摘要:
A method of fabricating interconnection members for a microelectronic device. An electrically conductive sheet having a uniform thickness is coupled to a first surface of a support substrate. Portions of the conductive sheet are selectively removed so as to leave a plurality of substantially rigid, elongated posts protruding parallel to one another from surface of the support substrate.
摘要:
A semiconductor device including a substrate having a dopant of a first polarity, a first semiconducting structure including a dopant of a second polarity disposed over the substrate, and having substantially planar top and side surfaces. The semiconductor device includes a first junction, formed between the first semiconducting structure and the substrate, having an area wherein at least one lateral dimension is less than about 75 nanometers.
摘要:
A method and circuit board assembly provide a zero interconnection height in a board-to-board interconnect while maintaining efficient space allocation for multiple axis connections by providing a floating connection in one plane thereby enabling a connection in another plane. A method for interconnecting includes aligning a first circuit board having a first plurality of through-holes with a second circuit board having a second plurality of through-holes by matching the first plurality of through-holes with the second plurality of through-holes, the aligning providing an interconnection height of zero between the first circuit board and the second circuit board, aligning at least one pass-through socket with the aligned combination of the first circuit board and second circuit board, the at least one pass-through socket including pass-through socket through-holes, and inserting one or more pins disposed on a pin header through the at least one pass-through socket, the first circuit board and the second circuit board. The method further includes floating one of the first circuit board and the second circuit board prior to inserting the pin header, the floating enabling the first circuit board to interconnect with the second circuit board with a connector aligned along an axis different from the pin header.
摘要:
A multi-layer circuit board comprises: an insulating layer having upper and lower surfaces thereof, and wiring patterns arranged on the upper and lower surfaces of the insulating layer. A ferroelectric layer has a dielectric constant larger than that of the insulating layer and has upper and lower surfaces. The ferroelectric layer is arranged in the insulating layer in such a manner that the upper and lower surfaces of the ferroelectric layer coincide with the upper and lower surfaces of the insulating layer, respectively. A pair of electrode films are formed on the upper and lower surfaces of the ferroelectric layer, respectively, to define a capacitor incorporated in the multi-layer circuit board.
摘要:
On carrying out a hole filling method for a printed wiring board having an interlayer connection hole, first and second printed wiring boards (1 and 2) are prepared, each of which has the interlayer connection hole. The first printed wiring board is placed on a bottom plate (7). On the first printed wiring board, a first hole guide plate (8) having a first guide hole formed at a position corresponding to the interlayer connection hole of the first printed wiring board is placed in such a manner that the first guide hole is coincident with the interlayer connection hole of the first printed wiring board. A hole filling resin (9) is superposed on the first hole guide plate. On the hole filling resin, a second hole guide plate (10) having a second guide hole formed at a position corresponding to the interlayer connection hole of the second printed wiring board is placed. On the second hole guide plate, the second printed wiring board is placed in such a manner that the interlayer connection hole of the second printed wiring board is coincident with the second guide hole of the second hole guide plate. A top plate (11) is placed on the second printed wiring board to form a stacked assembly which includes the first printed wiring board, the first hole guide plate, the hole filling resin, the second hole guide plate, and the second printed wiring board between the bottom plate and the top plate. The stacked assembly is vacuum-pressed between the bottom plate and the top plate to simultaneously fill the interlayer connection holes of the first and the second printed wiring boards with a part of the hole filling resin.
摘要:
A technique for assembling a multi-chip module does not necessitate more than one pass through a die attach machine. The technique involves attaching a smaller die to a larger die without using a die attach machine. The larger die may be attached to a support structure using a die attach machine. In some embodiments, the larger die is affixed to the support structure first and in other embodiments, the smaller die is affixed to the larger die first.
摘要:
A process for fabricating thin multi-layer circuit boards. A substrate is disposed over a heat-accumulating block adjacent thereto so that it is uniformly heated from the back side thereof during the pre-baking.
摘要:
A multi-layer printed-wiring board including a substrate having a plurality of wiring pattern layers sequentially transferred thereon, each wiring pattern layer containing an electrically conductive layer and an electrically insulating layer. The wiring pattern layers are attached to the substrate through an electrically insulating layer.
摘要:
A method for contacting at least one printed circuit board or at least one punched grid and at least one hybrid includes the steps of: forming contact elements in a contacting foil, positioning the contacting foil over the hybrid in such a way that the contact elements are arranged at preselected positions between the printed circuit traces of the hybrid and the printed circuit traces of the printed circuit board, and etching away at least a portion of the contacting foil, such that the contact elements are at least partially freely accessible.
摘要:
Reflow soldering of a variety of circuit boards (9, 11, 15) in a variety of sizes and shapes to assigned locations on the base or carrier (13) of the electronic module housing (3) is simplified by eliminating custom made metal blocks previously used to clamp the circuit boards against the carrier metal. Instead, the solder-backed circuit boards are placed in assigned positions in the module housing and the inside volume of that housing is filled (22) with particulate, such as small beads (17), covering the circuit boards, but leaving the edges of the upstanding metal shields (5 and 7) visible. A plate (21) backed foam sheet (19) is placed over the module housing (24) and clamped down (26), pressing against the beads. The clamped assembly is then heated (28) to reflow the solder, soldering the circuit boards in place.