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Patterning of OLED Glass Substrate for Improving Light Outcoupling Efficiency
Savanna LLOYD Tatsuya TANIGAWA Heisuke SAKAI Hideyuki MURATA
IEICE TRANSACTIONS on Electronics
Publication Date: 2019/02/01
Online ISSN: 1745-1353
Type of Manuscript: BRIEF PAPER
organic light emitting diodes, light outcoupling, substrate waveguides, laser patterning,
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In this work, we have successfully patterned OLED glass substrates with a novel Yb-doped femtosecond laser. Such patterns can simultaneously increase the outcoupling efficiency up to 24.4%, as a result of reducing substrate waveguided light by scattering at the substrate/air interface and reduce the viewing angle dependence of the electroluminescent spectra.