Abstract:
PURPOSE: A circuit board and a manufacturing method thereof are provided to prevent the deflection of a ball land by forming a plating layer inside a via hole. CONSTITUTION: A circuit board(100) comprises a substrate(101), a conductive layer(130), a ball land(140), and a plating layer(150). The substrate is made of insulating materials. The ball land is formed on the substrate. The via hole passes through the substrate in order to correspond to the ball land. The plating layer is formed inside the via hole. The plating layer is contact with the ball land. The conductive layer is formed on the inner surface of the via hole. The conductive layer is contacted with the plating layer and the substrate. The plating layer includes one selected from a group made of Cu, Ni, Cr, and Au.
Abstract:
The invention relates to a kitchen appliance for processing foodstuffs, with an electric motor and a controller module (10) for the electric motor, wherein the controller module (10) has a circuit board (12) for electrical and/or electronic components (14), and wherein the circuit board (12) has at least one first and one second contact pole (15, 16), which cooperate with a switching bridge (20) to control the electric motor, wherein the contact poles (15, 16) are elongated in shape and run in parallel at least in certain sections.
Abstract:
A printed wiring board having assembled thereon a grid array type package, a multi-terminal device with many terminals arranged in matrix, is provided, through first signal connection holes, signal lines, and second connection holes, with many numbers of lands divided into plural blocks, being arranged in matrix on a first layer to connect each terminal of the multi-terminal device correspondingly, signal line patterns connected with many lands, and drawn out in the same direction per block, and first signal patterns from lands positioned on the innermost line of many lands. Then, the wiring patterns of the signal lines are drawn out regularly from many lands formed in matrix on the assembling surface of the grid array type package to make it easier for the printed wiring board to effectuate wiring connections without making them complicated or increasing the number of layers of the printed wiring board. Also, with the provision of ground patterns that surround signal lines, it is made possible to reduce unwanted radiation, as well as to suppress the occurrence of malfunctions of electronic equipment due to reflections and ground bounces.
Abstract:
A printed wiring board having assembled thereon a grid array type package, a multi-terminal device with many terminals arranged in matrix, is provided, through first signal connection holes, signal lines, and second connection holes, with many numbers of lands divided into plural blocks, being arranged in matrix on a first layer to connect each terminal of the multi-terminal device correspondingly, signal line patterns connected with many lands, and drawn out in the same direction per block, and first signal patterns from lands positioned on the innermost line of many lands. Then, the wiring patterns of the signal lines are drawn out regularly from many lands formed in matrix on the assembling surface of the grid array type package to make it easier for the printed wiring board to effectuate wiring connections without making them complicated or increasing the number of layers of the printed wiring board. Also, with the provision of ground patterns that surround signal lines, it is made possible to reduce unwanted radiation, as well as to suppress the occurrence of malfunctions of electronic equipment due to reflections and ground bounces.
Abstract:
Systems and methods for magnetic coupling. One system includes an external computing device and a connector having a conductive end. The system also includes a printed circuit board. The printed circuit board includes a connector side opposite a back side. The connector side has a contact pad with an aperture. The printed circuit board also includes a magnet positioned on the back side of the printed circuit board. The magnet provides a magnetic field configured to provide magnetic attraction forces to a connector contacting the contact pad. The printed circuit board also includes a communication terminal. The system also includes a circuit in communication with the printed circuit board through the connector and contact pad.
Abstract:
In the present invention, in a mark forming step in a manufacturing method for a component incorporated substrate in which an electronic component (14) is positioned with reference to a mark (12) formed in a copper layer (4), when an imaginary line extending from a search center (74), which is a center of a search range (72) of a sensor, to an edge side (78) of the search range (72) is represented as a search reference line (80) and an imaginary line extending, in a state in which a mark center (76), which is the center of the mark (12), is matched with the search center (74), from the mark center (76) in the same direction as the search reference line (80) and to an outer ridgeline (25) of the mark (12) is represented as a mark reference line (82), the mark (12) is formed in a shape in which the outer ridgeline (25) of the mark (12) is present in a position where a length of the mark reference line (82) is in a range of 30% or more of the search reference line (80).
Abstract:
The invention relates to a laboratory sample instrument (200) with a cable holding space (185) in which a printed circuit board cable device (100) is arranged, more particularly to a dispenser or a pipette. The printed circuit board cable device has at least one printed circuit board (102), which has a first and a second side of the board, and, arranged in succession, at least one first printed circuit board section (A), at least one second printed circuit board section (B) and at least one third printed circuit board section (C), with the printed circuit board having a number of conductor tracks (121,122) which, at least in sections, are arranged parallel with respect to one another on the printed circuit board and extend from a first track section, which is arranged in the first printed circuit board section, via the second printed circuit board section to the third printed circuit board section, in which a second track section is arranged, wherein, in the second printed circuit board section, at least one conductor track (121a, 122a) is arranged on the first side of the board and at least one conductor track (121b, 122b) is arranged on the second side of the board.
Abstract:
A printed circuit board assembly includes two-dimensional arrays of connectors (14,16) to provide significantly higher data transfer rates than typical one-dimensionally arranged connectors, without sacrificing board space. The assembly includes a plurality of connection pads (14,16) on each printed circuit board (10,12). A layer of anisotropically conducting material (26) is placed between the connection pads and the boards are held together by fastening screws (28).