Title :
A Novel Level Shifter Employing IGZO TFT
Author :
Kim, Binn ; Choi, Seung Chan ; Kuk, Seung-Hee ; Jang, Yong Ho ; Park, Kwon-shik ; Kim, Chang-Dong ; Han, Min-Koo
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., Seoul, South Korea
Abstract :
A new level shifter employing indium-gallium-zinc-oxide thin-film transistor (IGZO TFT) for a display panel was proposed and successfully fabricated. Two clock signals with 180° out of phase and a discharging TFT were employed to obtain a full-swing output. The IGZO level shifter has successfully exhibited a wide swing output from VDD to VSS without any additional power sources and input signals. The power consumption is 0.30 mW at a clock frequency of 12.5 kHz. The proposed level shifter with a depletion-mode device would be an important building block for an oxide TFT display.
Keywords :
flat panel displays; gallium compounds; indium compounds; phase shifters; thin film transistors; IGZO level shifter; InGaZnO; clock frequency; clock signals; depletion-mode device; display panel; flat panel display; frequency 12.5 kHz; oxide TFT display; power 0.30 mW; power consumption; thin-film transistor; Depletion mode; indium–gallium–zinc–oxide thin-film transistor (IGZO TFT); level shifter;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2010.2093505
