Browse > Article
http://dx.doi.org/10.6117/kmeps.2013.20.4.013

Peel strengths of the Composite Structure of Metal and Metal Oxide Laminate  

Shin, Hyeong-Won (Rare metals R&D Group, Korea institute of Industrial Technology)
Jung, Taek-Kyun (Rare metals R&D Group, Korea institute of Industrial Technology)
Lee, Hyo-Soo (Rare metals R&D Group, Korea institute of Industrial Technology)
Jung, Seung-Boo (Department of Advanced Material Science and Engineering, Sungkyunkwan University)
Publication Information
Journal of the Microelectronics and Packaging Society / v.20, no.4, 2013 , pp. 13-16 More about this Journal
Abstract
A lot of various researches have been going on to use heat spreader for LED module. Nano porous aluminum anodic oxide (AAO) applied LED, which is produced from anodization, is easy and economically advantageous. Convensional LED module is consist of aluminum/adhesive/copper circuit. The polymer adhesive in this module is used as heat spreader. However the thermal emission of LED component is degraded because of low heat conductivity of polymer and also reliability of LED component is reduced. Therefore, AAO in this work was applied to heat spreader of LED module which has higher heat conductivity compare to polymer. Bonding strength between AAO and copper circuit was improved with Ti/Cu seed layer by copper sputtering process (DBC) before the bonding. And this copper circuit has been fabricated by electro plating method. Peel strength of AAO and copper circuit in this work showed range between 1.18~1.45 kgf/cm with anodizing process which is very suitable for high power LED application.
Keywords
LED module; heat spreader; AAO; anodizing process; peel strength;
Citations & Related Records
연도 인용수 순위
  • Reference
1 A.M.Kliauga, D.Travessa, M.Ferrante. Al2O3/Tiinterlayer/AISI304 diffusionboned joint microstructural characterization of the two interfaces. Materials characterization, 46, 65(2001).   DOI   ScienceOn
2 H. Lu, C.L. Bao, D.H.Shen, X.J. Zhang, Y.D. Cui, Z.D. Lin. Study of the To/Al2O3interface.Journalofmaterialsscience, 30, 339 (1995).   DOI
3 H. Liu, C. Huang, J. Wang, X. Teng. Fabrication and mechanical properties of Al2O3/Ti(C0.7N0.3)nanocomposites.Materialsresearchbulletin, 41, 1215 (2006).   DOI   ScienceOn
4 A.G. Limonov. Numeric simulation of the formation of hexagonal nanoscale structure arrays in anodic aluminum oxide. Matematicheskoe modelirovanie, 22(8), 97 (2010).
5 J.M. Montero-Moreno, M. Sarret, C. Muller. Self-ordered porous alumina by two step anodizing at constant current: Behaviour and evolution of the structure. Microporous and mesoporous materials 136, 68 (2010).   DOI   ScienceOn
6 Minseok Choi, Anderson Janotti, Chris G. Native point defects and dangling bonds in ${\alpha}-Al_2O_3$: Journal of applied physics 113, 044501(2013).   DOI   ScienceOn
7 L. Fernandez-Romero, J.M. Montero-Moreno, E. Pellicer, F. Peiro, A. Cornet, J.R. Morante, M. Sarret, C. Muller. Assessment of the thermal stability of anodic alumina membranes at high temperatures. Materials chemistry and physics, 111, 542 (2008).   DOI   ScienceOn
8 H. Konno, K. Utaka, R. Furuichi. A two step anodizing process of aluminum as a means for improving the chemical and physical properties of oxide films. Corrosion science, 38(12), 2247 (1996).   DOI   ScienceOn
9 K.Y. Ng, A.H.W. Ngan. Effects of pore-channel ordering on the mechanical properties of anodic aluminum oxide nano-honeycombs. Scripta Materialia 66, 439 (2012).   DOI   ScienceOn
10 M. Norek, W.J.Stepniowski, M. Polanski, D. Zasada, Z. Bojar, J. Bystrzycki. Acomparative study on the hydrogen absorption of thin films at room temperature deposited on non-porous glass substrate and nano-porous anodic aluminum oxide(AAO) template. International journal of hydrogen energy, 36, 11777 (2011).   DOI   ScienceOn
11 B. Mert, B. Yazici, T. Tuken, G. Kardas, M. Erbil. Anodizing and Corrosion Behaviour of Aluminum. Protection of metals and physical chemistry of surfaces, 47(1), 102 (2011).   DOI