Title :
Fully Gravure-Printed Flexible Full Adder Using SWNT-Based TFTs
Author :
Noh, Jinsoo ; Jung, Kyunghwan ; Kim, Joonseok ; Kim, Sungho ; Cho, Sungho ; Cho, Gyoujin
Author_Institution :
Printed Electron. Res. Inst., Paru Co. Ltd., Sunchon, South Korea
Abstract :
A single-walled carbon nanotube (SWNT)-based 1-b full-adder circuit was realized on flexible plastic substrates through an all gravure printing process by minimizing intertransistor process variation and leakage current between crossing interconnects. The circuit comprised 27 printed SWNT thin-film transistors, with a variation of up to only ±25% in electrical characteristics among them. Furthermore, the circuit showed a maximum propagation delay of 13.7 ms, with a 50-Hz input signal, and a supply voltage of -20 V. The process could be used for low-cost flexible arithmetic logic units in a variety of applications.
Keywords :
adders; carbon nanotubes; flexible electronics; leakage currents; logic circuits; plastics; printed circuits; printing; thin film transistors; SWNT-based TFT; flexible plastic substrate; frequency 50 Hz; fully gravure-printed flexible full adder circuit; gravure printing process; intertransistor process variation minimization; leakage current; low-cost flexible arithmetic logic unit; maximum propagation delay; printed SWNT thin-film transistor; single-walled carbon nanotube; time 13.7 ms; voltage -20 V; Adders; Carbon nanotubes; Flexible electronics; Integrated circuit interconnections; Leakage current; Logic gates; Thin film transistors; Carbon nanotube thin-film transistor (TFT); flexible electronics; full adder; gravure; printed logic gates; process variation;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2012.2214757
