Abstract:
A light source module includes a circuit board having a plurality of chip mounting regions, the plurality of chip mounting regions respectively having at least one connection pad; at least one alignment component respectively disposed on the plurality of chip mounting regions, and having a convex or concave shape; and a plurality of LED chips respectively mounted on the plurality of chip mounting regions, respectively having at least one electrode electrically connected to the at least one connection pad, and respectively coupled to the at least one alignment component.
Abstract:
A switch component includes a spring plate and a cover of rubber. The cover of rubber covers at least one part of an upper surface of the spring plate. The cover of rubber includes at least one pair of supporting portions that support the spring plate.
Abstract:
In a mark forming step in a manufacturing method for a component incorporated substrate in which an electronic component is positioned with reference to a mark formed in a copper layer, when an imaginary line extending from a search center of a search range of a sensor, to an edge side of the search range is represented as a search reference line and an imaginary line extending, in a state in which a mark center, is matched with the search center, from the mark center in the same direction as the search reference line to an outer ridgeline of the mark is represented as a mark reference line, the mark formed in a shape in which the outer ridgeline of the mark is present in a position where a length of the mark reference line is in a range of 30% or more of the search reference line.
Abstract:
A wiring substrate includes a block with substrates laid out in an array. The block includes corners and a plan view center. Each substrate includes a substrate body. Pads are formed on the substrate body. Each pad includes a pad surface. The pads of the substrates include first pads, which are the pads of one of the substrates located in at least one of the corners of the block. The pad surface of each of the first pads includes a first axis extending from the first pad toward the plan view center of the block. The pad surface of each of the first pads has a first length along the corresponding first axis and a second length along a second axis, which is orthogonal to the first axis. The first length is longer than the second length.
Abstract:
A submount for connecting a semiconductor device to an external circuit, the submount comprising: a planar substrate formed from an insulating material and having relatively narrow edge surfaces and first and second relatively large face surfaces; at least one recess formed along an edge surface; a layer of a conducting material formed on a surface of each of the at least one recess; a first plurality of soldering pads on the first face surface configured to make electrical contact with a semiconductor device; and electrically conducting connections each of which electrically connects a soldering pad in the first plurality of soldering pads to the layer of conducting material of a recess of the at least one recess.
Abstract:
First and second signal wiring patterns are formed in a first conductor layer. A first electrode pad electrically connected to the first signal wiring pattern through a first via and a second electrode pad electrically connected to the second signal wiring pattern through a second via are formed in a second conductor layer as a surface layer. A third conductor layer is disposed between the first conductor layer and the second conductor layer with an insulator interposed between those conductor layers. A first pad electrically connected to the first via is formed in the third conductor layer. The first pad includes an opposed portion which overlaps the second electrode pad as viewed in a direction perpendicular to the surface of a printed board and which is opposed to the second electrode pad through intermediation of the insulator. This enables reduction of crosstalk noise caused between the signal wirings.
Abstract:
Provided is an illumination device that includes a light emitting device having a first electrode and a second electrode and a mounting substrate including a first wiring pattern and a second wiring pattern. The first wiring pattern and the second wiring pattern face and are bonded to the first electrode and the second electrode, respectively, through a bonding material. The second electrode and the second wiring pattern are configured to be at least partially overlapped with each other in a plan view irrespective of an orientation of the light emitting device, under condition that the first electrode and the first wiring pattern are at least partially overlapped with each other in the plan view.
Abstract:
A printed wiring board including an insulation layer, a conductive circuit on the insulation layer, an outermost interlayer resin insulation layer formed on the insulation layer and the conductive circuit and having a via-conductor opening connected to the conductive circuit, a land structure including a first land formed on the outermost interlayer resin insulation layer around the via-conductor opening and a second land formed on the outermost interlayer resin insulation layer around the first land, and a via conductor formed in the via-conductor opening through the outermost interlayer resin insulation layer such that the first land of the land structure on the outermost interlayer resin insulation layer is connected to the conductive circuit on the insulation layer. The land structure has a space between the first land and second land of the land structure, and the first land of the land structure is directly connected to the via conductor.
Abstract:
A circuit board includes a board, a first signal trace and a second signal trace on the board, a first solder pad formed on the board and connected to a terminal of the first signal trace near to one end of the second signal trace, and a second pad formed on the board and connected to a terminal of the second signal trace near to the first solder pad. The second pad is apart from the first pad. The first pad or the second pad is coated with solder. After heated, the solder melts and spread to the second pad or the first pad, thereby connecting the first signal trace to the second signal trace.
Abstract:
A cut-edge positioning type soldering structure and a method for preventing a pin deviation can prevent a plurality of pins of an electronic component from being deviated when the pins are soldered onto a printed circuit board by a solder, and each of at least two solder pads includes at least two cut edges, and the solder pads are installed in an alignment direction on the printed circuit board, such that the cut-edge positioning type soldering structure and the method for preventing a pin deviation can improve the efficiency of manufacturing processes and reduce the manufacturing cost.