least one of the second conductor trace lines of the second printed circuit board.

7. The printed circuit board assembly as claimed in claim 2, wherein the first printed circuit board further comprises a metal layer, which connects at least one of the first conductor trace lines on a first surface of the first printed circuit board and at least another of the first conductor trace lines on a second surface of the first printed circuit board.

8. The printed circuit board assembly as claimed in claim 7, wherein the metal layer is a metal film directly plated on the first printed circuit board.

9. The printed circuit board assembly as claimed in claim 7, wherein the metal layer is formed on an inner wall of a via of the first printed circuit board.

10. The printed circuit board assembly as claimed in claim 1, wherein the first printed circuit board further comprises a first connector electronically connected to at least one of the first conductor trace lines of the first printed circuit board, and the second printed circuit board further comprises a second connector electronically connected to at least one of the second conductor trace lines of the second printed circuit board, and the second connector is engaged with and electronically connected to the first connector.

11. The printed circuit board assembly as claimed in claim 10, wherein the connection of the first connector and the second connector is parallel with the surface of the first printed circuit board.

12. The printed circuit board assembly as claimed in claim 1, wherein the second printed circuit board further comprises an electromagnetic shield disposed thereon under the first printed circuit board.

13. The printed circuit board assembly as claimed in claim 12, wherein the electromagnetic shield comprises a copper foil.