Grid Optimization of Large-Area OLED Lighting Panel Electrodes

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...

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Bibliographic Details
Published inJournal of display technology Vol. 12; no. 6; pp. 605 - 609
Main Authors Tang, Haoning, Jiang, Yibin, Tang, Ching Wan, Kwok, Hoi-Sing
Format Journal Article
LanguageEnglish
Published New York IEEE 01.06.2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Electric potential
Electrode
Electrodes
Indium tin oxide
large-area
Lighting
luminance uniformity
metal grid
Metals
OLED lighting
Organic light emitting diodes
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Summary: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.
ISSN:1551-319X
1558-9323
DOI:10.1109/JDT.2015.2511023