Abstract:
Disclosed is a method of packaging a chip and a substrate, including the steps of forming a substrate with a thickness ranging from 70 to 150 μm, which comprises a dielectric layer, a circuit metal layer stacked on the dielectric layer and bonding pads higher than the dielectric layer by 10 to 15 μm; forming a stabilizing structure around the substrate to provide a receiving space; disposing the chip on the receiving space and bonding the pins of the chip with the bonding pads; and filling up the receiving space under the chip with a filling material to a total thickness ranging from 300 to 850 μm. Without the plastic molding process, the present invention reduces the cost and the total thickness, and further prevents the substrate from warping by use of the stabilizing fixing structure.
Abstract:
A manufacturing method for a multi-layer circuit board is provided. According to the multi-layer circuit board manufactured by the manufacturing method, the multi-layer circuit structure is disposed on the delivery loading plate through the bottom dielectric layer, the delivery loading plate and the patterned metal interface layer expose the conductive corrosion-barrier layer, and the top-layer circuit of the multi-layer circuit structure is electrically connected to the conductive corrosion-barrier layer through the bottom-layer circuit and the electrical connection layer. Therefore, before the multi-layer circuit board is delivered to the assembly company or before the multi-layer circuit board is packaged with chips, an electrical testing can be applied to the multi-layer circuit board to check if the multi-layer circuit board can be operated normally or not.
Abstract:
A double sided board with buried element and a method for manufacturing the same are disclosed. At least one buried element is fixed on a dielectric layer and embedded in an insulation layer. First and second electrical circuits are formed on upper and lower surfaces of the insulation layer, respectively. At least one through-hole is formed in the insulation layer and filled with a conductive layer to electrically connect the first and the second electrical circuits. The dielectric layer beneath the buried element and the insulation layer above the buried element are provided with at least one opening, respectively, which is filled with the conductive layer, thereby connecting the conductive layer and external circuits or electrical elements. Additionally, the first and second electrical circuits are covered with first and second solder masks, respectively, so as to avoid environmental effect and improve preciseness of the circuits.
Abstract:
Disclosed is a method of manufacturing a stacked multilayer structure, including the steps of forming a first circuit layer with bumps on a substrate, punching an aluminum plate to form recesses corresponding to the bumps, forming openings in a plastic film including a glass fiber layer corresponding to the bumps, pressing the aluminum plate, the plastic film and the substrate, removing the aluminum plate, polishing to level the resulting surface, forming a second circuit layer connected to the first circuit layer, and finally removing the substrate to form the stacked multilayer structure. Because the glass fiber layer in the plastic film is not exposed after polishing, the thickness of the dielectric layer is uniform and the reliability of the circuit layer is improved so as to increase the yield.
Abstract:
A method of manufacturing a laminate circuit board which includes the sequential steps of metalizing the substrate to form the base layer, forming the first circuit metal layer, forming at least one insulation layer and at least one second circuit metal layer interleaved, removing the substrate, forming the support frame and forming the solder resist is disclosed. The laminate circuit board has a thickness less than 150 μm. The support frame which does not overlap the first circuit metal layer is formed on the edge of the base layer by the pattern transfer process after the substrate is removed. The base layer formed of at least one metal layer is not completely removed. The support frame provides enhanced physical support for the entire laminate circuit board without influence on the electrical connection of the circuit in the second circuit metal layer, thereby solving the warping problem.
Abstract:
Disclosed is a method of manufacturing a stacked multilayer structure, including the steps of forming a first circuit layer with bumps on a substrate, punching an aluminum plate to form recesses corresponding to the bumps, forming openings in a plastic film including a glass fiber layer corresponding to the bumps, pressing the aluminum plate, the plastic film and the substrate, removing the aluminum plate, polishing to level the resulting surface, forming a second circuit layer connected to the first circuit layer, and finally removing the substrate to form the stacked multilayer structure. Because the glass fiber layer in the plastic film is not exposed after polishing, the thickness of the dielectric layer is uniform and the reliability of the circuit layer is improved so as to increase the yield.
Abstract:
A chip support board structure which includes at least a metal substrate, a block layer, a paddle, an insulation layer, a circuit layer and a solder resist is disclosed. The circuit layer connects with the paddle. The material of the block layer is different from that of the metal substrate and the block layer is provided between the metal substrate and the paddle such that the shape and the depth of the paddle is maintained constant and the problem of different depth and easily peeling off is avoided, thereby improving the yield rate of the chip support board.
Abstract:
A chip support board structure which includes at least a metal substrate, a block layer, a paddle, an insulation layer, a circuit layer and a solder resist is disclosed. The circuit layer connects with the paddle. The material of the block layer is different from that of the metal substrate and the block layer is provided between the metal substrate and the paddle such that the shape and the depth of the paddle is maintained constant and the problem of different depth and easily peeling off is avoided, thereby improving the yield rate of the chip support board.
Abstract:
A method of manufacturing a laminate circuit board which includes the sequential steps of metalizing the substrate to form the base layer, forming the first circuit metal layer, forming at least one insulation layer and at least one second circuit metal layer interleaved, removing the substrate, forming the support frame and forming the solder resist is disclosed. The laminate circuit board has a thickness less than 150 μm. The support frame which does not overlap the first circuit metal layer is formed on the edge of the base layer by the pattern transfer process after the substrate is removed. The base layer formed of at least one metal layer is not completely removed. The support frame provides enhanced physical support for the entire laminate circuit board without influence on the electrical connection of the circuit in the second circuit metal layer, thereby solving the warping problem.