摘要:
A silicon chip is mounted on a portion a heat dissipation body, and a carrier film is inserted into a resin composition material. Each of input/output electrode portions of the silicon chip is connected electrically to each of lead wires of the carrier film. The electrical connection between the silicon chip and a circuit substrate is carried out by the carrier film. Another portion of the heat dissipation body is exposed on a surface of the resin composition material. A fixing means for fixing the resin composition material is formed integrally to the resin composition material or to the heat dissipation body. The resin composition material is fixed to a circuit substrate through the fixing means. The mechanical fixing between the resin composition material and the circuit substrate is carried out by the fixing means, which is separate from the carrier film. A heat dissipation fin may be provided on the heat dissipation body.
摘要:
According to the present invention, as improvement in the adhesion of inner leads with a packaging resin in a resin-sealed semiconductor device is attained by spreading leads on or near the circuit-forming face of a pellet, or on or near the main non-circuit-forming face of the pellet to extend the lengths of the inner leads on or under the pellet.
摘要:
A circuit substrate is presented. The circuit substrate comprises internal terminal electrode 2; a substrate 1; a wiring layer 21 formed on a portion of the surface of the substrate and having one end thereof connected to the internal terminal electrode; an insulating film contacting as a surface with the wiring layer; and an external terminal electrode 9 connected to the other end of the wiring layer and used for connecting to the exterior. The angle of the cross-section of the wiring layer taken perpendicularly to the surface of the substrate in the edge portion that the wiring layer contains is 55° (55 degree) or less, and the wiring layer that contains multiple mutually independent columnar crystals extending perpendicularly in a direction different from the direction of the surface of the substrate.
摘要:
A method of manufacturing a massive mixture of aluminum nitride and aluminum includes a first heat treatment process of manufacturing the massive mixture of aluminum nitride and aluminum by heating aluminum powder (21) and aluminum pieces (20) inserted into a vessel (13) at a temperature of a melting point of aluminum or higher under a nitrogen atmosphere. An oxide film is formed over the surface of the aluminum powder (21). The oxide film is, for example, a natural oxide film. The weight ratio of the aluminum powder (21) to the aluminum pieces (20) is, for example, 0.1 or less.
摘要:
A storage battery of the present invention is a capacitor-type storage battery having a short charging time and a long life, and capable of realizing a high output voltage. The storage battery includes a metal sheet 10 connected to a first terminal 22, a first metamaterial film 13 formed on a front surface of the metal sheet 10, and a first conductive film 12 formed on the first metamaterial film 13 and connected to a second terminal 21. The first metamaterial film 13 is a polycrystalline semiconductor film, and in each of crystal grains constituting the polycrystalline semiconductor film, the inside is of a first conductivity type, and the vicinity of interface is of a second conductivity type. An oxide insulating film may be formed on a surface of the metal sheet 10.
摘要:
Signal transmission technology for transmitting 20–50 GHz band digital high speed signals, while keeping to the system structure and element structure of the prior art is provided. A signal transmission system is provided in which the driver and the receiver comprise the logic circuit and the memory circuit for a transistor extending an entire electronic circuit, and wherein the driver is connected to the receiver via a signal transmission line, and to the power source Vdd via the power source/ground transmission line, and the receiver circuits and the driver and receiver all have substantially differential input and differential output, and at the output terminal of the substantially differential output of the driver there are no connections to a power source or a ground and the receiver receives signals by detecting potential difference of a substantially differential input signal and there are no distribution wires in the signal transmission lines.
摘要:
A terminal resistor is provided at the end of a bus formed on a wiring substrate. An insulator having a large dielectric loss angle is provided in the vicinity of the terminal resistor to absorb high frequency electromagnetic waves in the vicinity. This arrangement permits successful transmission of digital signals in the GHz region using a conventional terminal resistor.
摘要:
A terminal resistor is provided at the end of a bus formed on a wiring substrate. An insulator having a large dielectric loss angle is provided in the vicinity of the terminal resistor to absorb high frequency electromagnetic waves in the vicinity. This arrangement permits successful transmission of digital signals in the GHz region using a conventional terminal resistor.
摘要:
A bypass capacitor having a given capacitance is arranged on the power/ground line adjacently to a driver circuit in a chip to reduce an effect of transient phenomenon at switching. The capacitance of the bypass capacitor is preset so as to be larger than a parasitic capacitance of the driver circuit to prevent the characteristic impedance of the power/ground line from being higher than the characteristic impedance of internal wiring.
摘要:
An electronic circuit device having a power-supply structure capable of supporting fast signals in and above a GHz band is offered. A driver transistor is formed in a surface of a semiconductor substrate. Power-supply/ground pair transmission lines which provide the driver transistor with power and signal/ground pair transmission lines which transmit signals to a receiver are formed on the semiconductor substrate. The power-supply/ground pair transmission lines are connected to a drain layer of the driver transistor and a P+ layer in a P well. The signal/ground pair transmission lines are connected to a source layer of the driver transistor and a P+ layer in the P well.