| 一种基于低温多晶硅薄膜晶体管的交流AMOLED像素补偿电路 |
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| 引用本文： | 宋小锋,罗建国,周雷,张立荣,吴为敬,彭俊彪.一种基于低温多晶硅薄膜晶体管的交流AMOLED像素补偿电路[J].半导体学报,2013,34(12):125011-4. |
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| 作者姓名： | 宋小锋 罗建国 周雷 张立荣 吴为敬 彭俊彪 |
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| 基金项目： | 国家自然科学基金;省自然科学基金;广东省优秀博士学位论文作者资助项目 |
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| 摘 要： | This paper presents a new poly-Si pixel circuit employing AC driving mode for active matrix organic light-emitting diode （AMOLED） displays. The proposed pixel circuit, which consists of one driving thin-film tran- sistor （TFT）, three switching TFTs, and one storage capacitor, can effectively compensate for the threshold voltage variation in poly-Si and the OLED degradation. As there is no light emission, except for during the emitting period, and a small number of devices used in the proposed pixel circuit, a high contrast ratio and a high pixel aperture ratio can be easily achieved. Simulation results by SMART-SPICE software show that the non-uniformity of the OLED current for the proposed pixel circuit is significantly decreased （〈 10%） with an average value of 2.63%, while that of the conventional 2T1C is 103%. Thus the brightness uniformity of AMOLED displays can be improved by using the proposed pixel circuit.
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| 关 键 词： | OLED显示器 多晶硅TFT AMOLED 像素电路 驱动方式 补偿 交流 有机发光二极管 |
| 收稿时间： | 5/7/2013 12:00:00 AM |
A new poly-Si TFT compensation pixel circuit employing AC driving mode for AMOLED displays |
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| Song Xiaofeng,Luo Jianguo,Zhou Lei,Zhang Lirong,Wu Weijing and Peng Junbiao.A new poly-Si TFT compensation pixel circuit employing AC driving mode for AMOLED displays[J].Chinese Journal of Semiconductors,2013,34(12):125011-4. |
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| Authors: | Song Xiaofeng Luo Jianguo Zhou Lei Zhang Lirong Wu Weijing and Peng Junbiao |
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| Affiliation: | State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China;State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China;School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, China;School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, China;State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China;State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | This paper presents a new poly-Si pixel circuit employing AC driving mode for active matrix organic light-emitting diode (AMOLED) displays. The proposed pixel circuit, which consists of one driving thin-film transistor (TFT), three switching TFTs, and one storage capacitor, can effectively compensate for the threshold voltage variation in poly-Si and the OLED degradation. As there is no light emission, except for during the emitting period, and a small number of devices used in the proposed pixel circuit, a high contrast ratio and a high pixel aperture ratio can be easily achieved. Simulation results by SMART-SPICE software show that the non-uniformity of the OLED current for the proposed pixel circuit is significantly decreased (< 10%) with an average value of 2.63%, while that of the conventional 2T1C is 103%. Thus the brightness uniformity of AMOLED displays can be improved by using the proposed pixel circuit. |
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| Keywords: | poly-Si|TFT|AMOLED|AC mode |
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