Abstract:
A wiring board includes a first insulation layer, first conductive patterns formed on the first insulation layer and including first mounting pads positioned to mount a semiconductor element, a wiring structure positioned in the first insulation layer and including a second insulation layer, second conductive patterns formed on the second insulation layer, and second mounting pads connected to the second conductive patterns, and third mounting pads formed on the first insulation layer above the second mounting pads and connected to the second mounting pads such that the third mounting pads are positioned to mount the semiconductor element and are set off from the second mounting pads toward the semiconductor element.
Abstract:
A combined printed wiring board includes a multilayer printed wiring board having an outermost insulation layer, and a wiring film fixed to a portion of the outermost insulation layer of the multilayer printed wiring board. The wiring film includes dense-pitch pads formed on a semiconductor-mounting surface of the wiring film, the multilayer printed wiring board has sparse-pitch pads formed on a semiconductor-mounting surface of the multilayer printed wiring board, the dense-pitch pads are formed to facilitate electrical connection between a first semiconductor element and a second semiconductor element, and the sparse-pitch pads are formed to facilitate electrical connection between the multilayer printed wiring board and the first semiconductor element and/or the second semiconductor element.
Abstract:
A wiring board with a built-in electronic component includes a substrate having a cavity, an electronic component accommodated in the cavity and having electrode terminals, an insulating layer formed on the substrate such that the insulating layer is covering the electronic component in the cavity, and via conductors formed through the insulating layer and including first via conductors and second via conductors such that the second via conductors are connected to the electrode terminals of the electronic component, respectively. The via conductors are formed in via formation holes penetrating through the insulating layer, respectively, and the via formation holes include first via formation holes and second via formation holes such that the second via formation holes are exposing the electrode terminals of the electronic component, respectively, and that a second via formation hole has a diameter which is smaller than a diameter of a first via formation hole.
Abstract:
A semiconductor device includes a semiconductor chip and a wiring board formed on the semiconductor chip. The wiring board includes a first insulation layer, first conductive patterns on the first layer, first via conductors formed in the first layer and connecting the first patterns and electrode pads of the chip, respectively, a second insulation layer on the first layer, second conductive patterns on the second layer, and second via conductors formed in the second layer and connecting the first conductive patterns and the second patterns, respectively, each second via conductors has a side surface extending through the second layer such that the side surface has a bent portion which changes inclination of the side surface in depth direction of each second via conductor, and the second patterns are positioned to fan in or out with respect to the electrode pads.
Abstract:
A wiring board with a cavity for a built-in electronic component includes a conductor layer including a conductor circuit layer and a plane layer, and an insulating layer laminated on the conductor layer and having a cavity such that the cavity is forming an exposed portion of the plane layer and formed to mount a built-in electronic component on the exposed portion of the plane layer. The plane layer has a recess structure formed in an outer peripheral portion in the exposed portion of the plane layer.
Abstract:
A wiring substrate includes a first outermost conductor layer, a first outermost insulating layer covering the first conductor layer, a second outermost conductor layer formed on opposite side of the first conductor layer, and a second outermost insulating layer covering the second conductor layer. The first insulating layer has first openings such that the first openings are exposing first conductor pads including portions of the first conductor layer, the second insulating layer has second openings such that the second openings are exposing second conductor pads including portions of the second conductor layer, each of the first conductor pads has a first plating layer recessed with respect to outer surface of the first insulating layer, and each of the second conductor pads has a second plating layer formed flush with outer surface of the second insulating layer or having bump shape protruding from the outer surface of the second insulating layer.
Abstract:
An electronic component includes an insulation layer, an alignment mark positioned on a first surface of the insulation layer, and an adhesive layer including an optically opaque agent and formed on the first surface of the insulation layer or a second surface of the insulation layer on the opposite side with respect to the first surface of the insulation layer. The adhesive layer has an opening portion formed at the position corresponding to the alignment mark such that the opening portion exposes the alignment mark directly or through the insulation layer.
Abstract:
A method for manufacturing a wiring board includes positioning on a first insulation layer a wiring structure including an insulation layer and conductive patterns formed on the insulation layer, forming a second insulation layer on the first insulation layer and the wiring structure such that the wiring structure is interposed between the first insulation layer and the second insulation layer, forming a via conductor through the second insulation layer, and forming conductive patterns on the second insulation layer such that one of the conductive patterns on the second insulation layer is connected to the via conductor in the second insulation layer.
Abstract:
A wiring board includes a first insulation layer, first conductive patterns formed on the first insulation layer, a second insulation layer formed on the first insulation layer and the first conductive patterns and having an opening portion, a wiring structure accommodated in the opening portion of the second insulation layer and including an insulation layer and conductive patterns on the insulation layer, second conductive patterns formed on the second insulation layer; and a via conductor formed in the second insulation layer and connecting one of the first conductive patterns and one of the second conductive patterns.