摘要:
A power electronic module includes heat generating power electronic devices mounted on a circuit board within a connector outline circumscribing circuit board through-holes for receiving pin terminals of a connector assembly. The power electronic devices are thermally and electrically coupled to the circuit board through-holes and connector pin terminals to dissipate heat generated by the power electronic devices.
摘要:
According to the configuration and the manufacturing method of forming a moisture proof agent on both surfaces of a circuit substrate after soldering a capacitor connection pin in a vertical direction to the circuit substrate, and electrically connecting the capacitor so as to be in a perpendicular direction to the length direction of the capacitor connection pin at the upper space of the circuit substrate, the possibility of the moisture proof agent attaching to the capacitor is eliminated, the productivity enhances since the moisture proof agent can be easily formed on both surfaces of the circuit substrate, and a capacitor unit of miniaturized and low height configuration is realized since the capacitor is mounted in the horizontal direction in the upper space with respect to the circuit substrate.
摘要:
A portable electronic device includes a case, a circuit board in the case, an electronic component in the case. The electronic component includes a connection terminal and a portion facing a side surface of the circuit board. The portable electronic device also includes a terminal member for connecting the circuit board and the connection terminal of the electronic component.
摘要:
Printed circuit boards (PCB's) with edge connectors undergo bending stresses whenever the edge connectors are plugged into mating connectors. The bending stresses causes deformation of the printed circuit board, which can have deleterious effects on electrical components thereon. Slots are provided on the PCB to enable the portion of the PCB surrounding the edge connector to bend relative to the remainder of the PCB, thereby confine the bending to a localized area between the ends of the slots, and isolate the electrical components from any stresses caused thereby.
摘要:
Flexible printed circuit boards interconnect to adjacent electronic devices through one or more of high speed data, low speed data, high current, and ground lines and pads. The design of the high speed data pads and traces and adjacent ground pads and traces maintains a desired impedance in the flexible circuit and at the transition from the flexible circuit to a printed circuit board, a ceramic header, or other device to ensure high speed operation. The pads are preferably arranged in a two dimensional geometry such that a connecting area of the flexible circuit is narrower than it would preferably be if the pads were arranged linearly. The two dimensional array also allows the use of the high current thermoelectric cooler pads, which require large surface areas that may otherwise not fit in a conventional linear array.
摘要:
An optical disk apparatus is disclosed which includes a first printed circuit board, on which a first circuit pattern is formed; a rotor, on which an optical disk may be placed, and which is electrically connected with the first circuit pattern; a second printed circuit board, which is stacked adjacent to the rotor on a surface of the first printed circuit board, and on which a second circuit pattern is formed; a sensor unit, which is mounted on the second printed circuit board in electrical connection with the second circuit pattern, and which is configured to sense a rotation of the optical disk; and a support plate, which supports the first printed circuit board and the rotor. In this optical disk apparatus, a separate printed circuit board can be utilized to support the sensor unit, whereby manufacturing costs can be reduced and working efficiency can be improved.
摘要:
A printed circuit board includes a source interconnect and a ground interconnect, and the circuit board has a two-dimensional geometry having a corner. Protruding portions are provided in circumferences of the source interconnect and the ground interconnect in regions except the corner in plan view, and the source interconnect and the ground interconnect are connected to a common first decoupling capacitor in each of the protruding portions.
摘要:
A tube installation of a backlight module allowing fast and easy assembly and disassembly of tube without depending on a soldering process is comprised of a substrate, multiple tubes and a locating means; a terminal of each tube being provided with a conductor comprised of a first bending portion and a second bending portion with a terminal of the second bending portion serving as a contact portion; the locating means being placed below the substrate for the contact portion to contact the substrate so to secure the tube to where above the substrate.
摘要:
An optical transmitter module is described. The optical transmitter module includes a lead pin for electrically connecting the inside and outside of a housing, and a flexible printed circuit board connected to the lead pin. The flexible printed circuit board has a signal pattern and two ground conductor patterns to be connected to an optical modulation element, a laser terminal pattern to be connected to a semiconductor laser, a Peltier terminal pattern to be connected to a Peltier element, and two covering conductive layers in addition to a layer on which such patterns are formed. The covering conductive layers cover all the patterns except for the signal pattern.
摘要:
A flexible circuit board of a liquid crystal display device includes a first insulating film, a plurality of conductive patterns formed on the first insulating film, a second insulating film formed on the first insulating film to cover the conductive pattern, a plurality of light sources coupled to the conductive pattern, and an upper light absorbing layer formed on an outer circumference of the light source to absorb light emitted from the light source, wherein the upper light absorbing layer is formed in a triangle shape on one side of the light source.