Abstract
This paper presents a yield optimization tool, FlexiOptimizer ,
for flexible thin-film transistor (TFT) circuits. FlexiOptimizer considers
three important effects: (1) process variation; (2) aging effect; and (3)
bending effect. This SPICE-based optimizer applies response surface methodology
(RSM) and orthogonal array (OA) techniques to size transistors so the yield
is improved in aged and bent condition. This tool is demonstrated on two different
designs: organic light emitting diode (OLED) pixel drivers and differential
operational amplifiers (OPAMPs), in both amorphous silicon (a-Si) and Indium-Gallium-Zinc-Oxide
(IGZO) TFT technologies.
© 2014 IEEE
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