Integrated Circuit Layout Cuts for Constraint Compliance
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Solution Overview
Problem
The design and manufacturing of integrated circuits face challenges in satisfying design constraints such as element proximity, signal timing, and power consumption without increasing physical size or power consumption, as higher integration density and constraint satisfaction often lead to increased size and power consumption.
Innovation Solution
A computer-implemented method for designing integrated circuits that involves receiving input data, performing simulations to check for design constraint violations, and creating initial and redesign layouts by adding cutting areas or dummy elements like decoupling capacitors and transistors without increasing the circuit's size, allowing for effective satisfaction of design constraints while maintaining physical size and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If design constraints are satisfied by adding buffer cells or decoupling capacitors, then reliability is improved, but physical size and power consumption increase
Solution Approach 1:
The patent combines multiple functions into single circuit elements. Buffer cells are designed to simultaneously provide signal timing control and act as decoupling capacitors. Logic gates are configured to serve both computational purposes and power noise filtering. This merging eliminates the need for separate buffer cells and decoupling capacitors, satisfying design constraints without increasing physical size.
Solution Approach 2:
Circuit elements are designed with universal functionality. The same buffer cell structure provides both signal delay/timing control and power supply decoupling. Logic gates perform both logical operations and serve as inherent decoupling elements. This multi-functionality allows the circuit to meet timing constraints and power noise constraints simultaneously without adding dedicated components for each function.
2Reliability
If design constraints are satisfied by adding buffer cells or decoupling capacitors, then reliability is improved, but power consumption increases
Solution Approach 1:
The patent merges the functions of buffer cells and decoupling capacitors into single circuit elements. The buffer cell structures inherently provide decoupling functionality, eliminating the need for separate power-consuming decoupling capacitors. This reduction in component count directly reduces overall power consumption while maintaining reliability.
Solution Approach 2:
Circuit elements perform multiple functions simultaneously. Buffer cells provide both signal timing and power noise filtering. Logic gates perform computation and serve as decoupling elements. This universality reduces the total number of active components, thereby reducing cumulative power consumption while satisfying both timing and power constraints.
3Productivity
If integration density increases, then productivity is improved, but the possibility of violating design constraints increases
Solution Approach 1:
The patent integrates multiple constraint-satisfaction functions into single elements. Buffer cells simultaneously handle timing constraints and power noise constraints. This merging allows high integration density without proportionally increasing the risk of constraint violations, as each element addresses multiple constraints concurrently rather than requiring separate elements for each constraint.
Solution Approach 2:
Circuit elements are designed with universal functionality to address multiple design constraints simultaneously. Logic gates and buffer cells serve both their primary computational/timing functions and act as inherent decoupling elements for power noise filtering. This multi-functionality enables higher integration density while maintaining reliability, as fewer additional components are needed to satisfy constraints in dense configurations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method enables integrated circuits to meet design constraints without increasing physical size or power consumption, ensuring reliable and efficient operation while maintaining integration density.
Implementation Method 1
the third active region is disposed under the dummy gate line, such that the combination of the dummy gate line and the third active region constitutes a decoupling capacitor within the integrated circuit
Data Source
AI summary
A computer-implemented method for designing an integrated circuit includes: performing a simulation on input data or an initial layout to determine whether or not a design constraint has been violated. Upon determining that the design constraint has been violated, a redesign layout is created by adding a cutting area without changing a size of the integrated circuit. The adding a cutting area separates at least one of an active region and a gate line. At least one of the initial layout and the redesign layout is stored in a non-transitory computer readable storage medium.