摘要:
Conventional printed circuit boards had a problem of being inferior in heat-radiation characteristic, and metal-core printed circuit boards adopted to improve the heat-radiation characteristic had problems in having low rigidity and a tendency to bend. The ductility of the metal can be obstructed, and the metal protected; by covering substantially the whole area of the front and back sides of the metal core, consisting of metal as the main material, with a first ceramic film and a second ceramic film that obstruct the ductility of the aforementioned metal-core; and covering each of the ceramic films with insulated resin films, to cover the fragility of these ceramics.
摘要:
A method for fabricating a circuit apparatus includes forming a wiring layer, a conductive layer, and a first insulating layer on the wiring substrate, removing the conductive layer in an opening of the first insulating layer so as to expose the wiring layer, forming a gold plating layer on the wiring layer, removing the first insulating layer and the conductive layer, forming a second insulating layer on the wiring substrate, the second insulating layer having an opening through which the gold plating and adjacent wiring layers are exposed, and electrically connecting a circuit element to the gold plating layer.
摘要:
A semiconductor module includes a device mounting board and a semiconductor device. The semiconductor device and the device mounting board are flip-chip connected to each other, and a device electrode provided in the semiconductor device and a substrate electrode provided in the device mounting board are connected by soldering. In a cross section along a line connecting the adjacent substrate electrodes, the width L1 of the substrate electrode is narrower than the width L2 of the device electrode corresponding to the substrate electrode.
摘要:
An electrode for a semiconductor device is formed on the mounting surface (particularly, the outer periphery thereof) of a semiconductor substrate in a semiconductor module. In order to secure a large gap between the electrodes, an insulating layer is formed on the electrode. Also formed are a plurality of bumps penetrating the insulating layer and connected to the electrode, and a rewiring pattern integrally formed with the bumps. The rewiring pattern includes a bump area and a wiring area extending contiguously with the bump area. The insulating layer is formed to have a concave upper surface in an interval between the bumps, and the wiring area of the rewiring pattern is formed to fit that upper surface. The wiring area of the rewiring pattern is formed to be depressed toward the semiconductor substrate in relation to the bump area of the rewiring pattern.
摘要:
A circuit device includes a metal substrate; and a plurality of circuit elements, mounted on the metal substrate, which electrically connects to the metal substrate. The metal substrate is made of a copper plate of high thermal conductivity. The metal substrate is demarcated into a plurality of sections by insulating films added with a filler for enhancing the thermal conductivity in resin. The circuit elements, which have respective independent operating potentials on a side of the metal substrate of the circuit elements, are respectively provided on separated copper plates.
摘要:
A technique for reducing the size of a semiconductor device is provided. A semiconductor device comprises a base, a semiconductor chip, a chip component, an insulating base, a wiring pattern, a via plug, an external lead-out electrode, a recess, and a resin. The insulating base has a multi-layer structure formed by laminating a plurality of insulator films. The semiconductor chip and the chip component are mounted on the base and embedded in the insulating base. A recess is formed on the surface of the semiconductor device and reaches down to any of wiring conductor layers. The semiconductor chip and the chip component are mounted on the recess.
摘要:
A method for manufacturing a circuit device, which is suitable for connecting a plurality of laminated wiring layers to each other through an insulating layer, is provided. In a method for manufacturing a hybrid integrated circuit device of the present invention, a first wring layer is formed by laminating a first conductive film on a first insulating layer, and patterning the first conductive film. In the first wiring layer, a first connection part which is protruded in a thickness direction is formed. Moreover, the first wiring layer including the first connection part is covered with a second insulating layer. The second insulating layer is formed of a first resin film and a second resin film. The second resin film contains fewer inorganic fillers than the first resin film. Thus, there is an advantage that a through-hole can be easily formed.
摘要:
A circuit device includes an insulating base provided with a resin layer mixed with a fibrous filler, bumps provided in the insulating base and functioning as electrodes for connection, a semiconductor device that is flip-chip mounted, and an underfill filling a gap between the semiconductor device and the insulating base. By allowing the fibrous filler projecting through the top surface of the resin layer to be in contact with the underfill, strength of adhesion between the underfill and the insulating base is improved.
摘要:
A semiconductor module is of a structure such that a wiring layer, an insulating resin layer and a semiconductor device are stacked in this order by bonding them together with compression. In the wiring layer, bump electrodes each having a base and a tip portion are provided in positions corresponding respectively to device electrodes of the semiconductor device. The bump electrodes penetrate the insulating resin layer and are electrically coupled to the corresponding device electrodes.
摘要:
A device mounting board is provided with: a substrate structural unit including a substrate made of a composition containing amorphous silicon, a first adhesive layer provided on one of the main surfaces of the substrate, and a second adhesive layer provided on the other main surface of the substrate; a first wiring layer provided on the main surface of the first adhesive layer on the opposite side from the substrate; a second wiring layer provided on the main surface of the second adhesive layer on the opposite side from the substrate; and a via conductor, which is provided in a via hole that penetrates the substrate, the first adhesive layer, and the second adhesive layer, which electrically connects the first wiring layer and the second wiring layer.