Abstract
Luminance loss resulting from potential drop on
the transparent indium tin oxide (ITO) electrode due to its relatively
high resistivity is one of the most essential issues in the design
of large-area organic light-emitting diode (OLED) lighting panels.
One solution is to pattern metal grid with low sheet resistance on
the ITO electrode. However, the shape, height, and width of the metal
grid element have a great influence on the final luminance uniformity
of the device. In this paper, a method is proposed to optimize these
parameters in order to get the best luminance uniformity for large-area
OLED lighting panels. The method takes two grid geometry parameters—height
and width—into account and predicts the highest relative luminance
by finite element method simulations under different operating voltages.
© 2015 IEEE
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