Research of Novel Phosphor Membrane Packaging Technology for LED Illuminant

Abstract:

A ultra-thin phosphors membrane which realized a good matching of the SMD bracket was prepared by the silk screen printing technology, and the white LED illuminant with the ultra-thin phosphors membrane had a significant advantage over the traditional packing production. The experiment results indicated that the white LED of conventional color rendering index made by membrane packing technology had the same luminous efficiency with the standard sample, while it had an obvious advantage in luminous decay. In 3000 hours, the luminous decay of the white LED illuminant made by membrane packing technology was less than 2%, better than the standard sample with the luminous decay of 3%. The luminous efficiency of the high color rendering index white LED illuminant made by membrane packing technology was higher about 3% than the standard sample; also the luminous decay performance was outstanding.

• Periodical: Applied Mechanics and Materials (Volume 624)
• Pages: 410-414
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.624.410
• Online since: August 2014
• Authors: Rui Heng Liu*, Chao Liang, Shu Ya Li
• Keywords: LED of White Packing Concentration, Luminous Flux: Luminous Decay, Phosphors Membrane, White LED

References

[1] Proc. 3rd China Int. Forum on Novel Light Energy Sources, Shanghai, China, April 2009, p.21–23.

[2] S.Y.R. Hui, S.N. Li, X.H. Tao, W. Chen, A novel passive LED driver with long life time, in Proc. IEEE Appl. Power Electron. Conf., Palm Spring, CA, Feb. 2010, p.594–600.

[3] Esteves ACC, Brokken-Zijp J, Laven J, de With G. Light converter coatings from cross-linked PDMS/particles composite materials. Prog Org Coat 2010; 68: 12–8.

DOI: 10.1016/j.porgcoat.2009.09.020

[4] Trevisanello L, De Zuani F, Meneghini M, Trivellin N, Zanoni E, Meneghesso G. Thermally activated degradation and package instabilities of low flux leds. In: IEEE international reliability physics symposium proceedings; 2009. p.98–103.

DOI: 10.1109/irps.2009.5173231

[5] Meneghini M, Trivellin N, Trevisanello L, Lunev A, Yang J, Bilenko Y, et al. Combined optical and electrical analysis of AlGaN-based deep-UV LEDs reliability. In: IEEE international reliability physics symposium proceedings; 2008. p.441–45.

DOI: 10.1109/relphy.2008.4558925

[6] Wang YW, Niu PJ, Zhang JX, Liu JR. Recent development and status of high-power LED heat release technology. In: Proceedings of 2010 Asia-Pacific youth conference on communication, 1 and 2; 2010. p.205–8.

[7] Jung E, Ryu JH, Hong CH, Kim H. Optical degradation of phosphor-converted white GaN-based light-emitting diodes under electro-thermal stress. J Electrochem Soc 2011; 158: H132–6.

DOI: 10.1149/1.3524285

[8] Yuan YC, Rong MZ, Zhang MQ, Chen B, Yang GC, Li XM. Self-healing polymeric materials using epoxy/mercaptan as the healant. Macromolecules 2008; 41: 5197–202.

DOI: 10.1021/ma800028d