Title :
Analysis of 2-TFTs AMOLED pixel circuit based on an on-current model of poly-Si TFTs
Author :
Jieyun Zhou ; Mingxiang Wang ; Dongli Zhang ; Meng Tang
Author_Institution :
Dept. of Microelectron., Soochow Univ., Suzhou, China
Abstract :
In this study, we present an analysis on the typical 2T1C pixel circuit for active-matrix organic light-emitting diode (AMOLED) displays based on an analytical on-current model for polycrystalline Si (poly-Si) thin film transistors (TFTs). We focus on the charging time for the storage capacitor and driving current for the OLED. The voltage variation caused by the charge injection and clock feedthrough effects is estimated. The analysis based on the analytical poly-Si models is more accurate than the conventional one based on the MOSFET model, and more explicit and flexible than by using a circuit simulator.
Keywords :
LED displays; driver circuits; organic light emitting diodes; silicon; thin film transistors; AMOLED pixel circuit; Si; active matrix organic light emitting diode displays; on-current model; polysilicon TFT; storage capacitor charging; thin film transistor; Organic light emitting diodes; Switches; AMOLED; charge injection; clock feedthrough; pixel circuit; poly-Si TFTs;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2014 IEEE International Conference on
DOI :
10.1109/EDSSC.2014.7061120
