11.
    发明专利
    未知

    公开(公告)号:DE68910215T2

    公开(公告)日:1994-05-05

    申请号:DE68910215

    申请日:1989-05-24

    Applicant: IBM

    Abstract: A TAB package is described which includes a flexible dielectric film (30) with an outer edge, back and front faces and an aperture therein. The front face, as is conventional, is provided with a plurality of beam leads (31), which leads extend into the aperture and connect to a semiconductor chip (34). Thermally conductive body means (10) is provided which has a well (18) formed therein, the well defined by a lip (22) comprising the outer rim (20) of the body means. The back face of the semiconductor chip is thermally connected to the thermally conductive body means (10) and the flexible dielectric film (30) is formed to conform to the surface of the well and to extend over its rim whereby the beam leads also conform to the well and rim structure. The beam leads are thereby made available for electrical connection in the vicinity of the rim. Means (40, 42) are also provided for attaching the outer edge of the film to the thermally conductive body means so as to enable flexure of the film in the event of differential expansion or contraction at connection points.

    Card security and Web sites
    12.
    发明专利

    公开(公告)号:GB2346239A

    公开(公告)日:2000-08-02

    申请号:GB0001092

    申请日:2000-01-19

    Applicant: IBM

    Abstract: A method and system are disclosed for accessing personal Web site or executing electronic commerce securely in a smart Java card. A personal Web site which includes personal or private information is stored in a personal smart Java card. Before a user can access the Web site stored in the smart Java card, the user is validated by one or a combination of PIN, facial images, hand images, eye image, voice characteristics, and finger prints. Further, an encryption engine embedded in the smart Java card decodes and compares the entered PIN combined with a secure key or security certificate to verify the user's identity. Before the bank account can be accessed freely by the user, the bank's computer system checks the combined secure data to ensure the authenticity of the card and the user's identity with multiple check points using Internet security protocols via Web browses.

    14.
    发明专利
    未知

    公开(公告)号:DE68918380T2

    公开(公告)日:1995-03-30

    申请号:DE68918380

    申请日:1989-07-12

    Applicant: IBM

    Abstract: An integrated circuit chip package is described wherein the chip (18) has an active face including a plurality of input and output pads (30). The chip is mounted face down on a plurality of flexible inner beam leads. The package's outer beam leads are bonded to pads residing on an underlying circuit board (26). A convective heat sink (32) is thermally mounted to the reverse face of the chip, which heat sink is formed from folded thin metal sheet. The heat sink exhibits both minimum mass, and optimum cooling efficiency. The minimum mass reduces the cost of the heat sink through material savings and minimizes the possibility of damage to the package caused by sudden accelerations. The heat sink, in addition to itself being somewhat flexible, is provided with mounting points (60) which are physically connected to the underlying circuit board via resilient connecting means.

    17.
    发明专利
    未知

    公开(公告)号:DE68910215D1

    公开(公告)日:1993-12-02

    申请号:DE68910215

    申请日:1989-05-24

    Applicant: IBM

    Abstract: A TAB package is described which includes a flexible dielectric film (30) with an outer edge, back and front faces and an aperture therein. The front face, as is conventional, is provided with a plurality of beam leads (31), which leads extend into the aperture and connect to a semiconductor chip (34). Thermally conductive body means (10) is provided which has a well (18) formed therein, the well defined by a lip (22) comprising the outer rim (20) of the body means. The back face of the semiconductor chip is thermally connected to the thermally conductive body means (10) and the flexible dielectric film (30) is formed to conform to the surface of the well and to extend over its rim whereby the beam leads also conform to the well and rim structure. The beam leads are thereby made available for electrical connection in the vicinity of the rim. Means (40, 42) are also provided for attaching the outer edge of the film to the thermally conductive body means so as to enable flexure of the film in the event of differential expansion or contraction at connection points.

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