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

Volume

33

Issue

11

fYear

2012

Firstpage

1574

Lastpage

1576

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;

fLanguage

English

Journal_Title

Electron Device Letters, IEEE

Publisher

ieee

ISSN

0741-3106

Type

jour

DOI

10.1109/LED.2012.2214757

Filename

6319345