Abstract:
A semiconductor device includes a first circuit base member including a surface having multiple first electrodes formed thereon, a second circuit base member being provided above the first circuit base member and having first through holes and second through holes formed respectively above the first electrodes, a semiconductor package provided above the second circuit base member, and multiple first bumps provided inside the first through holes and the second through holes to connect the first electrodes to the semiconductor package.
Abstract:
A circuit board for reducing a transmission loss and a method for manufacturing the circuit board. In the circuit board including a ground layer and power layer facing each other, a wiring layer disposed between the ground layer and the power layer, and an insulating section formed between the ground layer and the power layer so as to sandwich the wiring layer therebetween, a low dielectric loss layer having a dielectric tangent lower than that of the insulating section is formed at least on an upper or lower surface of the wiring layer. According to such a circuit board, the low dielectric loss layer is formed on an interface between the insulating section and the wiring layer, and therefore, a transmission loss in a high frequency region is reduced.
Abstract:
A resin composition comprising an epoxy group-containing cycloolefin resin and a crosslinking agent is provided. More specifically, a resin composition comprising an epoxy group-containing thermoplastic norbornene resin obtained by introducing epoxy groups into a thermoplastic norbornene resin, and as the crosslinking agent, a curing agent for epoxy resins or a photoreactive substance is provided. The resin composition is suitable for use as an insulating material.
Abstract:
A multi-chip module includes: a board; a wiring board disposed on the board and including a wiring pattern; and a plurality of chips disposed on the wiring board. Each of the plurality of chips is connected with at least one of the other chips, and the plurality of chips and the board are electrically connected with each other via a portion other than the wiring pattern of the wiring board.
Abstract:
An interconnect board for interconnecting and arranged between a first circuit board and a second circuit board, the interconnect board includes a conductive plate including a connection terminal to be electrically connected to a power supply terminal or a ground terminal of each of the first circuit board and the second circuit board, an insulating member wrapping the conductive plate except for the connection terminal, and a conductive member penetrating the insulating member to electrically connect a signal terminal of the first circuit board to a signal terminal of the second circuit board.
Abstract:
A method of manufacturing a multi-chip module includes: securing a plurality of chips on a surface of a flat-shaped member through a solder bump; connecting the plurality of chips with each other by a bonding wire, at surfaces, opposite to the flat-shaped member side, of the plurality of chips; and electrically connecting the plurality of chips with a board, at the surfaces, opposite to the flat-shaped member side, of the plurality of chips.
Abstract:
A semiconductor device has a semiconductor element having a plurality of connection terminals, a circuit substrate electrically connected with the semiconductor element; and a connecting member arranged between the semiconductor element and the circuit substrate having a plurality of conductive projections each having a columnar portion, each of columnar portions are connected with each of connection terminals, a cross section of the columnar portion along a plane parallel to a surface of the semiconductor element being smaller than a surface area of each of connection terminals of the semiconductor element.
Abstract:
A circuit board for reducing a transmission loss and a method for manufacturing the circuit board. In the circuit board including a ground layer and power layer facing each other, a wiring layer disposed between the ground layer and the power layer, and an insulating section formed between the ground layer and the power layer so as to sandwich the wiring layer therebetween, a low dielectric loss layer having a dielectric tangent lower than that of the insulating section is formed at least on an upper or lower surface of the wiring layer. According to such a circuit board, the low dielectric loss layer is formed on an interface between the insulating section and the wiring layer, and therefore, a transmission loss in a high frequency region is reduced.
Abstract:
A multilayer interconnection substrate includes a resin laminated structure in which plural build-up layers are laminated, each of the plural build-up layers comprising an insulation layer and an interconnection pattern, and first and second solder resist layers provided on a top surface and a bottom surface of the resin laminated structure, wherein each of the first and second solder resist layers includes a glass cloth.
Abstract:
An inexpensive multilayer wiring circuit board capable of conducting high frequency switching operation on the circuit while the generation of high frequency noise is being suppressed by reducing the inductance of the circuit in provided. A multilayer wiring circuit board comprising: an uppermost layer designated as a first layer on which parts are mounted; a second layer on which one of a ground layer and an electric power source layer is arranged; a third layer on which the other is arranged; and an insulating layer arranged between the ground layer and the electric power source layer. A resin layer having a thermoplastic adhesion property on both faces is used as material of the insulating layer arranged between the electric power source layer and the ground layer.