Circuit assemblies and related methods
View Patent ↗In exemplary embodiments, a circuit assembly may be provided on and/or supported by an electrically conductive structure, such as a board level shield, a midplate, a bracket, a precision metal part, etc. For example, a circuit assembly may be provided on and/or supported by an outer top surface of a board level shield. In an exemplary embodiment, an assembly generally includes an electrically conductive structure configured for a first functionality in the electronic device. An electrically nonconductive layer is on at least part of the electrically conductive structure. First electrical component(s) are at least partly on the electrically nonconductive layer and configured to define at least a portion of a circuit assembly for electrical connection with one or more second electrical components of the electronic device. The electrically conductive structure may thus be configured for a second functionality in the electronic device.
1. An assembly suitable for use in an electronic device, the assembly comprising:
a board level shield (BLS) having an outer surface;
dielectric material along at least a portion of the outer surface of the BLS; and
electrically conductive material along at least a portion of the dielectric material such that the dielectric material is between the electrically conductive material and the outer surface of the BLS, whereby the electrically conductive material is configured to define at least a portion of a circuit assembly for routing signals and/or for electrically connecting with one or more components of the electronic device, and whereby the BLS is multifunctional having a first functionality of providing EMI shielding and grounding and a second functionality of supporting the circuit assembly.
2. The assembly of claim 1 , wherein the dielectric material is thermally conductive, and wherein the BLS has a third functionality of defining or providing part of a thermally-conductive heat path within the electronic device from a heat source to a heat dissipating device or component.
3. The assembly of claim 1 , wherein the dielectric material comprises one or more of a printed dielectric surface, a sprayed dielectric surface, and/or a painted dielectric surface.
4. The assembly of claim 1 , wherein:
the electrically conductive material comprises one or more of a flexible circuit, a pattern of electrically conductive material, and/or one or more routing connections; and
the electrically conductive material is connected or connectible between two or more electrical components.
5. The assembly of claim 1 , wherein the electrically conductive material comprises a flexible circuit including one or more of a polyimide film, an adhesive, and/or a metal foil.
6. The assembly of claim 1 , wherein:
the BLS is configured for installation to a substrate for providing electromagnetic interference (EMI) shielding for one or more components on the substrate; and
the electrically conductive material is configured for electrical connection with one or more other components on the same substrate that are not under the BLS when the BLS is installed to the substrate.
7. The assembly of claim 1 , wherein:
the BLS comprises a cover and one or more sidewalls depending from the cover;
the dielectric material is along at least a portion of an outer surface of the cover; and
the electrically conductive material defines at least a portion of the circuit assembly along the cover of the BLS and configured for electrically connecting with one or more components above and/or on top of the cover of the BLS.
8. The assembly of claim 7 , wherein:
the dielectric material is along at least a portion of an outer surface of at least one sidewall of the one or more sidewalls; and
the electrically conductive material defines at least a portion of the circuit assembly along the at least one sidewall.
9. The assembly of claim 8 , wherein:
the BLS is configured for installation to a first printed circuit board (PCB);
the assembly further comprises a second printed circuit board (PCB) on the outer surface of the cover or on the dielectric material along the outer surface of the cover; and
the electrically conductive material extends from the second PCB along the cover and the at least one side wall of the BLS to the first PCB for electrically connecting one or more components of the first PCB with one or more components of the second PCB.
10. The assembly of claim 7 , wherein:
the dielectric material is along at least a portion of an outer surface of at least two opposing sidewalls of the one or more sidewalls; and
the electrically conductive material defines one or more routing connections between the two opposing sidewalls across the cover of the BLS.
11. The assembly of claim 1 , wherein:
the dielectric material is directly on the at least a portion of the outer surface of the BLS; and
the electrically conductive material is directly on the at least a portion of the dielectric material.
12. An electronic device comprising the assembly of claim 1 , a printed circuit board (PCB), one or more first components on the PCB, and one or more second components on the PCB, wherein the BLS is installed on the PCB for providing electromagnetic interference (EMI) shielding for the one or more first components on the PCB, and wherein the electrically conductive material is electrically connected with the one or more second components on the PCB.