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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lisheng Huang Siansyun Liao Chingfu Tsou Sanshan Hung |
| Copyright Year | 2015 |
| Description | Author affiliation: Dept. of Autom. Control Eng., Feng Chia Univ., Taichung, Taiwan (Chingfu Tsou) |
| Abstract | Due to the thermal energy affects on the electrical property of LED, its driving power requires constant current control to adjust brightness. However, this approach requires extensive electronic parts to conduct signal processing, which will decrease the reliability and lifetime of LED. Moreover, as the packaging volume increases, manufacturing costs become relatively higher. In order to address these issues, a silicon-based LED packaging module with a temperature compensating capacitor is proposed, which can provide stable luminous efficiency, and be applied to the constant voltage driving mode. The packaging module uses 3D stacking technology to integrate LED and a capacitor on a silicon micromachining substrate. The inductor is used for electrical impedance with a capacitor when supplying a constant voltage with periodical switch mode to LED. Based on this configuration, the temperature variation generated by the LED can directly change the capacitance in a series driving circuit; thereby, compensating the resistance variation in the LED to stabilize the driving current. Thus, a miniaturized, low-cost, constant voltage controllable LED module can be achieved. |
| Starting Page | 265 |
| Ending Page | 268 |
| File Size | 1057149 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781467396905 |
| e-ISBN | 9781467383561 |
| DOI | 10.1109/IMPACT.2015.7365200 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-10-21 |
| Publisher Place | Taiwan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Temperature measurement Voltage measurement Capacitors Packaging Light emitting diodes LED Temperature compensating capacitor Inductors Voltage control Constant voltage control |
| Content Type | Text |
| Resource Type | Article |
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