2012•Unpublished venueRequires access

A novel 3-TFT AMOLED pixel driver for threshold voltage shift compensation

Mehdi Amiri, Ashkan Roshan Zamir, Saharnaz Shahin, Shahin Jafarabadi Ashtiani

Abstract

A new voltage-programmed pixel using amorphous silicon (a-Si) thin film transistors (TFTs) for active matrix organic light-emitting diodes (AMOLEDs) and its external driver is presented. The proposed pixel circuit is a 3- TFT structure with only 2 controlling signals. This pixel structure along with its driver compensates for the shift in TFTs threshold voltage and reduces current sensitivity of OLED to W/L of TFTs.

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Available abstract

Key concepts: AMOLED, Thin-film transistor, OLED, Active matrix, Materials science, Threshold voltage, Optoelectronics, Pixel