Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5007634 | Optics & Laser Technology | 2017 | 5 Pages |
Abstract
Low light extraction efficiency (LEE) is a key challenge of chip-on board (COB) packaging light-emitting diodes (LEDs). In this paper, a facile preparation of micro-lens array was proposed based on the ion wind patterning. The geometries and sizes of the micro-lens arrays were controlled through adjusting the voltage parameter of the ion wind generation. Consequently, the micro-lens array with the diameter of 180 µm and the gap distance of 15 µm has been fabricated. Benefitting from this micro-lens array, the LEE of COB packaging LEDs was enhanced by 9%. This facile fabrication of micro-lens array would be a promising method to improve the LEE of COB packaging LEDs.
Related Topics
Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
Jingcao Chu, Xiang Lei, Jiading Wu, Yang Peng, Sheng Liu, Qian Yang, Huai Zheng,