一种快速获取场效应管寄生电阻的方法

By combining TCAD simulation with the conductivity integration method, the parasitic resistance of the field-effect transistor can be obtained quickly and accurately with only one simulation experiment, which solves the problems of high simulation resource consumption and low efficiency, and realizes efficient and accurate parasitic resistance analysis.

CN116911234BActive Publication Date: 2026-07-17SOUTHEAST UNIV +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Filing Date
2023-08-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies consume enormous computational resources in analyzing the parasitic resistance of field-effect transistors and struggle to obtain accurate results quickly and directly, especially at nanoscale process nodes, where traditional methods are inefficient and have strong limitations.

Method used

By combining TCAD simulation calculation with the conductivity integration method, the integrable and non-integrable regions are divided. The parasitic resistance of each part of the field-effect transistor is calculated by integrating the conductance of each region and the quantitative relationship. Accurate values ​​can be obtained with only one simulation experiment.

Benefits of technology

It significantly improves the efficiency of parasitic resistance analysis of field-effect transistors, with calculation results differing from traditional methods by no more than 5%. It is applicable to two-dimensional and three-dimensional field-effect transistors, and has a significant advantage for three-dimensional devices such as FinFETs.

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Abstract

本发明公开了一种快速获取场效应管寄生电阻的方法。通过TCAD仿真获得场效应管载流子浓度、迁移率、电流密度等参数,依据电流密度分布合理划分区域,分别计算各区域的电阻值,利用各区域电阻与总电阻的数量关系求解出场效应管各部分寄生电阻。该方法与传统的寄生电阻提取方法相比,能够在不牺牲精度的情况下成倍的节省扫描场效应管尺寸参数所需的仿真算力,直接获得场效应管各部分寄生电阻阻值以及与栅极电压、漏极电压等参数的关系,为场效应管寄生电阻的分析与求解提供更为快速、直接的方法。
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