Electromagnetic interference shield device with conductive encapsulant and dam
First Claim
1. A package for a device, the package comprising:
- a substrate including a common voltage plane and a mounting region, the device mounted to the mounting region;
an electrically conductive dam structure disposed on a surface of the substrate, the electrically conductive dam structure electrically coupled to the common voltage plane and circumscribing a perimeter of the mounting region;
an electrically insulating encapsulant at least partially filling a pocket defined by the substrate and the electrically conductive dam structure, the electrically insulating encapsulant contacting the electrically conductive dam structure; and
an electrically conductive encapsulant overlying the electrically insulating encapsulant, the electrically conductive encapsulant coupled to the electrically conductive dam structure.
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Accused Products
Abstract
A package for a device includes a substrate having a common voltage plane and a mounting region. The device is mounted to the mounting region. An electrically conductive dam structure is disposed on the upper surface of the substrate circumscribing the perimeter of the mounting region. The electrically conductive dam structure is coupled to the common voltage plane. An electrically insulating encapsulant at least partially fills the pocket defined by the substrate and the electrically conductive dam structure. The electrically insulating encapsulant contacts the electrically conductive dam structure. An electrically conductive encapsulant overlies the electrically insulating encapsulant and is coupled to the electrically conductive dam structure.
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Citations
19 Claims
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1. A package for a device, the package comprising:
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a substrate including a common voltage plane and a mounting region, the device mounted to the mounting region;
an electrically conductive dam structure disposed on a surface of the substrate, the electrically conductive dam structure electrically coupled to the common voltage plane and circumscribing a perimeter of the mounting region;
an electrically insulating encapsulant at least partially filling a pocket defined by the substrate and the electrically conductive dam structure, the electrically insulating encapsulant contacting the electrically conductive dam structure; and
an electrically conductive encapsulant overlying the electrically insulating encapsulant, the electrically conductive encapsulant coupled to the electrically conductive dam structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A package comprising:
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a substrate having a first surface and input/output terminals;
a semiconductor die coupled to the first surface of the substrate and electrically coupled to the input/output terminals of the substrate;
an electrically conductive dam on the first surface and defining a pocket around said semiconductor die, wherein said electrically conductive dam has a height above the first surface and is electrically coupled to at least one of the input/output terminals;
an electrically insulating encapsulant disposed within the pocket and covering the semiconductor die, said electrically insulating encapsulant extending to a height above the first surface that is less than the height of the electrically conductive dam;
an electrically conductive encapsulant disposed within the pocket over the electrically insulating encapsulant and in electrical communication with the electrically conductive dam. - View Dependent Claims (16, 17)
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18. A package comprising:
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a substrate having a first surface with electrically conductive portions;
an electrically conductive dam on the first surface and electrically coupled to some of the electrically conductive portions, said electrically conductive dam defining a pocket;
a semiconductor die electrically coupled to some of the electrically conductive portions of the substrate and disposed within the pocket;
an electrically insulating encapsulant disposed on the first surface entirely within the pocket, covering the semiconductor die, and contacting said electrically conductive dam around an entire inner perimeter of the electrically conductive dam;
an electrically conductive encapsulant disposed entirely within the pocket over the electrically insulating encapsulant, said electrically conductive encapsulant being in contact with the electrically conductive dam. - View Dependent Claims (19)
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Specification