Abstract:
A method and apparatus for supporting a microelectronic substrate. The apparatus can include a microelectronic substrate and a support member carrying the microelectronic substrate. The apparatus can further include a first connection structure carried by the support member. The first connection structure can have a first bond site configured to receive a flowable conductive material, and can further have at least two first elongated members connected and extending outwardly from the first bond site. Each first elongated member can be configured to receive at least a portion of the flowable conductive material from the first bond site, with none of the first elongated members being electrically coupled to the microelectronic substrate. The assembly can further include a second connection structure that is electrically coupled to the microelectronic substrate and that can include second elongated members extending away from a second bond site. The number of second elongated members can be equal to the number of first elongated members.
Abstract:
A conductive structure having a conductor for carrying a signal at a one or more operating frequencies of the structure, the conductor comprising: at least two electrically conductive strips spaced apart by a dielectric and arranged in parallel to extend from a first node to a second node, the conductive strips being interconnected between the nodes by at least one inter-strip electrically conductive connection through the dielectric; the maximum physical dimension of the or each inter-strip connection and the maximum physical separation of potentially successive inter-strip connections being equal to or less than one quarter of the free space wavelength corresponding to the minimum operating frequency of the structure.
Abstract:
An interposer with a contact well, a layer that isolates one side of the interposer from the other side, for isolations of off gasses, and an optional elastomeric pad and a hard stop layer. Included is a method of making the interposer.
Abstract:
A printed circuit board providing crosstalk compensation. The printed circuit board includes first plated through holes for receiving a first connecting component and second plated through holes for receiving a second connecting component. A signal carrying trace transmits a signal from one of the first plated through holes to one of the second plated through holes. A phase delay control trace is in electrical connection with the one of the first plated through holes. The phase delay control trace affects phase delay of the signal from the one of the first plated through holes to the one of the second plated through holes.
Abstract:
A method and apparatus for repair of a multi-chip module, such as a memory module, is provided, where at least one redundant or auxiliary chip attach location is provided on the substrate of the multi-chip module. The auxiliary chip attach location preferably provides contacts for attachment of more than one type of replacement semiconductor chip. Accordingly, when one or more chips on the multi-chip module are found to be completely or partially defective, at least one replacement chip can be selected and attached to the auxiliary location to provide additional memory to bring the module back to its design capacity.
Abstract:
A computer motherboard is described. That motherboard includes a memory controller and a memory section. A first trace couples the memory controller to the memory section, and a second trace couples the memory controller to the memory section. The first trace is joined with the second trace at the memory controller, the second trace is routed in parallel with the first trace, and the second trace is longer than the first trace. Also described is a computer system that includes this motherboard and a memory card.
Abstract:
An apparatus and method are described for reducing the timing skew on a printed circuit board including a plurality of conductive traces interconnecting a first node and a second node. At least one section is removed from at least one printed circuit board trace to thereby sever a trace and prevent signals passing from the first node to the second node from following the severed trace. In this manner, signal path length can be adjusted to reduce timing skews in the circuit. Sections are removed from the traces by using a laser, CVD, a router, a plasma or by passing sufficient current through weakened areas of the traces.
Abstract:
A multi-layer electronic circuit board design 10 having selectively formed apertures or cavities 26 which have improved solder-wetting characteristics.
Abstract:
The terminal mounting structure includes a board (21). The structure includes a terminal (26) mounted on the board. The terminal includes a first end (26a) removably connected to a connection component (16, 17, 18). The terminal includes a second end (26b) soldered to the board in a raised position. The terminal includes a bent portion (26d) at intermediate of the terminal and at respective angles relative to respective first and second ends. The structure includes a retaining member (30, 40) facing the board with a space therebetween, and retaining the bent portion.
Abstract:
A suspended transmission line includes a dielectric support layer having a first side and a second side. The conductor is supported between first and second ground planes and includes a first part supported on the first side of the support layer and a second part supported on the second side of the support layer. A third part of the conductor connects the first and second parts at spaced intervals along the conductor. A propagation structure is disposed between the ground planes and operable to substantially contain an electric field generated by a signal transmitted on the conductor.