A new method for series resistance extraction in poly-Si thin-film transistors

A new method for extraction of series resistance is proposed for poly-Si thin-film transistors. In this method, the extraction procedure is insensitive to the variation in effective channel length and device mobility, since both quantities are included in a single extracted parameter. The method has been successfully applied to a group of poly-Si TFTs with mask channel length from 2 to 30µm. Compared with the estimated series resistance, the extracted result is reasonable.