A novel three-dimensional (3D) multi-layer through-hole filling process using solderable polymer composites (SPCs) was developed to overcome several limitations of the conventional 3D package technique. To investigate the multi-layer through-hole filling properties of SPCs, SPCs with functionalized polymer composite and low-melting-point-alloy (LMPA) fillers were formulated, and a multi-layer through-hole filling test was conducted under atmospheric pressure and decompression reflow conditions. The results indicated that the multi-layer through-hole filling assemblies under the atmospheric pressure reflow condition have weak through-hole filling and interlayer interconnection properties because of the weak elimination of residual polymer composite and voids within the through-hole. Meanwhile, the multi-layer through-hole filling assemblies reflowed under the decompression condition showed improved through-hole filling properties because of the favorable elimination of polymer composite and voids within the through-hole and the excellent wetting behavior of molten fillers. The corresponding electrodes between the stacked boards were electrically interconnected by the proper selective wetting behavior of molten LMPA, and the spaces between stacked boards were underfilled by the cured polymer composite.
|Number of pages||9|
|Journal||Journal of Materials Science: Materials in Electronics|
|Publication status||Published - 2016 Jun|
Bibliographical noteFunding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and future Planning (2014007164) and Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20134030200350).
© Springer Science+Business Media New York 2016.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering