Enhanced light extraction efficiency of chip-on board light-emitting diodes through micro-lens array fabricated by ion wind

被引：15

作者：

Chu, Jingcao ^{[1
]}

Lei, Xiang ^{[1
]}

Wu, Jiading ^{[1
]}

Peng, Yang ^{[1
]}

Liu, Sheng ^{[2
]}

Yang, Qian ^{[2
]}

Zheng, Huai ^{[2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Peoples R China

[2] Wuhan Univ, Sch Power & Mech Engn, Wuhan 430072, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2017年 / 89卷

基金：

中国国家自然科学基金;

关键词：

Light-emitting diodes (LEDs); Micro-lens array; Chip-on board (COB) packaging; Light extraction efficiency (LEE); Ion wind; PACKAGING LEDS;

D O I：

10.1016/j.optlastec.2016.09.045

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 gm and the gap distance of 15 gm 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.

引用

页码：92 / 96

页数：5

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