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P‐152: Emitter‐Apodization‐Dependent Angular Luminance Enhancement of Microlens‐Array Film Attached OLED Devices
Author(s) -
Chen KuanYu,
Chang YungTing,
Ho YuHsuan,
Lin HoangYan,
Lee JiunHaw,
Wei MaoKuo
Publication year - 2010
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3500349
Subject(s) - microlens , luminance , oled , common emitter , apodization , materials science , optoelectronics , optics , groove (engineering) , physics , layer (electronics) , nanotechnology , lens (geology) , metallurgy
Taking organic emitter apodization calculated from electromagnetic theory as input, the angular luminance enhancement of a microlens‐array‐film (MAF) attached OLED (organic light‐emitting device) can be further evaluated by raytracing approach. First, we assumed artificial emitters and revealed that not every OLED with MAF has luminance enhancement. Then, the OLEDs of different Alq 3 thickness were fabricated and their angular luminance measurement validated simulation results. Mode analyses for different layers were performed to estimate the enhancement potential of the MAF attached devices. In conclusion, the organic emitters with higher off‐axis‐angle luminous intensity cause lower out‐coupling efficiency but gain higher enhancement after the MAF attached.