Flipped die stack assemblies with leadframe interconnects
First Claim
1. A microelectronic assembly, comprising:
- a chip stack comprising a plurality of microelectronic elements having front surfaces, each front surface defining a respective plane of a plurality of planes, each microelectronic element having a plurality of contacts at the front surface and an edge surface extending away from its front surface, and a dielectric region on an edge surface of the respective microelectronic element, the dielectric region having a remote surface displaced in a lateral direction beyond the edge surface of the respective microelectronic element;
a plurality of leadframe interconnects each electrically coupled to a contact on one of the microelectronic elements and each having an end at the remote surface of the dielectric region of the respective microelectronic element;
a support element having a plurality of electrically conductive contacts insulated from one another at a major surface thereof, the major surface defining a second plane non-parallel to the plurality of parallel planes, wherein the chip stack is mounted to the support element with the remote surfaces of the dielectric regions towards the major surface and the leadframe interconnects facing and joined with corresponding contacts at the major surface.
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Accused Products
Abstract
A microelectronic assembly includes a stack of microelectronic elements, e.g., semiconductor chips, each having a front surface defining a respective plane of a plurality of planes. A leadframe interconnect joined to a contact at a front surface of each chip may extend to a position beyond the edge surface of the respective microelectronic element. The chip stack is mounted to support element at an angle such that edge surfaces of the chips face a major surface of the support element that defines a second plane that is transverse to, i.e., not parallel to the plurality of parallel planes. The leadframe interconnects are electrically coupled at ends thereof to corresponding contacts at a surface of the support element.
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Citations
13 Claims
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1. A microelectronic assembly, comprising:
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a chip stack comprising a plurality of microelectronic elements having front surfaces, each front surface defining a respective plane of a plurality of planes, each microelectronic element having a plurality of contacts at the front surface and an edge surface extending away from its front surface, and a dielectric region on an edge surface of the respective microelectronic element, the dielectric region having a remote surface displaced in a lateral direction beyond the edge surface of the respective microelectronic element; a plurality of leadframe interconnects each electrically coupled to a contact on one of the microelectronic elements and each having an end at the remote surface of the dielectric region of the respective microelectronic element; a support element having a plurality of electrically conductive contacts insulated from one another at a major surface thereof, the major surface defining a second plane non-parallel to the plurality of parallel planes, wherein the chip stack is mounted to the support element with the remote surfaces of the dielectric regions towards the major surface and the leadframe interconnects facing and joined with corresponding contacts at the major surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A microelectronic assembly, comprising:
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a chip stack comprising a plurality of microelectronic elements having front surfaces, each front surface defining a respective plane of a plurality of planes, each microelectronic element having a plurality of contacts at the front surface and an edge surface extending away from its front surface in a first direction transverse to its front surface, and a dielectric region overlying an edge surface of the respective microelectronic element, the dielectric region extending from the edge surface in a second direction transverse to the edge surface to a remote surface displaced in the second direction beyond the edge surface of the respective microelectronic element; a plurality of leadframe interconnects each electrically coupled to a contact on one of the microelectronic elements and each having an end at the remote surface of the dielectric region of the respective microelectronic element; a support element having a plurality of electrically conductive contacts insulated from one another at a major surface thereof, the major surface defining a second plane non-parallel to the plurality of parallel planes, wherein the chip stack is mounted to the support element with the remote surfaces of the dielectric regions towards the major surface and the leadframe interconnects facing and joined with corresponding contacts at the major surface. - View Dependent Claims (11, 12, 13)
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Specification