ALIGNMENT SYSTEM FOR SUBASSEMBLY OF OVERMOLDED PHOTOELECTRIC MODULE

    公开(公告)号:JP2002043342A

    公开(公告)日:2002-02-08

    申请号:JP2001137796

    申请日:2001-05-08

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To provide a method by which positioning of a laminate substrate or other substrates on a mold base is improved. SOLUTION: This alignment system of a photoelectric module has an overmolded chip carrier 26 and positions a substrate in a mold precisely to form an overmold frame 18 on the substrate. Co-operating stand-off pads 70, 71, 72 in a retainer assembly on the overmold frame stabilize an assembly of these components, and provide precise gaps to bond these two components permanently. The retainer assembly 36 has a co-operating feature for positioning an end electric lead of a flexible circuit in an electric pad array on the substrate. A nearby electric lead is protected by a permanent enclosing plate on a nearby edge portion of the flexible circuit and positioned by optic dies and an electric pad on their carriers.

    7.
    发明专利
    未知

    公开(公告)号:AT535832T

    公开(公告)日:2011-12-15

    申请号:AT01931923

    申请日:2001-05-23

    Applicant: IBM

    Abstract: Optical packages and a method of fabricating same, wherein an active optical device can be located relative to a substrate and coupler. The structure includes a substrate having electrical contact pads and alignment pads with precision aligned through-holes for at least one optical fiber. The optical fibers are supported by a housing, or coupler, having alignment pins that are precision located relative to the through-holes in the substrate and the optical fiber. A die, or active optical device, with one or more active optical elements on a first die surface and electrical contacts on a second die surface, is aligned with the electrical pads of the substrate and the active optical elements. The method incorporates the steps of grinding alignment pins into metallic pads and grinding optical fibers in one pass and then aligning the active optical device and the optical fibers by using the surface tension of conductive adhesive liquid. The fibers are then bonded.

    Optical device with chip level precision alignment.

    公开(公告)号:HK1055470A1

    公开(公告)日:2004-01-09

    申请号:HK03107753

    申请日:2003-10-28

    Applicant: IBM

    Abstract: Optical packages and a method of fabricating same, wherein an active optical device can be located relative to a substrate and coupler. The structure includes a substrate having electrical contact pads and alignment pads with precision aligned through-holes for at least one optical fiber. The optical fibers are supported by a housing, or coupler, having alignment pins that are precision located relative to the through-holes in the substrate and the optical fiber. A die, or active optical device, with one or more active optical elements on a first die surface and electrical contacts on a second die surface, is aligned with the electrical pads of the substrate and the active optical elements. The method incorporates the steps of grinding alignment pins into metallic pads and grinding optical fibers in one pass and then aligning the active optical device and the optical fibers by using the surface tension of conductive adhesive liquid. The fibers are then bonded.

    Alignment systems for subassemblies of overmolded optoelectronic modules

    公开(公告)号:GB2370012B

    公开(公告)日:2004-11-03

    申请号:GB0110833

    申请日:2001-05-03

    Applicant: IBM

    Abstract: Alignment systems for optoelectronic modules with overmolded chip carriers include drilled or milled substrate corners for engaging dowel pins to precisely align the substrate in a mold for molding an overmold frame on the substrate. The overmold frame includes slot and trilobe holes for receiving retainer posts to precisely align a retainer assembly on the overmold frame. Cooperating standoff pads on the overmold frame and on the retainer assembly stabilize the assembly of these components and provide a precise gap for receiving an adhesive to permanently attach these two components. The retainer assembly carries optoelectronic components that include a flexible circuit, and a distal end portion of this flexible circuit and walls of a receiving cavity in the overmold frame have cooperating features for precisely aligning distal electrical leads of the flexible circuit with an array of electrical pads on the substrate. A permanent shroud on a proximate end portion of the flexible circuit protects and helps align proximate electrical leads with electrical pads on optic dies and their carriers.

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