1.
    发明专利
    未知

    公开(公告)号:DE68923740D1

    公开(公告)日:1995-09-14

    申请号:DE68923740

    申请日:1989-05-13

    Applicant: IBM

    Abstract: An electronic package (10) including a first circuitized substrate 11 (e.g., printed circuit board) having connected thereto a second, flexible circuitized substrate (e.g., polyimide with chrome-copper-chrome circuitry thereon). The second substrate is in turn electrically connected to the invention's semiconductor device (e.g., silicon chip), which device in turn is attached to a heat spreader (37) for providing effective heat transference from the device to the package's heat sink (33). The heat sink is attached to the first substrate (e.g., using solder). Significantly, the coefficient of thermal expansion of the heat spreader, semiconductor device and adhesive used to connect same are substantially similar in order to provide an effective heat path from the heat-generating device to the corresponding, much larger heat sink.

    ELECTRONIC PACKAGE WITH HEAT SPREADER MEMBER

    公开(公告)号:CA1287929C

    公开(公告)日:1991-08-20

    申请号:CA601600

    申请日:1989-06-02

    Applicant: IBM

    Abstract: An electronic package (10) including a first circuitized substrate 11 (e.g., printed circuit board) having connected thereto a second, flexible circuitized substrate (e.g., polyimide with chrcme-copper-chrome circuitry thereon). The second substrate is in turn electrically connected to the invention's semiconductor device (e.g., silicon chip), which device in turn is attached to a heat spreader (37) for providing effective heat transference from the device to the package's heat sink (33). The heat sink is attached to the first substrate (e.g., using solder). Significantly, the coefficient of thermal expansion of the heat spreader, semiconductor device and adhesive used to connect same are substantially similar in order to provide an effective heat path from the heat-generating device to the corresponding, much larger heat sink.

    3.
    发明专利
    未知

    公开(公告)号:FR2296462A1

    公开(公告)日:1976-07-30

    申请号:FR7537213

    申请日:1975-12-01

    Applicant: IBM

    Abstract: A catalyst solution for making surfaces receptive to the deposition of adherent electroless metal layers includes a complex of a precious metal salt with dimethyl sulfoxide such as, for example, Pd Cl2 . 2(CH3)2 SO together with a group IV metal salt such as, for example, stannous chloride. A process for rendering surfaces, such as glass, receptive to adherent electroless metal layers using the catalyst solution is also provided.

    6.
    发明专利
    未知

    公开(公告)号:DE68921849T2

    公开(公告)日:1995-10-12

    申请号:DE68921849

    申请日:1989-10-28

    Applicant: IBM

    Abstract: Processes are provided for improving the surface properties of polyimide articles, especially of those polyimide articles which contain significant amounts of transimide. The surface of the polyimide is first treated with a base to convert the surface layer of both the polyimides and the transimides to the polyamic salt. Thereafter the surface layer of the converted polyamic salt is treated with an acid to convert the layer to a polyamic acid. This is followed by a cure preferably in infrared radiation at a sufficiently rapid rate to prevent the formation of any significant amounts of transimide and provide only polyimide. Following this treatment metallization is applied to the improved surface layer.

    7.
    发明专利
    未知

    公开(公告)号:DE68921849D1

    公开(公告)日:1995-04-27

    申请号:DE68921849

    申请日:1989-10-28

    Applicant: IBM

    Abstract: Processes are provided for improving the surface properties of polyimide articles, especially of those polyimide articles which contain significant amounts of transimide. The surface of the polyimide is first treated with a base to convert the surface layer of both the polyimides and the transimides to the polyamic salt. Thereafter the surface layer of the converted polyamic salt is treated with an acid to convert the layer to a polyamic acid. This is followed by a cure preferably in infrared radiation at a sufficiently rapid rate to prevent the formation of any significant amounts of transimide and provide only polyimide. Following this treatment metallization is applied to the improved surface layer.

    8.
    发明专利
    未知

    公开(公告)号:DE68914033T2

    公开(公告)日:1994-10-20

    申请号:DE68914033

    申请日:1989-05-13

    Applicant: IBM

    Inventor: ANSCHEL MORRIS

    Abstract: The article comprises a polyimide layer and a layer of a metal benzotriazole above said polyimide layer wherein said metal is selected from the group of copper, silver, and gold, and a layer of metal adjoining said metal benzotriazole layer. The method for forming such an article comprises the steps: providing a layer of a metal benzotriazole adjoining a polyamic acid layer that may be a layer of a polyimide substrate being converted to polyamic acid, wherein said metal is selected from the group of copper, silver and gold; providing a layer of metal adjoining said layer of metal benzotriazole and converting said polyamic acid to polyimide.

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