A low-power scan driver employing IZO TFTs including an AC–DC type output module

7‐3: A Low‐Power and High‐Stable TFT Gate Driver With a Novel Bootstrap Scheme

“…However, the dynamic power is inevitable as the drain of T2 is connected to a clock signal with the gate of T2 pulling down to VSS. This power consumption of charging and discharging G GD2 successively can be calculated as follows [4], [6]:…”

“…This novel design has a DC type output, but its performance is much better than the previous DC type output GOAs. We take the AC-DC type output design [4] for example. That design is also a DC type output design which is reported to achieve a good tradeoff between the power consumption and the rising time.…”

“…Figure 8. The 3 rd , 6 th , 9 th , 12 th and 15 th stage's simulation waveform of (a) the AC-DC type output GOA and (b) the novel GOA if applied to the application in [4]…”

“…Connecting power supply to the drain node of pull-up TFTs in output stage was used to reduce the power consumption [3], and this is called a DC type output design. The DC type output named AC-DC was proposed to achieve both low power and high speed [4]. An inverter was designed to limit the leakage current in a classic bootstrap structure [5], and it can be seen as an AC type output design.…”

“…No matter using DC or AC type output, these GOAs all employ the classic bootstrap method to generate an inner voltage or the output voltage [3][4][5]. Thus, they all suffer from the traditional drawbacks of bootstrap.…”