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.
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.