Standard Cell Layout Consolidation for Area Reduction
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Solution Overview
Problem
In System on Chip (SoC) layout design, standard cell libraries often result in suboptimal layouts due to redundancy in area, power consumption, and speed, as they are designed to accommodate various user requirements, leading to inefficiencies in specific design projects.
Innovation Solution
A method is provided to consolidate and optimize standard cell layouts by identifying splicing relationships between standard cells, reducing redundant areas, and adjusting layout configurations, including transferring redundant gate polysilicon connections, to create an optimized standard cell library that improves area efficiency and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If standard cell layouts are used as provided in the primary standard cell library, then design time and labor costs are reduced, but the layout area and power consumption are suboptimal due to redundancy
Solution Approach 1:
The patent performs preliminary consolidation and optimization of standard cell layouts before final design implementation. By analyzing splicing relationships between standard cells in advance and pre-optimizing their layouts, the system reduces layout area without increasing design time during actual project implementation. The optimization results are stored and reused across multiple designs.
Solution Approach 2:
The patent changes layout parameters by consolidating multiple standard cell layouts into optimized consolidated layouts. It adjusts layout configurations, removes redundant areas, and modifies interconnection structures based on splicing relationship analysis, thereby reducing the overall layout area while maintaining functionality.
2Ease of manufacture
If standard cell layouts are used as provided in the primary standard cell library, then ease of manufacture is improved, but power consumption increases due to redundant interconnections
Solution Approach 1:
The patent extracts and removes redundant gate polysilicon and unnecessary interconnections from standard cell layouts during the consolidation process. By identifying and eliminating these redundant elements based on splicing relationship analysis, the system reduces power consumption while maintaining ease of manufacture through systematic optimization rather than ad-hoc modifications.
Solution Approach 2:
The patent changes interconnection parameters by optimizing the routing and configuration of connections between standard cells. It reduces interconnection lengths and removes redundant wiring, thereby decreasing power consumption while maintaining manufacturability through structured layout consolidation.
3Area of stationary object
If standard cell layouts are consolidated and optimized based on splicing relationships, then layout area and power consumption are reduced, but design complexity increases
Solution Approach 1:
The patent creates universal optimized consolidated layouts that can be applied across multiple design projects. By analyzing splicing relationships and generating optimized layouts that work for various configurations, the system reduces design complexity for future projects while achieving area reduction. The optimized layouts serve multiple purposes and can be reused extensively.
Solution Approach 2:
The patent uses copying by storing optimized consolidated layouts and their associated splicing relationship data for reuse. Instead of performing complex optimization calculations for each new design, the system copies and applies pre-optimized layouts, thereby reducing design complexity while maintaining area reduction benefits across multiple projects.
4Area of stationary object
If redundant gate polysilicon is removed from standard layouts, then area efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent changes manufacturing parameters by systematically removing redundant gate polysilicon while adjusting other layout parameters to compensate. It modifies interconnection configurations and routing to maintain electrical functionality, thereby achieving area reduction without excessively increasing manufacturing precision requirements. The optimization process balances area efficiency with manufacturability.
Data Source
AI summary
The present disclosure relates to a layout design method, an integrated circuit, an operation chip, and a computing device. The layout design method comprises generating a primary layout on the basis of a circuit diagram netlist by using a primary standard cell library, the circuit diagram netlist comprising a first standard cell and a second standard cell, and the primary standard cell library comprising a first standard layout of the first standard cell and a second standard layout of the second standard cell. The method further comprises consolidating the first standard layout and the second standard layout on the basis of a splicing relationship between the first standard layout and the second standard layout in the primary layout to optimize the consolidated layout.