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 compound carrier board structure of Flip-Chip Chip-Scale Package and manufacturing method thereof provides a baseplate with an opening bonded to a carrier board in order to form a compound carrier board structure. A die is placed in the opening and bonded to the carrier board. A sealant is filled in a gap between surrounding walls of the opening and the die at a height lower than the die to fixedly place the die within the opening and to leave a non-active surface of the die exposed.
Abstract:
A compound carrier board structure of Flip-Chip Chip-Scale Package and manufacturing method thereof provides a baseplate with a penetrating rectangular opening bonded to a non-conductive film then a carrier board in order to form a compound carrier board structure. The baseplate is constructed with a low Thermal Expansion Coefficient material.
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 multilayer substrate structure includes a first plastic sheet, a second plastic sheet, a first circuit pattern layer, a second circuit pattern layer, and an interlayer connection pad. A first connection plug connected to the interlayer connection pad fills in a first opening of a first plastic sheet and is connected to a first connection pad of the first circuit pattern layer. A second connection plug fills a second opening of the second plastic sheet and is connected to a second connection pad of the second circuit pattern layer such that the second circuit pattern layer is electrically connected to the first circuit pattern layer via the interlayer connection pad. Therefore, even if there is little offset, it is possible to overcome the alignment tolerance and assure electrical connection between the circuit layers as desired.
Abstract:
An insulation layer structure includes an insulation layer, at least one glass fiber embedded in the insulation layer and at least one opening penetrating through the insulation layer and cutting off the glass fiber. The glass fiber projects from a sidewall of the opening such that the ratio of the length of the glass fiber projecting from the sidewall to the width of the opening is 0.2˜33%. With the glass fiber projecting from the sidewall of the opening, the sidewall of the opening has large surface roughness and the surface area to contact with the electrolyte. As a result, the crystal growth rate for the electrolyte onto the sidewall is accelerated. Therefore, the adhesion between the electroplating layer and the sidewall of the opening is increased, thereby improving the reliability and the yield rate of the product.
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:
A package structure includes a thin chip substrate, a stabilizing material layer, a chip and a filling material. A first circuit metal layer of the substrate is inlaid into a dielectric layer and a co-plane is defined by the first circuit metal layer and the dielectric layer and is exposed from the dielectric layer. The bonding pads of the substrate are on the co-plane, have a height higher than the co-plane and connected to the first circuit metal layer. The stabilizing material layer is provided on two sides of the co-plane to define a receiving space for accommodating the chip. The filling material is injected into the receiving space to fasten the pins of the chip securely with bonding pads. Since no plastic molding is required, a total thickness of the package structure and the cost is reduced. The stabilizing material layer prevents the substrate from warping and distortion.
Abstract:
A method of thin printed circuit board wet process consistency on the same carrier, and more particularly to a printed circuit board in the developing, copper plating, stripping, etching and other wet processes uses the same frame as a carrier from the beginning to the end of the wet process, such that the thin printed circuit board is conducted a continuous and automatic wet process to avoid disassembly, storage and transportation between each process. Moreover, when using the flame, the thin printed circuit board is smooth and flattening in the wet process for avoiding “water effect,” the effective area is not exposed to any mechanical members for preventing scratches, and there are point contacts between the thin printed circuit board and the frame for preventing chemical residue. Accordingly, the present invention can not only enhance the yield of the thin printed circuit board but also shorten the production time.