Abstract:
A circuit board including a first dielectric layer having a first surface and a second surface, a first circuit layer, a second dielectric layer, and a second circuit layer is provided. At least one trench is formed on the first surface, and the first circuit layer is formed on an inside wall of the trench. In addition, the second dielectric layer is disposed in the trench, and covers the first circuit layer. The second circuit layer is disposed in the trench, and the second dielectric layer is located between the first circuit layer and the second circuit layer. A manufacturing method of the circuit board is further provided.
Abstract:
An embodiment is a method and apparatus to construct a shielded cable, wire, or circuit. A first insulator layer is deposited on a first conductor or semiconductor layer. A second conductor or semiconductor layer is deposited on the first insulator layer. A second insulator layer is deposited on the first insulator layer. The second insulator layer covers the second conductor or semiconductor layer and defines a shielded region. A third conductor or semiconductor layer is deposited on the first conductor or semiconductor layer. The third conductor or semiconductor layer covers the first and second insulator layers. At least one of the first, second, and third conductor or semiconductor layers, and the first and second insulator layers is deposited by printing.
Abstract:
An object of the invention is to provide a printed circuit board that has an excellent heat dissipation performance and excellent reliability, and its manufacturing method. The printed circuit board includes: prepregs (2a) and (2b) being cured after each covering the surfaces of a metal plate (1) provided with first throughholes (1a) therein and the inner walls of the first throughholes (1a); prepregs (4a) and (4b) being cured after glass clothes (3a) and (3b) are sandwiched between the prepregs (2a) and (2b), and the prepregs (4a) and (4b), respectively; and second throughholes (8) that connect wiring layers (7a) and (7c), and (7b) and (7d) provided on both surfaces of prepregs (6a) and (6b), respectively. The prepregs (2a) and (2b) and the prepregs (4a) and (4b) are characterized in that they contain inorganic filler. Furthermore, the prepregs (2a) and (2b) and the prepregs (4a) and (4b) may contain elastomer.
Abstract:
Vias for differential signals are typically of a lower impedance than the signal lines connected to them. The noise and reflected signals resulting in impedance mismatch may require circuits to be operated at a frequency far lower than desired. One or more embodiments of the present invention avoid impedance mismatch in circuits and achieve an advance in the art by providing a via with higher impedance through the addition of split ring resonators (SSRs) to each end of the via.
Abstract:
A male connection component (120) for connection with a correspondingly configured female connection component (140) having a recess (144) extending into a main surface (170) of a female Substrate (142) of the female connection component (140), wherein the female connection component (140) comprises a plurality of electrically conductive female contacts (146) which are electrically decoupled from one another and are arranged at different height levels with regard to the main surface (170) of the female Substrate (142), the male connection component (120) comprising a male Substrate (102), a Protrusion (104) protruding from a main surface (160) of the male Substrate (102) and comprising a plurality of electrically conductive male contacts (106) which are electrically decoupled from one another and are arranged at different height levels with regard to the main surface (160) of the male Substrate (102), wherein the male connection component (120) is adapted for connection with the female connection component (140) so that upon connection, each of the plurality of electrically conductive male contacts (106) is brought in contact with one of the plurality of electrically conductive female contacts (146) for providing electric contactation at different height levels, wherein the male Substrate (102) forms at least part of one of a chip, a chip package and a circuit board.
Abstract:
The present invention provides a high frequency detection device that detects a high frequency voltage signal according to a high frequency voltage generated in a power transmission body. The high frequency detection device includes a substrate and a capacitance conductor fixed to the substrate. The capacitance conductor includes a penetration portion and a capacitor electrode. In the penetration portion, the power transmission body is disposed so as to extend along the penetration portion in a state in which the axial direction of the power transmission body and the substrate are substantially orthogonal. The capacitor electrode is provided to be opposed to the power transmission body.
Abstract:
The embodiment of the invention is about a novel via structure which can be incorporated into printed circuit boards, integrated circuit packages, and integrated circuits in order to reduce crosstalk, to improve signal integrity and to achieve EM emission compliance. A 4-layer (2 signal layers and 2 power layers or 2 signal layers and 2 ground layers) circuit board assembly was used for demonstrating the effect of the novel via structure. The same concept can be applied to any multi-layer circuit board. Layers that have an electrical property can be added above, under, or within the basic 4-layer circuit board to achieve a multi-layer circuit board. For 2-layer and 3-layer circuit boards, a deformed version of the proposed via structure based upon the same concept will be needed for a coplanar waveguide configuration.
Abstract:
A drop generator having a via structure configured for electrical and fluidic interconnection. The via structure includes an electrically conductive layer and an electrically insulating layer disposed on the electrically conductive layer.
Abstract:
A method and an apparatus for connecting a coaxial (or a micro coaxial) cable to the bottom side of a printed circuit board (PCB) in order to improve signal integrity of a test circuit. A coaxial or a micro coaxial cable is directly connected to a coaxial cable to the bottom sides of pads located on an exterior later of the PCB.
Abstract:
A method of manufacturing a printed wiring board (10) includes the steps of: forming a core including carbon fiber reinforced plastic having a primary through hole (3a); forming a first adhesive member (4a) on a lower surface of the core to cover the primary through hole (3a); charging an insulating member into the primary through hole (3a); forming a second adhesive member (4b) on an upper surface of the core; forming a third adhesive member (6a) below the first adhesive member (4a); forming a fourth adhesive member (6b) on the second adhesive member (4b); and forming interconnections on the core.