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.
Abstract:
A method for fabricating an interlayer conducting structure of an embedded circuitry is disclosed. In accordance with the method for fabricating an interlayer conducting structure of an embedded circuitry of the present invention, there is no laser conformal mask formed prior to laminating the first and second lamination plates. Instead, after the first and second lamination plates are laminated, a laser boring process is directly conducted to form a via hole. In such a way, even when there is an offset between the first and the second lamination plates in alignment, the risk of short circuit between different layers of lamination plates can be lowered without improving an interlayer offset value.
Abstract:
A manufacturing method for mainly embedding the passive device structure in the printed circuit board is presented. In this structure, both the source electrode and the ground electrode of the passive device belong to the same level, and includes several source branches and several ground branches that are formed vertically on the inside of the dielectric layer of the circuit board which are connected, respectively, to avoid the conducting between the source electrode and the ground electrode during lamination. When it is in the form of the capacitor structure, through the use of the ultra-fine wiring technique, these source branches and ground branches are separated by a small gap between each other. Therefore, the side face area and quantities of the source branches and ground branches are both increased.
Abstract:
Embedded passive device structure and its manufacturing method for mainly embedding the passive device structure in the printed circuit board are presented. In this structure, both the source electrode and the ground electrode of the passive device belong to the same level, and includes several source branches and several ground branches that are formed vertically on the inside of the dielectric layer of the circuit board which are connected, respectively, to avoid the conducting between the source electrode and the ground electrode during lamination. When it is in the form of the capacitor structure, through the use of the ultra-fine wiring technique, these source branches and ground branches are separated by a small gap between each other. Therefore, the side face area and quantities of the source branches and ground branches are both increased.
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.