Abstract:
In an electromagnetic bandgap structure including a plurality of conductive plates and a stitching via part, in which the plurality of conductive plates are placed on a first planar surface, the stitching via part includes a first via having one end part connected to one of the two conductive plates, a second via having one end part connected to the other of the two conductive plates, a spiral connector forming a spirally-shaped serial link structure on at least one vertical planar surface that is perpendicular to the first planar surface, a first conductive pattern connecting one end part of the spiral connector and the other end part of the first via with each other and a second conductive connecting pattern connecting the other end part of the spiral connector and the other end part of the second via with each other.
Abstract:
A method of manufacturing a circuit board that includes: forming a conductive relievo pattern, including a first plating layer, a first metal layer, and a second plating layer stacked sequentially in correspondence with a first circuit pattern, on a seed layer stacked on a carrier; stacking and pressing together the carrier and an insulator, such that a surface of the carrier having the conductive relievo pattern faces the insulator; transcribing the conductive relievo pattern into the insulator by removing the carrier; forming a conduction pattern, including a third plating layer and a second metal layer stacked sequentially in correspondence with a second circuit pattern, on the surface of the insulator having the conductive relievo pattern transcribed; removing the first plating layer and seed layer; and removing the first and second metal layers, can provide a circuit board that has high-density circuit patterns without an increased amount of insulator.
Abstract:
A board on chip package including a photo solder resist having a cavity and a pattern on one side, the pattern corresponding to a circuit wire; a solder ball pad accommodated in the cavity; a circuit wire electrically connected with the solder ball pad, and formed on the other side of the photo solder resist; a semiconductor chip mounted on the solder ball pad by a flip chip bonding; and a passivation material to mold the semiconductor chip.
Abstract:
A method for manufacturing a substrate having a cavity is disclosed. The method comprises: (a) forming a first circuit patter on both sides of a seed layer by use of a first dry film, the seed layer being for forming a circuit pattern on both sides; (b) laminating a second dry film on the first dry film on both sides of the seed layer, the thickness of the second dry film corresponding to the depth of the cavity to be formed; (c) laminating a dielectric layer on an area outside of where the cavity is to be formed on both sides of the seed layer, the thickness of the dielectric layer corresponding to the depth of the cavity to be formed; (d) laminating on the seed layer a copper foil laminated master having a second circuit pattern; and (e) forming the cavity by peeling off the first dry film and the second dry film after removing the seed layer. The method for manufacturing a substrate with a cavity in accordance with the present invention can improve the efficiency of a substrate manufacturing process by using both sides of a seed layer to manufacture the substrate with a cavity.
Abstract:
A board having buried patterns is disclosed. The board may include an insulation panel, a first pattern buried in one side of the insulation panel, a second pattern buried in the other side of the insulation panel with a predetermined insulating thickness between the first pattern and the second pattern, and a via which electrically connects the first pattern and the second pattern. The board having buried patterns according to certain embodiments of the invention can have greater rigidity compared to a board having exposed patterns, for the same insulating thickness. Also, a carrier-insulation set having a particular amount of thickness can be utilized to satisfy the thickness requirement in employing an existing roller apparatus intended for thicker boards.
Abstract:
Disclosed is a printed circuit board with a weak magnetic field sensor according to the present invention, which includes a substrate having first excitation circuits and first detection circuits formed on both sides thereof. First laminates are layered on both sides of the substrate, and have soft magnetic cores with a predetermined shape formed thereon. Second laminates are layered on the first laminates, and have second excitation circuits and second detection circuits, connected through via holes to the first excitation circuits and first detection circuits, respectively, so that the first and second excitation circuits and first and second detection circuits are wound around the soft magnetic cores, formed thereon. The soft magnetic cores each include a magnetic core and non-magnetic metal layers formed on both sides of the magnetic core.
Abstract:
A method of manufacturing a circuit board is disclosed. A method of manufacturing a circuit board that includes forming a first circuit pattern on the insulation layer of a carrier, in which an insulation layer and a first seed layer are stacked in order; stacking and pressing the carrier and an insulation board with the side of the carrier having the first circuit pattern facing the insulation board; removing the carrier to transfer the first circuit pattern and the insulation layer onto the insulation board; and forming a second circuit pattern on the insulation layer transferred to the insulation board, allows fine pitch circuit patterns to enable the manufacture of fine circuit patterns of high density on the board, and allows the manufacture of a multi-layer circuit board with a simple process.
Abstract:
A printed circuit board having embedded electronic components and a manufacturing method thereof are disclosed. With the printed circuit board having embedded electronic components, including a core sheet, a first electronic component mounted on one side of the core sheet, a second electronic component mounted on the other side of the core sheet and overlapping the first electronic component, a first insulation layer stacked on one side of the core sheet and covering the first electronic component, a second insulation layer stacked on the other side of the core sheet and covering the second electronic component, and a circuit pattern formed on the surface of the first insulation layer or the second insulation layer, the density of the printed circuit board having embedded components is improved, as a plurality of electronic components are embedded simultaneously, and when a thin CCL substrate or a metal substrate is used as the core, a metal substrate in particular, the heat-releasing property and mechanical strength are improved, including increased bending strength in a thermal-stress environment, as electronic components are mounted on both sides of the core sheet.
Abstract:
A method for manufacturing a substrate having a cavity is disclosed. The method comprises: (a) forming a first circuit pattern on one side of a seed layer by use of a first dry film; (b) laminating a second dry film on the first dry film, the thickness of the second dry film corresponding to the depth of the cavity to be formed; (c) laminating a dielectric layer on an area outside of where the cavity is to be formed, the thickness of the dielectric layer corresponding to the depth of the cavity to be formed; (d) laminating on the seed layer a copper foil laminated master having a second circuit pattern; and (e) forming the cavity by peeling off the first dry film and the second dry film after removing the seed layer. The method in accordance with the present invention can mount a plurality of integrated circuits by reducing the thickness of a substrate on a package on package.
Abstract:
A Printed Circuit Board (PCB) having a weak magnetic field sensor of the present invention includes a base plate on which a first excitation circuit and a first detection circuit are formed on each of the sides thereof, soft magnetic core bodies laminated on the top and bottom of the base plate, respectively, and formed of a plurality of soft magnetic cores, and outer layers that are laminated on the soft magnetic core bodies, respectively, and on which a second excitation circuit and a second detection circuit connected to the first excitation circuit and the first detection circuit through via holes are formed so as to surround the soft magnetic cores, respectively. The present invention is characterized in that the soft magnetic cores, the excitation circuit and the detection circuit formed on one side of the base plate are perpendicular to the soft magnetic cores, the excitation circuit and the detection circuit formed on the other side of the base plate.