Abstract:
A multi-layer circuit board capable of being applied with electrical testing includes a patterned metal-interface layer, a metallic delivery loading plate, an electrical connection layer, a conductive corrosion-barrier layer, a bottom dielectric layer, and a multi-layer circuit structure. The multi-layer circuit structure is disposed on the delivery loading plate through the bottom dielectric layer. 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. The delivery loading plate and the patterned metal-interface layer expose the conductive corrosion-barrier layer. Therefore, before the multi-layer circuit board is packaged, an electrical testing can be applied to the multi-layer circuit board to check if it can be operated normally. Hence, costs for figuring out reasons of the unqualified electronic component can be reduced, and responsibilities for the unqualified electrical testing result of the electronic component can be clarified.
Abstract:
A multilayer printed circuit board includes a first circuit board, a second circuit board and bonding films. The first circuit board includes a first dielectric layer, a first wiring pattern layer, a plurality of conductive blocks and a plurality of solder balls. The first wiring pattern layer is formed on a first surface of the first dielectric layer and the conductive blocks are formed on a second surface of the first dielectric layer. The solder balls are formed on a surface of the first wiring pattern layer. The second circuit board includes a second dielectric layer, a second wiring pattern layer, second conductive blocks and conductive pillars. The second wiring pattern layer is formed on a third surface of the second dielectric layer and the second conductive blocks are formed on a fourth surface thereof. The conductive pillars are formed on the second wiring pattern layer.
Abstract:
Disclosed is a modified magnetic coil structure. A substrate, at least one circuit pattern layer and a permeability enforced ring are included. The substrate is formed of an electrical insulation material, and has a through hole. The circuit pattern layer is formed of an electrically conductive material and configured in the substrate to surround but not contact the through hole. The permeability enforced ring is formed of a high permeability material and provided in the through hole so as to fully cover a sidewall of the through hole. The permeability enforced ring and the substrate form two co-planes in an upper horizontal plane and a lower horizontal plane of the modified magnetic coil structure, respectively. Therefore, the present invention employs the permeability enforced ring to greatly increase magnetic flux density to form a high permeability device, thereby improving the electromagnetic effect and properties of the magnetic coil.
Abstract:
Disclosed is a magnetic excitation coil structure including a magnetic coil sheet formed of a thin film and rolled as a cylindrical body with a hollow hole, and an insulation layer covering the outer surface of the cylindrical body formed by the magnetic coil sheet for protection. The magnetic coil sheet includes a flexible substrate, a dielectric layer attached to the flexible substrate, and a plurality of patterned circuit layers embedded in the flexible substrate and in contact with the dielectric layer. Each patterned circuit layer is separate, and the upper surfaces of the patterned circuit layers and the upper surface of the flexible substrate form a co-plane. The magnetic coil structure provides an electrical function of coil, which is enhanced by the patterned circuit layer due to its high aspect ratio of the electrical circuit, thereby greatly increasing the whole magnetic flux and electromagnetic effect.
Abstract:
A method for manufacturing a circuit board with a buried element having high density pin count, wherein a micro copper window formed in a first circuit by patterned dry film electroplating is easily controlled less than 50 μm so that the micro conduction holes formed after the laser drilling each has a diameter greatly shrunk less than 50 μm so as to highly increase density of the micro conduction holes, thereby facilitating in burial of the buried element with the high density pin count. Additionally, by disposing the micro conduction holes in the same elevation, optically aligning a fixing position for the buried element can be controlled precisely.
Abstract:
An ameliorated compound carrier board structure of Flip-Chip Chip-Scale Package has the insulating layer between the carrier board and the substrate in the prior art replaced by an anisotropic conductive film or materials with similar structure. The anisotropic conductive film has conductive particles therein to replace the conductive openings on the insulating layer in the prior art. When compressing the substrate onto the carrier board, the bottom surface of the second electrode pads are compressing the corresponding conductive particles on the second electrical contact pads, causing which to burst, therefore forming high-density compressed areas that conduct the second electrode pads and the second electrical contact pads; the conductive particles outside the high-density compressed area are not burst, forming an insulating film between the substrate and the carrier board: in other words, the anisotropic conductive film provides conduction in a Z direction. The structure can avoid the inaccuracies of distance and size of the conductive openings and the inaccuracy of the contact between the second electrode pads and the second electrical contact pads.
Abstract:
A method for manufacturing microthrough-hole includes electroplating a metal layer on a carrier plate, patterning the metal layer to form a first circuit having copper pads, covering the first circuit with a photoresist layer and not covering the copper window between two of the copper pads, etching the metal layer beneath the copper window and removing the photoresist layer, sequentially forming an insulation layer and a second circuit on the first circuit and the copper window, the second circuit layer having a stop pad corresponding to the copper window, removing the carrier plate, upward drilling through the insulation layer between the stop pad and the copper window to form a microthrough-hole beneath the stop pad, and forming a conductive layer in the microthrough-hole to form the microthrough-hole connecting the first and second circuits. The microthrough-hole and its occupied area is greatly reduced, thereby achieving high circuit density.
Abstract:
A management system includes a product specification data base for storing a plurality of product numbers and product specifications corresponding to the product numbers respectively; a parameter-setting data base for storing principles of parameter-settings; a device specification data base for storing application rules for a plurality of process devices; an execution processor coupled to the product specification data base, the parameter-setting data base and the device specification data base for processing based on the product specification data base, the parameter-setting data base and the device specification data base to produce process recipes of products corresponding to the specification numbers and converting into a plurality of process files adapted to be applied by corresponding process devices; and a process recipe data base coupled to the execution processor for storing the plurality of process files.
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:
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.