一种TFT模拟仿真与计算方法

A Method of Simulation and Calculation of TFT

随着显示行业的发展,AMOLED技术成为目前的主流技术。其中的薄膜晶体管(TFT)成为AMOLED显示质量的主要影响因素,阈值电压作为TFT性能的主要特征参数之一,其提取和计算方法至关重要。论文利用ATLAS仿真工具进行TFT结构和特性的仿真,然后提取TFT仿真的转移特性曲线数据结果以及结合EXCEL工具计算出TFT阈值电压的值。其方法简单有效,计算过程直观,利于研究后期TFT的性能优化。

With the development of the display industry,AMOLED technology is mainstream technology.The Thin Film Transistor is the main influence factor of the AMOLED display quality,and the threshold voltage is one of the main characteristic parameters of the TFT performance,its extraction and calculation method is so important.This paper uses the ATLAS simulation tool to simulate TFT structure and characteristics,then extracts the final simulation data of the transfer characteristic curve and calculates the TFT threshold voltage combining with EXCEL tool.The calculation procedure of this method is simple and effective,intuitive and conducive to study late TFT performance optimization.