An a-IGZO TFT Pixel Circuit to Compensate Electrical Characteristics Variation and OLED Degradation
Authors: 
Bo Yu, Huicheng Zhao, Ning Wei, Hongzhen Chu, Yuehua Li, Xinlin Wang, Hongyu HeAuthors Info & Claims
Pages 18 - 23
Abstract
A voltage-programmed pixel circuit is presented for active-matrix organic light-emitting diode (AMOLED) displays. The circuit contains seven amorphous indium gallium zinc oxide (a-IGZO) thin film transistors (TFTs) and one capacitor. In the compensation stage, the circuit extracts the threshold voltages of the driving TFT and OLED, and obtains a mobility dependent discharge voltage. The circuit requires only one capacitor to compensate for variations of the electrical characteristics of the driving TFT, i.e. variations of threshold voltage and mobility, and the degradation of the OLED. The circuit simulation results show that the relative current error rates are below 5.70% for threshold voltage variations of ±0.5V, below 5.66% for mobility variations of ±30%.
References
[1]
Aditya Sodhani, Kavindra Kandpal. 2020. Design of threshold voltage insensitive pixel driver circuitry using a-IGZO TFT for AMOLED displays. Microelectron. J. 101 (May 2020), 104819. https://dx.doi.org/10.1016/j.mejo.2020.104819
[2]
Tze-Ching Fung, Katsumi Abe, Hideya Kumomi, and Jerzy Kanicki. 2009. Electrical instability of RF sputter amorphous In-Ga-Zn-O thin-film transistors. J. Display Technology 5,12 (December 2009), 452-461. https://doi.org/10.1109/JDT.2009.2020611
[3]
Young-Ju Park, Myoung-Hoon Jung, Sang-Ho Park, and Ohyun Kim. 2010. Voltage-programming-based pixel circuit to compensate for threshold voltage and mobility using natural capacitance of organic light-emitting diode. Japan. J. Appl. Phys. 49, 3S (March 2010), 03CD01. https://doi.org/10.1143/JJAP.49.03CD01
[4]
Ching-Lin Fan, Yi-Chiung Chen, Chuang-Cheng Yang, Yung-Kun Tsai, and Bohr-Ran Huang. 2016. Novel LTPS-TFT pixel circuit with OLED luminance compensation for 3D AMOLED displays. J. Display Technol. 12, 5 (May 2016), 425-428. https://dx.doi.org/10.1109/JDT.2016.2525736
[5]
Yongtao Zeng, Hongzhen Chu, Ning Wei, Yuehua Li, Xinlin Wang, and Hongyu He. 2021. A 5T1C pixel circuit compensating mobility and threshold voltage variation. Microelectron. J. 117 (September 2021), 105283. https://doi.org/10.1016/j.mejo.2021.105283
[6]
Chih-Lung Lin, Po-Syun Chen, Po-Chun Lai, Ting-Ching Chu, Ming-Xun Wang, and Chia-Lun Lee. 2016. Novel pixel circuit with compensation for normally-off/on a-IGZO TFTs and OLED luminance degradation. J. Display Technol. 12, 12 (December 2016), 1664-1667. https://doi.org/10.1109/JDT.2016.2615658
[7]
Chih-Lung Lin, Yen-Ting Liu, Ching-En Lee, Po-Syun Chen, Ting-Ching Chu, and Chia-Che Hung. 2015. a-InGaZnO active-matrix organic LED pixel periodically detecting thin-film transistor threshold voltage once for multiple frames. IEEE Electron Device Lett. 36, 11 (November 2015), 1166-1168. https://doi.org/10.1109/LED.2015.2480861
[8]
Chih-Lung Lin, Po-Chun Lai, Po-Cheng Lai, Po-Syun Chen, Wan-Lin Wu. 2016. Pixel circuit with parallel driving scheme for compensating luminance variation based on a-IGZO TFT for AMOLED displays. J. Display Technol. 12, 12 (December 2016), 1681-1687. https://doi.org/10.1109/JDT.2016.2616507
Index Terms
- An a-IGZO TFT Pixel Circuit to Compensate Electrical Characteristics Variation and OLED Degradation
Recommendations
A 6T2C Pixel Circuit Compensating for TFT Electrical Characteristics Variations, Voltage Drop, and OLED Degradation
EITCE '23: Proceedings of the 2023 7th International Conference on Electronic Information Technology and Computer EngineeringA voltage-programmed pixel circuit is presented for active-matrix organic light-emitting diode (AMOLED) displays. The circuit is made up by six p-type low temperature poly-silicon (LTPS) thin-film transistors (TFTs) and two capacitors (6T2C). In the ...
A 6T1C pixel circuit compensating for TFT electrical characteristics variations, voltage drop, and OLED degradation
AbstractA voltage-programmed pixel circuit based on low-temperature poly-silicon (LTPS) thin-film transistors (TFTs) is presented for active-matrix organic light-emitting diode (AMOLED) displays. The circuit consists of six p-type transistors and one ...
Mirrored OLED pixel circuit for threshold voltage and mobility compensation with IGZO TFTs
In this paper, pixel circuit using mirroring structure with Indium-Gallium-Zinc oxide (IGZO) thin film transistors (TFTs) for active matrix organic light emitting diode (AMOLED) display is proposed. This pixel circuit consists of only four TFTs, and one ...
Comments
Please enable JavaScript to view thecomments powered by Disqus.Information & Contributors
Information
Published In
October 2023
1809 pages
ISBN:9798400708305
DOI:10.1145/3650400
Copyright © 2023 ACM.
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].
Publisher
Association for Computing Machinery
New York, NY, United States
Publication History
Published: 17 April 2024
Check for updates
Qualifiers
- Research-article
- Research
- Refereed limited
Conference
EITCE 2023
EITCE 2023: 2023 7th International Conference on Electronic Information Technology and Computer Engineering
October 20 - 22, 2023
Xiamen, China
Acceptance Rates
Overall Acceptance Rate 508 of 972 submissions, 52%
Contributors
Other Metrics
Bibliometrics & Citations
Bibliometrics
Article Metrics
- 0Total Citations
- 32Total Downloads
- Downloads (Last 12 months)32
- Downloads (Last 6 weeks)10
Reflects downloads up to 25 Nov 2024
Other Metrics
Citations
View Options
Login options
Check if you have access through your login credentials or your institution to get full access on this article.
Sign inFull Access
View options
View or Download as a PDF file.
PDFeReader
View online with eReader.
eReaderHTML Format
View this article in HTML Format.
HTML Format