Blue and white light emitting high power density LED modules

Author

Schneider, Marc ; Leyrer, Benjamin ; Osswald, Bernhard ; Herbold, Christian ; Herrmann, Franziska ; Eilert, Kirsten ; Brandner, Jurgen B. ; Jin-Kai Chang ; Yi-Chung Huang ; Wood-Hi Cheng

Author_Institution

Karlsruhe Inst. of Technol. (KIT), Inst. for Data Process. & Electron. (IPE), Karlsruhe, Germany

fYear

2015

fDate

26-29 May 2015

Firstpage

1287

Lastpage

1292

Abstract

We present optical measurements of an optimized LED module consisting of 98 blue light emitting LED chips silver-sintered onto an aluminum nitride ceramic substrate within an area of 211 mm². The module is cooled by a high performance microstructured water cooler. Using this cooler a maximum optical power density of 111.6 W/cm² at a forward current of 3003 mA and 1255.6 W electrical input power could be achieved. Placing sintered glass discs doped with yellow phosphor in different concentrations in front of the module, white light with correlated color temperatures between 3600 K and 4200 K was produced.

Keywords

aluminium compounds; ceramics; doping; light emitting diodes; optical variables measurement; phosphors; silver; sintering; thermal management (packaging); Ag; AlN; LED modules; aluminum nitride ceramic substrate; blue light emitting LED chips; color temperatures; current 3003 mA; light emitting diodes; microstructured water cooler; optical measurements; optical power density; power 1255.6 W; silver; sintered glass discs; size 211 mm; temperature 3600 K to 4200 K; yellow phosphor; Color; Density measurement; Glass; Light emitting diodes; Phosphors; Power system measurements; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Components and Technology Conference (ECTC) , 2015 IEEE 65th

Conference_Location

San Diego, CA

Type

conf

DOI

10.1109/ECTC.2015.7159763

Filename

7159763