Fin Layout in Power Supply Switching Circuits for Standard Cell Placement
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Solution Overview
Problem
The positioning of fin-cut parts in semiconductor devices can decrease the efficiency of standard cell placement, as the presence of these cut parts in regions where they are not needed can hinder the effective arrangement of standard cells, particularly in power supply switching circuits.
Innovation Solution
A semiconductor device design that includes power supply switching circuits with and without fin-cut parts, strategically positioning those with fin-cut parts in wider regions and those without in narrower regions to optimize standard cell placement efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If power supply switching circuits including fin-cut parts are positioned in standard cell regions, then the number of fin-cut parts in standard cell regions increases, but the efficiency of positioning standard cells decreases
Solution Approach 1:
The patent applies local quality by differentiating the placement strategy based on region characteristics. Power supply switching circuits are selectively positioned in non-standard cell regions (such as logic circuit regions) rather than uniformly across all regions. This localized approach ensures that fin-cut parts are concentrated in areas where they do not interfere with standard cell placement efficiency, while preserving the integrity of standard cell regions.
2Productivity
If power supply switching circuits are positioned in non-standard cell regions, then fin-cut parts are avoided in standard cell regions, but the circuit layout complexity increases
Solution Approach 1:
The patent segments the semiconductor device into distinct functional regions: standard cell regions and non-standard cell regions (such as logic circuit regions). Power supply switching circuits are assigned to specific non-standard cell regions, creating a segmented layout that separates fin-cut parts from standard cell areas. This segmentation simplifies the overall placement strategy by providing clear spatial boundaries and reducing interference between different circuit components.
Data Source
AI summary
A semiconductor device includes: a substrate; a circuit region provided on the substrate; a first power supply line and a second power supply line, positioned in the circuit region; a first fin and a second fin, each extending in a first direction in the circuit region, in plan view, and protruding from the substrate; a first power supply switching circuit, positioned in the circuit region and including a first transistor formed with the first fin, the first circuit electrically connecting the first and second power supply lines, and the first fin extending in the first power supply switching circuit without cutting; and a second power supply switching circuit, positioned in the circuit region and including a second transistor formed with the second fin, the second circuit electrically connecting the first and second power supply lines, and including a fin-cut part in which the second fin is cut.