Abstract:
A package carrier including a removable supporting plate and a circuit board is provided. The removable supporting plate includes a dielectric layer, a copper foil layer and a releasing layer. The dielectric layer is disposed between the copper foil layer and the releasing layer. The circuit board is disposed on the removable supporting plate and directly contacts the releasing layer. A thickness of the circuit board is between 30 μm and 100 μm.
Abstract:
A heat dissipation plate including a heat-conductive material layer, a first metal layer, a metal substrate, and a metal ring frame is provided. The heat-conductive material layer has an upper surface and a lower surface opposite to each other. A material of the heat-conductive material layer includes ceramic or silicon germanium. The first metal layer is disposed on the lower surface of the heat-conductive material layer and has a first rough surface structure. The metal substrate is disposed below the first metal layer and has a second rough surface structure. The metal ring frame is disposed between the first metal layer and the metal substrate. The first rough surface structure, the metal ring frame, and the second rough surface structure define a fluid chamber, and a working fluid flows in the fluid chamber.
Abstract:
A cable management device used in a chassis includes a frame and two board-like cable management units are respectively connected to two sides of the frame. Each cable management unit has multiple recesses. The cables of each of the ports are located in the corresponding recesses to avoid the cables from being in contact with each other and have better heat dissipating feature.
Abstract:
A manufacturing method of a circuit structure is provided. A metal layer having an upper surface is provided. A surface passivation layer is formed on the metal layer. The surface passivation layer exposes a portion of the upper surface of the metal layer, and a material of the metal layer is different from a material of the surface passivation layer. The metal layer and the surface passivation layer are dipped into a modifier, and the modifier is selectively absorbed and attached to the surface passivation layer, so as to form a covering layer. The covering layer has a plurality of nanoparticles and covers the surface passivation layer.
Abstract:
A thermal conductivity substrate including a metal substrate, a metal layer, an insulating layer, a plurality of conductive structures, a first conductive layer and a second conductive layer is provided. The metal layer is disposed on the metal substrate and entirely covers the metal substrate. The insulating layer is disposed on the metal layer. The conductive structures are embedded in the insulating layer and connected to a portion of the metal layer. The first conductive layer is disposed on the insulating layer. The second conductive layer is disposed on the first conductive layer and the conductive structures. The second conductive layer is electrically connected to a portion of the metal layer through the conductive structures. The second conductive layer and the conductive structures are integrally formed.
Abstract:
A method for dual-tone multi-frequency (DTMF) signaling is implemented in a communication device and comprises the following steps. Transmission of a DTMF event of a digit is triggered if a button-down event occurs. A packet carrying the DTMF event with assigned non-zero event duration is generated regardless of the currently-detected duration of the button-down event. The packet is transmitted over a communication channel.
Abstract:
A manufacturing method of a circuit structure is provided. A metal layer having an upper surface is provided. A surface passivation layer is formed on the metal layer. The surface passivation layer exposes a portion of the upper surface of the metal layer, and a material of the metal layer is different from a material of the surface passivation layer. A covering layer is formed on the surface passivation layer, and the covering layer covers the surface passivation layer.
Abstract:
A movable lug and an assistance device cooperated with the movable lug so as to replace the equipment from the rear end of the rack and avoid from being interfered by cables of other equipments. The movable lug includes a first hinge and a second hinge. The movable lug is moved inward to yield the path when replacing the equipment so that the equipment is removed and not interfered by cables of other equipments. The assistance device makes the action of the replacement of the equipment be more smooth.
Abstract:
A circuit board includes a circuit layer, a first solder resist layer, a second solder resist layer and at least one conductive bump. The first solder resist layer is disposed on a lower surface of the circuit layer and has at least one first opening exposing a portion of the lower surface of the circuit layer. The second solder resist layer is disposed on an upper surface of the circuit layer and has at least one second opening exposing a portion of the upper surface of the circuit layer. The conductive bump is disposed inside the second opening of the second solder resist layer and directly connects to the upper surface of the circuit layer exposed by the second opening. A top surface of the conductive bump is higher than a second surface of the second solder resist layer.
Abstract:
A heat dissipation substrate includes a heat sink, a metal base and an elastic structure. The heat sink includes a carrying portion and supporting portions. The supporting portions are parallel to one another and disposed on a lower surface of the carrying portion. The supporting portions are perpendicular to the carrying portion and surround an accommodating space with the carrying portion. The carrying portion has first rough surface structure disposed on a portion of the lower surface and located in the accommodating space. The metal base is disposed below the heat sink and has an assemble surface and a second rough surface structure disposed on a portion of the assemble surface and corresponding to the first rough surface structure. The first and second rough surface structures and the supporting portions define a fluid chamber in which the elastic structure is disposed, and a working fluid flows in the fluid chamber.