Open AccessEfficiency improvement and image quality of organic light-emitting display by attaching cylindrical microlens arrays
Author(s) -
JiunHaw Lee,
YuHsuan Ho,
Kuan–Yu Chen,
HoangYan Lin,
JhengHao Fang,
Sheng-Chih Hsu,
Jia-Rong Lin,
MaoKuo Wei
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.021184
Subject(s) - microlens , oled , optics , materials science , image quality , optoelectronics , flat panel display , flat panel , viewing angle , electrical efficiency , diode , luminous efficacy , power (physics) , physics , liquid crystal display , computer science , image (mathematics) , lens (geology) , layer (electronics) , quantum mechanics , artificial intelligence , composite material
In this paper, cylindrical microlens arrays with two different alignments were proposed to be applied in a commercial mobile phone having an organic light-emitting diode (OLED) panel. It was found that the parallel-aligned cylindrical array had better performance than the vertical-aligned one for the OLED panel. The parallel-aligned cylindrical microlens array can increase the luminous current efficiency at surface normal and the luminous power efficiency of the OLED panel by 45% and 38%, respectively. Besides, it can also make the spectrum of the OLED panel more insensitive to the viewing angle. Though it can slightly blur the image on the OLED panel, the universal image quality index can be maintained at a level of 0.8630.