SID Display Week 2023, Los Angeles, USA
May 22 - May 26, 2023 (Mon. - Fri.), Los Angeles Convention Center
An AMOLED Pixel Circuit Compensating for Variation of Sub-threshold
Swing and Threshold Voltage Based on Double Gate a-IGZO TFTs
Hyunwoo Kim, Yongchan Kim, and Hojin Lee
Abstract
In this paper, an AMOLED pixel circuit based on amorphous
indium-gallium-zinc-oxide (a-IGZO) thin-film transistors (TFTs)
compensating for variations in sub-threshold swing (SS) and
threshold voltage (VTH) of driving TFT is proposed. The proposed
pixel circuit is composed of five TFTs and one capacitor. From
the simulation results, when the SS and VTH shifts of the driving
up to ±10% and ±1 V, the maximum OLED current error can be
suppressed to 3.6% and 7.2%, respectively.
