Abstract:
In a multi-layered wiring substrate according to an exemplary aspect of the present invention, a conductor formed in an edge face area functions as a pad for mounting a connector.
Abstract:
An electronic device may include a multilayer circuit board having opposing major surfaces and edge surfaces extending between the opposing major surfaces, wireless processing circuitry on at least one of the opposing major surfaces, and an antenna element on at least one of the edge surfaces. The multilayer circuit board may include a conductive trace coupling the antenna element to the wireless processing circuitry.
Abstract:
A semiconductor device achieving both electromagnetic wave shielding property and reliability in a heating process upon mounting electronic components. In the semiconductor device, mount devices 5 and 6 mounted on a main surface of a circuit board 1 are provided, the mount devices 5 and 6 are electrically connected to a wiring pattern 4 at the main surface of the circuit board 1, a sealant 7 of an insulating resin is formed to seal the mount devices 5 and 6, metal particles are applied to a surface of the sealant 7, and the metal particles applied are sintered, thereby forming an electromagnetic shielding layer 2, and electrically connecting the electromagnetic shielding layer 2 to a ground pattern 3 of the circuit board 1.
Abstract:
A module substrate has an interconnection electrode that is exposed at a side end face thereof. A semiconductor component including an IC chip is mounted on the module substrate. A molded part comprising a resin is formed so as to cover at least a part of the semiconductor component. A coating with higher heat conductivity than the molded part is formed on the surface of the molded part by applying a paste made of material with higher heat conductivity than the molded part. This improves heat dissipation. The coating can be formed such that it extends to the surface of the main substrate on which the module substrate with the semiconductor component is mounted and comes into contact with the interconnection electrode on the surface of the main substrate. This further improves heat dissipation.
Abstract:
A circuit board includes an electrically conductive sheet having an insulative coating surrounding the conductive sheet, with a surface of the insulative coating around an edge of the conductive sheet having an arcuate or rounded shape. At least one electrical conductor is conformally deposited on at least the rounded insulative coating around the edge of the conductive sheet and defined via photolithographic and metallization techniques. Each electrical conductor on the insulative coating thereon around the edge of the conductive sheet conforms to the arcuate or rounded shape of the insulative coating and, therefore, has an arcuate or rounded shape.
Abstract:
Provided are a memory card and a method of fabricating the memory card. The memory card includes: a printed circuit board including conductive wires exposed to at least a portion of an outer wall of the printed circuit board; at least one electronic device mounted on the printed circuit board; and a molding part sealing the at least one electronic device on the printed circuit board and the conductive wires exposed to the outer wall of the printed circuit board, and simultaneously exposing at least a portion of the outer wall of the printed circuit board.
Abstract:
A multilayer, thermally-stabilized substrate, including: a thermally-conductive core structure, including a central section located horizontally between two edge sections; a top multilayer circuit board connected to the top surface of the central portion of the core structure; and a bottom multilayer circuit board connected to the bottom surface of the central portion of the core structure. The core structure has a core thermal conductance and a effective core horizontal thermal expansion coefficient. The top and bottom multilayer circuit boards each include at least one dielectric layer and at least one electrically-conductive layer, and each have a circuit board thermal conductance that is less than the core thermal conductance of the core structure. The electrically-conductive layers of the top and the bottom circuit boards each have a conductive layer horizontal thermal expansion coefficient that is less than or equal to the effective core horizontal thermal expansion coefficient of the core structure.
Abstract:
A package substrate strip having a reserved plating bar and a metal surface treatment method thereof are provided. The metal surface treatment method forms a conductive layer connecting the reserved plating bar and bonding pads of the package substrate stripe and further forms an isolating layer covering the conductive layer. By original plating bars and the reserved plating bar, an anti-oxidation layer can be simultaneously formed on finger contacts, first ball pads electrically connected to the finger contacts, and second ball pads electrically connected to the bonding pads. The package substrate strip and the method for metal surface treatment thereof can simplify manufacturing process, reduce production cost, and improve production efficiency and yield. Furthermore, a chip package applying the package substrate strip is also provided.
Abstract:
A module board has a configuration in which a first circuit board, a first composite sheet, a second circuit board, a second composite sheet, and a third circuit board are laminated in this order. Inspection terminals are arranged in a matrix shape in a predetermined region on an upper surface of the third circuit board. Electronic components are mounted on the first and second circuit boards. The inspection terminals are electrically connected to the electronic components mounted on the first and second circuit boards through vias and wiring patterns.
Abstract:
A hybrid structure of multi-layer substrates comprises a first multi-layer substrate and a second multi-layer substrate. The first multi-layer substrate stacks up first metal layers, first dielectric layers alternately and has VIAs. A border district of a first metal layer connects with a border district of the corresponding first dielectric layer. The border districts are separated from adjacent first metal layers and adjacent first dielectric layers. The second multi-layer substrate stacks up second metal layers and second dielectric layers alternately. A border district of a second metal layer connects with a border district of the corresponding second dielectric layer. The border districts are separated from adjacent second metal layers and adjacent second dielectric layers. The VIAs are located at the border districts of the first dielectric layers and each VIA has electric conductor therein to connect one first metal layer with one second metal layer.