Hui, Zhang ; Wagner, Max ; Khanh, Tran Quoc (2016)
Comparing New Dielectric Materials for Chip-on-Board LED Packages.
In: LED professional Review (LpR), 58
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2016 |
| Creators: | Hui, Zhang ; Wagner, Max ; Khanh, Tran Quoc |
| Type of entry: | Bibliographie |
| Title: | Comparing New Dielectric Materials for Chip-on-Board LED Packages |
| Language: | English |
| Date: | 2016 |
| Publisher: | Luger Research e.U. |
| Journal or Publication Title: | LED professional Review (LpR) |
| Volume of the journal: | 58 |
| 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. |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Electromechanical Design (dissolved 18.12.2018) 18 Department of Electrical Engineering and Information Technology > Light Technology (from Oct. 2021 renamed "Adaptive Lighting Systems and Visual Processing") |
| Date Deposited: | 17 Apr 2017 08:58 |
| Last Modified: | 30 Oct 2023 10:18 |
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