The effects of plasma surface modification on the molding adhesion properties of Film-BGA package

Liu, Wen-Jen; Guo, Xiaojing; Chuang, Chun-Han

doi:10.1016/j.surfcoat.2004.08.127

Cited by 21 publications

(11 citation statements)

References 16 publications

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“…The previous researchers reported that the suitable functional groups such as hydroxyl (-OH), carbonyl (C5O) and carboxyl (COOH) species would promote the adhesion strength. 6,7,18 From the distribution of the C 1s components as a function of the plasma matrix, it can be estimated that the FR-4 substrate was changed to a chemically active state by the plasma treatment. This means that the plasma treatment of FR-4 substrate generated radicals on the surface with the subsequent exposure to air forming various oxygen containing species, which can be utilised to initiate the surface free radicals.…”

Section: Chemical Compositions Of Substrate Surfacesmentioning

confidence: 99%

Characterisation of FR-4 substrate with various plasma treatment conditions

Noh¹,

Jung²

2007

Materials Science and Technology

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The effects of plasma treatment on the surface of the flame resistant-4 (FR-4) substrate with underfills under various treatment conditions (operating gas, operating time, operating power) are investigated by using contact angle measurement, X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The plasma treatment on substrate surfaces increased the oxygen containing functional groups or the polar component of the surface free energy, improving the wetting characteristics of the underfills/FR-4 substrates. The plasma treatment conditions which minimised the contact angle between the underfills and FR-4 substrates were an operating power of 300 W and operating time of 180 s under Ar gas atmosphere.

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Section: Chemical Compositions Of Substrate Surfacesmentioning

confidence: 99%

Characterisation of FR-4 substrate with various plasma treatment conditions

Noh¹,

Jung²

2007

Materials Science and Technology

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“…The surface energy of a solid is generally determined by the intermolecular attraction due to the polar and dispersion interactions. 7 The surface morphology is of great importance for the surface wettability of a substrate. Figure 6a and b shows AFM images of the untreated FCCL.…”

Section: Resultsmentioning

confidence: 99%

“…Extensive plastic deformation occurs during the peel test, and the peel strength does not represent the interfacial fracture energy because the measured value includes both the debonding energy of the interface and the work expended during peeling. [7][8][9][10][11][12] Therefore, in this study, the reliability of FCCLs with different Ni-Cr layers after thermal treatment were investigated using the 90 deg peel test.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni-Cr Layer on Adhesion Strength of Flexible Copper Clad Laminate

Noh

Jung

2008

Journal of Elec Materi

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In this study, the effect of a Ni-Cr layer on the adhesion strength of flexible copper clad laminate (FCCL) was evaluated after thermal treatment. The changes in the chemical composition, morphology, and adhesion properties were characterized by scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and 90 deg peel test. The results showed that both the peel strength and thermal resistance of the FCCL increased with increasing Cr ratio. The thermal treatment of the FCCL increased the proportion of C-N bonds and reduced that of the C-O and carbonyl (C=O) bonds in the polyimide. The roughness of the fracture surface decreased with increasing thermal treatment temperature and holding time. The chemical function and roughness of the fracture surface were affected by the Ni-to-Cr ratio.

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“…Some studies indicated that suitable functional groups such as hydroxyl (-OH), carbonyl (C=O), and carboxyl (COOH) species would promote the adhesion strength. 5,6 From the distribution of the C 1s components as a function of the plasma matrix, it was estimated that the SiO 2 substrate was changed to a chemically active state by the plasma treatment. In other words, the plasma treatment of SiO 2 substrate generated radicals on the surface with the subsequent exposure to air forming various oxygen-containing species, which can be utilized to initiate the surface free radicals.…”

Section: Methodsmentioning

confidence: 99%