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基于金属氧化物薄膜晶体管的高速行集成驱动电路

张立荣 马雪雪 王春阜 李冠明 夏兴衡 罗东向 吴为敬 徐苗 王磊 彭俊彪

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基于金属氧化物薄膜晶体管的高速行集成驱动电路

张立荣, 马雪雪, 王春阜, 李冠明, 夏兴衡, 罗东向, 吴为敬, 徐苗, 王磊, 彭俊彪

High speed gate driver circuit basd on metal oxide thin film transistors

Zhang Li-Rong, Ma Xue-Xue, Wang Chun-Fu, Li Guan-Ming, Xia Xing-Heng, Luo Dong-Xiang, Wu Wei-Jing, Xu Miao, Wang Lei, Peng Jun-Biao
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  • 本文提出了一种基于非晶铟锌氧化物薄膜晶体管的高速行集成驱动电路, 该电路采用输入级复用的驱动结构, 一级输入级驱动三级输出级, 不仅减少电路输入级2/3晶体管的数量, 实现AMOLED或AMLCD显示屏的窄边框显示, 而且输入级的工作频率是输出级的1/3, 该结构适用于高速驱动电路. 电路内部产生了三次电容耦合效应, 每一次电容耦合效应都可以提高相应节点的电压, 保证了信号完整传输. 输出级采用了一个二极管接法的薄膜晶体管, 该薄膜晶体管连接了输出级的控制信号和上拉薄膜晶体管的栅极, 利用的每一级输出级输出时所产生的电容耦合效应, 增加上拉薄膜晶体管的栅极电压, 有效地提高电路输出能力和工作速度. 仿真表明电路能够输出脉宽达到4 s速度. 最后成功的制作了10级行集成驱动电路, 包括10级输入级电路和30级输出级电路, 负载为10 k和110 pF, 实验结果验证, 该电路满足4 k8 k 显示屏在120 Hz刷新频率下的驱动需求.
    This paper presents a new high speed gate driver circuit driven by In-Zn-O thin film transistors. Two methods are employed to improve the speed of this dirver: First, the input stage multiplex structure is adopted, one input stage drives three output stages; this could reduce the quantity of thin film transistors and also could achieve the narrow bezels in the AMOLED or AMLCD displays. Even the work frequency of the input stage becomes 1/3 of the output stage. When the speed of the circuit increass, there is enough time for input stage charging and discharging. So this kind of driver is suitable for high speed driving method. Second, three times the capacitance coupled effect generated in the gate driver can pull up the voltage level of the key nodes in the circuit, ensuring the signal integrity, While the first time the effect generated in the input stage is to reduce the charge time of the cascade signal and improve the speed of input stage. The second time that generated between input stage and output stage contrbutes to the integrity of cascade ouput signal and output control signal. A diode-connected thin film transistor applied to connect the output control signal and the gate of pull-up thin film transistors in output stage generates the three time capacitance coupled effects. Since the capacitance coupled effect can pull up the gate voltage of the pull-up thin film transistors during output period, the driving ability of the pull-up thin film transistors and the working speed could be promoted effectively. Simulation result shows that the capacitance coupled effect of each key node can pull up the voltage level considerably and the gate driver can normally work at the speed of 4 s. Finally, ten stage gate driver circuits have been fabricated successfully including ten input stages and thirty output stages. The test result shows that the proposed gate driver could work normally with a load of R=5 k and C=100 pF. Furthermore, the high speed test result shows that the output signal pulse width of the circuit is 2 s meeting the driving demands of the 4 k8 k display at the frame rate of 120 Hz. The power consumption of the gate dirver circuit is measured in different resolutions under the frame frequencies of 60 and 120 Hz respectively.
      通信作者: 吴为敬, wuwj@scut.edu.cn
    • 基金项目: 国家重点基础研究发展计划(973计划)(批准号: 2015CB6500)、国家自然科学基金(批准号: 61204089)、广东省自然科学基金(批准号: S2012010008648, 2014A030310253)、广东省科技厅科技计划项目(批准号: 2013B090500015)、广州市珠江科技新星项目(批准号: 201506010015)、中国博士后科学基金(批准号: 2015M572313)和中央高校基本科研业务费(批准号: 2015ZM072, 2015ZM070) 资助的课题.
      Corresponding author: Wu Wei-Jing, wuwj@scut.edu.cn
    • Funds: Project supported by the National Basic Research Program of China(Grant No. 2015CB6500), the National Natural Science Foundation of China (Grant No. 61204089), the Guangdong Natural Science Foundation, China (Grant Nos. S2012010008648, 2014A030310253), the Guangdong Province (Institute) Research Project, China (Grant No. 2013B090500015), the Pearl River ST Nova Program of Guangzhou, China (Grant No. 201506010015), the China Postdoctoral Science Foundation (Grant No. 2015M572313), and the Fundamental Research Funds for the Central Universities, China (Grant Nos. 2015ZM072, 2015ZM070).
    [1]

