Electrically interconnected stacked die assemblies
First Claim
1. A stacked die assembly, comprising a plurality of die stacked one over another, each die having a front side and a back side and sidewalls, wherein adjacent die in the stack are provided with interconnect pads arranged at the front side along a die margin, and wherein the die edge at the margin of a first die is offset in relation to the margin of a second die, and wherein interconnect pads on the die are electrically connected by continuous traces of an electrically conductive material each on a portion of a surface of at least one said die, wherein the electrically conductive material comprises an electrically conductive polymer.
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Abstract
In die stack assembly configurations successive die in the stack are offset at a die edge at which die pads are situated, and the die are interconnected by electrically conductive traces. In some embodiments the electrically conductive traces are formed of an electrically conductive polymer. An electrically insulative conformal coating is provided having openings at die pads that are electrically connected.
249 Citations
38 Claims
- 1. A stacked die assembly, comprising a plurality of die stacked one over another, each die having a front side and a back side and sidewalls, wherein adjacent die in the stack are provided with interconnect pads arranged at the front side along a die margin, and wherein the die edge at the margin of a first die is offset in relation to the margin of a second die, and wherein interconnect pads on the die are electrically connected by continuous traces of an electrically conductive material each on a portion of a surface of at least one said die, wherein the electrically conductive material comprises an electrically conductive polymer.
- 31. A stack of die comprising a plurality of die, each die having interconnect pads situated in a margin along at least a first die edge, wherein interconnect pads on a first die are electrically connected by respective traces of an electrically conductive polymer or an electrically conductive ink to interconnect pads on a second die, the traces extending continuously between the interconnect pads of the first and second dies and overlying a sidewall of at least one of the first and second dies.
Specification