New LTPS pixel circuit with AC driving method to reduce OLED degradation for 3D AMOLED displays

Chih Lung Lin; Chia Che Hung; Pin Yen Kuo; Mao Hsun Cheng

doi:10.1109/JDT.2012.2225017

New LTPS pixel circuit with AC driving method to reduce OLED degradation for 3D AMOLED displays

Chih Lung Lin, Chia Che Hung, Pin Yen Kuo, Mao Hsun Cheng

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

This work presents a new low-temperature polysilicon (LTPS) thin-film transistor pixel circuit with a novel driving scheme that is based on the simultaneous emission and reverse-biased methods. During high-speed 3D operation at 240 Hz, the proposed circuit can successfully compensate for the TFT threshold voltage variation and improve the IR drop in the power line. Simulation and experimental results confirm the stability of the OLED current and the amelioration of the OLED lifetime. Furthermore, over the entire range of data voltages, the nonuniformity of OLED current is less than 5%.

Original language	English
Article number	6353225
Pages (from-to)	681-683
Number of pages	3
Journal	IEEE/OSA Journal of Display Technology
Volume	8
Issue number	12
DOIs	https://doi.org/10.1109/JDT.2012.2225017
Publication status	Published - 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/JDT.2012.2225017

Cite this

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title = "New LTPS pixel circuit with AC driving method to reduce OLED degradation for 3D AMOLED displays",

abstract = "This work presents a new low-temperature polysilicon (LTPS) thin-film transistor pixel circuit with a novel driving scheme that is based on the simultaneous emission and reverse-biased methods. During high-speed 3D operation at 240 Hz, the proposed circuit can successfully compensate for the TFT threshold voltage variation and improve the IR drop in the power line. Simulation and experimental results confirm the stability of the OLED current and the amelioration of the OLED lifetime. Furthermore, over the entire range of data voltages, the nonuniformity of OLED current is less than 5%.",

author = "Lin, {Chih Lung} and Hung, {Chia Che} and Kuo, {Pin Yen} and Cheng, {Mao Hsun}",

note = "Funding Information: Manuscript received June 29, 2012; revised September 06, 2012; accepted September 24, 2012. Date of publication November 15, 2012; date of current version November 19, 2012. The work was supported by the Advanced Optoelectronic Technology Center, National Cheng Kung University, under projects from the Ministry of Education and by the National Science Council of Taiwan under NSC 101-2221-E-006-221-MY3.",

year = "2012",

doi = "10.1109/JDT.2012.2225017",

language = "English",

volume = "8",

pages = "681--683",

journal = "IEEE/OSA Journal of Display Technology",

issn = "1551-319X",

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T1 - New LTPS pixel circuit with AC driving method to reduce OLED degradation for 3D AMOLED displays

AU - Lin, Chih Lung

AU - Hung, Chia Che

AU - Kuo, Pin Yen

AU - Cheng, Mao Hsun

N1 - Funding Information: Manuscript received June 29, 2012; revised September 06, 2012; accepted September 24, 2012. Date of publication November 15, 2012; date of current version November 19, 2012. The work was supported by the Advanced Optoelectronic Technology Center, National Cheng Kung University, under projects from the Ministry of Education and by the National Science Council of Taiwan under NSC 101-2221-E-006-221-MY3.

PY - 2012

Y1 - 2012

N2 - This work presents a new low-temperature polysilicon (LTPS) thin-film transistor pixel circuit with a novel driving scheme that is based on the simultaneous emission and reverse-biased methods. During high-speed 3D operation at 240 Hz, the proposed circuit can successfully compensate for the TFT threshold voltage variation and improve the IR drop in the power line. Simulation and experimental results confirm the stability of the OLED current and the amelioration of the OLED lifetime. Furthermore, over the entire range of data voltages, the nonuniformity of OLED current is less than 5%.

AB - This work presents a new low-temperature polysilicon (LTPS) thin-film transistor pixel circuit with a novel driving scheme that is based on the simultaneous emission and reverse-biased methods. During high-speed 3D operation at 240 Hz, the proposed circuit can successfully compensate for the TFT threshold voltage variation and improve the IR drop in the power line. Simulation and experimental results confirm the stability of the OLED current and the amelioration of the OLED lifetime. Furthermore, over the entire range of data voltages, the nonuniformity of OLED current is less than 5%.

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New LTPS pixel circuit with AC driving method to reduce OLED degradation for 3D AMOLED displays

Abstract

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