A New Integrated Gate Driver with Shift Register Circuits Employing 4 Clocks for 14.1-inch TFT-LCD

This paper presents a kind of new integrated hydrogenated amorphous silicon thin film transistor (a-Si:H TFT) gate driver. A major feature of the integrated gate driver is that the gate driver is composed of the proposed novel shift registers employing 4 clocks. The shift of the threshold voltage of the amorphous silicon thin film transistors in the shift register can be decreased significantly, which makes the circuits work stably for a long term. The simulation results show that the driver circuits are able to have the rise and fall time to be less than 3.5 μs in the output waveforms, and the noise voltage to be less than 1 V.