Transistor Layout Routing With Heuristic Pattern Optimization

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Solution Overview

Problem

The manual placement and routing of transistors in circuit design is labor-intensive and prone to variations due to process mismatches and parasitic capacitance, leading to increased layout area and complexity, especially in analog circuits.

Innovation Solution

A method for automating optimal placement and routing of transistors using electrical connection information and parameters, involving heuristic-based pattern optimization and prioritization, to minimize layout area and optimize routing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual placement and routing of transistors is performed, then designer experience and flexibility are utilized, but labor intensity increases and layout area expands

Engineering Contradiction:

Improvedesigner flexibilityVSAvoidlabor intensity

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The system performs automatic placement and routing of transistors without requiring manual intervention. The automated algorithm independently completes the layout generation process, eliminating the need for designer expertise while reducing labor intensity and layout area.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical layout operations with an automated computational system. The algorithm processes transistor connections and generates optimal placements automatically, substituting human expertise with computational intelligence.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If manual routing is performed, then routing optimization can be achieved, but layout area increases and parasitic capacitance increases

Engineering Contradiction:

Improverouting optimizationVSAvoidlayout area

Core Design Contradiction:

Device complexityVSArea of stationary object

Solution Approach 1:

The system optimizes routing by dynamically adjusting connection parameters such as wire length, routing path, and transistor positioning. The algorithm modifies these parameters to minimize layout area while maintaining optimal electrical connections and reducing parasitic capacitance.

Inventive Principle:

Principle #35Parameter changes

3Manufacturing precision

If common centroid layout is applied to capacitors, then process-induced mismatches are reduced, but metal line area increases and parasitic capacitance increases

Engineering Contradiction:

Improveprocess-induced mismatchesVSAvoidmetal line area

Core Design Contradiction:

Manufacturing precisionVSArea of stationary object

Solution Approach 1:

The patent applies different layout strategies to different circuit elements. While capacitors use common centroid layout for precision, the overall routing optimization minimizes metal line area. The system locally optimizes capacitor placement while globally optimizing the entire layout to reduce parasitic capacitance.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250378255A1Method for optimal placement and routing of transistors

Publication Date: 2025.12.11 SK HYNIX INC

AI summary

Disclosed is a method for automating optimal placement and routing of transistors, in which in order to minimize a layout area, diversify a layout structure, and achieve routing optimization, electrical connection information of transistors constituting a circuit and parameters of the transistors are used to primarily place the transistors, heuristic-based pattern optimization and priority are determined, and then the transistors are placed and routed in an optimized state according to the above determination.