Abstract
This paper describes a new simultaneous emission AMOLED pixel
circuit to achieve high brightness. Unlike the previous simultaneous
emission scheme, the proposed one allows the programming operation
to take place at the same time with the emission of OLEDs, which leads
to high brightness. The proposed hybrid pixel circuit consists of
programming and driving parts. The programming part compensates for
the threshold voltage variation by means of a voltage programming
scheme and the driving part is updated from the programming part through
the internal current programming scheme. The SPICE simulation ensures
that the proposed scheme dramatically reduces the average current
error to 1.5% and 4.0% as to the threshold voltage variations of
$\pm {0.2 V}$
and
$\pm
{0.5 V}$
, respectively. In addition, because
approximately the whole frame time can be secured for the emission
period, the output luminance loss is alleviated substantially compared
with the previous method.
© 2014 IEEE
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