Paper
9 March 2023 A novel a-IGZO TFT pixel circuit for flexible AMOLED displays with narrow bezel
Hua Li, Xi Xiao, Yao Wei, Guangyao Li, Liuqi Zhang, Baixiang Han, Xin Zhang, Shengdong Zhang
Author Affiliations +
Proceedings Volume 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022); 1260013 (2023) https://doi.org/10.1117/12.2674106
Event: 2022 International Conference on Optoelectronic Materials and Devices, 2022, Chongqing, China
Abstract
In this paper, we present a novel pixel structure with internal compensation function for a-IGZO TFTs OLED displays. Because of pixel circuit need more than two gate signals, the global luminous driver scheme was carried out though turning the pixels’ gate signals, except for scan signal, are provided by source IC instead of GOA circuit. A simple GOA circuit was used to provide the scan signal for data writing just 2 mm layout length. Due to the gate signals of INI and REF are provided by source IC, and required to open all pixels in the whole panel at the same time, the driving loading of INI and REF signals are too large to maintain the high brightness uniformity. Experiment results shown that the brightness uniformity of OLED displays can up to 84% by lowering the VGH voltage of INI and REF with weak feedthrough effect.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hua Li, Xi Xiao, Yao Wei, Guangyao Li, Liuqi Zhang, Baixiang Han, Xin Zhang, and Shengdong Zhang "A novel a-IGZO TFT pixel circuit for flexible AMOLED displays with narrow bezel", Proc. SPIE 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022), 1260013 (9 March 2023); https://doi.org/10.1117/12.2674106
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KEYWORDS
Organic light emitting diodes

Circuit switching

Flexible displays

Capacitors

Flexible circuits

Plasma enhanced chemical vapor deposition

Pulse signals

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