Abstract:
An interconnect device is provided with a body through which a plurality of wells has been defined. At least one component having two terminals is provided in one or more of the wells. The component is sealed in its respective well such that the two terminals are accessible on opposite sides of the body. The body corresponds to a Ball Grid Array (BGA) device and is positioned between a BGA device and a printed circuit board (PCB). The component in the well is then inline with a solder ball on the BGA device and a corresponding pad on the PCB. Providing the component in the well frees up surface area on the PCB and also allows for positioning the component closer to a source of a signal. A component in the well is a discrete component having two terminals that may be solderable or made from a conductive pliable material. The terminals may be spring-mounted on the component.
Abstract:
A method and apparatus relating to chip-scale packaging is provided. According to an embodiment of the invention electrical solder bump interconnection between an integrated circuit package and a substrate is replaced by the placement and attachment of discrete SMD components between pads on the integrated circuit and substrate. Said substrate being for example a low-temperature co-fired ceramic such as alumina or a PCB such as FR4. Accordingly discrete SMD capacitors, inductors etc can be packaged with the system design goals of minimizing board real-estate, enhancing performance, and cost addressed in a novel manner without requiring substantial development of new processes by manufacturers. The embodiments of the invention minimizing the parasitic series impedance of decoupling capacitor connections for example whilst allowing a small-form-factor System-in-Package to be realized.
Abstract:
An apparatus comprising a printed circuit board having a front side and a back side, and having therein a plurality of conductive layers, each conductive layer including one or more signal channels; a stub extending from the front side to the back side, the stub being electrically coupled to at least one signal channel; and an impedance matching terminal electrically coupled to the stub and to a ground. A process comprising providing a printed circuit board including a front side and a back side, and having therein a plurality of conductive layers, each conductive layer including one or more signal channels, and a stub extending from the front side to the back side, the stub being electrically coupled to at least one signal channel and being designed to receive a signal from a component attached to the printed circuit board; and coupling an impedance matching terminal to the stub and to a ground.
Abstract:
Disclosed is a method and apparatus for terminating a planar transmission line without the use of a via or an impedance transformer. The invention provides for the termination of a planar transmission line by a thin film termination segment itself terminated in an open circuit and shaped so as to effectively match the impedance of the transmission line. The invention has application to terminating a wide range of planar transmission lines and reduces the complexity and costs over prior art methods.
Abstract:
A peripheral card includes a circuit board, various circuit elements on the circuit board, a set of user terminals, a set of test terminals, and an enclosure that covers a portion of the circuit board and the circuit elements. The enclosure does not cover the user terminals and test terminals. After the peripheral card is tested, the test terminals are covered with a conformal contact coating in order to prevent access to the test terminals.
Abstract:
A wiring board incorporating components, and its producing process, in which the mounting density of components can be enhanced furthermore without sacrifice in reliability. The wiring board incorporating components comprises an electric/electronic component (33) having conductive layers (34, 35) formed in the thickness direction of the board while being buried and not to be exposed to the upper and lower surfaces of the board and a terminal buried in the board to face the buried conductive layer, members (36, 37) provided in the gap between the terminal of the buried electric/electronic component and the conductive layer and connecting the terminal with the conductive layer electrically/mechanically, and upper and lower insulating layers (11, 15) provided to adhere to the buried electric/electronic component from above and below in the thickness direction while covering the outer surface thereof except for the part being connected with the connecting.
Abstract:
A correcting method and a correcting structure for improving the transmission characteristic between circuit components mounted on a printed circuit board when it is not good. A chip part capable of correcting resistance, capacitance and inductance are prepared, and the transmission characteristic of a circuit pattern (3) is improved by exchangeably fitting the chip part between two jumper pins (10) disposed in the circuit pattern or between holders. The circuit constant can be easily and efficiently changed without using any solder, and various functions of a capacitor or a filter can be added to a circuit pattern by changing components constituting a module and combining them.