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2014•Journal of Display TechnologyRequires access

An a-InGaZnO TFT Pixel Circuit Compensating Threshold Voltage and Mobility Variations in AMOLEDs

Yongchan Kim, Jerzy Kanicki, Hojin Lee

Open publisher page 28 citations

Abstract

In this paper, we proposed a novel voltage-programmed pixel circuit based on amorphous indium gallium zinc-oxide thin-film transistor (a-InGaZnO TFT) for active-matrix organic light-emitting display (AMOLED) with an enhanced electrical stability and uniformity. Through an extensive simulation work based on a-InGaZnO TFT and OLED experimental data, we confirm that the proposed pixel circuit can compensate for both mobility variation and threshold voltage shift of the driving TFT.

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What this paper is about

In this paper, we proposed a novel voltage-programmed pixel circuit based on amorphous indium gallium zinc-oxide thin-film transistor (a-InGaZnO TFT) for active-matrix organic light-emitting display (AMOLED) with an enhanced electrical stability and uniformity. Through an extensive simulation work based on a-InGaZnO TFT and OLED experimental data, we confirm that the proposed pixel circuit can compensate for both mobility variation and threshold voltage shift of the driving TFT.

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OpenAlex reports 28 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

In this paper, we proposed a novel voltage-programmed pixel circuit based on amorphous indium gallium zinc-oxide thin-film transistor (a-InGaZnO TFT) for active-matrix organic light-emitting display (AMOLED) with an enhanced electrical stability and uniformity. Through an extensive simulation work based on a-InGaZnO TFT and OLED experimental data, we confirm that the proposed pixel circuit can compensate for both mobility variation and threshold voltage shift of the driving TFT.

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

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An a-InGaZnO TFT Pixel Circuit Compensating Threshold Voltage and Mobility Variations in AMOLEDs — Research Paper | ScholarLens