Finite volume method study on contact line jump phenomena and dynamic contact angle of underfill flow in flip-chip of various bump pitches

FC Ng, A Abas, MZ Abdullah - IOP Conference Series: Materials …, 2019 - iopscience.iop.org
Three distinct flip-chip underfill cases were considered in this work, with each possess a
bump pitch of 0.8 mm, 1.0 mm and 1.2 mm. Contact line jump (CLJ) phenomenon during the …

Spatial analysis of underfill flow in flip-chip encapsulation

FC Ng, MH Zawawi, MA Abas - Soldering & Surface Mount …, 2021 - emerald.com
Purpose The purpose of the study is to investigate the spatial aspects of underfill flow during
the flip-chip encapsulation process, for instance, meniscus evolution and contact line jump …

Symmetrical unit-cell numerical approach for flip-chip underfill flow simulation

FC Ng, MH Zawawi, LH Tung, MA Abas… - CFD Letters, 2020 - akademiabaru.com
Underfill process is a critical manufacturing process to safeguard and enhance the package
reliability of flip-chip devices. In most underfill researches, the underfill flow was primarily …

Prediction of filling time in capillary-driven underfill process through 3D numerical analysis

K Wang, Y Wang, W Zhu - 2018 19th International Conference …, 2018 - ieeexplore.ieee.org
Underfill, mainly composed of epoxy resin and silica fillers, is used to fill the standoff gap in
flip chip to alleviate stress and prevent the solder bumps from crack and fatigue fracture. In …

Effect of contact angle on meniscus evolution and contact line jump of underfill fluid flow in flip-chip encapsulation

FC Ng, LH Tung, MH Zawawi, MAFM Mukhtar… - CFD Letters, 2020 - akademiabaru.com
Despite the contact angle of underfill fluid is largely correlated to the flowability, it was
scarcely being investigated in the design optimization of flip-chip underfill encapsulation …

Influence of gap height in flip chip underfill process with non-Newtonian flow between two parallel plates

CY Khor, MZ Abdullah, M Abdul Mujeebu - 2012 - asmedigitalcollection.asme.org
In this paper, the finite volume method (FVM) is used for the simulation of flip chip underfill
process by considering non-Newtonian flow between two parallel plates that emulate the …

A two-dimensional simulation model for the molded underfill process in flip chip packaging

XR Guo, WB Young - Journal of Mechanical Science and Technology, 2015 - Springer
The flip chip process involves the deposition of solder bumps on the chip surface and their
subsequent direct attachment and connection to a substrate. Underfilling traditional flip chip …

Investigation of characteristics of the capillary-driven underfill flow

K Wang, Y Wang, W Zhu - 2018 19th International Conference …, 2018 - ieeexplore.ieee.org
Underfill is applied to fill the gap between the silicon chip and the organic substrate of the
flip-chip to enhance its thermal-mechanical reliability. This paper focus on the traditional …

3D simulation of fine pitch underfill encapsulation

CC Hsu, HS Chiu, WH Yang… - 2010 5th International …, 2010 - ieeexplore.ieee.org
The flip chip molding is much smaller than a traditional carrier-based system; the chip sits
directly on the circuit board, and is much smaller than the carrier both in area and height …

Underfill flow in flip-chip encapsulation process: a review

FC Ng, MA Abas - Journal of Electronic Packaging, 2022 - asmedigitalcollection.asme.org
The scope of review of this paper focused on the precuring underfilling flow stage of
encapsulation process. A total of 80 related works has been reviewed and being classified …