Realization of an Energy-Efficient, Full-Swing Decoder with Unipolar TFT Technology

Realization of full-swing logic gates is a challenge using only one transistor type. Most such logic gates do not have full swing with excessive direct path leakage-current. Consequently, realization of multi-stage logic circuits becomes unrealistic. In this paper, we propose design of logic gates that do not suffer from these problems. As a proof of concept, we fabricated a 3-to-8 decoder with n-type only a-Si:H TFTs. Simulation and measurement results have demonstrated that the circuit could maintain unity stage-to-stage gain, while reduce more than 85% of static leakage current and 20% area when compared with other implementations.