초록 ▼

According to various aspects, exemplary embodiments are disclosed of a two-piece metallic board level shield (BLS). In an exemplary embodiment, the BLS is solderable to a printed circuit board (PCB). The BLS includes a lid or cover and a fence or frame. The lid and fence are complementary in shape.

According to various aspects, exemplary embodiments are disclosed of a two-piece metallic board level shield (BLS). In an exemplary embodiment, the BLS is solderable to a printed circuit board (PCB). The BLS includes a lid or cover and a fence or frame. The lid and fence are complementary in shape. The lid may be mounted onto the fence via a locking mechanism in a first position and a compressed second position, where the locking mechanism provides resistance against internal upward forces when the BLS has been compressed into a second position. The BLS may be soldered to the PCB while in the first position, and subsequently compressed into the second position after the solder has hardened.

대표청구항 ▼

1. A shield suitable for use in providing electromagnetic interference (EMI) shielding for at least one component on a substrate, the shield comprising: a fence configured for installation to the substrate about the at least one component on the substrate, the fence including at least one opening ha

1. A shield suitable for use in providing electromagnetic interference (EMI) shielding for at least one component on a substrate, the shield comprising: a fence configured for installation to the substrate about the at least one component on the substrate, the fence including at least one opening having an upper portion, a lower portion, and one or more tabs inwardly extending from one or more sides of the at least opening between the upper and lower portions of the at least one opening;a lid including at least one detent positionable within the at least one opening of the fence such that the lid is attachable to the fence in multiple positions including: a first position in which the at least one detent is engaged within the upper portion of the at least one opening above the one or more tabs and the one or more tabs are disposed under and in contact with the at least one detent such that the lid is held in a raised position relative to the fence and a spaced distance separates an underside of the lid from an upper surface of the fence; anda second position in which the at least one detent is within the lower portion of the at least one opening below the one or more tabs and the one or more tabs are disposed above and in contact with the at least one detent such that the lid is held in a lowered position relative to the fence and the spaced distance is substantially eliminated between the underside of the lid and the upper surface of the fence. 2. The shield of claim 1, further comprising an interface material along the underside of the lid such that when the fence is installed to the substrate about the at least one component on the substrate: a spaced distance separates the interface material from the at least one component when the lid is attached to the fence in the first position; andthe spaced distance is substantially eliminated between the interface material and the at least one component when the lid is attached to the fence in the second position;wherein the interface material comprises one or more of a thermal interface material, an EMI absorber, a thermally-conductive EMI absorber, an EMI shielding material, and/or a thermally-conductive electrical insulator. 3. The shield of claim 2, wherein: the interface material is compressed against the at least one component when the lid is attached to the fence in the second position; andthe interface material is pushed down against the at least one component when the lid is attached to the fence in the second position, which results in an upward force that pushes the lid away from the fence, and the engagement of the at least one detent with the lower portion of the at least one opening and the contact between the at least one detent and the one or more tabs holds the lid in place on the fence in the second position despite the upward force. 4. The shield of claim 1, further comprising a thermal interface material along the underside of the lid such that when the fence is installed to the substrate about the at least one component on the substrate: a spaced distance separates the thermal interface material from the at least one component when the lid is attached to the fence in the first position; andthe thermal interface material is compressed against the at least one component when the lid is attached to the fence in the second position, and the thermal interface material defines at least a portion of a thermally-conductive heat path from the at least one component to the lid. 5. The shield of claim 1, wherein: contact between a lower surface of the at least one detent and an upper surface of the one or more tabs in the first position inhibits downward movement of the lid relative to the fence such that the underside of the lid remains above and spaced apart from the upper surface of the fence; andcontact between an upper surface of the at least one detent and a lower surface of the one or more tabs in the second position inhibits upward movement of the lid relative to the fence such that the lid is not removable from the fence without deforming the lid to disengage the at least one detent from the one or more tabs. 6. The shield of claim 1, wherein the one or more tabs comprise a pair of tabs that extend towards each other from opposite sides of the at least one opening and that are bent outwardly relative to an interior of the shield. 7. The shield of claim 1, wherein: the at least one detent is configured to contact and slide along the one or more tabs when the lid is moved from the first position to the second position; andsliding contact of the at least one detent with the one or more tabs causes the at least one detent to move outwardly from the upper portion of the at least one opening, across and below the one or more tabs, and into the lower portion of the at least one opening below the one or more tabs. 8. The shield of claim 1, wherein: the at least one detent is resilient such that after being moved past the one or more tabs and into alignment with the lower portion of the at least one opening, the at least one detent resiliently moves inwardly into the lower portion of the at least one opening under the one or more tabs; andthe one or more tabs comprise a pair of tabs that extend towards each other from opposite sides of the at least one opening; andthe pair of tabs and the upper and lower portions of the at least one opening cooperatively define a generally hourglass closed shape for the at least one opening. 9. The shield of claim 1, wherein: the shield is a two-piece board level shield including the lid and the fence;the substrate is a printed circuit board;a bottom of the fence is solderable to an upper surface of the printed circuit board when the lid is in the first position in which a base of the lid is separated and spaced apart from the upper surface of the printed circuit board; andthe lid is movable into the second position after the bottom of the fence is soldered to the upper surface of the printed circuit board, whereby the lid and the fence are operable for providing EMI shielding for the at least one component on the printed circuit board that are within an interior cooperatively defined by the lid and the fence. 10. An electronic device comprising the shield of claim 1 and the substrate, the substrate is a printed circuit board including the at least one component thereon, wherein: a bottom of the fence is soldered to an upper surface of the printed circuit board; andthe lid is movable from the first position to the second position in which the lid and the fence are operable for providing EMI shielding for the at least one component on the printed circuit board that are within an interior cooperatively defined by the lid and the fence. 