Abstract:
Disclosed is a method of final defect inspection, including preparing a final defect inspection apparatus which includes a host device, a microscope, a bar code scanner, a support tool and a signal transceiver, using the host device to calibrate an original point in an outline of the circuit board based on a plurality of original mark positions generated by an electromagnetic pen, using the electromagnetic pen to mark each defect position on the inspection region on the circuit board where any defect is found through the microscope, using the signal transceiver to receive and transmit each defect position to the host device, and using the host device to calculate the coordinate of a scrap region based on a relative position between the original point and each defect position so as to generate a shipment file.
Abstract:
According to one embodiment, coupling capacitance in a state in which a first heat radiation member is arranged between parallel flat plates of a first capacitor formed by a surface of a housing opposed to one surface of a printed circuit board and the printed circuit board is smaller than coupling capacitance in a state in which an integrally formed object having a relative dielectric constant of 5.8 is arranged between the first capacitor to cover a first radiating region containing the controller and the first nonvolatile semiconductor memories.
Abstract:
Disclosed is a method of final defect inspection, including preparing a final defect inspection apparatus which includes a host device, a microscope, a bar code scanner, a support tool and a signal transceiver, using the host device to calibrate an original point in an outline of the circuit board based on a plurality of original mark positions generated by an electromagnetic pen, using the electromagnetic pen to mark each defect position on the inspection region on the circuit board where any defect is found through the microscope, using the signal transceiver to receive and transmit each defect position to the host device, and using the host device to calculate the coordinate of a scrap region based on a relative position between the original point and each defect position so as to generate a shipment file.
Abstract:
A flexible printed circuit board having a copper foil character with good visibility and without copper foil pattern peeling. The flexible printed circuit board has a base material having optical transparency, a wiring pattern formed on one surface of the base material; a first opaque cover lay film covering a surface of the wiring pattern, a character formed on the other surface of the base material; and a second opaque cover lay film covering a surface of the character. The first opaque cover lay film has an opening portion is formed therein, and the character is formed so as to be visually recognizable through the opening portion.
Abstract:
Provided is a flexible substrate wherein a connection portion between the flexible substrate and an electric circuit board meets requirements of narrow wiring pitch and low resistance at the connection portion. An electric circuit structure, which has the flexible substrate and the electric circuit board to which the flexible substrate is connected, is also provided. A wiring pattern (22) is formed on a flexible base film (21), a connection terminal (25) connected electrically to an electrode terminal of another electric circuit board is arranged at an end portion of the wiring pattern (22), and the connection terminal (25) includes wide connection terminals (25b, 25c) having a terminal width extending across plural lines of the wiring pattern (22).
Abstract:
A method for screen printing a printed circuit board substrate comprises the following steps. A printed circuit board substrate including a copper foil layer is provided. Pluralities of marks are formed on the copper foil layer. A plurality of printing screens are provided, each includes an screen pattern and an opening corresponding to a respective mark. Printing material is applied on the ith screen Si to form an ith printing pattern and cover the ith mark at the ith opening, the ith printing pattern conforms to the ith screen pattern; checking whether the ith mark is covered by the printing material when i is less than N. Printing material is applied on the (i+1)th screen Si+1 so as to form an (i+1)th printing pattern on the copper foil layer and covers the (i+1)th Mark Mi+1 at the (i+1)th opening, if the ith mark is covered by the printing material.
Abstract:
The present invention provides a light emitting diode (LED) circuit board with a multi-directional electrical connection. The board includes a board body with a surface and an assembly plane as well as four sides and corresponding corners, and a plurality of positive and negative electric contacts, separately arranged onto the surface of the board body nearby four sides, and also arranged at intervals. The circuit of the LED circuit board is simplified, helping to facilitate multi-directional electrical connection and expansion, and to improve significantly the paving efficiency of the LED circuit board with better practicability and industrial benefits.
Abstract:
According to one embodiment, coupling capacitance in a state in which a first heat radiation member is arranged between parallel flat plates of a first capacitor formed by a surface of a housing opposed to one surface of a printed circuit board and the printed circuit board is smaller than coupling capacitance in a state in which an integrally formed object having a relative dielectric constant of 5.8 is arranged between the first capacitor to cover a first radiating region containing the controller and the first nonvolatile semiconductor memories.
Abstract:
Variably oriented capacitive elements for printed circuit boards (PCBs) and method of manufacturing the same. In one form the disclosure, a PCB can include a first multiple-layered capacitor including a first orientation and placed along a surface operable to mount electronic components. The PCB can also include a second multiple-layered capacitor including a second orientation different from the first. The second multiple-layered capacitor can be placed along the surface near the first multiple-layered capacitor.
Abstract:
A board inspection device 1 comprises: an inspection unit 50 for inspecting a board P; a board-supplying unit 24 that enables a board P to be manually supplied to the inspection unit 50; and a liquid crystal monitor 4 for displaying prescribed information including the results of an inspection of the board P, wherein the board inspection device 1 is further provided with: a camera 52 for recognizing identification information assigned to the board P; and a control unit 60 that confirms inspection history of the board P based on the identification information acquired via the camera 52 and controls, when it is confirmed that the board P has already been inspected, the liquid crystal monitor 4 to display information to the effect that the board P has already been inspected and prohibits execution of an inspection operation on the board P by the inspection unit 50.