Abstract: An aspect of the present invention features a manufacturing method of a package on package with a cavity. The method can comprise (a) forming a first upper substrate cavity in one side of an upper substrate; (b) mounting an upper semiconductor chip on the other side of the upper substrate; (c) forming a lower substrate cavity in one side of a lower substrate; (d) mounting a lower semiconductor chip in the lower substrate cavity formed in the lower substrate; and (e) stacking the upper substrate above the lower substrate such that the first upper substrate cavity accommodates a part of the lower semiconductor chip. The package on package and a manufacturing method thereof can reduce the overall thickness of the package by forming cavities in both upper and lower substrates to accommodate a semiconductor chip mounted in the lower substrate.

Abstract: Disclosed are a printed circuit board and a manufacturing method thereof. The method of manufacturing a printed circuit board in accordance with an embodiment of the present invention includes: providing a first resin layer having a first pattern on one surface thereof; forming a conductive bump, which is electrically connected to the first pattern, on one surface of the first resin layer; compressing an insulation layer and the first resin layer such that the conductive bump passes through the insulation layer; laminating a second resin layer, which has a second pattern on a surface thereof facing the insulation layer, on the insulation layer; and forming an opening by etching a part of at least one of the first resin layer and the second resin layer.

Abstract: Disclosed herein is a multilayered printed circuit board, including: a build-up layer including a plurality of insulating layers and a plurality of circuit layers; an insulating resin layer, including bumps, formed on the outermost circuit layer of one side of the build-up layer; and a solder resist layer formed on the outermost layer of the other side of the build-up layer. The multilayered printed circuit board is manufactured by sequentially placing a build-up layer and a solder resist layer on one side of an insulating resin layer, the other side of which is provided with bumps. The present invention is advantageous in that the thickness of the multilayered printed circuit board is decreased, the production processes thereof is simplified, and the production efficiency is increased.

Abstract: Disclosed herein is a multilayered circuit board, including: a metal base layer including a metal layer formed through-holes, an insulating film formed on a surface of the metal layer, a first circuit layer having circuit patterns formed on one side of the metal layer and a second circuit layer having protruding connecting pads, formed on the other side of the metal layer; a build-up layer formed on the first circuit layer; and a solder resist layer. The multilayered printed circuit board is advantageous in that the thickness thereof is decreased and the bending strength and radiation characteristics thereof are improved.

Abstract: Disclosed herein is a multilayered circuit board, including: a multilayered printed circuit board manufactured using the method includes an insulating resin layer having via holes, on one side of which a first circuit layer including circuit patterns is formed, and on the other side of which a second circuit layer, including connecting pads, is formed, the pads protruding over the via holes; a build-up layer formed on the first circuit layer, the build-up layer including a plurality of insulating layers and a plurality of circuit layers; and a solder resist layer formed on an outermost layer of the build-up layer.

Abstract: A printed circuit board having a fine pattern and related manufacturing method that includes providing a carrier plate; coating the carrier plate with a photosensitive material; forming a first circuit pattern on the photosensitive material; forming a first circuit layer by drying a conductive paste printed into a space between the photosensitive materials where the first circuit pattern is formed; depositing an insulation layer on the first circuit layer; processing via holes penetrating the insulation layer; coating the insulation layer with the photosensitive material and then forming a second circuit pattern in the photosensitive material; forming a second circuit layer and filling the via holes by drying the conductive paste printed into a space between the photosensitive materials, where the second circuit pattern is formed, and the via holes; and removing the carrier plate.

Abstract: A printed circuit board and a method of manufacturing the printed circuit board are disclosed. The printed circuit board can include a first insulation layer, a second insulation layer stacked over the first insulation layer, a circuit pattern and a via land buried in the second insulation layer, and a via made of a conductive material penetrating the first insulation layer and integrated with the via land. The circuit pattern and via land can be buried in the insulation material, and the circuit pattern, via land, and via can be formed simultaneously as an integrated structure. Thus, the electrical reliability between the wiring pattern and the via can be increased, the heat-releasing effect of the via can be improved, and the procedure for forming the circuit patterns, via lands, and vias can be simplified, allowing greater productivity in manufacturing the substrate.

Abstract: A conductive paste and a printed circuit board using the conductive paste are disclosed. The conductive paste including conductive particles and carbon nanotubes according to the invention, can improve an electrical conductivity of the conductive paste.

