Integrated 2T1C pixel circuit with a-Si TFT and NMOS for active matrix mini-LED displays

The 2T1C pixel driver circuit for mini-LED direct display has been proposed, which separates the switching transistor and the driver transistor from the same display substrate, replaces the driver transistor with n-metal oxide semiconductor (NMOS), and combines printed circuit board substrate and th...

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Published in:Semiconductor science and technology 2024-03, Vol.39 (3), p.35003
Main Authors: Zhong, Chenming, Li, Guangyao, Zheng, Xi, Zhu, Lihong, Zhuang, Jianbang, Lu, Yijun, Chen, Zhong, Guo, Weijie
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Language:English
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2T1C pixel circuit
a-Si TFT
displays
mini-LED
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container_issue 3
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container_title Semiconductor science and technology
container_volume 39
creator Zhong, Chenming
Li, Guangyao
Zheng, Xi
Zhu, Lihong
Zhuang, Jianbang
Lu, Yijun
Chen, Zhong
Guo, Weijie
description The 2T1C pixel driver circuit for mini-LED direct display has been proposed, which separates the switching transistor and the driver transistor from the same display substrate, replaces the driver transistor with n-metal oxide semiconductor (NMOS), and combines printed circuit board substrate and thin-film transistor (TFT) substrate to improve the driving capability of the circuit. The NMOS was soldered with mini-LEDs simultaneously onto a substrate which connects to the a-Si TFT array. Two driving modes for a 32-level gray-scale display panel were investigated to compare the voltage-current and optical characteristics. The results demonstrated that the drain-driving mode is better suited for high brightness and high-power display application scenarios as it supports higher-driven currents, but the source-driving mode is more appropriate for precision gray-scale applications due to the higher current linearity of the mode.
doi_str_mv 10.1088/1361-6641/ad238c
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subjects 2T1C pixel circuit
a-Si TFT
displays
mini-LED
title Integrated 2T1C pixel circuit with a-Si TFT and NMOS for active matrix mini-LED displays
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