摘要:
A wiring body, used for manufacturing a substrate, includes a columnar body, having an axis, made of fired porous inorganic insulator impregnated with an organic insulator; and a large number of metallic fine wires embedded in the columnar body in parallel with the axis while the metallic fine wires are arranged at intervals, wherein a ratio of the inorganic insulator in the columnar body is 50 to 80 volume %, preferably 50 to 60 volume %. A method for manufacturing a wiring body includes the steps of charging a dispersed solution, in which inorganic insulating powder is dispersed, into a container in which a number of metallic fine wires are arranged in parallel with the axis, drying the dispersed solution, and firing inorganic insulating powder so that the porosity of the fired body can be in a range from 20 to 50 volume % so as to form a columnar body; and the steps of impregnating the obtained porous columnar body with uncured organic insulating material, and curing the organic insulating material.
摘要:
A mullite ceramic composition comprises mullite powder as a raw material; at least one of a rare earth element compound and an alkaline earth element compound; and at least one of a Group 6B vanadium compound, niobium compound and a tantalum compound, and the mixture is fired.
摘要:
An inductor includes a core substrate including minute column-like electrical conductors extending between a front surface and a back surface of the core substrate. Each column-like electrical conductor is insulated from adjacent column-like electrical conductors by being surrounded by an insulating material. Insulation layers are formed on the front surface and the back surface of the core substrate, respectively. At least two connection electrical conductors extend through each of the insulation layers. Each connection electrical conductor is electrically connected to a plurality of the column-like electrical conductors. Wirings are formed on each of the insulation layers to connect said connection electrical conductors to each other electrically. The wirings, the connection electrical conductors and the column-like electrical conductors are connected to form a coil in a three-dimensional manner.
摘要:
A fuel cell comprised of a solid electrolyte layer sandwiched by a cathode layer and an anode layer to which a mixed gas of a fuel gas and air mixed together is supplied, wherein the fuel cell is formed into a spiral member comprised of a single cell layer comprised of the cathode layer, solid electrolyte layer, and anode layer stacked together or a multilayer member of a plurality of the single cell layers stacked together rolled up spirally, the cathode layer and anode layer forming facing surfaces of each upper stratum and lower stratum of the single cell layer or multilayer member adjoining each other in a diametrical direction of the spiral member are arranged through an electrical insulator, and the cathode layer and anode layer or the electrical insulator are or is formed with a gas passage enabling passage of the mixed gas, whereby it is possible to prevent an increase in size of the cell even if increasing the contact area of the anode layer and cathode layer with the air or fuel gas.
摘要:
A substrate for inspecting an electronic device used for an electrical test of the electronic device having bump-shaped connection terminals, comprises: opening sections, the diameter of each opening being determined so that a connection terminal can be inserted into and drawn out from the opening, are formed penetrating the insulating substrate in a region on one side of an insulating substrate on which the electronic device is mounted, corresponding to an arrangement of the connection terminals; and wiring patterns, each of which is composed of a pad section being exposed onto a bottom face of the opening so that the pad can come into contact with the connection terminal so as to accomplish electrical continuity, a connecting pad section formed in a region outside of the region in which the pad section is formed, which comes into contact with a contact terminal of an inspection device so as to accomplish electrical continuity, and a wiring section for electrically connecting the pad section with the connecting pad section, are formed on the other side of the insulating substrate.
摘要:
A semiconductor device that meets the demand for realizing semiconductor chips in small sizes. A semiconductor device in which connection lands 20 formed on the electrode terminal carrying surface of a semiconductor chip 10 are electrically connected, through connection bumps 14, to connection pads 22 formed on one surface of an interposing substrate 12 of an insulating material so as to face the connection lands 20, wherein conductor wiring patterns 24 inclusive of the connection pads 22 are formed on one surface of the interposing substrate 12, conductor wiring patterns 30 inclusive of terminal lands on where the external connection terminals 26 will be mounted, are formed on the other surface of the interposing substrate 12, and the conductor wiring patterns 24 formed on one surface of the interposing substrate 12 are connected to the conductor wiring patterns 30 formed on the other surface of the interposing substrate 12 through vias 32 formed by filling recesses with a metal by plating, the recesses being formed to penetrate through the insulating material of the interposing substrate 12 and permitting the back surfaces of the conductor wiring patterns 24 on the side of the insulating material to be exposed on the bottom surfaces thereof.
摘要:
A multi-layer circuit board having a decreased number of circuit boards for mounting an electronic part that has connection electrodes arranged in the form of an area array, featuring a high yield and improved reliability. In the multi-layer circuit board, circuit patterns formed on a first circuit board on the surface of the side where said electronic part is mounted, are connected to every land positioned on the outermost side of the lands arranged in the form of an area array, and are connected to the lands alternatingly selected from the lands of the second sequence and the third sequence of the inner side; circuit patterns formed on a second circuit board are connected to every via electrically connected to the lands of the second sequence to which the circuit pattern is not connected on the first circuit board, and to the vias electrically connected to all of the lands of the fourth sequence and the fifth sequence on the first circuit board; circuit patterns formed on a third circuit board are connected to every via electrically connected to the lands of the third sequence to which the circuit pattern is not connected on the first circuit board, and to the vias electrically connected to all of the lands of the sixth sequence and the seventh sequence on the first circuit board; and circuit patterns formed on a fourth circuit board are connected to every via electrically connected to the lands of the eighth sequence and the ninth sequence on the first circuit board.
摘要:
A wiring substrate is provided in which a common core member is used and the cost can be reduced. Diameters of the penetrating filled vias (18) are the same and not more than 300 .mu.m, and the penetrating filled vias (18) are formed on a core substrate (20) into a matrix-shape at regular intervals of not more than 2 mm. On the surface of the core substrate (20), a plane wiring pattern (17) is formed through an insulating layer (16). Each pad portion on the wiring pattern (17) is electrically connected with each corresponding via of the filled vias (18) by one to one through a connecting via (28) which penetrates the insulating layer (16), and some of the filled vias (18) are not connected with the wiring pattern (17).
摘要:
A semiconductor chip mount structure includes a substrate having a base surface on which base side connectors are formed; a semiconductor chip mounted on the base surface, the semiconductor chip having chip side connectors on a first surface thereof facing the base surface, the chip side connectors being electrically connected to the base side connectors; an insulating resin layer covering the chip side connectors and the base side connectors; a metal layer, made of a metal having a melting point lower than a temperature at which the electrical components of the semiconductor chip may be thermally destroyed, for covering the semiconductor chip and the insulating resin layer; and a wetting characteristic improving layer such as a metal powder or foil layer, formed along a contact surface between the metal layer and the insulation resin layer.
摘要:
Internal wiring made of copper of low-resistance is provided in a ceramic oxide. Green sheets 10 made of oxide powder are provided with plane wiring 18 and/or via wiring 14 in which copper is used as wiring material. The green sheets 10 are laminated and integrated in such a manner that the wiring portions 4 and 18 are covered with the green sheet so as not to be exposed onto a surface. Then the laminated body is fired at a maximum temperature in a range from 1,083.degree. to 1,800.degree. C.