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Comparing New Dielectric Materials for Chip-on-Board LED Packages

Hui, Zhang ; Wagner, Max ; Khanh, Tran Quoc :
Comparing New Dielectric Materials for Chip-on-Board LED Packages.
In: LED professional Review (LpR) (58) pp. 50-53. ISSN 1993-890X
[Artikel], (2016)

Kurzbeschreibung (Abstract)

Light-emitting diodes used in automotive headlamps do not radiate much heat as they light up, but they create heat within the chip, or die, when the electricity passes through, which can compromise the cooling of adjacent assemblies and connectivity cables. For this reason, LED headlamps need cooling systems, such as heatsinks or fans. Also, although these solid-state devices will last a long time when they are operated at low currents and temperatures (as long as 25,000 to 100,000 hours), heat and current settings can extend or shorten this time significantly. High-power LEDs are subjected to higher junction temperatures and higher current densities than traditional devices. This causes stress on the material and may cause early light-output degradation.

Typ des Eintrags: Artikel
Erschienen: 2016
Autor(en): Hui, Zhang ; Wagner, Max ; Khanh, Tran Quoc
Titel: Comparing New Dielectric Materials for Chip-on-Board LED Packages
Sprache: Englisch
Kurzbeschreibung (Abstract):

Light-emitting diodes used in automotive headlamps do not radiate much heat as they light up, but they create heat within the chip, or die, when the electricity passes through, which can compromise the cooling of adjacent assemblies and connectivity cables. For this reason, LED headlamps need cooling systems, such as heatsinks or fans. Also, although these solid-state devices will last a long time when they are operated at low currents and temperatures (as long as 25,000 to 100,000 hours), heat and current settings can extend or shorten this time significantly. High-power LEDs are subjected to higher junction temperatures and higher current densities than traditional devices. This causes stress on the material and may cause early light-output degradation.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: LED professional Review (LpR)
(Heft-)Nummer: 58
Verlag: Luger Research e.U.
Fachbereich(e)/-gebiet(e): 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektromechanische Konstruktionen > Lichttechnik
Hinterlegungsdatum: 17 Apr 2017 08:58
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