摘要:
A cooling system includes a cooling module which has a heat transfer plate elastically biased and exposed to the flow of a coolant for transferring heat dissipated from a circuit component on a printed circuit board to the coolant, and a solder or low-melting-point metal for establishing thermal contact between the transfer plate and the circuit component.
摘要:
A cooling system for electronic circuit components mounted on a printed circuit board, includes a cooling plate having a coolant passage, thermal contacts arranged on the cooling plate to be in resilient contact with the surfaces of the electronic components, which are cooled via the thermal contacts by liquid coolant flowing through the coolant passage. The cooling plate has one or more shortcut passages, the cross-sectional area of which is smaller than that of the coolant passage, to mutually connect predetermined portions of the coolant passage. The liquid coolant can be discharged from the cooling plate via the shortcut passage.
摘要:
The present invention provides an RFID tag excellent in the diffusion of heat. The RFID tag includes a base, an antenna pattern that is provided on the base and forms a communication antenna, a circuit chip that is electrically connected to the antenna pattern and performs radio communication via the antenna, a cover that is provided in close contact with the base in such a manner as to cover the antenna pattern except a prescribed region including the circuit chip, and an insulating thermal diffusion material that covers the prescribed region and is in thermal contact with the circuit chip. The insulating thermal diffusion material has thermal conductivity higher than the thermal conductivity of the cover.
摘要:
The present invention provides an RFID tag excellent in the diffusion of heat. The RFID tag includes a base, an antenna pattern that is provided on the base and forms a communication antenna, a circuit chip that is electrically connected to the antenna pattern and performs radio communication via the antenna, a cover that is provided in close contact with the base in such a manner as to cover the antenna pattern except a prescribed region including the circuit chip, and an insulating thermal diffusion material that covers the prescribed region and is in thermal contact with the circuit chip. The insulating thermal diffusion material has thermal conductivity higher than the thermal conductivity of the cover.
摘要:
A multi-layer wiring substrate includes a main substrate and a plurality of insulating films stacked on the main substrate. The plurality of insulating films have wiring patterns formed on wiring regions thereof and dummy wiring patterns formed on peripheral regions of the wiring regions. The wiring patterns include signal wiring patterns, power supply wiring patterns, and vias. The dummy wiring patterns correspond to the wiring patterns, respectively.
摘要:
A multi-chip module includes a base board, a thin-film multi-layer circuit board which is provided on a first surface of the base board and has a multi-layer structure in which insulating layers and wiring conductors are stacked, circuit elements mounted on a main surface of the thin-film multi-layer circuit board, and terminals which are attached to the main surface of the thin-film multi-layer circuit board and electrically connect the wiring conductors to circuits formed on a wiring board on which the multi-chip module is mounted.
摘要:
A cooling system including a cooling module which has a heat transfer plate that is exposed to a flow of coolant and is elastically biased toward a circuit component on a printed circuit board for transferring heat dissipated by the component to the coolant. A series of projections are provided on the heat transfer plate for producing turbulence in the flow of coolant. Alternatively, a cylindrical tubular plate is mounted on the heat transfer plate for increasing the surface area in contact with the flow of coolant.
摘要:
The present invention provides an RFID tag excellent in the diffusion of heat. The RFID tag includes a base, an antenna pattern that is provided on the base and forms a communication antenna, a circuit chip that is electrically connected to the antenna pattern and performs radio communication via the antenna, a cover that is provided in close contact with the base in such a manner as to cover the antenna pattern except a prescribed region including the circuit chip, and an insulating thermal diffusion material that covers the prescribed region and is in thermal contact with the circuit chip. The insulating thermal diffusion material has thermal conductivity higher than the thermal conductivity of the cover.
摘要:
A multilayer thin-film wiring board including a base material provided with a plurality of wiring layers and an insulating layer laminated on the base material, and including a via formed by laminating the wiring layers so as to be provide through the insulating layer. A plurality of branching vias are provided by forming a plurality of branches in one of the wiring layers forming the via, the plurality of branching vias being placed along a direction of extension of the base material. The plurality of branching vias are joined to the one of the plurality of wiring layers which is placed at a position closest to the base material.
摘要:
There is provided an I/O pin by which an MCM is positively prevented from being damaged by solder flowing from the fore end to the base of the I/O pin when the I/O pin is soldered in the case of mounting the MCM. An I/O pin used for an electrical connection is provided, one end of which is perpendicularly fixed to an MCM and the other end of which is soldered to a predetermined position on the mother board in the case of mounting the MCM on the mother board. In an intermediate portion of the I/O pin, there is formed a solder dam composed of a plated layer of Ni of low solder wettability, a layer of highly heat-resistant resin or a layer of high-temperature solder.