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 laminate circuit board structure which includes a first circuit metal layer, a first insulation layer, at least one second circuit metal layer, at least one second insulation layer and a support frame is disclosed. The total thickness of the laminate circuit board structure is less than 150 μm. The support frame provided at the outer edge of the co-plane surface formed by the first circuit metal layer and the first insulation layer does not cover the first circuit metal layer, and is formed of at least one metal material. The support frame provides physical support for the entire board structure without influence on the circuit connection so as to prevent the laminate circuit board structure from warping.
Abstract:
A method of manufacturing a chip support board structure which includes the steps of forming a metal substrate structure, forming a photo resist pattern, etching the metal substrate structure to form a paddle, removing the photo resist pattern, pressing an insulation layer against the paddle, polishing the insulation layer, forming a circuit layer and forming a solder resist is disclosed. The metal substrate structure is formed by sandwiching a block layer with two metal substrate layers, multilayer. The metal substrate structure is etched under control to an effective depth such that each paddle thus formed has the same shape and depth. Therefore, the method of the present invention can be widely applied to the general mass production processes to effectively solve the problems in the prior arts due to depth differences, such offset, position mismatch and peeling off in the chip support board.
Abstract:
A method of manufacturing a laminate circuit board with a multilayer circuit structure which includes the steps of forming a metal layer on a substrate, patterning the metal layer to form a circuit metal layer, forming a nanometer plating layer on the circuit metal layer, forming a cover layer to cover the substrate and the nanometer plating layer, forming through holes in the cover layer to generate openings exposing part of the nanometer plating layer, and finally forming a second metal layer on the cover layer to fill up the openings is disclosed. The nanometer plating layer is used to obtain same effect of previously roughening by chemical bonding, such that no circuit width is reserved for compensation, and the density of the circuit increases such that much more dense circuit can be implemented.
Abstract:
A landless multilayer circuit board includes a first substrate, a first circuit, at least one connecting pillar, a second substrate, and a second circuit. The second substrate is on the surface of the first substrate, covering the first circuit, and exposing at least one top of the at least one connecting pillar exposed out of a surface of the second substrate, wherein an area of a portion of the at least one connecting pillar that is exposed out of the surface of the second substrate is greater than an area of a portion of the at least one connecting pillar that is connected to the first circuit. The second circuit is on the surface of the second substrate and the at least one connecting pillar, and connected to the portion of the at least one connecting pillar that is exposed out of the surface of the second substrate.
Abstract:
A manufacturing method of a double layer circuit board comprises forming at least one connecting pillar on a first circuit, wherein the at least one connecting pillar comprises a first end, connected to the first circuit, and a second end, opposite to the first end; forming a substrate on the first circuit and the at least one connecting pillar; drilling the substrate to expose a portion of the second end of the at least one connecting pillar, wherein the other portion of the second end of the at least one connecting pillar is covered by the substrate; and forming a second circuit on the substrate and the portion of the second end of the at least one connecting pillar, wherein an area of the first end connected to the first circuit layer is greater than an area of the portion of the second end connected to the second circuit layer.
Abstract:
An EMI shielding device is provided. A first shielding layer is formed on a first surface of a first substrate, and a first through hole is formed through the first substrate. A second substrate is mounted in an opening of the first through hole, and a second shielding layer is formed on a surface of the second substrate. A conductive paste is mounted between the first substrate and the at least one second substrate to electrically connected the first shielding layer and the second shielding layer. The EMI shielding device is adopted to be mounted on a printed circuit board (PCB) by Surface Mount Technology. Therefore, the EMI shielding device may be firmly mounted on the PCB, and there is not any narrow gap that may leak electromagnetic radiation.
Abstract:
A foil peeling apparatus adapted to a substrate having a foil thereon includes a foil peeling member, a connector and a controller. The foil peeling member has a foil peeling surface. The controller controls the connector to drive the peeling member to move along a path. The foil peeling surface of the peeling member in contact with, with an initial angle, the substrate, feeds toward the substrate for a first displacement, and then moves upwards and toward the substrate when the first feeding angle is decreased.
Abstract:
A landless multilayer circuit board includes a first substrate, a first circuit, at least one connecting pillar, a second substrate, and a second circuit. The second substrate is on the surface of the first substrate, covering the first circuit, and exposing at least one top of the at least one connecting pillar exposed out of a surface of the second substrate, wherein an area of a portion of the at least one connecting pillar that is exposed out of the surface of the second substrate is greater than an area of a portion of the at least one connecting pillar that is connected to the first circuit. The second circuit is on the surface of the second substrate and the at least one connecting pillar, and connected to the portion of the at least one connecting pillar that is exposed out of the surface of the second substrate.
Abstract:
An EMI shielding device is provided. A first shielding layer is formed on a first surface of a first substrate, and a first through hole is formed through the first substrate. A second substrate is mounted in an opening of the first through hole, and a second shielding layer is formed on a surface of the second substrate. A conductive paste is mounted between the first substrate and the at least one second substrate to electrically connected the first shielding layer and the second shielding layer. The EMI shielding device is adopted to be mounted on a printed circuit board (PCB) by Surface Mount Technology. Therefore, the EMI shielding device may be firmly mounted on the PCB, and there is not any narrow gap that may leak electromagnetic radiation.