ESD Validation for Integrated Circuits Using Parameterized Circuit Data
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Solution Overview
Problem
Integrated circuits are increasingly sensitive to electrostatic discharges due to reduced chip sizes and insulation thickness, leading to potential damage and increased development costs, with existing ESD simulation methods being complex, time-consuming, and requiring extensive validation efforts.
Innovation Solution
A method and system for early ESD validation during the design phase using parameterized data and algorithms to identify potential ESD weak spots in integrated circuits, allowing for automated analysis of ESD behavior without the need for complex simulations, by analyzing key parameters of circuit components and their connections, and simulating ESD discharge paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If integrated circuits are scaled down to reduce chip floor space, then device integration increases, but sensitivity to electrostatic discharge damage increases
Solution Approach 1:
The patent performs ESD validation during the circuit design phase before physical layout is created. By using parameterized circuit data and algorithms to analyze ESD behavior early in the design process, potential ESD weak spots are identified and can be corrected before fabrication, preventing sensitivity issues from developing in scaled-down circuits
2Length of moving object
If insulation layer thickness is reduced to preserve transistor controllability at reduced dimensions, then device area decreases, but voltage withstand capability decreases
Solution Approach 1:
The system analyzes ESD discharge paths and calculates voltage stress on insulation layers during the design phase using parameterized data. By identifying circuits with insufficient voltage withstand capability before fabrication, designers can modify the circuit architecture or add protection structures to prevent insulation breakdown in scaled-down devices
3Measurement precision
If complex ESD simulation methods are used to validate circuit behavior, then measurement precision improves, but productivity decreases
Solution Approach 1:
The patent extracts only the essential ESD-relevant parameters from circuit data and uses specialized algorithms to analyze ESD discharge paths. This selective approach focuses computational resources on critical ESD behavior rather than performing comprehensive simulations of all circuit operations, achieving adequate validation accuracy with significantly reduced computation time
Solution Approach 2:
The system uses parameterized data to represent circuit components and their ESD characteristics. By working with simplified parameter models rather than full physical simulations, the system achieves sufficient ESD behavior prediction accuracy while dramatically reducing computational complexity and validation time
Data Source
AI summary
A system and a method for testing the ESD behavior, wherein a circuit (7) is automatically tested at circuit diagram level in that technology-specific ESD data is provided in database (2) for each circuit component present in the circuit, without requiring complex circuit simulations, for example based on front end or back end data, by taking into account the layout.