Three-dimensional multichip module systems
First Claim
1. A multichip integrated circuit package having an upper surface and a lower surface, said package comprising:
- a substrate;
a plurality of integrated circuit chips disposed on an upper surface of said substrate, said integrated circuit chips each having at least one interconnection pad on a top surface thereof;
encapsulant surrounding said integrated circuit chips, said encapsulant surrounding said integrated circuit chips, the integrated circuit chips and having a plurality of via openings therein, said openings being aligned with at least some of said interconnection pads;
a pattern of interconnection conductors disposed above the upper surface of said encapsulant so as to extend between at least some of the openings therein and so as to provide electrical connection to at least some of the interconnection pads through the said openings; and
conductive means disposed within said substrate and said encapsulant so as to provide electrical connection between the lower surface of said substrate and the interconnection conductors disposed above the upper surface of said encapsulant, said conductive means being disposed within said encapsulant so as to pass between said plurality of integrated circuit chips.
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Accused Products
Abstract
Multichip integrated circuit packages and methods of fabrication, along with systems for stacking such packages, are disclosed. In one embodiment, the multichip package has an array of contact pads on an upper surface thereof and an array of contact pads on a lower surface thereof. Connection means are provided for electrically coupling at least some of the contact pads on each package surface with selected ones of the contact pads on the other surface, or selected interconnection metallization which is disposed between integrated circuits located within the package. The contact pads of each surface array are preferably equal in number and vertically aligned such that multiple multichip packages may be readily stacked, with a conductive means disposed therebetween for electrically coupling the contact pads of one package to the pads of another package. In addition, various internal and external heat sink structures are provided which facilitate dissipation of heat in a multichip package or in a stack of multichip packages. Specific processing methods for each of the various multichip modules and stack systems disclosed are described herein.
515 Citations
49 Claims
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1. A multichip integrated circuit package having an upper surface and a lower surface, said package comprising:
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a substrate; a plurality of integrated circuit chips disposed on an upper surface of said substrate, said integrated circuit chips each having at least one interconnection pad on a top surface thereof; encapsulant surrounding said integrated circuit chips, said encapsulant surrounding said integrated circuit chips, the integrated circuit chips and having a plurality of via openings therein, said openings being aligned with at least some of said interconnection pads; a pattern of interconnection conductors disposed above the upper surface of said encapsulant so as to extend between at least some of the openings therein and so as to provide electrical connection to at least some of the interconnection pads through the said openings; and conductive means disposed within said substrate and said encapsulant so as to provide electrical connection between the lower surface of said substrate and the interconnection conductors disposed above the upper surface of said encapsulant, said conductive means being disposed within said encapsulant so as to pass between said plurality of integrated circuit chips. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 32, 33, 42, 43, 44)
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24. A multichip module stack system comprising:
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a first multichip integrated circuit package and a second multichip integrated circuit package, each of said packages having an array of conductor pads on at least one of an upper surface and a lower surface thereof, each of said array of conductor pads being electrically connected to at least some of the integrated circuit chips disposed within said respective package, each of said packages including; (i) a substrate, (ii) a plurality of integrated circuit chips disposed on an upper surface of said substrate, said integrated circuit chips each having at least one interconnection pad on a top surface thereof, (iii) an encapsulant surrounding said integrated circuit chips, said encapsulant having an upper surface above the tops of the integrated circuit chips and having a plurality of via openings therein, said openings being aligned with at least some of the interconnection pads, (iv) a pattern of interconnection conductors disposed above the upper surface of said encapsulant so as to extend between at least some of the openings therein and so as to provide electrical connection between at least some of the interconnection pads through said via openings; means for electrically coupling at least some of said conductor pads in said arrays of conductor pads on said first and second multichip packages; and said packages being in a stacked configuration with said electrical coupling means located therebetween. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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34. A multichip integrated circuit package comprising:
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a substrate having an upper and lower surface and at least one liquid receiving cooling channel therein, said cooling channel being disposed so as not to intersect said upper and lower substrate surfaces; a plurality of integrated circuit chips disposed on said substrate'"'"'s upper surface, said integrated circuit chips each having at least one interconnection pad on a top surface thereof; an encapsulant surrounding said integrated circuit chips, said encapsulant having an upper surface above the tops of the integrated circuit chips and having a plurality of via openings therein, said via openings being aligned with at least some of said interconnection pads; and a pattern of interconnection conductors disposed above the upper surface of said encapsulant so as to extend between at least some of said openings and so as to provide electrical connection to at least some of said interconnection pads through said openings. - View Dependent Claims (35, 36, 37, 38)
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39. A heat sink structure for assembly with at least one multichip integrated circuit package, said structure comprising:
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a substrate having an upper surface and a lower surface, said upper and lower surfaces being in substantially parallel planes; at least one cooling channel disposed within said substrate, said at least one said cooling channel extending substantially parallel to the planes of said upper and lower substrate surfaces; and at least one metalized column in said substrate, said metalized column being positioned so as not to intersect said at least one channel and being oriented as so to perpendicularly intersect the planes of said upper an lower surfaces. - View Dependent Claims (40, 41)
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45. A multichip module stack system comprising:
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a first multichip integrated circuit package and a second multichip integrated circuit package, each of said packages having a plurality of columns therein extending between an upper surface and a lower surface thereof, and each including metallization disposed therein, at least some of said metalized columns being electrically connected to at least some of the integrated circuit chips disposed within said respective package, each of said packages including; (i) a substrate, (ii) a plurality of integrated circuit chips disposed on an upper surface of said substrate, said integrated circuit chips each having at least one interconnection pad on a top surface thereof, (iii) an encapsulant surrounding said integrated circuit chips, said encapsulant having an upper surface above the tops of the integrated circuit chips and having a plurality of via openings therein, said via openings being aligned with at least some of the interconnection pads, (iv) a pattern of interconnection conductors disposed above the upper surface of said encapsulant so as to extend between at least some of the openings therein and so as to provide electrical connection between at least some of the interconnection pads through said via openings; means for electrically coupling at least some of said plurality of metalized columns of said first multichip package to at least some of said plurality of metalized columns of said second multichip package; and said packages being disposed in a stacked configuration. - View Dependent Claims (46, 47, 48, 49)
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Specification