Abstract:
A printed circuit board having a plating pattern buried in a via. The printed circuit board has: an insulating substrate including an electrically insulating resin; a via hole passing through the insulating substrate; a via including a metal layer formed on an inner wall of the via hole and a filler charged in the via hole; a circuit layer including a circuit pattern buried in the insulating substrate and transmitting an electrical signal; and a plating pattern buried in an end of the filler.
Abstract:
A disclosed wiring substrate includes an insulating layer, a recess formed on a surface of the insulating layer, and an alignment mark formed inside of the recess, wherein a face of the alignment mark is roughened, recessed from the surface of the insulating layer, and exposed from the recess.
Abstract:
A multi-layer structure including a base insulating layer and a thin metal film layer (seed layer) is prepared. A plating resist layer is formed to have a prescribed pattern on the upper surface of the thin metal film layer. A metal plating layer is formed on the thin metal film layer exposed by electroplating. Then, the plating resist layer is removed, and the thin metal film layer in the region having the plating resist layer is removed. In this way, a conductive pattern including the thin metal film layer and the metal plating layer is formed. The upper surface of the base insulating layer in the region without the conductive pattern is subjected to roughening treatment. A cover insulating layer is formed on the upper surfaces of the base insulating layer and the conductive pattern. In this way, a printed circuit board is completed.
Abstract:
A stacked mounting structure and a method of manufacturing stacked mounting structure are provided. The stacked mounting structure includes a plurality of members provided with a mounting area which is necessary for installing and operating components to be mounted on at least one principal surface, and an area for connections for signal transfer for operating the components to be mounted, and an electroconductive member which is disposed on the area for connections between the mutually facing members, and a cross section of the electroconductive member is same as or smaller than the area for connections, and an end portion of the electroconductive member is extended from a principal surface of one member up to a principal surface of the other member, and a height of the electroconductive member regulates a distance of the mounting area.
Abstract:
A device includes an interposer, which includes a substrate; and at least one dielectric layer over the substrate. A plurality of through-substrate vias (TSVs) penetrate through the substrate. A first metal bump is in the at least one dielectric layer and electrically coupled to the plurality of TSVs. A second metal bump is over the at least one dielectric layer. A die is embedded in the at least one dielectric layer and bonded to the first metal bump.
Abstract:
A wiring substrate includes: a substrate layer made of glass or silicon and including: a first surface formed with a first hole; and a second surface formed with a second hole and being opposite to the first surface, wherein the first hole is communicated with the second hole; a connection pad formed in the second hole; a first wiring layer formed in the first hole and electrically connected to the connection pad; a first insulation layer formed on the first surface of the substrate layer to cover the first wiring layer; and a second wiring layer formed on the first insulation layer and electrically connected to the first wiring layer. A diameter of the first hole is gradually decreased from the first surface toward the second surface, and a diameter of the second hole is gradually decreased from the second surface toward the first surface.
Abstract:
A multilayer printed wiring board including a first interlayer resin insulation layer, a pad formed on the first interlayer resin insulation layer, a solder resist layer formed on the first interlayer resin insulation layer and the pad, a protective film formed on a portion of the pad exposed by an opening of the solder resist layer, and a coating layer formed between the pad and the solder resist layer. The pad mounts an electronic component. The coating layer has a metal layer and a coating film. The metal layer is formed on the surface of the pad and the coating film is formed on the metal layer.
Abstract:
A circuit module and a manufacturing method for the same, reduce a possibility that a defect area where an electrically conductive resin is not coated may occur in a shield layer. A mother board is prepared. A plurality of electronic components are mounted on a principal surface of the mother board. An insulator layer is arranged so as to cover the principal surface of the mother board and the electronic components. The insulator layer is cut such that grooves and projections are formed in and on the principal surface of the insulator layer and the insulator layer has a predetermined thickness H. An electrically conductive resin is coated on the principal surface of the insulator layer to form a shield layer. The mother board including the insulator layer and the shield layer both formed thereon is divided to obtain a plurality of circuit modules.
Abstract:
Disclosed herein are a printed circuit board and a method for manufacturing the same. The method for manufacturing a printed circuit board includes: (a) forming at least one plate through hole penetrating through an insulating layer; (b) forming pattern grooves for implementing inner layer circuits on both surfaces of the insulating layer; and (c) filling the plate through hole and the pattern grooves with a conductive material. The method for manufacturing a printed circuit board may provide the printed circuit board having excellent heat radiating characteristics and reduce process cost.
Abstract:
A disclosed wiring substrate includes an insulating layer, a recess formed on a surface of the insulating layer, and an alignment mark formed inside of the recess, wherein a face of the alignment mark is roughened, recessed from the surface of the insulating layer, and exposed from the recess.