The present disclosure relates to a structure and a method for filling a via hole formed in a multilayer printed circuit board, and more particularly, to a structure and a method for filling a via hole formed in a multilayer printed circuit board, the structure and method enabling high-current transmission even in a narrow space in such a way that a via hole formed when a typical multilayer printed circuit board is manufactured is first filled with Cu and Ag plating, and the remaining vacant space is completely filled with a solder cream, thereby increasing the amount of conductors.

A multi-layer circuit board is formed by positioning a top sub having traces on at least one side to one or more pairs of composite layers, each composite layer comprising an interposer layer and a sub layer. Each sub layer which is adjacent to an interposer layer having an interconnection aperture, the interconnection aperture positioned adjacent to interconnections having a plated through via or pad on each corresponding sub layer. Each interposer aperture is filled with a conductive paste, and the stack of top sub and one or more pairs of composite layers are placed into a lamination press, the enclosure evacuated, and an elevated temperature and laminated pressure is applied until the conductive paste has melted, connecting the adjacent interconnections, and the boards are laminated together into completed laminated multi-layer circuit board.

A method of making printed circuit board vias using a double drilling and plating method is disclosed. A first hole is drilled in a core, the first hole having a first diameter. The first hole is filled and/or plated with an electrically conductive material. A circuit pattern may be formed on one or two conductive layers of the core. A multilayer structure may then be formed including a plurality of cores that also include pre-drilled and plated via holes, wherein at least some of the pre-drilled and plated via holes are aligned with the first hole. A second hole is then drilled within the first hole and the aligned pre-drilled and plated holes, the second hole having a second diameter where the second diameter is smaller than the first diameter. A conductive material is then plated to an inner surface of the second hole.

A method for manufacturing a multilayer wiring board is disclosed. The Method comprises a step (I) of preparing printed wiring boards having both electrical connection pads for establishing an electrical connection between the boards and non-connection pads for not establishing an electrical connection between the boards on the same plane; and a lamination step (II) of overlaying the boards so that the electrical connection pads face each other, and laminating the boards so that the boards are bonded to each other through a conductive material provided between the facing electrical connection pads. In the step (I), to at least one of surfaces faced when the boards are overlaid in the step (II), an insulating film having through holes formed in positions corresponding to the electrical connection pads on the surface is attached (Ia), and the conductive material is provided in the through holes (Ib).

A radio frequency connector includes a substrate, a first ground plane disposed upon the substrate, a signal conductor having a first contact point, with the first contact point being configured to electrically mate with a second contact point, and a first ground boundary configured to electrically mate with a second ground boundary, with the first ground boundary being formed as an electrically continuous conductor within the substrate.

The present disclosure discloses a printed circuit board, a method for manufacturing the same and an electronic device. The PCB includes: a core board assembly including a first core board and a second core board which are stacked together, wherein the second core board includes a metal layer formed on a side of the second core board oriented towards the first core board, and the first core board defines a through slot extending through the first core board; a radiator, disposed in the through slot; and a conductive adhering layer, disposed between the metal layer of the second core board and the radiator, wherein the conductive adhering layer is configured to electrically connect the radiator and the metal layer. The present disclosure connects the radiator directly with the metal layer. The implementation of the present disclosure may help cooling the metal layer to improve the cooling performance of the PCB.

A printed circuit board comprises an epoxy-containing member, a first copper pattern disposed adjacent to the epoxy-containing member, and a first adhesion promoter layer interposed between the epoxy-containing member and the first copper pattern.

A multi-layer circuit board is formed by positioning a top sub having traces on at least one side to one or more pairs of composite layers, each composite layer comprising an interposer layer and a sub layer. Each sub layer which is adjacent to an interposer layer having an interconnection aperture, the interconnection aperture positioned adjacent to interconnections having a plated through via or pad on each corresponding sub layer. Each interposer aperture is filled with a conductive paste, and the stack of top sub and one or more pairs of composite layers are placed into a lamination press, the enclosure evacuated, and an elevated temperature and laminated pressure is applied until the conductive paste has melted, connecting the adjacent interconnections, and the boards are laminated together into completed laminated multi-layer circuit board.

A method of manufacturing a multilayer board includes forming conductor patterns on four or more insulating base material layers, forming a multilayer body by stacking the insulating base material layers in a state in which the conductor patterns face each other with prepreg layers therebetween, and heat-pressing the multilayer body. In a state before the step of heat-pressing, among the prepreg layers, a thickness of an outermost prepreg layer is larger than a thickness of a prepreg layer other than the outermost prepreg layer.

A method of manufacturing a multilayer substrate includes preparing a plurality of substrates, stacking the substrates with bonding sheets interposed, and a first bonding process of bonding the substrates to each other by partially heating the stacked substrates by a heater and partially melting the bonding sheet. Each of the substrates is provided with a through-hole and a metal film covering an inner peripheral surface of the through-hole. In the first bonding process, the metal film is heated by the heater and heat is transferred from the heater to the bonding sheet via the metal film.