Abstract
An amorphous indium-gallium-zinc-oxide (a-IGZO) pixel circuit
with three transistors and one capacitor is proposed for use in high-speed-scan
active-matrix organic light-emitting diode (AMOLED) displays. The
proposed pixel circuit can compensate for the threshold voltage shifts in both normally-off and normally-on
a-IGZO TFTs. Based on the simulation results with
$\pm$
1 V
threshold voltage shifts of the driving TFT, the relative error rates
of OLED currents are less than 4.46% for the entire range of data
voltages
$(-{9.9
V}{\sim}{5 V})$
.
© 2015 IEEE
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