11. A shield suitable for use in providing electromagnetic interference (EMI) shielding for at least one component on a substrate, the shield comprising: a fence configured for installation to the substrate about the at least one component on the substrate, the fence including at least one opening;a lid including at least one detent positionable within different upper and lower portions of the same at least one opening of the fence such that the lid is positionable on the fence in multiple positions including: a first position in which the at least one detent is engaged within the upper portion of the at least one opening and a spaced distance separates an underside of the lid from an upper surface of the fence; anda second position in which the at least one detent is engaged within the lower portion of the at least one opening and the spaced distance is substantially eliminated between the underside of the lid and the upper surface of the fence. 12. The shield of claim 11, wherein: the at least one opening of the fence includes one or more tabs inwardly extending from one or more sides of the at least opening, the upper portion is above the one or more tabs, and the lower portion is below the one or more tabs;the at least one detent of the lid is engaged within the upper portion of the at least one opening above the one or more tabs that are disposed under and in contact with the at least one detent such that the lid is held in a raised position relative to the fence when the lid is positioned on the fence in the first position; andthe at least one detent of the lid is engaged within the lower portion of the at least one opening below the one or more tabs that are disposed above and in contact with the at least one detent such that the lid is held in a lowered position relative to the fence when the lid is positioned on the fence in the second position. 13. The shield of claim 11, further comprising an interface material along the underside of the lid such that when the fence is installed to the substrate about the at least one component on the substrate: a spaced distance separates the interface material from the at least one component when the lid is positioned on the fence in the first position; andthe spaced distance is substantially eliminated between the interface material and the at least one component when the lid is positioned on the fence in the second position;wherein the interface material comprises one or more of a thermal interface material, an EMI absorber, a thermally-conductive EMI absorber, an EMI shielding material, and/or a thermally-conductive electrical insulator. 14. The shield of claim 13, wherein: the interface material is compressed against the at least one component when the lid is positioned on the fence in the second position; andthe interface material is pushed down against the at least one component when the lid is positioned on the fence in the second position, which results in an upward force that pushes the lid away from the fence, and the engagement of the at least one detent within the at least one opening holds the lid in place on the fence in the second position despite the upward force. 15. The shield of claim 11, further comprising a thermal interface material along the underside of the lid such that when the fence is installed to the substrate about the at least one component on the substrate: a spaced distance separates the thermal interface material from the at least one component when the lid is positioned on the fence in the first position; andthe thermal interface material is compressed against the at least one component when the lid is positioned on the fence in the second position, and the thermal interface material defines at least a portion of a thermally-conductive heat path from the at least one component to the lid. 16. A method comprising: attaching a lid of a shield to a fence of the shield in a first position such that at least one detent of the lid is engaged within an upper portion of at least one opening of the fence above one or more tabs of the fence and the one or more tabs are disposed under and in contact with the at least one detent such that the lid is held in a raised position relative to the fence and a spaced distance separates an underside of the lid from an upper surface of the fence; andmoving the lid relatively towards the fence from the first position to a second position in which the at least one detent is engaged within a lower portion of the at least one opening below the one or more tabs and the one or more tabs are disposed above and in contact with the at least one detent such that the lid is held in a lowered position relative to the fence and the spaced distance is substantially eliminated between the underside of the lid and the upper surface of the fence. 17. The method of claim 16, further comprising soldering a bottom of the fence to an upper surface of a printed circuit board when the lid is attached to the fence in the first position, and then after soldering, moving the lid relatively towards the fence from the first position to the second position. 18. The method of claim 16, wherein: moving the lid relatively towards the fence from the first position to the second position includes moving an interface material along the underside of the lid such that a spaced distance separating the interface material from at least one component on a printed circuit board when the lid is attached to the fence in the first position is substantially eliminated when the lid is attached to the fence in the second position; andthe interface material comprises one or more of a thermal interface material, an EMI absorber, a thermally-conductive EMI absorber, an EMI shielding material, and/or a thermally-conductive electrical insulator. 19. The method of claim 16, wherein: moving the lid relatively towards the fence from the first position to the second position includes compressing an interface material along the underside of the lid against at least one component on a printed circuit board, which results in an upward force that pushes the lid away from the fence;the engagement of the at least one detent within the lower portion of the at least one opening and the contact between the at least one detent and the one or more tabs holds the lid in place on the fence in the second position despite the upward force; andthe interface material comprises one or more of a thermal interface material, an EMI absorber, a thermally-conductive EMI absorber, an EMI shielding material, and/or a thermally-conductive electrical insulator. 20. The method of claim 16, wherein moving the lid relatively towards the fence from the first position to the second position includes sliding the at least one detent along the one or more tabs such that the at least one detent moves outwardly from the upper portion of the at least one opening, across and below the one or more tabs, and into the lower portion of the at least one opening below the one or more tabs; and wherein: attaching the lid to the fence in the first position includes contacting a lower surface of the at least one detent with an upper surface of the one or more tabs, which inhibits downward movement of the lid relative to the fence such that the underside of the lid remains above and spaced apart from the upper surface of the fence; andmoving the lid relatively towards the fence from the first position to the second position includes contacting an upper surface of the at least one detent with a lower surface of the one or more tabs, which inhibits upward movement of the lid relative to the fence such that the lid is not removable from the fence without deforming the lid to disengage the at least one detent from the one or more tabs.