Abstract:
A multilayer printed circuit board may include traces that are printed on selected layers of the board so that the traces extend to the edge of the corresponding layer. When the layers are assembled together, the ends of the traces may be viewable on a side of the printed circuit board. The traces may be arranged to convey information. For example, trace ends may be readable as one or more binary words, as alphanumeric characters or as a bar code.
Abstract:
A communication system is provided that includes both an electromagnetic (“EM”) communication device and an optical communication device including at least a machine readable symbol where at least a portion of the EM communication device and at least a portion of the machine readable symbol are formed from the same material. This material may be, for example, a conductable ink or a conductable foil. If desired, the EM communication device may include an antenna where at least a portion of the antenna includes at least a portion of the machine readable symbol.
Abstract:
A circuit board includes a plurality of conductive layers, a plurality of insulating layers, a telecommunication network connection port and a modem card processing module. A high voltage signal line is laid out at one of the conductive layers. The insulating layers are disposed between each of the conducting layers, respectively. The telecommunication network connection port is disposed on the conductive layers and is electrically connected to one end of the high voltage signal line. The modem card processing module is disposed on the conductive layers and is electrically connected to the other end of the high voltage signal line.
Abstract:
The disclosure provides an article having a circuit mounted with parts characterized by comprising an electronic part soldered with a lead free solder and having an identification marking indicating no inclusion of lead and an electrical appliance including the same. The present invention also provides a recycling method of wastes of the same. The present invention can offer an article having a circuit mounted with parts and an electrical appliance including the same both of which facilitate identification whether lead which is poisonous to human body is contained or not.
Abstract:
A printed circuit board. The novel printed circuit board includes a substrate, a layer of conductive material disposed on the substrate, and a solder mask layer disposed on the conductive layer, the solder mask layer including cutouts shaped as reference text and/or art. The conductive layer is etched to form traces for connecting electronic components to be mounted on the board in a desired pattern to form an electrical circuit and may include pads and lands to which the components are to be soldered. The solder mask layer is made from a material that resists wetting by solder and also includes cutouts in areas where the components are to be soldered to the conductive layer. The reference text and/or art includes readable information for assembling, testing, and/or repairing the circuit board, such as component part numbers, reference designators, pin one identifiers, component outlines, and test point identifiers.
Abstract:
For providing a flexible printed circuit board in which the distance between each of plural wiring patterns is a desired distance by cutting the flexible printed circuit board having plural wiring patterns, plural wiring patterns are formed so as to extend on the surface of an electrically insulative base film, and each of the plural wiring patterns is formed so as to include a portion where the distance between each of them is narrowed along the extending direction of the base film.
Abstract:
Printed circuit boards having patterns of uniform line width can be produced. A lamination apparatus superposes a resist layer on a substrate. Further, the substrate is exposed to light carrying information representing lamination date/time. An exposure apparatus reads out the lamination date/time information before performing exposure and judges whether passage time from the lamination to the current time is within the range of predetermined hold time. If the judgment is NO, the exposure apparatus issues a warning to notify an operator that the passage time from the lamination to the current time is not within the range of the predetermined hold time. The operator may remove the substrate from the exposure apparatus because it is impossible to form a pattern of desirable line width on the substrate.
Abstract:
A substrate structure is disclosed. The substrate structure includes a core substrate, an interconnection portion and a solder mask; herein the core substrate includes a top surface and a bottom surface opposite the top surface. A circuit pattern is disposed on the top surface. The interconnection portion is disposed on the top surface; herein the interconnection portion includes a surface dielectric layer and a surface circuit layer disposed thereon. The surface circuit layer is electrically connected to the circuit pattern, and the surface dielectric layer includes at least a hole that is not covered with the surface circuit layer. The solder mask is disposed on the interconnection portion; herein the solder mask includes an indentation disposed above the hole. Besides, a method for manufacturing the substrate structure is disclosed.
Abstract:
A motherboard including a circuit board, a connecting device and an illumination device is provided. The connecting device and the illumination device are disposed on the circuit board, The illumination device includes at least one lighting element. The lighting element and the connecting device are disposed on the same side of the circuit board.
Abstract:
A manufacturing process and an apparatus for printing imprint on defective board are provided. An automatic printing device is used for replacing operator, so as to reduce manpower and to increase the correctness and veracity of defect mark printing. The manufacturing process includes the following steps: first, an image sensor captures an image of a defect mark and transmits the image to a processing unit for data processing. Next, the data is compared, and an inkjet head is notified of the correct printing position to print ink on the customer identification mark of the printed circuit board.