Abstract:
In one embodiment, a printed circuit board (12) includes a plurality of insulating layers (26) in which an aperture is formed through some of the layers. A resistive plug (28) at least partially fills the aperture and contacts respective conductive members (18, 20, 30) at each end of the resistive plug to form a resistive via (24) that traverses partially through the printed circuit board. In another embodiment, a printed circuit board (12) includes a plurality of insulating layers (26) in which an aperture is formed through at least some of the layers. A dielectric plug (32) at least partially fills the aperture and contacts respective conductive members (18, 20, 34) at each end of the dielectric plug to form a capacitive via (26) that traverses at least partially through the printed circuit board.
Abstract:
A printed circuit board (100) and a method (302,304,306,308) for imbedding a battery (106) in the printed circuit board are disclosed. The method includes connecting (302) the battery to a first inner pad (116) and a second inner pad (118) on an inner core layer (104) and forming a first battery contact (122) between a first outer pad (108) and the first inner pad (116). The method also includes electrically isolating (306) the first battery contact (122) and forming a second battery contact (124) between a second outer pad (110) and the second inner pad (118).
Abstract:
The present invention provides a number of techniques for laminating and interconnecting multiple high-layer-count (HLC) substrates to form a multilayer package or other circuit component. A solder bump may be formed on the conductive pad of at least one of two HLC substrates. The solder bump preferably is formed from an application of solder paste to the conductive pad(s). An adhesive film may be positioned between the surfaces of the HLC substrates having the conductive pads, where the adhesive film includes an aperture located substantially over the conductive pads such that the conductive pads and/or solder bumps confront each other through the aperture. The HLC substrates then may be pressed together to mechanically bond the two substrates via the adhesive. The solder bump(s) may be reflowed during or after the lamination to create a solder segment that provides an electrical connection between the two conductive pads through the aperture in the adhesive film.
Abstract:
Circuit boards to which such high speed differential signal connectors are mounted are disclosed and they have a particular pattern of termination traces, commonly taking the form of plated vias extending through the circuit board. These vias are arranged in a triangular pattern and the ground reference plane of the circuit board is provided with voids, one void being associated and encompassing a pair of the differential signal vias of a single terminal triplet. This reduces the capacitance of the signal vias and thereby increases the impedance of the circuit board within the launch area to lessen impedance discontinuities in the connector-circuit board interface.
Abstract:
A multilayer wiring board (6) manufactured at low cost comprises an insulating sheet(1) having a through hole (100) and a thin−film wiring layer (2) formed on the insulating sheet. The board has a high reliability, and a high−density wiring can be provided on the board. A through hole is made in a glass sheet (1) by sand blasting, a wiring pattern (120) and an interlayer insulating layer (110) are formed on the glass sheet, and the through hole is filled with a plating wiring or a conductive material (101), thus fabricating a multilayer wiring board.
Abstract:
The invention relates to a fitted and soldered printed circuit board (1) of a flat assembly on which an additional component (2) is subsequently added and soldered. The printed circuit board has two solder-free fixing holes (7, 8) to fix the ends of the leads (4, 5) of the additional component (2), between which two interspaced soldering pads (10, 11) are placed, enabling said additional component (2) to be fixed onto the printed circuit board (1) and to be electrically connected. The leads (4, 5) have an area (12) running parallel to the surface of the printed circuit board (3) and a second area (14) running perpendicular to said surface, which are inserted into both fixing holes (7, 8).
Abstract:
Communications plugs are provided which include a printed circuit board having a plurality of elongated conductive traces and a plurality of plug blades. Each plug blade has a first section that extends along a top surface of the printed circuit board and a second section that extends along a front edge of the printed circuit board. Additionally, each plug blade may have a thickness that is at least twice the thickness of the elongated conductive traces. The plug blades may be low profile plug blades that are manufactured separately from the printed circuit board.