Abstract: A printed circuit board and a method of manufacturing the printed circuit board are disclosed. The printed circuit board may include: an insulation layer, a circuit pattern formed on an upper surface and a lower surface of the insulation layer, and a bump penetrating the insulation layer such that the circuit pattern is electrically connected, where an alloy layer, which is configured to increase contact between the circuit pattern and the bump, may be interposed between the bump and the circuit pattern.

Abstract: A method of interconnecting layers of a printed circuit board is disclosed. The method includes: forming at least one bump on a first metal layer using a conductive paste containing carbon nanotubes, stacking an insulation layer on the first metal layer such that the bumps penetrate the insulation layer, and stacking a second metal layer on the insulation layer such that the second metal layer is electrically connected with the first metal layer by the bump.

Abstract: The method of manufacturing a printed circuit board using paste bumps includes perforating a core board to form at least one via hole, filling the at least one via hole by fill-plating and forming a circuit pattern on at least one surface of the core board, stacking a paste bump board on at least one surface of the core board, and forming an outer layer circuit on a surface of the paste bump board. The method provides a structurally stable all-layer IVH structure due to increased strength in the BVH's of the plated core boards and the interlayer connection area is increased between circuit patterns for improved connection reliability, and dimple coverage can be obtained.

Abstract: An apparatus and a method for manufacturing a printed circuit board are disclosed. The apparatus for manufacturing a printed circuit board that uses conductive bumps to interconnect layers includes: a conveyor unit, which is configured to transport a board that has the conductive bumps formed on one side; an upper roller and a lower roller, which press the board and an insulator together; an elastic coating layer, formed on a surface of the upper roller; and a cleaning device, which removes impurities from a surface of the elastic coating layer. The apparatus does not require a separate device for performing a cushioning function and a detaching function between the bumps and the rollers, and the rollers can be kept clean using a cleaning device.

Abstract: A manufacturing method for a printed circuit board is disclosed. The method includes: forming a first circuit pattern on a metal layer of a conductive carrier, which has the metal layer stacked on one side, pressing the conductive carrier and a first insulation layer together with the first circuit pattern facing the first insulation layer, forming a via by selectively removing the conductive carrier, and removing the metal layer. Using this method, a high-density thin package can be manufactured with increased reliability, and the productivity of the manufacturing process can also be improved.

Abstract: A heat-releasing PCB and a method of manufacturing the PCB are disclosed. The method of manufacturing the heat-releasing printed circuit board includes: preparing a copper clad laminate, which has at least one copper layer stacked on at least one insulation layer; forming a coating layer, made from a paste having carbon nanotubes as a major constituent, on a surface of the copper layer; and forming a circuit pattern by removing portions of the coating layer and portions of the copper layer.

Abstract: A conductive paste, a printed circuit board using the conductive paste, and a method of manufacturing the printed circuit board are disclosed. A conductive paste that includes conductive particles, a polymer, and a polymer foam, can reduce the number of printing repetitions, to simplify the manufacturing process, decrease process times, and improve reliability.

Abstract: This invention relates to a method of fabricating a paste bump for a printed circuit board, which can decrease the number of printings to thus reduce the fabrication cost and process time in the formation of the paste bump on the printed circuit board.

Abstract: A printed circuit board and a method of manufacturing the printed circuit board are disclosed. The method of manufacturing a printed circuit board, by forming at least one bump for interlayer conduction on a surface of a board and stacking an insulation layer on the surface of the board, can include the operations of forming at least one dam on the surface of the board that surrounds a region corresponding to the bump, forming the bump by printing conductive paste onto the region corresponding to the bump, and stacking the insulation layer onto the surface of the board. This method can be utilized to improve productivity and resolve the problem of spreading.

Abstract: This invention relates to a multilayer printed circuit board and a method of fabricating the same, which can increase the reliability of the multilayer printed circuit board and can decrease the process time to thus improve productivity.

Abstract: This invention relates to a printed circuit board and a method of fabricating the same, in which the thickness of a circuit pattern is decreased to thus realize a fine circuit, the circuit pattern is embedded in an insulating layer to thus decrease the thickness of a printed circuit board, and the time and cost required for the process of fabricating a printed circuit board are decreased.

Abstract: A printed circuit board using paste bumps and manufacturing method thereof are disclosed.