Back-to-back stacked dies
First Claim
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1. A method of manufacturing a packaged circuit having a first die mounted on an inverted second die, the method comprising:
- mounting the second die to a lead frame such that an active side of the second die is attached to the lead frame, wherein the second die includes a power stage with source, drain, and gate connections on the active side;
mounting the first die to a backside of the second die such that a backside of the first die is attached to the backside of the second die, wherein the first die has a lateral structure with all signal connections on an active side of the first die, said signal connections include source, drain, and gate connections;
electrically coupling the active side of the first die to the lead frame; and
electrically coupling the backside of the second die to the lead frame, wherein electrically coupling the backside includes electrically coupling a substrate of the second die to the lead frame.
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Abstract
Embodiments disclosed herein provide for a circuit including first die having an active side and a backside, wherein the first die is flip-chip mounted to a carrier. The circuit also includes a second die stacked on the backside of the first die, wherein the second die is stacked on the first die such that a backside of the second die is facing the backside of the first die and an active side of the second die faces away from the first die.
34 Citations
11 Claims
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1. A method of manufacturing a packaged circuit having a first die mounted on an inverted second die, the method comprising:
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mounting the second die to a lead frame such that an active side of the second die is attached to the lead frame, wherein the second die includes a power stage with source, drain, and gate connections on the active side; mounting the first die to a backside of the second die such that a backside of the first die is attached to the backside of the second die, wherein the first die has a lateral structure with all signal connections on an active side of the first die, said signal connections include source, drain, and gate connections; electrically coupling the active side of the first die to the lead frame; and electrically coupling the backside of the second die to the lead frame, wherein electrically coupling the backside includes electrically coupling a substrate of the second die to the lead frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification