摘要:
In an electrolytic capacitor of the present invention, a dielectric layer is provided on a surface of a valve metal element for an anode having a capacitor forming part and an electrode lead part, and further, a solid electrolyte layer and a charge collecting layer for a cathode are provided in this order thereon. The capacitor forming part and the electrode lead part of the valve metal element for an anode have rough surface layers on their surfaces, and are compressed in the thickness direction of the rough surface layers. Further, a region other than the electrode lead part and the charge collecting element for cathode is molded with a molding material. Exposed portions of the electrode lead part and the charge collecting element for cathode function as electrode terminals, respectively.
摘要:
A thermal conductive sheet including at least 70-95 weight parts of inorganic filler and 5-30 weight parts of thermosetting resin composition and having flexibility in an uncured state is prepared. Through-holes are formed in the thermal conductive sheet and a conductive resin composition is filled in the through-holes. The thermal conductive sheet and a semiconductor chip are overlapped to match positions of the through-holes formed in the thermal conductive sheet with those of the electrodes formed on the semiconductor chip. The thermal conductive sheet and the semiconductor chip are compressed while being heated and the thermal conductive sheet is cured and integrated with the semiconductor chip. An external lead electrode is formed on the thermal conductive sheet at a side opposite to the surface where the semiconductor chip is overlapped, and that is connected with the conductive resin composition. According to the above-mentioned configuration, a semiconductor package that is not required to be sealed by resin, and is excellent in reliability, air-tightness and thermal conductivity can be realized.
摘要:
A magnetic element including: a composite magnetic member A containing a metallic magnetic powder in an amount of 50-70 vol. % and a thermosetting resin in an amount of 50-30 vol. %; a magnetic member B that is at least one selected from a ferrite sintered body and a pressed-powder magnetic body of a metallic magnetic powder; and a coil. The magnetic element is characterized in that a magnetic path determined by an arrangement of the coil passes the magnetic member A and the magnetic member B in series and the coil is embedded in the magnetic member A. The present invention also provides a method for manufacturing the magnetic element.
摘要:
A thermally conductive substrate having a structure in which inorganic filler for improving the thermal conductivity and thermosetting resin composition are included. The thermosetting resin composition has a flexibility in the not-hardened state, and becomes rigid after hardening. The thermally conductive substrate has excellent thermal radiation characteristics. The method of manufacturing the thermally conductive substrate includes: piling up (a) the thermally conductive sheets comprising 70 to 95 weight parts of an inorganic filler, and 4.9 to 28 weight parts of a thermosetting resin composition, the thermosetting resin composition comprising at least one thermosetting resin, a hardener and a hardening accelerator, and (b) lead frame on which a wiring is formed; thermal pressing the pile; filling the thermally conductive sheet to the surface of the lead frame; hardening the thermosetting resin; cutting excess sections of the thermally conductive substrate; and processing the bending perpendicularly for making a removable electrode.
摘要:
A composition for substrate materials according to the present invention includes 70-95 wt. % of inorganic powder and 5-30 wt. % of thermosetting resin composition and is in a finely crushed condition. The composition for substrate materials is prepared, for example, by crushing into fine pieces and mixing the inorganic powder and the thermosetting resin composition. A heat conductive substrate is provided with an insulator body formed by heating and pressurizing said composition for substrate materials and a wiring pattern is provided in such a condition that it is exposed on the surface of the insulator body. A process for manufacturing the heat conductive substrate comprises forming said composition for substrate materials into the insulator body by casting the above mentioned composition for substrate materials into a metal mold to be heated and pressurized so that said thermosetting resin is cured.
摘要:
A thermal conductive sheet including at least 70-95 weight parts of inorganic filler and 5-30 weight parts of thermosetting resin composition and having flexibility in an uncured state is prepared. Through-holes are formed in the thermal conductive sheet and a conductive resin composition is filled in the through-holes. The thermal conductive sheet and a semiconductor chip are overlapped to match positions of the through-holes formed in the thermal conductive sheet with those of the electrodes formed on the semiconductor chip. The thermal conductive sheet and the semiconductor chip are compressed while being heated and the thermal conductive sheet is cured and integrated with the semiconductor chip. An external lead electrode is formed on the thermal conductive sheet at a side opposite to the surface where the semiconductor chip is overlapped, and that is connected with the conductive resin composition. According to the above-mentioned configuration, a semiconductor package that is not required to be sealed by resin, and is excellent in reliability, air-tightness and thermal conductivity can be realized.
摘要:
A connecting member of circuit substrates includes an organic porous base material provided with tackfree films on both sides, through-holes disposed at requested places which are filled with conductive resin compound up to the surface of the tackfree films. This structure enables inner-via-hole connection and can therefore attain a connecting member of circuit substrates and an electrical connector of high reliability and high quality. By using a connecting member of circuit substrates including the organic porous base material provided with tackfree films on both sides and through-holes disposed at requested places which are filled with conductive resin compound up to the surface of the tackfree films, it is possible to form a high-multilayer substrate easily from double sided boards or four-layer substrates which can be manufactured rather stably. In addition to that, since the conductive paste is filled up to the surface of the tackfree films, the conductive paste sticks out from the surface of the organic porous base material when the tackfree films are separated. As a result, the filled amount of the conductive substance increases after the lamination, and thus, the connection resistance is reduced considerably.
摘要:
It is an object of the present invention to provide a highly reliable printed circuit board subject to little bowing or twisting of the substrate, wherein the substrate and metal wiring are securely bonded together, and stable electrical and mechanical connection is achieved between the metal wiring and electroconductive resin paste filled into the through holes, and to provide a method of manufacture for same. The present invention relates to a printed circuit board having a multilayer wiring structure comprising a plurality of sheet substrates consisting of resin component layers containing an inorganic filler formed onto both sides of an organic nonwoven fabric material, and two or more circuit patterns, wherein through holes are formed in the sheet substrates in the thickness direction thereof and an electroconductive resin component is filled into the through holes, forming electrical connection between each of the electrode layers, and to a method of manufacture for same.
摘要:
The top surface of an insulating substrate is formed with a plurality of electrodes for bump connection, while the undersurface of the insulating substrate is formed with external terminals which are arranged in an array. On the insulating substrate is provided a semiconductor chip. The undersurface of the semiconductor chip is formed with bump electrodes. The electrodes for bump connection are electrically connected to the bump electrodes by means of a conductive adhesive. The space between the semiconductor chip and the insulating substrate is filled with a resin which integrates the above two and dissipates heat generated from the semiconductor chip.
摘要:
The top surface of an insulating substrate is formed with a plurality of electrodes for bump connection, while the undersurface of the insulating substrate is formed with external terminals which are arranged in a matrix. On the insulating substrate is provided a semiconductor chip. The undersurface of the semiconductor chip is formed with bump electrodes. The electrodes for bump connection are electrically connected to the bump electrodes by means of a conductive adhesive. The space between the semiconductor chip and the insulating substrate is filled with a resin which integrates the above two and dissipates heat generated from the semiconductor chip.