High Subthreshold Swing a-IGZO Driving TFTs for Low-Gray Level Uniformity in Active- Matrix OLED

Soobin An,Chanjin Park, Yumin Yun,Ji-Hwan Park, Tae-Hyoung Moon,Jiyong Noh,Kwon-Shik Park,Yong-Sang Kim,Soo-Yeon Lee

2023 30th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)（2023）

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摘要

A high subthreshold swing (SS) a-IGZO TFT is proposed to reduce the current error rate in pixel circuit at low-gray levels. A high SS can be obtained by carrier concentration profile control in a-IGZO channel width direction. The feasibility was checked using TCAD, and the performance of pixel circuit with high SS driving TFTs was evaluated using HSPICE.

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