Modules for increasing useable space on circuit boards

• US 9,549,464 B2
• Filed: 08/30/2013
• Issued: 01/17/2017
• Est. Priority Date: 08/30/2013
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Malek, Shayan, Ardisana, John B. II, Shah, Dhaval N.
• Primary Examiner(s): Patel, Ishwarbhai B
• Application Number:
  US14/015,938
• Publication Number:
  US 20150060126A1
• Time in Patent Office: 1,236 Days
• Field of Search: 174250-268, 361/728, 361/736, 361/752, 361/760, 361792-795
• US Class Current: 1/1
• CPC Class Codes: H05K 1/0284 Details of three-dimensional rigid printed circuit boards H05K1/119 takes precedence; shaping of the substrate H05K3/0014
• CPC Class Codes: H05K 1/115 Via connections; Lands around holes or via connections H05K1/112 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 2201/09145 Edge details
• CPC Class Codes: H05K 2201/10598 Means for fastening a component, a casing or a heat sink whereby a pressure is exerted on the component towards the PCB
• CPC Class Codes: H05K 2203/061 of previously made multilayered subassemblies
• CPC Class Codes: H05K 3/36 Assembling printed circuits with other printed circuits H05K7/142 takes precedence

Abstract

The described embodiments relate generally to electronic devices and to three dimensional modules for increasing useable space on a circuit board associated therewith. In some embodiments, the modules can have a cuboid geometry, and can include a number of surfaces having embedded circuit traces configured to interconnect electronic components arranged on various surfaces of the module. One of the surfaces of module can include at least one communication interface configured to interconnect the circuit traces on the module to associated circuit paths on a circuit board to which the module is coupled. In some embodiments the module can be operative as a standoff between the circuit board and another component of the electronic device.

Claims

1. A three dimensional module configured to mount electronic components to a circuit board, the module comprising:

a first printed circuit board (PCB) comprising circuit traces;

a second PCB comprising circuit traces and connected to the first PCB at a first angle;

a third PCB comprising circuit traces and connected to the first PCB at a second angle and connected to the second PCB at a third angle, the third PCB comprising a communication interface configured to interconnect circuit traces of the first and second PCBs to associated circuit paths on the circuit board;

a fourth PCB opposite the third PCB, the fourth PCB defining an aperture disposed therethrough; and

a core surrounded by the first, second, third, and fourth PCBs, the core defining a channel having a metal insert positioned therein, wherein the metal insert is accessible through the aperture and includes threading for receiving and securing a threaded end of a fastener.

2. The module of claim 1, wherein the first angle is about ninety degrees.

3. The module of claim 1, wherein the first PCB comprises layers arranged in a stack formation, the layers comprising:

a first layer comprising at least a portion of the circuit traces;

a second layer arranged adjacent to the first layer, the second layer comprising a glass reinforced epoxy material; and

a third layer comprising an additional portion of the circuit traces, wherein the second layer further comprises communication vias configured to interconnect portions of the first layer and the third layer.

4. The module of claim 1, wherein at least a portion of the circuits of the first PCB are directly connected to at least a portion of the circuits of the second PCB at a junction between the first PCB and the second PCB.

5. The module of claim 1, wherein the at least one communication interface comprises a ball-grid array configured to establish communication between components associated with the first and second PCBs and the circuit board.

6. A cuboid module configured to mount electronic components to a circuit board, the module comprising:

a core defining a channel therein,

one or more lateral walls surrounding the core, each of the one or more lateral walls being configured to mount at a non-zero angle with respect to the circuit board, wherein each of the one or more lateral walls includes a printed circuit board (PCB) having circuit traces, and edge connectors configured to electrically couple at least one of the circuit traces to a corresponding electrical trace disposed on the circuit board;

a top wall adjacent to the one or more lateral walls, wherein the top wall includes a PCB and an aperture therethrough; and

a metal insert disposed within the channel and aligned with the aperture, wherein the metal inert includes threads for retaining a threaded end of a fastener when the fastener is received through the aperture.

7. The cuboid module of claim 6, further comprising:

a bottom wall adjacent to the one or more lateral walls and substantially parallel to the top wall, the bottom wall comprising at least one communication interface configured to interconnect at least some of the circuit traces with at least some of the corresponding electrical traces on the circuit board, wherein the bottom wall is configured to be mechanically coupled to the circuit board.

8. The cuboid module of claim 7, wherein when the fastener extends through the aperture and secures the cuboid module to a mounting member, the module is operative as a standoff between the PCB and the mounting member.

9. The cuboid module of claim 8, wherein when the fastener is a conductive fastener, the cuboid module is configured to position the conductive fastener within the aperture such that the fastener provides an electrically conductive pathway through which at least one of the circuit traces of the module is electrically coupled with the mounting member.

10. The cuboid module of claim 7, wherein at least one of the one or more the lateral walls further comprises a plurality of layers arranged in a stack formation, the plurality of layers comprising at least:

a first layer comprising at least a portion of the circuit traces;

a second layer arranged adjacent to the first layer, the second layer comprising a supportive material; and

a third layer comprising an additional portion of the circuit traces, and wherein the second layer further comprises a plurality of communication vias configured to interconnect portions of the first layer and the third layer.

11. The cuboid module of claim 7, wherein the at least one communication interface comprises a ball-grid array configured to establish communication between components associated with the one or more lateral walls and the circuit board.

12. The cuboid module of claim 7, wherein the aperture is a first aperture, and wherein the bottom wall further comprises a second aperture in registration with the first aperture of the top wall, the second aperture arranged to receive and support the fastener.

13. The cuboid module of claim 12, wherein the first and second apertures are disposed to allow a direct mechanical coupling between the fastener and the circuit board.

14. A three dimensional module configured to increase useable space on a circuit board, the module comprising:

a central core formed from a solid material;

one or more side surfaces arranged about and surrounding the central core, each of the one or more side surfaces comprising a printed circuit board (PCB) having circuit traces embedded therein and configured to interconnect electronic components arranged thereon;

a base surface connected to the one or more side surfaces and configured to mount the three dimensional module to the circuit board, the base surface comprising at least one communication interface configured to interconnect the circuit traces to associated circuit paths on the circuit board;

a threaded securing feature located within the central core and configured to secure a threaded end of a fastener within the central core; and

an upper surface opposite the base surface and connected to the one or more side surfaces, the upper surface comprising a PCB and defining an aperture permitting access to the threaded securing feature.

15. The module of claim 14, wherein the one or more side surfaces are arranged substantially orthogonal to the base surface.

16. The module of claim 14, wherein the central core comprises a glass-reinforced epoxy material, and wherein each surface of the one or more side surfaces comprises layers wherein at least one of the layers comprises the glass-reinforced epoxy material.