525017.fig.004a
(a)
525017.fig.004b
(b)
Figure 4: (a) Optical microscope image of a 2-input NAND gate fabricated using nc-Si TFTs. (b) Circuit diagram of the NAND, AND, NOR, and OR logic gates. The AND and OR gates are built by adding an inverter at the out of the NAND and NOR gates, respectively.