Multiple-input NAND cirucit using polycrystalline silicon thin-film transistors and set-reset flip-flop circuit using the NAND circuits

We have evaluated multiple-input NAND circuits using polycrystalline silicon thin-film transistors and found that the output pulse became degraded for the 3-input NAND circuit. Moreover, we have fabricated a set-reset flip-flop (SR-FF) circuit using the 2-input NAND circuits and confirmed that the SR-FF circuit operated correctly.