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Design of compensation pixel circuit with In-Zn-O thin film transistor for active-matrix organic light-emitting diode 3D display

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Abstract

This paper presents a new compensation pixel circuit suitable for active-matrix organic light-emitting diode (AMOLED) stereoscopic three dimensional (3D) displays with shutter glasses. The simultaneous emission method was used to solve the crosstalk problem, in which the periods of initialization and threshold voltage detection occur for each pixel of whole panel simultaneously. Furthermore, there was no need of the periods of initialization and threshold voltage detection from the second frame beginning by employing threshold voltage one-time detection method. The non-uniformity of the proposed pixel circuit was considerably low with an average value of 8.6% measured from 20 discrete proposed pixel circuits integrated by In-Zn-O thin film transistors (IZO TFTs). It was shown that the OLED current almost remains constant for the number of frames up to 70 even the threshold voltage detection period only exists in the first frame.

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Acknowledgements

This work was supported in part by the National Key Basic Research and Development Program of China (973 Program, No. 2015CB655004) founded by Ministry of Science and Technology, in part by the National Natural Science Foundation of China (Grant Nos. 61574062, 61574061 and 61204089), in part by Science and Technology Program of Guangdong Province (Nos. 2015B090914003, 2015B090915001, 2014B090916002 and 2014B090915004).

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Correspondence to Weijing Wu.

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Xiao Hu received the B.Sc. degree in Material Science and Technology in 2013 from Wuhan University of Technology, Wuhan, China. And now, she is a master student major in optoelectronic materials, South China University of Technology. Her current research interests include the preparation of OLED and metal oxide thin-film transistors.

Xingheng Xia obtained Bachelor of Engineering Science from South China University of Technology, Guangzhou, China, in 2013. And now, he is a master student major in Electronic Materials and Devices at State Key Laboratory of Luminescent Materials and Devices, South China University of Technology. His current research interests include thin film transistors and AMOLED displays.

Lei Zhou received the B.Sc. degree in Microelectronics in 2010 and the M.Sc. degree in Microelectronics and Solid-State Electronics in 2013 from South China University of Technology, Guangzhou, China. In 2013, he joined Guangzhou New Vision Opto-Electronic Technology Co. Ltd., where he worked on AMOLED display panel design. His research interests include pixel design, ESD design and touch sensor based on metal oxide thin-film transistors.

Lirong Zhang received the B.Sc. degree in Electronic Science and Technology in 2010 from Guangdong University of Technology, Guangzhou, China, and the M.Sc. degree in Integrated Circuit Engineering in 2013 from South China University of Technology, Guangzhou, China. In 2013, he joined Guangzhou New Vision Opto-Electronic Technology Co. Ltd., Guangzhou. His research interests include TFT integrated circuit and TFT application.

Weijing Wu received the Ph.D. degree from South China University of Technology, Guangzhou, China, in 2008. In 2008, he joined the Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, China. He is now an associate professor in the State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China. His current research interests include thin film transistors and AMOLED displays.

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Hu, X., Xia, X., Zhou, L. et al. Design of compensation pixel circuit with In-Zn-O thin film transistor for active-matrix organic light-emitting diode 3D display. Front. Optoelectron. 10, 45–50 (2017). https://doi.org/10.1007/s12200-016-0562-y

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