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.
摘要:
The thin-film multi-layer substrate includes an insulating substrate base plate, and a thin-film structure including a plurality of conducting layers and a plurality of insulating layers formed on the substrate base plate. A via structure is formed in the thin-film structure and connected to one of the conducting layers of the thin-layer structure. Pins are connected to the via structure, such that the bottom of the via structure is directly laminated on the substrate base plate, and the pins are secured onto the via structure.
摘要:
A heat sink structure of a module substrate includes a plurality of stripe-like bottom regions extending in a longitudinal direction and repeated in a lateral direction with a predetermined pitch, a plurality of stripe-like top regions extending in said longitudinal direction and repeated in the lateral direction with said predetermined pitch, such that the stripe-like bottom regions and the stripe-like top regions are repeated alternately in the lateral direction, wherein the stripe-like top regions and the stripe-like bottom regions have respective lateral edges that are connected with each other by cooling fins.
摘要:
A semiconductor element cooling apparatus adapted to cool at least one semiconductor element mounted on a circuit substrate. The semiconductor element cooling apparatus includes a first mechanism for generating a coolant flow by flowing a coolant over a top surface of the semiconductor element, and a second mechanism for obliquely obstructing the coolant flowing over the semiconductor element from an upstream side towards a downstream side of the coolant flow.
摘要:
A printed circuit board assembly having a printed circuit board mounted, on both faces, heat generative electronic circuit components, such as integrated circuit chips, and a pair of liquid-cooling modules arranged on both sides of the printed circuit board. Each of the liquid-cooling modules is provided with a liquid cooling plate having liquid coolant supply heads and a plurality of resilient heat transfer units held by the liquid-cooling plate and arranged in compressive contact with the electronic circuit components on both faces of the printed circuit board.
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 multilayer printed circuit board includes an interior interconnect layer, and a semiconductor package including a flexible interconnect structure whose distal end is a free end, wherein the flexible interconnect structure and the interior interconnect layer are electrically connected to each other.
摘要:
A method for manufacturing a multilayer printed circuit board, and a printed circuit board manufactured according to the method, includes laterally-aligning a first inner substrate in which first insulation layers and first conductor layers are alternately laminated and a second inner substrate in which second insulation layers and second conductor layers are alternately laminated. The second inner substrate has a lager number of layers than the first inner substrate. The laterally-aligned first inner substrate and second inner substrate are placed between a pair of third insulation layers in a thickness direction. The pair of the third insulation layer are heated under pressure in the thickness direction. A conductor pattern is formed on surfaces of the pair of the third insulation layers.