Abstract:
A power converter includes a base plate 20 having thereon a switching device, and positive 27 and negative 28 conductors respectively including main portions 27A, 28A disposed parallel to the base plate. One of the main portions is placed over the other of the main portions. The main portions are disposed adjacent to and parallel to each other. The main portions are insulated from each other. The power converter includes a capacitor 17 having positive and negative terminals electrically connected to the respective main portions of the positive and negative conductors. Each of the positive and negative conductors includes a side portion 27B, 28B extending from the main portion 27A, 28A toward the base plate 20, and a terminal portion 27C, 28C extending from the side portion and joined to the base plate. The side portion is formed with a cutout 27D, 28D extending from the end adjacent to the base plate to the opposite end connected to the main portion.
Abstract:
A semiconductor package includes: a metal plate including a first surface, a second surface and a side surface; a semiconductor chip on the first surface of the metal plate, the semiconductor chip comprising a first surface, a second surface and a side surface; a first insulating layer that covers the second surface of the metal plate; a second insulating layer that covers the first surface of the metal plate, and the first surface and the side surface of the semiconductor chip; and a wiring structure on the second insulating layer and including: a wiring layer electrically connected to the semiconductor chip; and an interlayer insulating layer on the wiring layer. A thickness of the metal plate is thinner than that of the semiconductor chip, and the side surface of the metal plate is covered by the first insulating layer or the second insulating layer.
Abstract:
Provided is a highly reliable ceramic circuit board which can be manufactured at a low cost and is friendly to environment as a material from which lead is eliminated in forming the multilayered structure. A multi-layered ceramic circuit board includes: a sintered ceramic base body 2; a first circuit wiring pattern 3 which is formed on a surface of the ceramic base body and is formed of conductive paste made of conductive metal; an insulation layer 8 which is formed on a surface layer of the first circuit wiring pattern and is made of a dielectric; and a conductive pattern and a resistor 4 which are formed on a surface layer of the insulation layer, the conductive pattern having a second circuit wiring pattern and a land on which a circuit mounting part is mounted are formed, wherein the portions other than the land portion on which the circuit mounting part is mounted are covered with a protective film 5 by coating, and an electronic circuit part 7 is connected to the land by a conductive adhesive agent, wherein the dielectric is formed of a green sheet 11 of a low temperature co-fired ceramics circuit board which is prepared by mixing alumina powder and glass powder with a solvent (see Fig. 5 ).
Abstract:
A method of manufacturing an electronic component-embedded board is provided which is capable of suppressing warpage without requiring complicated processes at low cost and which offers high productivity and economic efficiency. A worksheet 100 includes insulating layers 21 and 31 on one surface of an approximately rectangular substrate 11, and an electronic component 41 and a plate-like frame member (member) 51 embedded inside the insulating layer 21, wherein the plate-like frame member 51 satisfying the relationship represented by the following formula (1) :±1