POLYMER SEALANT/ADHESIVE AND ITS USE IN ASSEMBLING ELECTRONIC PACKAGE

    公开(公告)号:JPH10245539A

    公开(公告)日:1998-09-14

    申请号:JP19831797

    申请日:1997-07-24

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To obtain a siloxane-containing polyimide adhesive capable of TSM capping with a reduced seal band width in assembling an electronic package and soluble in a solvent friendly to the environment by using an aromatic diether dianhydride, an aromatic diamine having a flexible molecular chain and a polysiloxanediamine. SOLUTION: The composition for forming the adhesive comprises an aromatic diether dianhydride, an aromatic diamine having a flexible molecular chain and a polysiloxanediamine having a vinyl functional group as part of the structure. The molar ratio of the anhydride to the total diamines is about 0.95/1 to 1.05/1, and an excess molar amount of the reactants are capped with a monohydride or a monoamine compound. This composition is polymerized to obtain a siloxane-containing polyimide adhesive. The seal band width is below 4mm.

    5.
    发明专利
    未知

    公开(公告)号:DE69202430T2

    公开(公告)日:1996-01-25

    申请号:DE69202430

    申请日:1992-09-11

    Applicant: IBM

    Abstract: The present invention relates generally to apparatus and methods for making simultaneous electrical connections, and more particularly to making these electrical connections simultaneously using a new bond tip configuration. Various methods and processes are being disclosed to simultaneously make electrical connections between electrical conductor lines or pads. The electrical connection is made by placing an electrically conductive wire across a pair of electrical lines or pads that have to be electrically connected and then by using a special tip, both ends of the electrically conductive wire are simultaneously secured to the two electrically conductive lines or pads.

    Solvent-free epoxy based adhesives for semiconductor chip attachment and process

    公开(公告)号:SG50837A1

    公开(公告)日:1998-07-20

    申请号:SG1997001778

    申请日:1997-05-29

    Applicant: IBM

    Abstract: The present invention discloses chip (die) bond adhesive formulations preferably comprising a siloxane containing epoxide preferably a diglycidyl ether derivative, an anhydride curing additive which is soluble in the epoxide without the use of a solvent, and, optionally comprising, an oligomeric/polymeric co-additive of the type poly(alkyl-acrylate or - methacrylate), in conjunction with thermal and electrically conductive fillers and conventional co-catalysts used for curing epoxy systems to provide reworkable epoxy adhesives. Also disclosed are adhesive formulations comprising a siloxane containing epoxide and a hydroxybenzophenone curing additive which is soluble in the epoxide without the use of a solvent. The chips can be bonded to the substrate by conventional heating and curing techniques. With epoxy adhesive compositions comprising polyacrylate additives, the die bonded assembly can be reworked by heating the assembly to about 180 DEG C to 250 DEG C removing the chip, and rebonding a new chip on the same surface without any effect on the shear strength for die bonded on to gold, copper, silver or a ceramic die pad. Die shear strength using the adhesives remains unchanged when exposed to thermal shock involving -65 DEG C to +150 DEG C excursions, and HAST test at 130 DEG C /85 percent RH (Relative Humidity) or 85 DEG C/85% RH. A method is also provided for using the adhesives to make electronic component assemblies.

    METHOD SYSTEM AND PROGRAM PRODUCT FOR MANAGING A FILE SYSTEMTHAT INCLUDES AN ARCHIVE

    公开(公告)号:CA2489619A1

    公开(公告)日:2006-06-07

    申请号:CA2489619

    申请日:2004-12-07

    Applicant: IBM CANADA

    Abstract: An improved solution for managing a file system that includes an archive is provided. In particular, a request for a file system operation can be received and performed on an object that is stored in an archive. The file system operation can be received from a first computer and performed on the object on a second computer. Further, an archive manager ca n be included that manages an extensible set of archive handlers. In this case, each archive handler can implement a set of file system operations for archives of a particular archive type.

    8.
    发明专利
    未知

    公开(公告)号:DE69202430D1

    公开(公告)日:1995-06-14

    申请号:DE69202430

    申请日:1992-09-11

    Applicant: IBM

    Abstract: The present invention relates generally to apparatus and methods for making simultaneous electrical connections, and more particularly to making these electrical connections simultaneously using a new bond tip configuration. Various methods and processes are being disclosed to simultaneously make electrical connections between electrical conductor lines or pads. The electrical connection is made by placing an electrically conductive wire across a pair of electrical lines or pads that have to be electrically connected and then by using a special tip, both ends of the electrically conductive wire are simultaneously secured to the two electrically conductive lines or pads.

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