Efficiency improvement and image quality of organic light-emitting display by attaching cylindrical microlens arrays
Resource
Optics Express 16 (26): 21184-21190
Journal
Optics Express
Journal Volume
16
Journal Issue
26
Pages
21184-21190
Date Issued
2008
Author(s)
Ho, Yu-Hsuan
Chen, Kuan-Yu
Lin, Hoang-Yan
Fang, Jheng-Hao
Hsu, Sheng-Chih
Lin, Jia-Rong
Wei, Mao-Kuo
Abstract
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.
SDGs
Type
journal article
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