Abstract:
To provide a substrate for mounting a semiconductor element, in which fine-pitch wiring layers are formed to allow a semiconductor element to be mounted, while heat generated in the semiconductor element will not result in a decrease in reliability. Semiconductor-element mounting substrate sandwiches low-thermal-expansion substrate with upper interlayer resin layer and lower interlayer resin layer, and conductive circuit of organic substrate and first conductive circuit of low-thermal-expansion substrate are connected by via conductor formed in interlayer resin layer. Therefore, low-thermal-expansion substrate for mounting semiconductor element may be connected to organic substrate that is connected to outside substrates, without arranging an organic substrate and resin layers on the lower surface of low-thermal-expansion substrate, where impact from the thermal history of semiconductor element is notable.
Abstract:
The present invention relates to a method of manufacturing an image sensor module including attaching an image sensor on one side of a double-sided flexible printing circuit board (FPCB) provided with a window such that the image sensor module covers the window; and mounting at least one electric part on the other side of the double-sided FPCB on which the image sensor is attached.
Abstract:
A power interconnection system is provided including a printed circuit board (10), a voltage regulator package (30), and an electrical connection socket (20) adapted for receiving a chip package (40) therein. The electrical socket and the voltage regulator package are mounted and electrically coupled to opposite surfaces of the printed circuit board. Thus, the voltage regulator package and the chip package are held in a substantially opposed relationship relative to the printed circuit board after the chip package is mounted onto the socket. Therefore, with such configuration, a lower impedance connection is achieved between the chip package and the voltage regulator package in comparison with the conventional configuration.
Abstract:
A circuit board includes balls as electrodes in a grid, a power supply wiring pattern area connected to power supply terminals of an integrated circuit mounted thereon, and a feeding pattern area connected to a feeding point; the balls include first and second power supply ball groups connected respectively to power supply terminal arrays, at a predetermined interval, of the integrated circuit, and the power supply wiring pattern area includes first and second power supply connection patterns connected respectively to the first and second ball groups, and at least one connection pattern connecting the first and second power supply connection patterns noncontact to the balls, and has first and second connection portions connected respectively to the feeding pattern area and one electrode of a first bypass capacitor, and the second power supply connection pattern has a third connection portion connected to one electrode of a second bypass capacitor.
Abstract:
Structures employed by a plurality of packages, printed circuit boards, connectors and interposers to create signal paths which reduce the deleterious signal quality issues associated with the use of through-holes. Disclosed structures can coexist with through-hole implementations.
Abstract:
A suspension board with circuit includes a conductive pattern, a board main body portion on which a magnetic head is mounted, and an auxiliary portion capable of being folded back with respect to the board main body portion so as to face a back surface of the board main body portion. The conductive pattern includes a first conductive pattern including a first terminal electrically connected to an external circuit, and a second terminal electrically connected to the magnetic head, and a second conductive pattern including a third terminal electrically connected to the external circuit, and a fourth terminal electrically connected to an electronic element. Both of the first terminal and the second terminal are disposed on the board main body portion. The third terminal is disposed on the board main body portion or on the auxiliary portion, and the fourth terminal is disposed on the auxiliary portion.
Abstract:
A multilayered printed circuit board includes a first surface layer that includes a semiconductor integrated circuit, a second surface layer that includes a bypass capacitor and that is opposite to the first surface layer, a main power supply wiring layer, and a ground layer between the first and second surface layers. In the multilayered printed circuit board, one terminal of the bypass capacitor is connected to a midpoint of a wiring path from the main power supply wiring layer to a power supply terminal of the semiconductor integrated circuit, and an impedance of a first wiring path from the main power supply wiring layer to the terminal of the bypass capacitor is higher than an impedance of a second wiring path from the terminal of the bypass capacitor to the power supply terminal of the semiconductor integrated circuit.
Abstract:
A constant-temperature type crystal oscillator includes: a crystal unit that is installed on one principal surface of a circuit substrate, and chip resistors, which function as heating elements, and which are installed on the other principal surface of the circuit substrate so as to face a principal surface of the crystal unit, the chip resistors heating up the crystal unit to keep an operational temperature of the crystal unit constant. A heating metal film facing the principal surface of the crystal unit is provided on the one principal surface of the circuit substrate. A heat conducting material is interposed between the principal surface of the crystal unit and the heating metal film to perform thermal coupling therebetween. The heating metal film is thermally coupled to electrode terminals of the chip resistors via a plurality of electrode through holes.
Abstract:
According to one embodiment, an electronic device includes a housing, a circuit board housed in the housing, and a reinforcing member. The circuit board has a first surface and a second surface on the rear of the first surface. The first surface has a first electronic component mounted thereon. The second surface has a second electronic component mounted thereon at an opposite position of the first electronic component. The reinforcing member includes a base member and a bridge. The base member is provided on the second surface to reinforce a first mount area on which the first electronic component is mounted. The bridge passes through the first mount area, and extends, across and over the second electronic component, from at least two points on the base member.
Abstract:
The present invention provides a system and method for employing leaded packaged memory devices in memory cards. Leaded packaged ICs are disposed on one or both sides of a flex circuitry structure to create an IC-populated structure. In a preferred embodiment, leads of constituent leaded IC packages are configured to allow the lower surface of the leaded IC packages to contact respective surfaces of the flex circuitry structure. Contacts for typical embodiments are supported by a rigid portion of the flex circuitry structure and the IC-populated structure is disposed in a casing to provide card structure for the module.