    Liu B Q, Lan L F, Zou J H, Peng J B 2013 Acta Phys. Sin. 62 087302 (in Chinese) [刘佰全, 兰林锋, 邹建华, 彭俊彪 2013 物理学报 62 087302]

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    Liu B Q, Tao H, Su Y J, Gao D Y, Lan L F, Zou J H, Peng J B 2013 Chin. Phys. B 22 077303

    [3]

    Liu Y, Wu W J, Li B, SI Y F, Wang L, Liu Y R 2014 Acta Phys. Sin. 63 098503 (in Chinese) [刘远, 吴为敬, 李斌, 思云飞, 王磊, 刘玉荣 2014 物理学报 63 098503]

    [4]

    Cao Y,Tao H,Zou J H, Xu M, Lan L F, Wang L,Peng J B 2012 Journal of South China University of Technology 40 1 (in Chinese) [曹镛, 陶洪, 邹建华, 徐苗, 兰林锋, 王磊, 彭俊彪 2012 华南理工大学学报(自然科学版) 40 1]

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    Lan L, Xiong N, Xiao P, Li M, Xu H, Yao R, Wen S, Peng J 2013 Appl. Phys Lett. 102 242102

    [6]

    Xu H, Lan L F, Li M, Luo D X, Xiao P, Lin Z G, Ning H L, Peng J B 2014 Acta Phys. Sin. 63 038501 (in Chinese) [徐华, 兰林锋, 李民, 罗东向, 肖鹏, 林振国, 宁洪龙, 彭俊彪 2014 物理学报 63 038501]

    [7]

    Zhou L, Xu M, Wu W J, Xia X H, Wang L, Peng J B 2015 Chinese Journal of Luminescence 36 577 (in Chinese) [周雷, 徐苗, 吴为敬, 夏兴衡, 王磊, 彭俊彪 2015 发光学报 36 577]

    [8]

    Chih L L, Chun D T, Min C C, Jian S Y 2011 Journal of Display Technology 7 10

    [9]

    Jae E P, Min K R, Chi S H, Shin H Y, Sang H K P, Sung M Y, Hong K L, Youn K K, Joon D K, Hwan S O, Kee C P 2012 Electron Device Letters 33 1144

    [10]

    Arokia N, Anil K, Kapil S, Peyman S, Sanjiv S, Denis S 2004 Journal of Solid-State Circuit 39 1477

    [11]

    Lee Y W, Kim S J, Lee S Y, Lee W G, Yoon K S, Park J W, Kwon J Y, Han M K 2012 Electrochemical and Solid-State Letters 15 H126

    [12]

    Binn K, Seung C C, Jeong S L, Sun J K, Yong H J, Soo Y Y, Chang D K, Min K H 2011 Transations On Electron Devices 58 3012

    [13]

    Wu W J, Li G M, Xia X H, Zhang L R, Zhou L, Xu M 2014 Journal Of Display Technology 10 523

    [14]

    Wu W J, Song X F, Zhang L R, Zhou L, Xu M, Wang L, Peng J B Transations On Electron Devices 61 3335

