Influence of titanate and zirconate coupling agents in epoxy underfill material

Author

Luo, Shijian ; Yamashita, Tsuyoshi ; Wong, C.P.

Author_Institution

Packaging Res. Center, Georgia Inst. of Technol., Atlanta, GA, USA

fYear

2001

fDate

2001

Firstpage

312

Lastpage

317

Abstract

This paper presents an investigation of the effects of five titanate and zirconate coupling agents (CA) with different functional groups on various properties of epoxy underfill materials, including viscosity, curing, thermo-mechanical properties, and adhesion to SiO₂ passivation. CA-A, CA-C, and CA-E increased the viscosity of underfill. Addition of the coupling agents led to decrease in the curing onset temperature of epoxy underfill formulations. All of the coupling agents investigated in this study also brought a slight decrease in glass transition temperature (T_g) of epoxy underfill. The die shear test of underfill on SiO₂ passivation showed that the adhesion was not changed significantly with the addition of the titanate and zirconate coupling agents, except for CA-E. The influence of coupling agent CA-E concentration in underfill materials was further investigated. CA-E has potential for use in epoxy underfill to improve adhesion

Keywords

adhesion; encapsulation; flip-chip devices; glass transition; heat treatment; integrated circuit interconnections; integrated circuit packaging; integrated circuit testing; passivation; polymer films; shear strength; viscosity; SiO₂; SiO₂ passivation; adhesion; coupling agent concentration; coupling agent functional groups; curing; curing onset temperature; die shear test; epoxy underfill material; epoxy underfill materials; glass transition temperature; thermo-mechanical properties; titanate coupling agents; underfill materials; viscosity; zirconate coupling agents; Adhesives; Assembly; Curing; Delamination; Joining materials; Passivation; Soldering; Temperature; Titanium compounds; Viscosity;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Packaging Materials: Processes, Properties and Interfaces, 2001. Proceedings. International Symposium on

Conference_Location

Braselton, GA

Print_ISBN

0-930815-64-5

Type

conf

DOI

10.1109/ISAOM.2001.916594

Filename

916594