摘要:
A multilayer printed wiring board includes a core base material having a penetrating portion, a low-thermal-expansion substrate accommodated inside the penetrating portion of the core base material and having a first surface for mounting a semiconductor element and a second surface on the opposite side of the first surface, a first through-hole conductor provided inside the low-thermal-expansion substrate and provided for electrical connection between the first surface and the second surface of the low-thermal-expansion substrate, a filler filled in a gap between the low-thermal-expansion substrate and an inner wall of the core base material, and a wiring layer formed on at least one of the first surface and the second surface of the low-thermal-expansion substrate and having a resin insulation layer and a conductive layer. The wiring layer has a via conductor connecting the first through-hole conductor and the conductive layer.
摘要:
A printed wiring board includes a capacitor including a dielectric body having a first surface and a second surface, a first electrode provided on the first surface of the dielectric body, and a second electrode provided on the second surface of the dielectric body. The first electrode has an area facing and being smaller than the first surface of the dielectric body, and the second electrode has an area facing and being larger than the second surface of the dielectric body.
摘要:
A printed wiring board including a core substrate, a build-up layer formed over the core substrate and including a first insulating layer, a conductor layer formed over the first insulating layer, and a second insulating layer formed over the conductor layer, and one or more wiring patterns formed over the first insulating layer. The conductor layer includes conductor portions, and the conductor portions have notched portions, respectively, facing each other across the wiring pattern.
摘要:
A method for manufacturing a printed circuit board, including providing a core substrate having an electronic component accommodated in the core substrate; forming a positioning mark on the core substrate; forming an interlayer insulating layer over the core substrate, the positioning mark and the electronic component; forming a via hole opening connecting to the electronic component through the interlayer insulating layer in accordance with the positioning mark on the core substrate; and forming a via hole structure in the via hole opening in the interlayer insulating layer such that the via hole structure is electrically connected to the electronic component.
摘要:
A method of manufacturing a multilayer printed circuit board having interlayer insulating layers and conductor layers repeatedly formed on a substrate, via holes formed in the interlayer insulating layers, and establishing electrical connection through the via holes, including containing an electronic component in said substrate, forming a positioning mark on said substrate based on a positioning mark of said electronic component, and conducting working or formation based on the positioning mark of said substrate.
摘要:
An electronic component mounting substrate including a support layer made of resin with first and second surfaces, an organic insulation layer on the first surface of the support layer with a first surface on opposite side of the first surface of the support layer and a second surface in contact with the first surface of the support layer, an inorganic insulation layer on the first surface of the organic layer, a conductor on the second surface of the support layer, and a first conductive circuit on the second surface of the organic layer. The inorganic layer has a second conductive circuit and a pad for mounting an electronic component inside the inorganic layer. The organic layer has a via conductor inside the organic layer and connecting the first and second circuits. The support layer has a conductive post inside the support layer and connecting the first circuit and the conductor.
摘要:
A multilayer printed wiring board including a core substrate, a built-up wiring layer having a first surface in contact with the substrate and a second surface, the second surface including a mounting area for mounting a semiconductor device, the built-up layer including circuits and insulating layers, first through-hole conductors formed in a first portion of the substrate which corresponds to the mounting area, second through-hole conductors formed in a second portion of the substrate which corresponds to an area of the second surface other than the mounting area, third through-hole conductors formed in a processor core area of the first portion of the substrate which corresponds to a processor core section of the device, and pads provided on the second surface. The first conductors have a pitch smaller than a pitch of the second conductors, and the third conductors have a pitch smaller than the pitch of the first conductors.
摘要:
A printed wiring board includes a main body having a mounting portion and ground and power supply pads in the mounting portion such that a ground line of a semiconductor device is connected to a ground pad and a power supply line of the device is connected to a power supply pad, and a layered capacitor disposed in the main body and having a high dielectric constant layer and first and second layer electrodes sandwiching the dielectric layer. One of the electrodes is connected to the power supply line and the other electrode is connected to the ground line, the first electrode has a solid pattern including passage holes through which second rod terminals connected to the second electrode pass in a non-contacting manner, and the second electrode has a solid pattern including passage holes through which first rod terminals connected to the first electrode pass in a non-contacting manner.
摘要:
A printed wiring board including a substrate having a first surface and a second surface on the opposite side of the second surface, a first conductive circuit formed on the first surface of the substrate, a second conductive circuit formed on the second surface of the substrate, a magnetic body embedded in the substrate and extending in a thickness direction of the substrate, the magnetic body having a through-hole formed through the magnetic body and extending in the thickness direction of the substrate, and a through-hole conductor formed on an inner surface of the through-hole of the magnetic body such that the first and second conductive circuits are electrically connected to each other through the through-hole conductor.
摘要:
A printed wiring board includes a mounting portion on which a dual core processor including two processor cores in a single chip can be mounted, power supply lines, ground lines, and a first layered capacitor and a second layered capacitor that are independently provided for each of the processor cores, respectively. Accordingly, even when the electric potentials of the processor cores instantaneously drop, an instantaneous drop of the electric potential can be suppressed by action of the layered capacitors corresponding to the processor cores, respectively. In addition, even when the voltage of one of the processor cores varies, the variation in the voltage does not affect the other processor core, and thus malfunctioning does not occur.