Output Properties of Transparent Submount Packaged FlipChip Light-Emitting Diode Modules

Applied Sciences

Preetpal Singh¹  Chao-Sung Lai¹  Cher-Ming Tan¹  Chih-Teng Hou¹  Der-Hwa Yeh¹  Ting-Yu Chao¹  Liann-Be Chang¹ 

[1] Department of Electronic Engineering, Chang Gung University, Kweishan, Taoyuan 333, Taiwan;

关键词: flip chip;    light emitting diode;    transparent submount;    light extraction;   

DOI  :  10.3390/app6060179

来源: DOAJ

【 摘 要 】

Flip chip technology has been widely adopted in modern power light-emitting diode (LED) fabrications and its output efficiency is closely related to the submount material properties. Here, we present the electrical, optical and thermal properties of flip chip light-emitting diodes mounted on transparent sapphire and borosilicate glass which have shown a higher output luminous flux when compared to the traditional non-transparent mounted LEDs. Exhibiting both better thermal conductivity and good optical transparency, flip chip LEDs with a sapphire submount showed superior performance when compared to the non-transparent silicon submount ones, and also showed better optical performance than the flip chip LEDs mounted on transparent but poor-thermal-conducting glass substrates. The correspondent analysis was carried out using ANSYS 14 to compare the experimental thermal imaging with the simulation results. TracePro software was also used to check the output luminous flux dependency on different LED mounting designs.

【 授权许可】

Unknown