Abstract:
Methods and apparatus to couple a device, such as, for example, a surface mount device, with a substrate, such as, for example, a printed circuit, are disclosed. An apparatus, according to one aspect, may include a substrate, a plurality of terminals coupled with the substrate, a conductive bonding material coupled with the plurality of terminals, an electronic device coupled with the conductive bonding material, and a holder that is coupled with the substrate to hold the electronic device. A method, according to one aspect, may include coupling a holder with a substrate such that terminals of the substrate are included in an opening of the holder, mounting an electronic device over the terminals with a conductive bonding material disposed therebetween, heating the conductive bonding material to its melting point, and cooling the conductive bonding material.
Abstract:
An electronic device substrate is formed of a thin-plate reinforcing substrate; an external connection wiring layer stacked on the reinforcing substrate, and comprising an electrical insulation provided on the reinforcing substrate, an opening formed in the electrical insulation, a first conductor pattern and a via-hole conductor provided in the opening and formed integrally with each other; and a second conductor pattern formed on the opposite side of the electrical insulation to the reinforcing substrate, and at least partially electrically connected to the via-hole conductor.
Abstract:
The invention provides a method of mounting an electronic component where an electronic component can be reliably electrically-connected to a substrate. A substrate defines a through-hole that extends through the substrate, from connection electrodes formed on the lower surface of the substrate, to the upper surface of the substrate. A low melting point metal is connected to the connection electrodes and fills the through-hole. A bump and the low melting point metal are alloyed and bonded by heating the low melting point metal while pressing the bump formed on an electrode pad of an electronic component, with respect to a front end of the low melting point metal. The active surface of the electronic component is sealed by the upper surface of the substrate.
Abstract:
A method for modifying or fabricating one or more interposers includes fabricating a fence on a substrate that includes the one or more interposers. The fence may be fabricated on a single surface of the interposer substrate. Alternatively, a fence and associated features may be fabricated on both opposite surfaces of the interposer substrate, for example, by fabricating features on one surface of the substrate, inverting the substrate, and forming features on the opposite surface of the substrate. The fence, a portion thereof, or associated features or portions thereof may be fabricated by selectively consolidating previously unconsolidated material. Such selective consolidation may be effected under control of a program. Additionally, the selective consolidation may occur in conjunction with a machine vision system.
Abstract:
A method of making an interposer having an array of contact structures for making temporary electrical contact with the leads of a chip package. The contact structures may make contact with the leads as close as desired to the body of the chip package. Moreover, the contact structures can be adapted for making contact with leads having a very fine pitch. In one embodiment, the contact structures include raised members formed over a body of the interposer. A conductive layer is formed over each of the raised members to provide a contact surface for engaging the leads of the chip package. In another embodiment, the raised members are replaced with depressions formed into the interposer. A conductive layer is formed on an inside surface of each depression to provide a contact surface for engaging the leads of the chip package. Any combination of raised members and depressions may be used.
Abstract:
A multilayered substrate for a semiconductor device, which has a multilayered substrate body formed of a plurality sets of a conductor layer and an insulation layer, and having a face for mounting a semiconductor element thereon and another face for external connection terminals, the face for mounting a semiconductor device being provided with pads through which the substrate is connected to a semiconductor element to be mounted thereon, and the face for external connection terminals being provided with pads through which the substrate is connected to an external electrical circuit, wherein a reinforcing sheet is respectively joined to the face for mounting a semiconductor element thereon and the face for external connection terminals of the multilayered substrate body.
Abstract:
In one embodiment, a laminated printed circuit board translator is provided. In some embodiments, the translator includes a receiving board adapted to receive a pin, the receiving board includes a plated via extending through the receiving board and has a hole for receiving a pin. An interface board laminated with the receiving board has a controlled depth via extending through it to contact a conductive trace. The conductive trace extends between the receiving board and the interface board to connect the plated via of the receiving board with the controlled depth via of the interface board. The controlled depth via is configured so that it is capable of being plated through a single sided drilled opening in the interface board. Some embodiments have a pad on the interface board connected to the controlled depth via.
Abstract:
A circuit structural body includes a printed circuit board having a conductive pattern constituting a power circuit including a semiconductor switching element and disposed on one surface of the printed circuit board, and a conductive pattern constituting a control circuit for controlling the semiconductor switching element and disposed on the other surface of the printed circuit board. The printed circuit board has a through-hole for mounting the semiconductor switching element to both of the conductive patterns. The circuit structural body can be manufactured by a method including the step of laminating a reinforcing plate to one surface of the printed circuit board and the step of mounting the semiconductor switching element from the opposite side to the reinforcing plate.
Abstract:
An interposer includes a fence that orients or aligns a semiconductor device, such as a flip-chip type semiconductor device, with an interposer substrate. The fence may include edges that are configured to progressively align a semiconductor device with the interposer substrate. The fence may also include one or more laterally recessed regions to facilitate rough alignment of a semiconductor device with the interposer substrate. The fence may comprise a unitary structure or a plurality of mutually adhered regions.
Abstract:
Temporary connections to spring contact elements extending from an electronic component such as a semiconductor device are made by urging the electronic component, consequently the ends of the spring contact elements, vertically against terminals of an interconnection substrate, or by horizontally urging terminals of an interconnection substrate against end portions of the spring contact elements. A variety of terminal configurations are disclosed.