Review of Recent HV-LED Technology

Abstract:

LEDs for lighting application are becoming widely adopted due to economic, energy and environmental reasons. LEDs are conventionally powerd by low-voltage DC sources. More and more recent research works have been focusing on an integrated LED chip directly driven by high-voltage DC power supply (HV-LED). The chip structure, the key manufacturing processes and its driving technologies are discussed respectively in this paper, which indicates the advantages of HV-LED including higher luminous efficiency, lower cost and enhanced reliability, and base on this, a HV-LED flip chip is proposed.

• Periodical: Applied Mechanics and Materials (Volumes 220-223)
• Pages: 2075-2078
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.220-223.2075
• Online since: November 2012
• Authors: Jian Ming Hong, Xiao Yun Li, Ping Juan Niu
• Keywords: Driving Technologies, High Voltage DC, HV-LED, Manufacturing Processes

References

[1] C. H. Wang, D. W. Lin, C. Y. Lee, M. A. Tsai, G. L. Chen, H. T. Kuo, W. H. Hsu, H. C. Kuo, Electron device letters, Vol. 32, No. 8 (2011).

[2] Weifeng Feng, Yongzhi He, Shi. Frenk G, Proceedings - Electronic Components and Technology Conference, ISSN: 05695503 (2010).

[3] H. Jiang, J. Lin, and S. Jin. In:Light Emitting Diodes for High AC Voltage Operation and General Lighting. U.S. Patent 6957899 (2005).

[4] Jinmin Li, Yubo Fan, Ling Wu, Yong-Hang Zhang, Michael E. Solid State Lighting and Solar Energy Technologies, Proc. SPIE 6841 (2007).

[5] P-T. Chou, W-Y. Yeh, M-T. Lin, S-C. Tai, H-H. Yen, Transactions on industrial electronics, Vol.23 (2011).

[6] Jin-pineAo, in: Monolithic Integration of GaN-based LEDs, J. Phys. Conf. Ser (2011).

[7] Information on http://www.acrich.com