Embedded carrier for an integrated circuit chip
First Claim
1. An electronic component comprising:
- a substrate having a top surface and a bottom surface opposite the top surface;
a structure embedded within the substrate, the structure comprising a plurality of conductive pads facing up (hereinafter “
face-up pads”
);
wherein the structure and the substrate are included in a monolithic integrated structure such that;
at least a portion of a bottom surface of the structure is in contact with the substrate to form an interface between the structure and the substrate; and
the structure has a top surface substantially coplanar with the top surface of the substrate;
an integrated circuit chip mounted face down on the structure, the integrated circuit chip comprising another plurality of conductive pads (hereinafter “
face-down pads”
) opposite to the face-up pads; and
a plurality of solder joints connecting the face-up pads to the face-down pads.
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Accused Products
Abstract
A carrier for an integrated chip is embedded into a substrate, so that stresses due to thermal expansion are uniformly distributed over an interface between the substrate and the carrier (hereinafter “embedded carrier”). Such an embedded carrier may be formed of a material having a coefficient of thermal expansion similar or identical to the coefficient of thermal expansion of an integrated circuit chip to be mounted thereon, so as to eliminate stresses (due to thermal expansion) at joints between the carrier and the integrated circuit chip. The just-described joints may be formed by any method well known in the art, e.g. flip-chip bonding. Such packaging of one or more integrated circuit chip(s) eliminates reliability issues associated with conventional flip chip bonded components, which are caused by, for example, concentration of stresses in conventional solder ball interconnections between a chip and a substrate.
81 Citations
59 Claims
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1. An electronic component comprising:
-
a substrate having a top surface and a bottom surface opposite the top surface;
a structure embedded within the substrate, the structure comprising a plurality of conductive pads facing up (hereinafter “
face-up pads”
);
wherein the structure and the substrate are included in a monolithic integrated structure such that;
at least a portion of a bottom surface of the structure is in contact with the substrate to form an interface between the structure and the substrate; and
the structure has a top surface substantially coplanar with the top surface of the substrate;
an integrated circuit chip mounted face down on the structure, the integrated circuit chip comprising another plurality of conductive pads (hereinafter “
face-down pads”
) opposite to the face-up pads; and
a plurality of solder joints connecting the face-up pads to the face-down pads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electronic component comprising:
-
a substrate;
a structure embedded within the substrate, the structure comprising a plurality of conductive pads facing up (hereinafter “
face-up pads”
);
an integrated circuit chip mounted face down on the structure, the integrated circuit chip comprising another plurality of conductive pads (hereinafter “
face-down pads”
) opposite to the face-up pads; and
a plurality of solder joints connecting the face-up pads to the face-down pads;
wherein the substrate comprises a plastic including fibers selected from a group consisting of glass, fiber glass and aramid materials; and
the coefficient of thermal expansion of the structure is between the coefficient of thermal expansion of the integrated circuit chip and the coefficient of thermal expansion of the substrate. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. An electronic component comprising:
-
a substrate having a top surface and a bottom surface opposite the top surface;
a structure embedded within the substrate, the structure comprising a plurality of conductive pads facing up (hereinafter “
face-up pads”
);
an integrated circuit chip mounted face down on the structure, the integrated circuit chip comprising another plurality of conductive pads (hereinafter “
face-down pads”
) opposite to the face-up pads; and
a plurality of solder joints connecting the face up pads to the face-down pads;
wherein the structure has a top surface substantially coplanar with the top surface of the substrate and the structure has a plurality of lands at a periphery thereof; and
the electronic component further comprises a lay of conductive material formed over said top surface of said structure and said top surface of said substrate, the layer being patterned to form an electrically conductive interconnect structure interconnecting the lands to another plurality of lands on the substrate. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. An electronic component comprising:
-
a substrate a structure embedded within the substrate, the structure comprising a plurality of conductive pads facing up (hereinafter “
face-up pads”
);
an integrated circuit chip mounted face down on the structure, the integrated circuit chip comprising another plurality of conductive pads (hereinafter “
face-down pads”
) opposite to the face-up pads; and
a plurality of solder joints connecting the face-up pads to the face-down pads;
wherein the structure embedded within the substrate comprises a plurality of vias, each via being connected to one of the face-up pads. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39)
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40. An electronic component comprising:
-
a substrate;
a structure embedded within the substrate, the structure comprising a plurality of conductive pads facing up (hereinafter “
face-up pads”
);
“
an integrated circuit chip mounted face down on the structure, the integrated circuit chip comprising another plurality of conductive pads (hereinafter “
face-down pads”
) opposite to the face-up pads; and
a plurality of solder joints connecting the face-up pads to the face-down pads;
wherein the face-up pads are hereinafter “
first face-up pads” and
the face-down pads are hereinafter “
first face-down pads”
; and
the structure comprises a plurality of second face-down pads arranged at locations spread out from the plurality of first face-up pads.
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- 41. The electronic component of claim 41 where the embedded structure comprises at least one active device.
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42. The electronic component of claim 42 where the active device is a power transistor.
- 44. The electronic component of claim 44 where the passive device is a capacitor.
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48. A structure comprising:
-
a substrate comprising a plurality of lands (hereinafter “
first lands”
); and
a carrier embedded within the substrate, the carrier comprising another plurality of lands (hereinafter “
second lands”
) electrically connected to the first lands, the carrier further comprising a plurality of conductive pads, the pads being arranged in a two of traces that electrically connect each of the pads to one of the second lands;
wherein;
the first lands are formed on a surface of the substrate;
the second lands are formed on a surface of the carrier, said surface of the carrier is substantially coplanar with said surface of the substrate; and
the carrier comprises a plurality of traces formed on said surfaces and connecting the first lands to the second lands.
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49. The structure of claim 49 wherein:
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the first lands are formed on a top surface of the substrate;
the second lands are formed on a top surface of the carrier, and the pads are also formed on said top surface of the carrier, the second lands being formed at a periphery of the carrier. - View Dependent Claims (50, 51, 52, 53, 55, 58, 59)
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54. The electronic component of claim 54 where the active device is a power transistor.
- 56. The electronic component of claim 56 where the passive device is a capacitor.
Specification