Abstract:
A capacitive precursor (100) and packaged semiconductor devices therefrom includes a substrate (105), a plurality of electrically conductive material layers (111-118) stacked on the substrate (105). The plurality of electrically conductive layers (111-118) provide first and second patterns (200 and 250). The first patterns (200) each include at least a first pair of overlaying areas free of the electrically conductive material, and the second patterns (250) each include at least a second pair of overlaying areas free of the electrically conductive material. The first pair of areas overlay areas of the second pattern having the electrically conductive material and the second pair of areas overlay areas of the first pattern having the electrically conductive material. A plurality of dielectric layers (101-107) are interposed between neighboring electrically conductive material layers (111-118) for electrical isolation. One or more capacitive precursors can be dropped onto or into a board and during assembly of a packaged semiconductor device and have electrically conducting layers associated with its respective plates connected together to form a capacitor during assembly using conventional assembly steps.
Abstract:
The invention provides an embedded multilayer chip capacitor, and a printed circuit board having the same. The embedded multilayer chip capacitor has a capacitor body having a plurality of dielectric layers stacked one on another; a plurality of first and second internal electrodes formed inside the capacitor body, separated by the dielectric layers; and first and second vias extended vertically inside the capacitor body. The first via is connected to the first internal electrodes and the second via is connected to the second internal electrodes. The first via is led to a bottom of the capacitor body and the second via is led to a top of the capacitor body.
Abstract:
A multi-layer board having a superior decoupling function in a low frequency band and a radio frequency band. The multi-layer board includes a board body having a plurality of stacked dielectric layers, power terminals connected through a via, ground terminals connected through a via and an integrated circuit component connected to the power and ground terminals. The multi-layer board also includes a power line unit connected to the power terminals and the integrated circuit component and a ground line unit connected to the ground terminals and the integrated circuit component. The multi-layer board further includes at least one multilayer chip capacitor mounted on the board body and connected between the power terminal and the ground terminal formed on the board body and at least one thin film capacitor mounted inside the board body and connected between the power line unit and the ground line unit.
Abstract:
A multi-layer board having a superior decoupling function in a low frequency band and a radio frequency band. The multi-layer board includes a board body having a plurality of stacked dielectric layers, power terminals connected through a via, ground terminals connected through a via and an integrated circuit component connected to the power and ground terminals. The multi-layer board also includes a power line unit connected to the power terminals and the integrated circuit component and a ground line unit connected to the ground terminals and the integrated circuit component. The multi-layer board further includes at least one multilayer chip capacitor mounted on the board body and connected between the power terminal and the ground terminal formed on the board body and at least one thin film capacitor mounted inside the board body and connected between the power line unit and the ground line unit.
Abstract:
An electronic package is provided, having a flexible substrate, a first plurality of conductors, and a second plurality of conductors. The flexible substrate has first and second portions with a fold portion between the first and second portions, and is folded at the fold portion to position the second portion over the first portion. Each one of the first plurality of conductors runs from the first portion over the fold portion onto the second portion. Each one of the second plurality of conductors runs from the first portion onto the second portion without running over the fold portion.
Abstract:
An electrical device which comprises first and second laminar electrodes and a laminar PTC resistive element sandwiched between them, the device comprising: (a) a main portion which comprises a main part of the first electrode, a main part of the second electrode, and a main part of the resistive element; and (b) a first connection leg which extends away from the main portion and which comprises a first leg part of the first electrode which is integral with the main part of the first electrode, and a first leg part of the resistive element which is integral with the main part of the resistive element. Such devices can be secured to circuit boards in a variety of ways, and to elastically deformed terminals. Preferably preferred devices contain two laminar electrodes, with a PTC element between them, and a cross-conductor which passes through the thickness of the device and contacts one only of the two electrodes. The cross-conductor permits connection to both electrodes from the same side of the device, and also makes it possible to carry out the steps for preparing such devices on an assembly which corresponds to a number of individual devices, with division of the assembly as the final step.
Abstract:
Thin-profile battery circuits and constructions, and in particular button-type battery circuits and constructions and methods of forming the same are described. In one implementation, a substrate is provided having an outer surface with a pair of spaced electrical contact pads thereon. At least two thin-profile batteries are conductively bonded together in a stack having a lowermost battery and an uppermost battery. The batteries include respective positive and negative terminals. The lowermost battery has one of its positive or negative terminals adhesively bonded to one of the pair of electrical contact pads while the uppermost battery has one of its positive or negative terminals electrically connected to the other of the pair of electrical contact pads. The batteries can be provided into parallel or series electrical connections.
Abstract:
Holes are formed in a ceramic substrate before sintering, magnetic parts and dielectric parts are fitted in the holes and the substrate is sintered at a temperature equal to or lower than the sintering temperature of the magnetic parts. It is possible to obtain a very compact high frequency integrated circuit, particularly, a micro wave integrated circuit which can be utilized in a frequency band of several tens GHz, by using hard ferrite as a material of the magnetic parts and magnetizing them after the sintering.
Abstract:
A part holder includes a part holding portion. In this part holding portion, a leadless part is held by a part receiving portion and an engaging piece. In such a state, the leadless part is inserted in a hole formed in a printed circuit board. At this time, a resilient piece provided on a leg of the part holder comes into abutment against an inner edge of the hole, whereby the part holder is fixed by the hole. Also, the part inserted in the hole is urged onto one surface of the hole by a resilient portion of the part holder. Thus, a pattern formed on one main surface of the part is closely contacted with a pattern formed on a backside of the printed circuit board.
Abstract:
Thin-profile battery circuits and constructions, and in particular button-type battery circuits and constructions and methods of forming the same are described. In one implementation, a substrate is provided having an outer surface with a pair of spaced electrical contact pads thereon. At least two thin-profile batteries are conductively bonded together in a stack having a lowermost battery and an uppermost battery. The batteries include respective positive and negative terminals. The lowermost battery has one of its positive or negative terminals adhesively bonded to one of the pair of electrical contact pads while the uppermost battery has one of its positive or negative terminals electrically connected to the other of the pair of electrical contact pads. The batteries can be provided into parallel or series electrical connections.