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US 12,598,981 B2Granted
Port landing-free low-skew signal distribution with backside metallization and buried rail
AssigneeQUALCOMM Incorporated
InventorsMustafa Badaroglu, Zhongze Wang
Life of this patent
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Abstract
Disclosed are integrated circuit structures with buried rails and backside metals for routing input signals to and/or output signals from one or more cells of the integrated circuit structures. Port landing-free connections to input ports and/or from output ports are enabled. As a result, signal routing flexibility is enhanced.
Claims21
An integrated circuit structure, comprising:
- an oxide layer on an upper surface of a substrate;
- one or more cells on an upper surface of the oxide layer, each cell comprising one or more transistors configured to provide a logic function, a storage function, or both;
- one or more buried rails formed partially within the oxide layer and partially above the oxide layer;
- and
- one or more backside metals on a lower surface of the substrate
- wherein the one or more buried rails and the one or more backside metals are configured such that
- an input signal to a cell is routed to an input port of the cell through the one or more buried rails and the one or more backside metals, the cell being one of the one or more cells, the input signal being an input to the logic function and/or the storage function provided by the cell, or
- an output signal from the cell is routed from an output port of the cell through the one or more buried rails and the one or more backside metals, the output signal being an output of the logic function and/or the storage function provided by the cell, or
- both.
6 more elements
Dependencies are inferred from the claim text.