    [15]

    Binn K, Lee Y U, Han M K, Seung C C, Yong H J, Park K S, Kim C D 2011 Society for Information Display 27 1191

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    Li M, Lan L F, Xu M, Luo D X, Xiao P, Peng J B 2014 Solid State Electron 91 9

    [17]

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  • [1]

    Liu B Q, Lan L F, Zou J H, Peng J B 2013 Acta Phys. Sin. 62 087302 (in Chinese) [刘佰全, 兰林锋, 邹建华, 彭俊彪 2013 物理学报 62 087302]

    [2]

    Liu B Q, Tao H, Su Y J, Gao D Y, Lan L F, Zou J H, Peng J B 2013 Chin. Phys. B 22 077303

    [3]

    Liu Y, Wu W J, Li B, SI Y F, Wang L, Liu Y R 2014 Acta Phys. Sin. 63 098503 (in Chinese) [刘远, 吴为敬, 李斌, 思云飞, 王磊, 刘玉荣 2014 物理学报 63 098503]

    [4]

    Cao Y,Tao H,Zou J H, Xu M, Lan L F, Wang L,Peng J B 2012 Journal of South China University of Technology 40 1 (in Chinese) [曹镛, 陶洪, 邹建华, 徐苗, 兰林锋, 王磊, 彭俊彪 2012 华南理工大学学报(自然科学版) 40 1]

    [5]

    Lan L, Xiong N, Xiao P, Li M, Xu H, Yao R, Wen S, Peng J 2013 Appl. Phys Lett. 102 242102

    [6]

    Xu H, Lan L F, Li M, Luo D X, Xiao P, Lin Z G, Ning H L, Peng J B 2014 Acta Phys. Sin. 63 038501 (in Chinese) [徐华, 兰林锋, 李民, 罗东向, 肖鹏, 林振国, 宁洪龙, 彭俊彪 2014 物理学报 63 038501]

    [7]

    Zhou L, Xu M, Wu W J, Xia X H, Wang L, Peng J B 2015 Chinese Journal of Luminescence 36 577 (in Chinese) [周雷, 徐苗, 吴为敬, 夏兴衡, 王磊, 彭俊彪 2015 发光学报 36 577]

    [8]

    Chih L L, Chun D T, Min C C, Jian S Y 2011 Journal of Display Technology 7 10

    [9]

    Jae E P, Min K R, Chi S H, Shin H Y, Sang H K P, Sung M Y, Hong K L, Youn K K, Joon D K, Hwan S O, Kee C P 2012 Electron Device Letters 33 1144

    [10]

    Arokia N, Anil K, Kapil S, Peyman S, Sanjiv S, Denis S 2004 Journal of Solid-State Circuit 39 1477

    [11]

    Lee Y W, Kim S J, Lee S Y, Lee W G, Yoon K S, Park J W, Kwon J Y, Han M K 2012 Electrochemical and Solid-State Letters 15 H126

    [12]

    Binn K, Seung C C, Jeong S L, Sun J K, Yong H J, Soo Y Y, Chang D K, Min K H 2011 Transations On Electron Devices 58 3012

    [13]

    Wu W J, Li G M, Xia X H, Zhang L R, Zhou L, Xu M 2014 Journal Of Display Technology 10 523

    [14]

    Wu W J, Song X F, Zhang L R, Zhou L, Xu M, Wang L, Peng J B Transations On Electron Devices 61 3335

    [15]

    Binn K, Lee Y U, Han M K, Seung C C, Yong H J, Park K S, Kim C D 2011 Society for Information Display 27 1191

    [16]

    Li M, Lan L F, Xu M, Luo D X, Xiao P, Peng J B 2014 Solid State Electron 91 9

    [17]

    Di G, Dong H K, Man J S, Mallory M, Jin J 2012 Society for Information Display 3 38

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出版历程
  • 收稿日期:  2015-07-20
  • 修回日期:  2015-10-06
  • 刊出日期:  2016-01-20

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