Title :
New Depletion-Mode IGZO TFT Shift Register
Author :
Kim, Binn ; Ryoo, Chang-Il ; Kim, Sun-Jae ; Bae, Jong-Uk ; Seo, Hyun-Sik ; Kim, Chang-Dong ; Han, Min-Koo
Abstract :
A new shift register employing bottom-gate In-Ga-Zn-O thin-film transistors (IGZO TFTs) was proposed and fabricated. Depletion-mode IGZO TFTs were successfully turned off by employing two low-voltage-level signals. The IGZO shift register exhibited a high-voltage output pulse without any distortion and a maximum clock frequency of 417 kHz. The proposed shift register would be an important building block for a depletion-mode oxide TFT display.
Keywords :
clocks; gallium compounds; indium compounds; low-power electronics; shift registers; thin film transistors; zinc compounds; InGaZnO; bottom-gate thin-film transistor; depletion-mode IGZO TFT shift register; frequency 417 kHz; high-voltage output pulse; low-voltage-level signal; maximum clock frequency; Depletion mode; In–Ga–Zn–O thin-film transistors (IGZO TFTs); shift register;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2010.2090939
