Abstract:
A component-embedded PCB and a method of manufacturing the PCB are disclosed. Using a method that includes perforating a cavity in a core substrate; inserting a component in the cavity; stacking a film layer over the core substrate; forming at least one post by selectively leaving behind the film layer in correspondence to a position of at least one electrode of the component; covering an insulation layer over the core substrate such that the post penetrates the insulation layer to be exposed at a surface of the insulation layer; and forming at least one via hole by removing the post, can provide increased precision and finer pitch. Also, since laser is not used when processing the vias, damage to the component that may occur due to the laser is prevented. Furthermore, tolerance defects may be decreased, as well as defects caused by residue left after processing.
Abstract:
Disclosed is a ball grid array (BGA) package substrate, in which a wire bonding pad and a solder ball pad are formed on a via hole, making high freedom in design of a circuit pattern and a high density circuit pattern possible, and a method of fabricating the same.
Abstract:
It is an object of the present invention to provide a capacitor layer forming material which is applicable to printed wiring boards manufactured through a high-temperature processing of 300° C. to 400° C. of a fluorine-contained resin substrate, a liquid crystal polymer and the like, and exhibits no deterioration of the strength after a high-temperature heating. In order to achieve the object, a capacitor layer forming material for a printed wiring board which comprises a first conductive layer used for forming a top electrode, a second conductive layer used for forming a bottom electrode and a dielectric layer between the first and second conductive layers, characterized in that for the second conductive layer, a nickel layer or a nickel alloy layer is employed. The nickel layer or the nickel alloy layer as the second conductive layer preferably has a thickness of 10 micron meter to 100 micron meter. Further, the sol-gel method is suitably employed to form the dielectric layer on the nickel layer or the nickel alloy layer constituting the second conductive layer.
Abstract:
A circuit module is mounted with an IC that modulates and demodulates a multicarrier signal. The circuit module has a laminated board, which is provided internally with a plurality of conductive layers laminated having insulating layers in between, and an IC, which is provided with a plurality of ground terminals to be grounded. Of the plurality of conductive layers, a conductive layer provided proximate to the IC configures a ground layer electrically connected to the plurality of ground terminals.
Abstract:
A structural printed wiring board panel includes a multilayer printed wiring board having opposing, outer faces and interlayer interconnects that route RF, power and control signals. Connection areas are formed in or on at least on one face for connecting the interlayer interconnects and any electrical components. A metallic face sheet is secured onto at least one outer face, adding structural rigidity to the multilayer printed wiring board. A metallic face sheet can have apertures positioned to allow access to connection areas. RF components can be carried by a face sheet and operatively connected to connection areas. Antenna elements can be positioned on the same or an opposing face sheet and operatively connected to RF components to form a phased array printed wiring board (PWB) panel.
Abstract:
A circuit device which enables easy formation of a connection part that connects wiring layers to each other, and a manufacturing method thereof are provided. In a method for manufacturing a hybrid integrated circuit device of the present invention, a first resin film is formed so as to cover a first wiring layer. Thereafter, a first through-hole is formed, which penetrates the first resin film and exposes the first wiring layer from a bottom thereof. Next, a second resin film is formed so as to fill up the first through-hole. Moreover, a second through-hole is formed in the second resin film buried in the first through-hole, and a connection part is formed.
Abstract:
Disclosed is a printed circuit board which is advantageous in terms of high capacitance by embedding capacitors comprising polymer capacitor pastes with high-dielectric constant coated on an inner layer of the printed circuit board and then semi-dried to a state of B-stage.
Abstract:
This specification describes techniques for manufacturing an electronic system module. The module includes flexible multi-layer interconnection circuits with trace widths as narrow as 5 microns or less. A glass panel manufacturing facility, similar to those employed for making liquid crystal display, LCD, panels is preferably used to fabricate the interconnection circuits. A multi-layer interconnection circuit is fabricated on the glass panel using a release layer. A special assembly layer is formed over the interconnection circuit comprising a thick dielectric layer with openings formed at input/output (I/O) pad locations. Solder paste is deposited in the openings using a squeegee to form wells filled with solder. IC chips are provided with gold stud bumps at I/O pad locations, and these bumps are inserted in the wells to form flip chip connections. The IC chips are tested and reworked. The same bump/well connections can be used to attach fine-pitch cables. Module packaging layers are provided for hermetic sealing and for electromagnetic shielding. A blade server or supercomputer embodiment is also described.
Abstract:
An electronic package and method of making the electronic package is provided. A layer of dielectric material is positioned on a first surface of a substrate which includes a plurality of conductive contacts. At least one through hole is formed in the layer of dielectric material in alignment with at least one of the plurality of conductive contacts. A conductive material is positioned in the at least one through hole substantially filling the through hole. At least one conductive member is positioned on the conductive material in the through hole and in electrical contact with the conductive material. The electronic package improves field operating life of an assembly which includes a semiconductor chip attached to a second surface of the substrate and a printed wiring board attached to the conductive members.
Abstract:
A method for forming stacked via-holes on a printed circuit board includes the steps of: providing a printed circuit board having a conductive trace formed on a side surface thereof; forming a first copper-clad laminate on the side surface having the conductive trace; forming a number of first copper micro-via in a copper layer of the first copper-clad laminate; forming a second copper-clad laminate on the surface of the copper layer having the first copper micro-via of the first copper-clad laminate; forming a number of second copper micro-via in a copper layer of the second copper-clad laminate by a first laser on the basis of the first copper micro-via, each second copper micro-via being located corresponding to its correspondingly first copper micro-via; and removing corresponding resin layer portions of the first and second copper-clad laminates, using a second laser, to yield the respective stacked via-holes.