Abstract:
A circuit module containing a ceramic carrier substrate to carry electronic parts, ceramic substrate pads provided on a surface of the ceramic carrier substrate, and a lid having a cavity and a bottom surface joined to the ceramic substrate pads with solder, the lid being a stepped lid having protrusions adjacent to the cavity, and dents adjacent to the cavity with the protrusions intervening therebetween, the protrusions being in contact with the ceramic carrier substrate with a prescribed distance to the ceramic substrate pads, and the dents being joined to the ceramic substrate pads with solder.
Abstract:
The crystal oscillator has a configuration where circuit elements including a crystal unit are arranged on a mounting board comprising external terminals, opening end faces of a concave metal cover are made to touch the surface of the mounting board, clearances from the opening end faces are comprised in the central regions at both ends in the width direction of the metal cover, protruding parts, which extend from the opening end faces and have a protrusion on an inner face, are comprised at both ends in the longitudinal direction of the metal cover, and each of the protruding parts is elastically inserted in a groove provided on both side faces in the longitudinal direction of the mounting board 1 and bonded by solder, wherein the tip side of each protrusion is thrust and bites into a metal film provided in the groove.
Abstract:
A circuit board includes an analog area and a digital area. The analog area includes an analog ground layer and an analog wiring layer formed on the analog ground layer. The digital area includes a digital ground layer and a digital wiring layer formed on the digital ground layer. The digital ground layer is connected with the analog ground layer to form a main ground layer. The digital wiring layer is separate from the analog wiring layer.
Abstract:
Circuit structures and methods of fabrication are provided for facilitating implementing a complete electronic system in a compact package. The circuit structure includes, in one embodiment, a chips-first multichip base layer with conductive structures extending therethrough. An interconnect layer is disposed over the front surface of the multichip layer and includes interconnect metallization electrically connected to contact pads of the chips and to conductive structures extending through the structural material. A redistribution layer, disposed over the back surface of the multichip layer, includes a redistribution metallization also electrically connected to conductive structures extending through the structural material. Input/output contacts are arrayed over the redistribution layer, including over the lower surfaces of at least some integrated circuit chips within the multichip layer, and are electrically connected through the redistribution metallization, conductive structures, and interconnect metallization to contact pads of the integrated circuit chips of the multichip layer.
Abstract:
A shield plate arranged between a connector and a circuit board for covering and shielding parts of metal pins sticking out from the circuit board when a connector provided with a board mounting surface having a plurality of metal pins and a connector connection surface is mounted at an end of the circuit board, provided with an connector-engagement part, a shield part of the metal pins, a mounting part having press-fit pins for insertion, and support parts of the press-fit pins and flexible parts at a part between the shield part and the mounting part, the press-fit pins becoming vertical to the circuit board in the state with the engagement part engaged with the connector and the free end parts of the press-fit pins provisionally inserted into the engagement holes, thereby enabling the press-fit pins to be press-fit into the engagement holes all at once by a pushing action of the support parts.
Abstract:
The system includes a circuit board, a semiconductor module, a heat dissipator, and at least one thermal via. The circuit board has substantially flat opposing first and second sides. The semiconductor module includes multiple semiconductor devices. The semiconductor module is oriented substantially parallel to the circuit board near the first side, while the heat dissipator is disposed near the second side. The thermal via extends through the circuit board to thermally couple the semiconductor module to the heat dissipator, which may be a heat spreader, heat sink, cooling fan, or heat pipe.
Abstract:
A SIM card connector of a portable wireless terminal has a structure that forms a space thereunder using its lower edges to place electronic parts of a printed circuit board (PCB) within the space, so that the PCB can increase its space efficiency. The SIM card connector further forms an electromagnetic wave shield around the space, so that the electromagnetic wave shield can block electromagnetic waves generated from the electronic parts.
Abstract:
For improving efficiency of a power device having an exposed surface capable of radiating energy, a shielding layer is disposed in between the exposed surface and a conductive layer. The shielding layer causes at least a portion of the energy to be directed back into the power device, thereby substantially preventing the energy from inducing eddy currents in the conductive layer. The conductive layer is fabricated from a metal foil for compliance with electromagnetic energy leakage regulations.
Abstract:
A circuit board connection structure and a circuit board connection method, which can extend an area for mounting electronic components and can simplify the manufacturing process, are provided.A circuit board connection structure 30 includes: a reverse face circuit pattern 43 (see FIG. 3), prepared on a reverse face 32B of a first circuit board 31; and a first electronic component 45 and a second electronic component 46, mounted on the reverse face circuit pattern 43. According to this circuit board connection method, during a process for connecting the first and second circuit boards 31 and 35, a pressing jig 55, which includes first and second contact faces 56 and 57 that respectively contact top portions 45A and 46A of the first and second electronic components 45 and 46 and a receiving face 58, which contacts a receiving face 51 and is parallel to the first circuit board 31, is arranged between the top portions 45A and 46A of the first and second electronic components 45 and 46 and the receiving base 51.
Abstract:
There is provided a wiring board having a shield function. The wiring board includes: a plurality of conductive shield patterns adapted to surround a circumference of at least one electronic component mounting area on the wiring board, the plurality of conductive shield patterns being adjacent to each other; and at least one inductor formed of a conductive pattern and provided between the conductive shield patterns.