Abstract:
The fabrication of an optical wiring board is performed in the following manner: A core member 13 for a mirror 22 is pattern-formed on a clad layer 11, and simultaneously, using the core member 13, each alignment mark pattern 14 is formed at any position on the clad layer 11. Further, with positioning in reference to each alignment mark 14, the core pattern 13 is subjected to physical cutting to form a bevel part and a concave part 23. Then, a metallic reflective film 18 is coated on the surface of the bevel part. Thereafter, with positioning in reference to each alignment mark 14, an optical wiring core pattern 20 is formed on the clad layer 11 adjacently to the mirror 22.
Abstract:
A multilayer printed circuit board has an IC chip included in a core substrate in advance and a mediate layer provided on a pad of the IC chip. Due to this, it is possible to electronically connect the IC chip to the multilayer printed circuit board without using lead members and a sealing resin. Also, by providing the mediate layer made of copper on the die pad, it is possible to prevent resin residues on the pad and to improve connection characteristics between the pad and a via hole and reliability.
Abstract:
There is disclosed a semiconductor device comprising at least two substrates, at least one wiring being provided in each of the substrates, the substrates being stacked such that major surfaces on one side of each thereof oppose each other and the wirings being connected between the major surfaces, and a plurality of connecting portions being provided adjacent to each other while connected to each wiring on the major surfaces opposing each other, at least one of the connecting portions provided on the same major surface being formed smaller than the adjacent other connecting portion, the connecting portions being provided at positions opposing each other one to one on the major surface, the connecting portions being connected so that the wirings are connected between the major surfaces, one connecting portion of a pair of the connecting portions connected one to one being formed smaller than the other connecting portion.
Abstract:
The present invention relates to a multilayer ceramic board and manufacturing method thereof. The multilayer ceramic board includes: a ceramic stacked structure in which multiple ceramic layers are stacked and interconnected to one another through vias; diffused reflection preventing patterns which expose the vias provided on each of the uppermost ceramic layer and the lowermost ceramic layer, and are disposed on each of a top surface and a bottom surface of the ceramic stacked structure; and contact pads which are electrically connected to the vias exposed by the diffused reflection preventing patterns.
Abstract:
The invention relates to a method for connecting at least two printed circuit board modules to form a printed circuit board panel by means of a virtual panel. The method for connecting printed circuit board modules uses positioning tags and counterparts thereof, which align the printed circuit board modules to a target location on the printed circuit board panel.
Abstract:
An electronic module capable of easily determining connection reliability of an ACF connection portion is provided. Electrode wirings of a board serving as an electronic parts of a display panel are connected with ACF bonding wirings of an FPC through an ACF to make electrical connection between the FPC and the board. Two branch portions branched from each of the ACF bonding wirings extend to an edge of the FPC. Low resistance measurement of the connection portion can be performed using the electrode wiring of the board and the branch portions, so whether or not the ACF connection portion is faulty can be determined.
Abstract:
A microelectronic device, a method of fabricating the device, and a system including the device. The device includes: a substrate including a polymer build-up layer, and a passive structure embedded in the substrate. The passive structure includes a top conductive layer overlying the polymer build-up layer, a dielectric layer overlying the top conductive layer, and a bottom conductive layer overlying the dielectric layer. The device further includes a conductive via extending through the polymer build-up layer and electrically insulated from the bottom conductive layer, an insulation material insulating the conductive via from the bottom conductive layer, and a bridging interconnect disposed at a side of the top conductive layer facing away from the dielectric layer, the bridging interconnect electrically connecting the conductive via to the top conductive layer.
Abstract:
The present invention relates to a pin-less registration and inductive heating system involving the use of a pre-alignment station for imaging an initial position of a laminate element, an imaging and computer operation control system for determining a required correction factor between an alignment of the laminate element at the pre-alignment station and a preferred stack orientation for the laminate element, and an alignment and transfer system for securely gripping, transferring, and repositioning a laminate element from a top position to the preferred stack orientation employing a preferred four-axis orientation.
Abstract:
There is provided a laser processing apparatus, a multilayer printed wiring board manufacturing apparatus, and a manufacturing method to form via holes of ultra-fine diameter. The laser beam from the CO2 laser oscillator (60) is converted to the shortened wavelength beam by a tellurium crystal (94) to control diffraction of the laser beam. Simultaneously, when the laser beam is condensed, a limit value of the condensation limit is reduced. Thereby, the spot diameter of laser beam is reduced and a hole for via hole is bored on the interlayer insulation resin on a substrate (10). Therefore, even when the laser beam output is raised to form a deeper hole, the hole diameter is not widened and thereby a hole for a small diameter via hole can be formed.
Abstract:
A Tape Carrier Package (TCP) that is attachable to and detachable from a connector of a Printed circuit Board Assembly (PBA) of a plasma display apparatus that includes a plurality of electrodes, and a plasma display device including the same. The TCP includes an input portion that is attachable to and detachable from the PBA, an output portion that is attachable to and detachable from one of the plurality of electrodes of the plasma display apparatus, and at least one alignment mark, at least a portion of the alignment mark corresponding to or abutting an edge of the input portion.