Low-Power Bi-Side Scan Driver Integrated by IZO TFTs Including a Clock-Controlled Inverter
Low-Power Bi-Side Scan Driver Integrated by IZO TFTs Including a Clock-Controlled Inverter
复制标题
DOI：
10.1109/jdt.2014.2321421
复制
发表时间：
2014-05
影响因子：
--
通讯作者：
Weijing Wu;Guan-Ming Li;Xing-Heng Xia;Li-Rong Zhang;Lei Zhou;Miao Xu;Lei Wang;Junbiao Peng
中科院分区：
文献类型：
--
作者：
Weijing Wu;Guan-Ming Li;Xing-Heng Xia;Li-Rong Zhang;Lei Zhou;Miao Xu;Lei Wang;Junbiao Peng
本文提出了一种低功耗的In-Zn-O薄膜晶体管（IZO TFT）扫描驱动器，该驱动器包括一个时钟控制的反相器，与传统的二极管连接的反相器相比，避免了直流路径。所谓双面扫描驱动器，是将像素阵列分成两部分，分别放置在面板的两侧，以驱动像素阵列的奇数行和偶数行。由于输出部分中的时钟的占空比小于内部部分中的时钟的占空比，因此仅需要一个大尺寸晶体管来对扫描线进行充电和放电，并且由于其在整个驱动阶段处于自举状态，因此放电速度比其他合并TFT方法快。实验结果表明，所提出的扫描驱动器的各级输出信号没有失真，并具有良好的噪声抑制特性。与传统的二极管连接逆变器相比，时钟控制逆变器的功耗可以显著降低。
This letter presents a low power In-Zn-O thin-film transistors (IZO TFTs) scan driver including a clock-controlled inverter to avoid the direct current path compared with the conventional diode-connected inverter. The so-called bi-side scan driver is divided into two parts, laying on the two sides of panel to drive the odd lines and the even lines of pixel arrays, respectively. Due to a smaller duty ratio of the clock in the output section than that of clocks in the inner section, only one large size transistor is required for both charging and discharging the scan line, and the discharging speed is faster than that of other merging TFT methods because it is at the bootstrapped state for the whole driving phase. Experimental results show that the output signal of each stage for the proposed scan driver has no distortion and exhibits good noise-suppressed characteristics. It is also verified that the power consumption of the clock-controlled inverter can be significantly reduced compared with the conventional diode-connected inverter.