半导体光电, 2018, 39 (3): 385, 网络出版: 2018-06-29  

扩散热阻对FR4/AlN复合材料导热性能的影响

Influence of Thermal Spreading Resistance on Thermal Dissipation Property of FR4/AlN Composite
作者单位
乐健科技(珠海)有限公司 广东省LED封装散热基板工程技术研究中心, 广东 珠海 519180
摘要
首先, 将AlN陶瓷表面金属化后分别切割成10mm×10mm×1.0mm、12mm×12mm×1.0mm及15mm×15mm×1.0mm的方块, 嵌入环氧树脂中制备成FR4/AlN复合材料; 然后, 利用SMT工艺将同款LED灯珠与上述内置三种不同尺寸AlN的复合基板材料组装成LED模组; 最后, 利用结温测试仪与半导体制冷温控台对三种LED模组分别进行了结温测试。同时, 结合热仿真手段对复合材料水平面的温度分布情况进行了模拟研究。结果表明: 上述三种尺寸陶瓷片对应LED的结温分别为96.95、92.94与91.81℃。热仿真结果显示, 陶瓷片尺寸通过界面热阻对扩散热阻产生影响, 增大陶瓷片尺寸有助于降低扩散热阻, 进而改善FR4/AlN复合材料的整体散热性能。
Abstract
Metallized AlN was split up into small pieces with the size of 10mm×10mm×1.0mm, 12mm×12mm×1.0mm and 15mm×15mm×1.0mm, which were then embedded into FR4 materials to fabricate FR4/AlN composites. Then LED module was formed by mounting the same type of LEDs with the composite substrate embedded with the three different sizes of AlN. Then the junction temperature of the three modules was measured with junction temperature tester and semiconductor refrigeration temperature control platform. Meanwhile, thermal simulation was performed on the temperature distribution of the xy plane of FR4/AlN composite. When the ceramic size is 10mm×10mm×1.0mm, 12mm×12mm×1.0mm and 15mm×15mm×1.0mm, the LED junction temperatures is 96.95, 92.94 and 91.81℃, respectively. Simulation results indicate that an increased ceramic size leads to a decreased interface thermal resistance which contributes to a more uniform temperature distribution, resulting in a declined spreading thermal resistance, thus enhancing the overall heat dissipation performance of FR4/AlN composite.

秦典成, 陈爱兵, 肖永龙, 高卫东, 袁绪彬, 黄广新, 庞燕平, 黄奕钊. 扩散热阻对FR4/AlN复合材料导热性能的影响[J]. 半导体光电, 2018, 39(3): 385. QIN Diancheng, CHEN Aibing, XIAO Yonglong, GAO Weidong, YUAN Xubin, HUANG Guangxin, PANG Yanping, HUANG Yizhao. Influence of Thermal Spreading Resistance on Thermal Dissipation Property of FR4/AlN Composite[J]. Semiconductor Optoelectronics, 2018, 39(3): 385.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!