IC Layout Fin Count Segmentation for Power Optimization
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Solution Overview
Problem
The challenge in miniaturizing integrated circuits (ICs) is to reduce power consumption while maintaining speed and area requirements, as existing approaches do not effectively distribute transistors among regions with varying fin counts to optimize circuit performance.
Innovation Solution
The method involves generating an IC layout diagram that distributes transistors among regions with varying fin counts, selectively applying higher fin counts to critical circuit blocks to reduce power consumption while maintaining speed, by assigning different fin counts to different blocks of transistors based on timing and power analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If transistors are uniformly distributed across all regions, then manufacturing simplicity is maintained, but power consumption cannot be optimized for different circuit blocks
Solution Approach 1:
The layout is segmented into multiple regions with different fin counts (first region with first fin count, second region with second fin count). Transistors are selectively placed in different regions based on their timing requirements, allowing critical blocks to use higher fin counts for better performance while non-critical blocks use lower fin counts for power savings.
Solution Approach 2:
Different regions of the layout are assigned different fin counts tailored to their specific requirements. Critical circuit blocks are placed in regions with higher fin counts to achieve better timing, while non-critical blocks are placed in regions with lower fin counts to reduce power consumption. This local differentiation optimizes overall power efficiency.
2Speed
If higher fin counts are applied to all transistor blocks, then speed requirements are met, but power consumption increases
Solution Approach 1:
Instead of applying high fin counts universally, the invention applies higher fin counts partially only to critical blocks that require additional speed. Non-critical blocks use lower fin counts, avoiding unnecessary power consumption while still meeting the speed requirements of the critical portions of the circuit.
3Use of energy by moving object
If transistors are selectively distributed among regions with varying fin counts, then power consumption is optimized, but layout complexity increases
Solution Approach 1:
The layout is divided into distinct regions with different fin counts, creating a segmented structure that allows selective placement of transistors. This segmentation enables power optimization by matching fin counts to timing requirements while maintaining a systematic approach to layout organization.
Data Source
AI summary
A method includes positioning adjacent first through fourth active regions in a cell of an IC layout diagram, the first active region being a first type of an n-type or a p-type and corresponding to a first total number of fins, the second active region being a second type of the n-type or the p-type and corresponding to a second total number of fins, the third active region being the second type and corresponding to a third total number of fins, and the fourth active region being the first type and corresponding to a fourth total number of fins. Each of the first and second total numbers of fins is greater than each of the third and fourth total numbers of fins, and at least one of the positioning the first, second, third, or fourth active regions is performed by a processor.