The effect of spacing among cell LEDs in high voltage (HV) LEDs performance was investigated in this study. Four kinds of HV LEDs with different spacing are presented. From the results of LEDs output power and luminance intensity distribution, the spacing certainly influences the light extraction of LEDs. The 110% enhanced output power and 10% increased Wall-plug efficiency HV LED was demonstrated with using 80 μm spacing in compared with 20 μm due to the suppression of light absorbed by neighbor cell LEDs.
|Title of host publication||Wide-Bandgap Semiconductor Materials and Devices 13|
|Number of pages||5|
|State||Published - 19 Nov 2012|
|Event||13th Symposium on Wide Bandgap Semiconductor Materials and Devices - 221st ECS Meeting - Seattle, WA, United States|
Duration: 6 May 2012 → 10 May 2012
|Conference||13th Symposium on Wide Bandgap Semiconductor Materials and Devices - 221st ECS Meeting|
|Period||6/05/12 → 10/05/12|