Abstract:
An enhanced chip board package structure includes a chip board and a plurality of enhanced structures, which are formed in the blind openings of the non-effective region of the chip board. Each enhanced structure has an opening. The mechanical strength is reinforced by the enhanced structures without changing the whole thickness so as to overcome the problem of warping. Meanwhile, the three-dimensional stability is thus enhanced. The opening of the enhanced structure can be selectively filled with the filler such that the mechanical strength is further reinforced and the thermally conductive effect is greatly improved.
Abstract:
A chip board package structure includes a circuit board part, a chip board part and a solder used to solder the circuit board part and the chip board part. A chip on the chip board part is connected to an electrical circuit by wiring or soldering. A surface treatment metal layer includes at least nickel, palladium and gold formed on part of the surface of the circuit layer on the chip board. A copper-tin intermetallic compound is formed on joints of the second solder and the surface treatment metal layer, and the other part of the circuit layer is directly connected to the solder to form the copper-tin intermetallic compound. In addition to the lower package cost, with the shape feature of the copper-tin intermetallic compound, it is possible to increase the contact area with the solder, thereby improving the reliability of the soldering process and the yield.
Abstract:
A thin package structure with enhanced strength includes a support carrier plate and a thin circuit board. The thin circuit board is formed on the support carrier plate and includes a first circuit layer, a dielectric layer and a second circuit layer. The first circuit layer includes the first circuit patterns and the first connection pads. The dielectric layer covers the first circuit layer. The second circuit layer is formed on or embedded in an upper surface of the dielectric layer and includes the second circuit patterns and the second connection pads. Connection plugs are formed in the dielectric layer to connect the first and second connection pads. The support carrier plate provides mechanical strength to avoid warping or deforming. It is feasible to direct test the package structure without disassembling so as to improve the convenience in testing.
Abstract:
A laminate circuit board with a multi-layer circuit structure which includes a substrate, a first circuit metal layer, a second circuit metal layer, a first nanometer plating layer, a second nanometer plating layer and a cover layer is disclosed. The first circuit metal layer is embedded in the substrate or formed on at least one surface of the substrate which is smooth. The first nanometer plating layer with a smooth surface overlaps the first circuit metal layer. The second nanometer plating layer is formed on the other surface of the substrate and fills up the opening in the cover layer to electrically connect the first circuit metal layer. The junction adhesion is improved by the chemical bonding between the nanometer plating layer and the cover layer/the substrate. Therefore, the circuit metal layer does not need to be roughened and the density of the circuit increases.
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:
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 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 method of manufacturing a thin support package structure includes the steps of: preparing a support plate formed with a plurality of grooves adjacent to an outer rim thereof, forming a releasing material layer on the support plate; forming a first circuit layer on the releasing material layer so as to form a thin circuit board; forming a dielectric layer on the releasing material layer; forming a plurality of openings in the dielectric layer; forming a second circuit layer on the dielectric layer; forming connection plugs by filling the openings; forming a solder mask on the dielectric layer; forming a plurality of notches on the lower surface of the support plate to communicate with the grooves, respectively; and removing the central part of the support plate between the notches and the central part of the releasing material layer on the support plate.
Abstract:
A circuit board structure for high frequency signals includes a substrate and an electrical conductive circuit layer formed on the substrate. The conductive circuit layer includes circuit patterns and connection pads. The circuit pattern includes a base part with a shape of a rectangular block and a circular top part with a hemispherical shape provided on the base part. The circular top part can be modified by a circular bottom part embedded in the dielectric plastic film. Alternatively, a double layer structure with the circular top and bottom parts is formed such that the surface of the circuit pattern is provided with hemispheres to strengthen the reflection, thereby overcoming the problem of signal concentration due to the rectangular structure or the issue of signal attenuation due to surface roughness.
Abstract:
Disclosed is a final defect inspection system, which including a host device, a microscope, a bar code scanner, a support tool, a signal transceiver and an electromagnetic pen. The bar code scanner scans a bar code on a circuit board provided on the support plate. The host device selects data and a circuit layout diagram from the database corresponding to the bar code. The signal transceiver and the electromagnetic pen are electrically connected to the host device. The electromagnetic pen is used to make a mark on a scrap region of the circuit board where any defect is visually found through the microscope. The signal transceiver receives and transmits the positions of the mark to the host device such that the host device calculates the coordinate of a scrap region based on a relative position between an original point and the positions of the mark.