Integrated Circuit Layout Isolation for Timing Stability
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Solution Overview
Problem
The miniaturization of integrated circuits poses challenges in design and manufacturing, particularly in reducing variations and uncertainties in time delays due to layout environment changes, which existing technologies struggle to address effectively.
Innovation Solution
The implementation of a combined circuit cell structure, where a main circuit is positioned between group-one and group-two circuits, utilizing isolation structures to separate active-region structures into parts, reducing the main circuit's dependency on the layout environment and thereby minimizing time delay variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If standard cell layout designs are miniaturized to reduce device size and power consumption, then device functionality and speed improve, but time delay variations and uncertainties due to layout environment changes increase
Solution Approach 1:
The patent applies segmentation by dividing the standard cell layout into distinct regions: a first region containing a first circuit, a second region containing a second circuit, and a third region containing a third circuit. This spatial segmentation isolates the main circuit (second circuit) from adjacent circuits, reducing the impact of layout environment variations on timing performance while maintaining miniaturization benefits.
2Volume of moving object
If standard cell layout designs are miniaturized, then device size and power consumption reduce, but design and manufacturing specifications become stricter
Solution Approach 1:
The patent applies local quality by assigning different functional characteristics to different regions of the standard cell layout. The first, second, and third regions are configured with specific circuit functions and isolation characteristics, allowing each region to be optimized independently for its specific purpose while maintaining overall miniaturization and meeting manufacturing specifications.
3Area of stationary object
If circuits are placed closer together in miniaturized designs, then device size reduces, but dependency on layout environment increases
Solution Approach 1:
The patent applies the intermediary principle by introducing a third circuit as a buffer between the first and second circuits. This intermediary circuit reduces direct interaction and coupling between adjacent circuits, thereby minimizing the impact of layout environment changes on the main circuit's timing performance while maintaining compact device area.
Data Source
AI summary
An integrated circuit includes a middle active-region structure between a group-one active-region structure and a group-two active-region structure. The integrated circuit also includes a main circuit, a group-one circuit, and a group-two circuit. The main circuit includes at least one boundary gate-conductor intersecting the middle active-region structure. The group-one circuit includes a group-one isolation structure separating the group-one active-region structure into a first part in the group-one circuit and a second part in a first adjacent circuit. The group-two circuit includes a group-two isolation structure separating the group-two active-region structure into a first part in the group-two circuit and a second part in a second adjacent circuit.