Abstract
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.
© 2014 IEEE
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