A method for manufacturing a circuit board, includes obtaining a second laminated body by laminating, in this order, an uncured second insulating substrate and a resin film on a second surface opposite to a first surface of a cured first insulating substrate of a first laminated body, and performing thermocompression bonding thereon. The first laminated body includes the first insulating substrate and a metal layer that is formed into a pattern shape on the first surface of the first insulating substrate. A third laminated body is obtained by forming a hole that reaches the metal layer, in the resin film, the second insulating substrate, and the first insulating substrate, from a resin film side of the second laminated body, filling conductive paste into the hole, and then peeling off the resin film. Thermocompression bonding is performed by stacking one third laminated body and another third laminated body.

A component-embedded substrate includes: a resin substrate having a mount surface and a peripheral surface surrounding a perimeter of the mount surface; a first mounted component mounted on the mount surface; a second mounted component mounted on the mount surface and spaced from the first mounted component; and a first embedded chip-type electronic component disposed in the resin substrate. The first embedded chip-type electronic component is located close to the peripheral surface of the resin substrate. The mount surface includes: a first region located between the first and second mounted components and extending along a cross direction crossing an arrangement direction along which the first and second mounted components are arranged with respect to each other; and a second region located outside the first region. The first embedded chip-type electronic component is arranged to extend in the first and second regions as seen from above the mount surface.

A conductor of the invention is in a form of a conductive convex portion in a laminated wiring member and includes a conductive material and a liquid repellent, in which the conductive material is in a form of metal particles, the liquid repellent is a fluorine-containing compound adapted to form a self-assembled monomolecular film. The conductor has a surface energy in a range from more than 30 mN/m to 80 mN/m. The conductor of the invention is exemplified by the conductive convex portion in the laminated wiring member and functions as a VIA post in the laminated wiring member.

A printed circuit board (PCB) includes: a substrate; and a circuit pattern disposed on the substrate, wherein the circuit pattern includes a first seed layer disposed on the substrate and including a nitride, and a metal layer disposed on the first seed layer.

A circuit board includes a plurality of first insulating base materials and a plurality of second insulating base materials that are alternately laminated, a first metal layer being formed into a pattern shape on a first surface of the first insulating base material, and a second metal layer being formed into a pattern shape on a second surface of the first insulating base material. The first metal layer is formed into a trapezoidal shape that is large in diameter on a first surface side of the first insulating base material. The second metal layer is formed into a trapezoidal shape that is large in diameter on a second surface side of the first insulating base material. The first metal layers and the second metal layers are laminated in such a manner that the trapezoidal shapes are alternately oriented.

A circuit board includes an insulating substrate layer, a ground layer, an insulating layer, insulating through holes, a signal transmission layer and a polymer conductive member. The ground layer is disposed between the insulating layer and the insulating substrate layer. The signal transmission layer is disposed on one side of the insulating layer opposite to the ground layer. The insulating through holes penetrate through the signal transmission layer and the insulation layer to connect to the ground layer. The polymer conductive member is disposed within the insulating through holes, and one part thereof is electrically connected to the ground layer, and another part thereof extends outwards from the signal transmission layer.

A method for manufacturing a light-emitting module includes a step of providing a bonded board including a board including, on a first surface, a circuit pattern and wiring pads that are continuous with the circuit pattern and each have bottomed holes and light-emitting segments connected on a second surface of the board with an adhesive sheet interposed therebetween and including an array of light-emitting devices; a step of supplying electrically conductive paste inside the bottomed holes and on portions of the surface of the wiring pad around the bottomed holes through openings of a mask; and a step of performing thermal compression to harden the electrically conductive paste such that the thickness of the electrically conductive paste on the portions of the surface of the wiring pad is smaller than the electrically conductive paste at the timing of being disposed through the openings of the mask.

An ESD protection device includes: a first insulating layer (2a); a second insulating layer (2b) stacked on the first insulating layer (2a); a first via conductor (6a) extending through the first insulating layer (2a) in a thickness direction; a discharge gap portion (10) provided so as to be in contact with the first via conductor (6a), between the first insulating layer (2a) and the second insulating layer (2b); a first wiring line (7a) that is arranged on a surface of the first insulating layer (2a) opposite to the discharge gap portion (10) and that is electrically connected to the first via conductor (6a); and a second wiring line (7b) that is arranged on one surface of the second insulating layer (2b) and that includes a portion facing the first via conductor (6a) with at least the discharge gap portion (10) interposed therebetween.

A wiring substrate is manufactured by attaching an adhesive protective film to a metal-foiled laminate sheet, forming bottomed via holes by partially removing the film and an insulating film, filling conductive pastes into the holes, and peeling the film. A wiring substrate is manufactured by forming an adhesive protective layer so as to cover a patterned metal foil on a metal-foiled laminate sheet, forming bottomed step via holes by partially removing the layer and an insulating film, filling conductive pastes into the holes, and peeling off a protective film. The wiring substrate and the second wiring substrate are laminated in such a way that protruding parts of the pastes come into contact with respective protruding parts of the pastes.

Disclosed is an apparatus and methods for making same. The apparatus includes a first insulating layer, a first metal layer disposed on a surface of the first insulating layer, and a metallization structure embedded in the first insulating layer. The metallization structure occupies only a portion of a volume of the first insulating layer. The metallization structure has a line density greater than a line density of the first metal layer.