A circuit board according to the embodiment includes a first substrate including a first insulating layer and a first pad disposed on an upper surface of the first insulating layer; a second substrate including a second insulating layer including a via hole and a metal layer formed on upper and lower surfaces of the second insulating layer and an inner wall of the via hole; a third insulating layer disposed between the first substrate and the second substrate and having a first opening in a region overlapping the via hole; a via filling the via hole and disposed on the first pad exposed through the opening of the third insulating layer; and a second pad disposed on the via and the metal layer disposed on an upper surface of the second insulating layer.

A wiring board includes a base material, a through hole that is formed in the base material, a magnetic member that is embedded in the through hole, and a plating film that covers end faces of the magnetic member exposed from the through hole. The magnetic member includes a conductor wire that is covered by a magnetic body. A wiring board manufacturing method includes forming a through hole in a base material, forming a magnetic member by covering a conductor wire by a magnetic body, embedding the magnetic member in the through hole, and forming a plating film that covers end faces of the magnetic member exposed from the through hole.

Embodiments of the disclosure provide a via structure, a method for preparing the same and a method for regulating impedance of a via structure. The via structure includes a first via, a second via and a first connecting through hole; and a first metal layer a the second metal layer. The first connecting through hole is located between the first via and the second via, and covers part of the first via and part of the second via. The first metal layer and the second metal layer are respectively located in the first via and the second via. The first metal layer and the second metal layer respectively cover a sidewall of the first via and a sidewall of the second via. The first metal layer is separated from the second metal layer through the first connecting through hole.

A semiconductor package according to an embodiment includes a first insulating layer including a through hole; an insulating member disposed in the through hole of the first insulating layer; a first electrode layer disposed on the insulating member; a second insulating layer disposed on the first electrode layer; and a first through electrode passing through the second insulating layer, wherein the first through electrode overlaps the first electrode layer and the insulating member in a vertical direction.

The present disclosure discloses a multilayer circuit board comprising a plurality of metal layers, a blind via and/or a buried via, the multilayer circuit board is capable of transmitting signal between the different metal layers. The blind via has a pad on a non-opening side of the blind via. An upper or lower layer metal layer on the non-opening side of the blind via adjacent to the blind via has a first hole which is located in a position corresponding to the pad on the non-opening side of the blind via in a depth direction of the blind via; and/or an upper and/or lower layer adjacent to the buried via has a second hole which is located in a position corresponding to the pad of an upper and/or lower orifice of the buried via in a depth direction of the buried via.

The present invention discloses an integrated miniature welding plate structure and manufacturing process therefor, which consists of pads with welded dots, welding wires and a welding plate; the manufacturing process of the welding plate consists of following steps: S1. Punching holes, take a SMT patch fixed with several welding plates, punch holes in the welding plates in accordance with the requirements; S2 Electroplating, electroplate a metal layer with electroplating process onto the inner walls of the holes in each of the welding plates; S3. Gluing, pour the insulation colloid into the holes in each of the welding plates, then electroplate a metal layer onto both ends of the colloid; S4. Cutting, cut each of the welding plates off the patch. The beneficial effects are: the welding wires are welded with the welding plates, then the welding plates are connected with the welded dots of the to-be-welded parts, the adopted welding method of the welding plates can improve the overall welding efficiency, ensure the welding strength of the welded dots and improve the welding quality; the structure design of the base plate and vertical plate is adopted for the welding plates, the welding wires are welded onto the vertical plates in a centralized manner, so the status that the welding wires not being parallel and upright can be obviously improved.

Embodiments disclosed herein comprise package substrates and methods of forming package substrates. In an embodiment, a package substrate comprises a core substrate. A hole is disposed into the core substrate, and a via is disposed in the hole. In an embodiment, the via completely fills the hole. In an embodiment, a method of forming a package substrate comprises exposing a region of a core substrate with a laser. In an embodiment, the laser changes the morphology of the exposed region. The method may further comprise etching the core substrate, where the exposed region etches at a faster rate than the remainder of the core substrate to form a hole in the core substrate. The method may further comprise disposing a via in the hole.

An inductor built-in substrate includes a core substrate having openings and first through holes, a magnetic resin filled in the openings and having second through holes, first through-hole conductors formed in the first through holes respectively such that each of the first through-hole conductors includes a metal film, and second through-hole conductors formed in the second through holes respectively such that each of the second through-hole conductors includes a metal film and that the metal film in each of the first through-hole conductors has a thickness that is greater than a thickness of the metal film in each of the second through-hole conductors.

The casing of an electronic control device includes a casing-side contact surface in contact with the end of a printed-circuit board. A cover includes a cover-side contact surface holding the end of the printed-circuit board together with the casing-side contact surface by being in contact with the end of the printed-circuit board. In the printed-circuit board, a held portion held between the casing-side contact surface and the cover-side contact surface is provided with a through-hole via.

A biocompatible electrical connection includes: a substrate; a ferrule having a concentric flange at a first end of the ferrule; a first adhesive; and a second adhesive. The substrate includes a hole having a diameter that is a specified amount larger than an outside diameter of the ferrule forming an annular space between the hole and the ferrule, the first adhesive adheres a first surface of the concentric flange of the ferrule to a first surface of the substrate, and the second adhesive fills the annular space between the hole and the ferrule.