Process for controlling resin bleeding in integrated circuit packaging

    公开(公告)号:SG71204A1

    公开(公告)日:2000-03-21

    申请号:SG1999001692

    申请日:1999-04-20

    Abstract: A method for controlling resin bleeding on integrated circuit packages (125) is disclosed. Resin bleeding is controlled by lowering the surface energy of an IC substrate (110) to less than or about equal to the surface energy of an adhesive (130) which attaches IC units thereto. The IC substrate is treated with a material (150) that lowers its surface energy. The material layer forms a less wettable surface on the IC substrate which inhibits resin bleeding when the adhesive applied thereto is hardened. The material layer is formed from a solution of a polymer in a solvent. Suitable polymers include polyfluorinated hydrocarbon compounds.

    ELECTROPLATING SOLUTION FOR ELECTROPLATING LEAD AND LEAD/TIN ALLOYS

    公开(公告)号:SG83186A1

    公开(公告)日:2001-09-18

    申请号:SG200000571

    申请日:2000-02-01

    Abstract: An electroplating solution for plating bright tin, lead, or tin-lead alloy solder coatings in high speed electroplating applications. The electroplating solution includes an alkane or alkanol sulfonic acid electrolyte, a non-ionic surfactant, a grain refiner and two brightening agents: an aromatic aldehyde and a carboxylic acid. In one embodiment of the electroplating solution, the sulfonic acid electrolyte is methane sulfonic acid, the non-ionic surfactant is octylphenoxy(10)polyethoxy ethanol, the grain refiner is phenolphthalein, the aromatic aldehyde is chlorobenzaldehyde, and the carboxylic acid is methacrylic acid.

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