Abstract:
An electroplating process of electroplating an electrically conductive substrate is described. The process includes electroplating intermittently to a predetermined plating thickness using the substrate surface as a cathode and a plating metal as an anode at a constant voltage between the anode and the cathode by repeating application of a voltage between a cathode and an anode and interruption of the application alternately. It is described that a voltage time/interruption time ratio is 0.1 to 1.0, a voltage time is not longer than 10 seconds, and an interruption time is not less than 1 x 10-12 seconds.
Abstract:
A method for manufacturing a substrate with a metal film includes preparing an insulative substrate having the first surface and the second surface on the opposite side of the first surface, forming in the insulative substrate a penetrating hole having the inner wall tapering from the first surface of the insulative substrate toward the second surface, forming a layer of a composition containing a polymerization initiator and a polymerizable compound on the inner wall of the penetrating hole, irradiating the layer of the composition with energy such that a polymer is formed on the inner wall of the penetrating hole, applying a plating catalyst on the polymer, and forming a plated-metal film on the inner wall of the penetrating hole.
Abstract:
A circuit information acquisition and conversion device, a method, and a program therefor for acquiring a layer configuration, wire traces and shapes of via holes from circuit board design information; optimizing, before conversion into an analysis model, the output target range of the via holes on the basis of a package area, heat density distribution, and power consumption; and creating an analysis model that is suitable for a purpose of the analysis are provided.
Abstract:
An IC chip for a high frequency region, particularly, a packaged substrate in which no malfunction or error occurs even if 3 GHz is exceeded. A conductive layer is formed at a thickness of 30 μm on a core substrate and a conductive circuit on an interlayer resin insulation layer is formed at a thickness of 15 μm. By thickening the conductive layer, the volume of the conductor itself can be increased thereby decreasing its resistance. Further, by using the conductive layer as a power source layer, the capacity of supply of power to an IC chip can be improved.
Abstract:
The present invention provides all organic fully-packaged miniature bandpass filters, baluns, diplexers, multiplexers, couplers and a combination of the above manufactured using liquid crystalline polymer (LCP) and other multilayer polymer based substrates. These devices are manufactured using one or more LCP layers having integrated passive components formed thereon to provide the density and performance necessary for multi-band wireless devices. In the designs involving multiple LCP layers, the LCP layers are separated by prepeg layers. In accordance with an aspect of the present invention, coplanar waveguide, hybrid stripline/coplanar waveguide and/or microstrip topologies are utilized to form the integrated passive components, and the devices can be mass produced on large area panels at least 18 inches by 12 inches with line widths smaller than 10 um.
Abstract:
A printed circuit board including a core substrate including a first resin substrate, a second resin substrate having an opening and a third resin substrate in a multilayer manner while interposing bonding plates, insulating layers and conductive circuit layers alternately laminated on the core substrate, solder bumps formed on an outer surface of the printed circuit board, a first capacitor formed in the opening of the second resin substrate, a conductive pad formed on the first resin substrate and connected to an electrode of the first capacitor, a via hole formed in the first resin substrate and directly connected to the conductive pad and a conductive circuit on the core substrate, and a second capacitor mounted on a surface of the printed circuit board.
Abstract:
A multi-layered interconnect structure and method of formation. In a first embodiment, first and second liquid crystal polymer (LCP) dielectric layers are directly bonded, respectively, to first and second opposing surface of a thermally conductive layer, with no extrinsic adhesive material bonding the thermally conductive layer with either the first or second LCP dielectric layer. In a second embodiment, first and second 2S1P substructures are directly bonded, respectively, to first and second opposing surfaces of a LCP dielectric joining layer, with no extrinsic adhesive material bonding the LCP dielectric joining layer with either the first or second 2S1P substructures.
Abstract:
A multilayer printed wiring board includes a core substrate and a built-up wiring layer formed by alternately layering conductor circuits and insulating resin layers. The built-up wiring layer includes a first surface provided in contact with the core substrate and a second surface opposing the first surface and including a mounting area on which at least one semiconductor device is to be mounted. A first plurality of through-hole conductors is formed in a first portion of the core substrate which corresponds to the mounting area of the second surface, and a second plurality of through-hole conductors formed in a second portion of the core substrate which corresponds to another area of the second surface other than the mounting area. A pitch between the first plurality of through-hole conductors is smaller than a pitch between the second plurality of through-hole conductors. In one aspect, a ratio of pads to through holes directly below a processor core section of the semiconductor device is less that a number of pads to through holes in an area outside the processor core.
Abstract:
A method of forming a circuit board, the method comprising mounting at least one passive component on a first surface of a first laminate material; interconnecting the passive component to contact traces and vias of the first laminate material; and attaching a second laminate material to the first surface of the first laminate material utilizing a lamination process, the second laminate material sheet having at least one of a recess, a through-hole or both formed therein for accommodating the passive component in the second laminate.
Abstract:
A printed circuit board (PCB) having vias for reducing reflections of input signals includes a first signal layer, a second signal layer, one via, an input signal line arranged on the first signal layer, and an output signal line arranged on the second signal layer. The via further includes a drill hole, a first pad, and a second pad. The first pad is electrically connected with the input signal line, and the second pad is electrically connected with the output signal line. An outer diameter of the first pad is smaller than an outer diameter of the second pad.