A Low-Power Single-Input Level Shifter for Oxide Thin-Film Transistors

Author

Sang Yeon Kim ; Joon Dong Kim ; Yeon Kyung Kim ; Hong Kyun Lym ; Jin Tae Kim ; Hwan Sool Oh ; Jae Eun Pi ; Min Ki Ryu ; Chi Sun Hwang ; Sang-Hee Ko Park ; Byoung Gon Yu ; Kee Chan Park

Author_Institution

Dept. of Electron. Eng., Konkuk Univ., Seoul, South Korea

Volume

9

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

71

Lastpage

73

Abstract

A new level shifter circuit suitable for implementation using n-channel oxide thin-film transistors (TFTs) is reported. This level shifter is designed to convert a single 10 V input signal into a 20 V output signal. In order to raise the output voltage up to V_DD in spite of the large zero- V_GS current of the oxide TFT, negative V_GS is applied to the pull-down TFTs. Simulation and fabrication results show that the level shifter operates correctly with oxide TFTs and that the power consumption is as low as 0.2 mW at an input signal frequency of 10 kHz.

Keywords

thin film transistors; frequency 10 kHz; input signal frequency; level shifter circuit; low-power single-input level shifter; n-channel oxide thin-film transistors; output voltage; oxide TFT; power consumption; Capacitance; Capacitors; Power demand; Simulation; System-on-a-chip; Thin film transistors; Level shifter; low-power; negative threshold voltage; oxide thin-film transistor (TFT);

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2012.2237159

Filename

6418055