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http://dx.doi.org/10.6117/kmeps.2012.19.4.079

Effects of ZnO Composition on the Thermal Emission Properties for LTCC Type of High Power LED Package  

Kim, Woojeong (Dept. of Advanced Materials Engineering, Korea Polytechnic University)
Kim, Hyung Soo (Dept. of Advanced Materials Engineering, Korea Polytechnic University)
Shin, Daegyu (Dept. of Advanced Materials Engineering, Korea Polytechnic University)
Lee, Hee Chul (Dept. of Advanced Materials Engineering, Korea Polytechnic University)
Publication Information
Journal of the Microelectronics and Packaging Society / v.19, no.4, 2012 , pp. 79-83 More about this Journal
Abstract
LTCC (Low temperature co-fired ceramic) package have been paid much attention due its good reliability, miniaturization, and application of silver paste with complex wiring and printing. Therefore, LTCC package has been expected to replace vulnerable plastic package in the field of high power LED device. Currently, LTCC ceramic package is mainly made up of aluminum oxide powder. In this study, zinc oxide powder is added or replaced for the fabrication of LTCC ceramic body. By adding small amount of ZnO, thermal conductivity of the LTCC ceramic body could be remarkably increased by 25% leading to the extension of LED life time. The LTCC package structure with composition including ZnO has an increased thermal flux by 56% as a result of ANSYS simulation. Actually, the fabricated LED package with the addition of ZnO exhibits a decreased thermal resistivity by 14.9%.
Keywords
LED; Package; LTCC; Thermal conductivity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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