Abstract: The electronic device includes a semiconductor device, a substrate on which the semiconductor device is mounted, a flange member for holding a peripheral portion of the substrate and a cooling member, in which the flange member for supporting the substrate of the semiconductor device being thermally in contact with the cooling member is arranged to come into contact with a heater through an adapter and between the heater and the cooling member, a heat insulating material is filled.

Abstract: The electronic device includes a semiconductor device, a substrate on which the semiconductor device is mounted, a flange member for holding a peripheral portion of the substrate and a cooling member, in which the flange member for supporting the substrate of the semiconductor device being thermally in contact with the cooling member is arranged to come into contact with a heater through an adapter and between the heater and the cooling member, a heat insulating material is filled.

Abstract: A cooling structure is provided for a multichip module on which integrated circuit devices (i.e., LSI devices) having heat-radiation surfaces are mounted, wherein there are provided a heat sink, thermal conduction blocks and thermal compounds. Recess portions are formed at a surface of the heat sink in connection with the integrated circuit devices of the multichip module. Low melting point metal material such as solder is supplied to interiors of the recess portions of the heat sink. The thermal conduction blocks are partially inserted into the interiors of the recess portions under the condition where the low melting point metal material is heated and melted, so that the thermal conduction blocks temporarily float in the melted material. To avoid heat transfer toward the integrated circuit devices, a heat insulating sheet is provided on the thermal conduction blocks. Then, the low melting point metal material is solidified, so the heat insulating sheet is removed.

Abstract: A cooling system for an electronic device having a plurality of multistage circuit boards therein includes a plurality of inlet-side guides arranged in parallel on an inlet port side of the plurality of circuit boards in a direction of a flow of the air taken in from an inlet port. The inlet-side guides are each inclined at a predetermined angle toward a side opposite to the inlet port to deflect the inlet air away from the circuit boards. A plurality of fans blow onto the circuit boards the air guided by the plurality of inlet-side guides. The system may further include a mesh member between the circuit boards and the fans.

Abstract: A temperature IC is mounted to a card mounted within an electronic apparatus for monitoring airflow rate around the card to provide an alarm signal. The temperature IC includes a first IC including a temperature sensor and a second IC disposed downstream of the first IC. The second IC includes a temperature sensor and a resistor as a heating element. The second IC includes a first arithmetic unit that forms the difference in temperature out of two inputs of the temperature sensors, and a second arithmetic unit that determines thermal resistance of the second IC out of the difference in temperature and the quantity of heat released from the resistor. A memory stores date indicative of a relation between values of airflow rate and values of thermal resistance. A third arithmetic unit is provided to refer the stored data using the determined thermal resistance to find airflow rate.

Abstract: A cooling structure is provided for a multichip module on which integrated circuit devices (i.e., LSI devices) having heat-radiation surfaces are mounted, wherein there are provided a heat sink, thermal conduction blocks and thermal compounds. Recess portions are formed at a surface of the heat sink in connection with the integrated circuit devices of the multichip module. Low melting point metal material such as solder is supplied to interiors of the recess portions of the heat sink. The thermal conduction blocks are partially inserted into the interiors of the recess portions under the condition where the low melting point metal material is heated and melted, so that the thermal conduction blocks temporarily float in the melted material. To avoid heat transfer toward the integrated circuit devices, a heat insulating sheet is provided on the thermal conduction blocks. Then, the low melting point metal material is solidified, so the heat insulating sheet is removed.

Abstract: A cooling structure which is used for forced cooling of an electronic circuit package such as an integrated circuit is disclosed. The cooling structure comprises a tubular fin member having many through-holes of small diameter, a flat plate member which is joined to and seals one end of the tubular fin member, a lid member attached to the other end of the tubular fin member and a pipe member used as a nozzle from which coolant is jetted towards the plate member. Both the tubular fin member and the plate member are made of a material having high heat conductivity. The pipe member extends through the lid member or is inserted through an opening formed in the lid member. The electronic circuit package is fixed to the plate member.

Abstract: A cooling apparatus for integrated circuit chips in which the pressure of coolant does not affect the pressure exerted by the cooling apparatus on the chip. A block is provided with a plurality of holes, and cooling members are inserted in these holes. An elastic member is provided between the block and the cooling member, and the cooling member is supported in the block by the elastic member. Each of the cooling members are connected by pipes, and a bellows is provided in the pipe. When the block is loaded on the substrate on which the integrated circuit chips are mounted, the elastic member deforms and the cooling member is displaced in accordance with the height and inclination of the integrated circuit chip. The lower surface of the cooling member is brought into close contact with the integrated circuit chip due to the deformation of the elastic member. The bellows deforms in accordance with the displacement of the cooling member to ensure the normal connection of the pipe.

Abstract: There is provided with a method of mounting a circuit on a substrate which utilizes advantages of the COG method, can enhance the yield and can reduce the cost, and a circuit substrate for use in the method.A circuit pattern, including a pectinate connecting electrode having the same pitch interval as that of a pectinate marginal electrode on an electrode pattern formed on a substrate, is formed on a stick circuit substrate having the same coefficient of thermal expansion as that of the substrate and extending in the lateral or longitudinal direction of the margin of the substrate.After the necessary number of circuits are directly mounted on the circuit substrate, the pectinate marginal electrode of the substrate and the corresponding pectinate electrode of the circuit substrate are electrically connected.