Feasibility Investigation of Amorphous Silicon as Release Layer in Temporary Bonding for 3-D Integration and FOWLP Scheme

Autor: Chuan-An Cheng, Yu-Hsiang Huang, Chien-Hung Lin, Chia-Lin Lee, Shan-Chun Yang, Kuan-Neng Chen
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: IEEE Journal of the Electron Devices Society, Vol 5, Iss 2, Pp 136-140 (2017)
Druh dokumentu: article
ISSN: 2168-6734
DOI: 10.1109/JEDS.2017.2661479
Popis: A reliable temporary bonding scheme with both inorganic amorphous silicon release layer and HD-3007 polyimide based on high 355-nm-wavelength laser absorption coefficient in release layer is proposed and investigated. Effects of laser absorption coefficient and laser ablation path are also studied to develop a high throughput laser ablation process. The bonding scheme can be achieved within the optimized temperature of 210 °C under 1 MPa bonding force. In addition, chemical resistance, mechanical strength with reliability assessment, and thermal stability test for bonded structure are inspected. There is no obvious degradation in electrical characterization after laser ablation, indicating that the temporary bonding scheme has high potential to be used for 3-D integration applications.
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