2016 iMiD, Jeju, Republic of Korea
August 24 - 26, 2016 (Wed - Fri), ICC Jeju
<Oral Session : 60. Driving Circuit and Panel Design>
Low-Dropout Regulator based on a-InGaZnO Thin-Film Transistor for Display Driving Systems
Yongchan Kim, Hojin Lee
Abstract
Among various thin-film transistor (TFT) technologies developed so far for integrating the display driving system onto TFT arrays and, therefore, to eliminate the IC assembly, amorphous Indium-Gallium-Zinc-Oxide (a-InGaZnO) TFTs have shown favorable electrical characteristics to achieving the integrated driving circuitry. Previously, we had demonstrated a fully adaptive DC-DC converter circuit could be built with a-InGaZnO TFT based operational amplifier (op-amp). However, in order to make the adaptive DC-DC converter functional, it required an external circuit block made of commercial passive devices on a printed circuit board (PCB). Different from the reported DC-DC converter, Low-Dropout (LDO) regulators are well known to have simple structures with small occupied area, accurate output voltages, and low output ripples. In this paper, we designed a fully integrated LDO regulator on glass substrate for supplying the designated power to display systems.
