Abstract:
A method of forming a buried die module includes providing an initial laminate flex layer and forming a die opening through the initial laminate flex layer. A first uncut laminate flex layer is secured to the first surface of the initial laminate flex layer by way of an adhesive material and a die is positioned within the die opening of the initial laminate flex layer and onto the adhesive material. A second uncut laminate flex layer is secured to the second surface of the initial laminate flex layer by way of an adhesive material and the adhesive materials are then cured. Vias and metal interconnects are formed in and on the first and second uncut laminate flex layers, with each of the metal interconnects extending through a respective via and being directly metalized to a metal interconnect on the initial laminate flex layer or a die pad on the die.
Abstract:
A printed wiring board includes: an inner layer structure body containing at least an inner layer insulative base material composed of a glass cloth and resin which covers the glass cloth and not containing a resin insulative base material composed only of resin; outer layer wiring formed on a first face of the inner layer structure body; and a solder resist layer formed on a surface of the outer layer wiring, wherein in the inner layer structure body, an opening part is formed, and the solder resist layer is composed of a first ink part covering at least the outer layer wiring that is formed on a partial region of the first face which corresponds to the opening part and a second ink part interposing both ends of the first ink part and being lower in flexibility than the first ink part.
Abstract:
A method of manufacturing a component-built-in wiring substrate which exhibits excellent reliability, through improvement of adhesion between a resin filler and a core substrate, is provided. In some embodiments the method comprises a core substrate preparation step for preparing a core substrate, an accommodation-hole forming step for forming an accommodation hole in the core substrate, and a through-hole forming step for forming through-holes. In a plating-layer forming step, a plating layer is formed on an inner wall surface of the accommodation hole and plating layers are formed on the inner wall surfaces of the through-holes, which become through-hole conductors each having a hollow. In an accommodation step, a component is accommodated in the accommodation hole. In a resin charging step, a resin filler is filled into a gap between component side-surfaces and the inner wall surface of the accommodation hole and into the hollows.
Abstract:
Provided is a hybrid substrate with high density and low density substrate areas and a method of manufacturing the same. The hybrid substrate with high density and low density substrate areas includes a low density substrate layer having a cavity and a low density area, a high density substrate layer mounted in the cavity of the low density substrate layer and formed of a high density area having a higher pattern density than that of the low density area, an insulating support layer comprising a deposition area formed on upper portions, lower portions and the upper and lower portions of the high density substrate layer and the low density substrate layer, insulating layer vias passing through the deposition area of the insulating support layer and connected to patterns of the high density substrate layer and the low density substrate layer, and an outer pattern layer.
Abstract:
Package assemblies including a die stack and related methods of use. The package assembly includes a substrate with a first surface, a second surface, and a third surface bordering a through-hole extending from the first surface to the second surface. The assembly further includes a die stack, a conductive layer, and a lid. The die stack includes a chip positioned inside the through-hole in the substrate. A section of the conductive layer is disposed on the third surface of the substrate. A portion of the lid is disposed between the first chip and the section of the conductive layer. The conductive layer is configured to be coupled with power, and the lid is configured to be coupled with ground. The portion of the lid may act as a first plate of a capacitor, and the section of the conductive layer may act as a second plate of the capacitor.
Abstract:
A wiring board of an embodiment includes a through via, a first insulating film disposed around the through via, a second insulating film disposed around the first insulating film, a third insulating film disposed around the second insulating film and a resin disposed around the third insulating film. The resin includes fillers. The second insulating film has a relative permittivity lower than a relative permittivity of the first insulating film. The third insulating film has a relative permittivity higher than a relative permittivity of the second insulating film.
Abstract:
A circuit board (1) is provided comprising a plurality of insulating layers, at least one ground layer and at least one layer comprising signal traces. The circuit board comprises at least a first conductive via (17) and a second conductive via (17). The first conductive via and the second conductive via penetrate through at least a first insulating layer of the plurality of insulating layers and are connected to a signal trace. The first conductive via and the second conductive via are arranged adjacent each other. At least in the first insulating layer the first conductive via and the second conductive via are separated in a first direction of separation (R) by a first adjustment portion comprising a dielectric material property different from the first insulating layer.
Abstract:
Provided is a substrate with a built-in electronic component that can minimize an occurrence of a deformation such as warping or distortion of the substrate with a built-in electronic component, which is caused by a difference in rigidity between a region of low rigidity and a region of high rigidity that are formed in a core layer thereof. In the substrate with a built-in electronic component, electronic components 12 are respectively housed in a plurality of housing portions 11a1 that are formed in a core layer 11a, and in the core layer 11a, a plurality of openings 11a2 filled with an insulator 11k are formed.
Abstract:
A method of manufacturing a component-built-in wiring substrate which exhibits excellent reliability, through improvement of adhesion between a resin filler and a core substrate, is provided. In some embodiments the method comprises a core substrate preparation step for preparing a core substrate, an accommodation-hole forming step for forming an accommodation hole in the core substrate, and a through-hole forming step for forming through-holes. In a plating-layer forming step, a plating layer is formed on an inner wall surface of the accommodation hole and plating layers are formed on the inner wall surfaces of the through-holes, which become through-hole conductors each having a hollow. In an accommodation step, a component is accommodated in the accommodation hole. In a resin charging step, a resin filler is filled into a gap between component side-surfaces and the inner wall surface of the accommodation hole and into the hollows.
Abstract:
The presently claimed invention is to provide a package for compact RF signal system, and a method to form the package thereof in order to miniaturize the size of package, improve signal integrity, and reduce manufacturing cost. The package comprises a hybrid substrate with a sandwiched structure, in which the hybrid substrate comprises an upper layer and a lower layer with different dielectric properties being separated by an interposer for improving electrical isolation and mechanical stiffness. Metal layers are formed on the sidewalls of the opening to surround an active component, such that the metal sidewalls together with two ground plates in the upper and lower layers constitute a self-shielding enclosure inside the package to protect the active component.