摘要:
A method for manufacturing a multilayer printed wiring board includes preparing a metal layer having metal member portions and connector portions connecting the metal member portions, forming laminated multilayer structures having electronic components and the metal member portions, respectively, forming cut penetrating holes in the connector portions of the metal layer, respectively, such that the connector portions of the metal layer are cut, and forming interlayer insulation layers on the laminated multilayer structures such that the laminated multilayer structures are interposed between the interlayer insulation layers. The forming of the interlayer insulation layers includes filling the cut penetrating holes with a resin derived from one or more interlayer insulation layers on the laminated multilayer structures.
摘要:
A printed wiring board includes a substrate, a first buildup formed on a first surface of the substrate and including the outermost conductive layer, and a second buildup layer formed on a second surface of the substrate and including the outermost conductive layer. The outermost layer of the first buildup has pads positioned to connect a semiconductor component, the first buildup has a component mounting region directly under the component such that the outermost layer of the first buildup has a portion in the region, the outermost layer of the second buildup has a portion directly under the region, and the portions satisfy the ratio in the range of from 1.1 to 1.35, where the ratio is obtained by dividing a planar area of the portion of the second buildup by a planar area of the portion of the first buildup.
摘要:
A wiring board with a built-in electronic component includes a core substrate having a penetrating hole formed in the core substrate, an electronic component accommodated in the penetrating hole in the core substrate, a conductive pattern layer formed on a first surface of the core substrate and including a first conductive pattern and a second conductive pattern, and an interlayer insulation layer formed over the conductive pattern layer and the first surface of the core substrate. The second conductive pattern is formed adjacent to a periphery of the penetrating hole and contoured such that a sheet for positioning the electronic component in the penetrating hole is laminated horizontally with respect to the first surface of the core substrate over the penetrating hole.
摘要:
A printed wiring board includes a core substrate, a first conductive layer on a first surface of the substrate, a second conductive layer on a second surface of the substrate, and a through-hole conductor connecting the first and second conductive layers. The substrate has an insulation structure and a metal layer, the metal layer has opening through which the conductor passes and has side wall recessed into the metal layer and forming the opening, the structure has first resin layer on one side of the metal layer, second resin layer on the opposite side and filler filling the opening, the conductor has first portion in the first layer and second portion in the second layer, the first and second portions are connected in the filler, the first portion is tapered from the first toward second conductive layers, and the second portion is tapered from the second toward first conductive layers.
摘要:
A method for manufacturing a board with a built-in electronic element, includes providing a support substrate including a support base and a metal foil, forming a protective film made of a metal material on the metal foil of the support substrate, forming a conductive pattern made of a metal material on the protective film by an additive method, placing an electronic element on the support substrate with the conductive pattern such that a surface of the electronic element where a circuit is formed faces the conductive pattern, covering the electronic element with an insulative resin, etching away the metal foil using a first etching solution such that the protective film is not dissolved by the first etching solution or that the protective film has an etching speed which is slower than an etching speed of the metal foil, and electrically connecting terminals of the electronic element and a part of the conductive pattern.
摘要:
A wiring board including a core substrate made of an insulative material and having a penetrating portion, a first interlayer insulation layer formed on the surface of the core substrate, a first conductive circuit formed on the surface of the first interlayer insulation layer, a first via conductor formed in the first interlayer insulation layer, and an electronic component accommodated in the penetrating portion of the core substrate and including a semiconductor element, a bump body mounted on the semiconductor element, a conductive circuit connected to the bump body, an interlayer resin insulation layer formed on the conductive circuit, and a via conductor formed in the interlayer resin insulation layer. The first via conductor has a tapering direction which is opposite of a tapering direction of the via conductor in the electronic component.
摘要:
A method of manufacturing an interposer including forming an inorganic insulating layer over a support substrate, forming a first wiring in or on a surface of the inorganic insulating layer, forming an organic insulating layer over the inorganic insulating layer and the first wiring, forming a second wiring on the organic insulating layer, and forming a conductor portion connecting the second wiring and the first wiring.
摘要:
A circuit wiring board including a wiring substrate, and a heat resistant substrate accommodated in the wiring substrate and having a thermal expansion coefficient in a range between 3 ppm to 10 ppm and including a core substrate and a built-up wiring layer formed over the core substrate, the built-up wiring layer including conductive layers, interlayer resin insulating layers and a via hole conductor connecting the conductive layers through one of the interlayer resin insulating layers.
摘要:
An interposer includes an inorganic insulating layer, a first wiring formed in or on a surface of the inorganic insulating layer, an organic insulating layer formed over the inorganic insulating layer and on the first wiring, a second wiring formed on the organic insulating layer, and a conductor portion connecting the first wiring and the second wiring.
摘要:
A printed circuit board according to the present invention is a printed circuit board (4) including a component mounting pin (1) made of a metal wire to connect with a semiconductor chip (10). The semiconductor chip (10) is a surface mounting type semiconductor chip having an electrode pad on its mounting surface for use in a flip-chip mounting system. The component mounting pin (1) is formed by using wire-bonding technology. This printed circuit board (4) is able to decrease malconnections or disconnection caused by a difference between the coefficients of thermal expansion of the semiconductor chip (10) and the printed circuit board (4).