Abstract:
A multilayered printed circuit board or a substrate for mounting a semiconductor device includes a semiconductor device, a first resin insulating layer accommodating the semiconductor device, a second resin insulating layer provided on the first resin insulating layer, a conductor circuit provided on the second resin insulating layer, and via holes for electrically connecting the semiconductor device to the conductor circuit, wherein the semiconductor device is accommodated in a recess provided in the first resin insulating layer, and a metal layer for placing the semiconductor device is provided on the bottom face of the recess. A multilayered printed circuit board in which the installed semiconductor device establishes electrical connection through the via holes is provided.
Abstract:
A wiring board including a main substrate having a base material and a conductive pattern formed on the base material, and a flex-rigid printed wiring board provided to the main substrate and having a rigid substrate and a flexible substrate connected to each other. The flex-rigid printed wiring board has a conductive pattern formed on the rigid substrate and/or the flexible substrate. The conductive pattern of the main substrate is electrically connected to the conductive pattern of the flex-rigid printed wiring board.
Abstract:
A flexible wiring board includes a first flexible base material with a conductor pattern formed thereon, a second flexible base material disposed adjacent to the first flexible base material and an insulating layer covering the first flexible base material and the second flexible base material. The insulating layer exposes at least one portion of the first flexible base material. A conductor pattern is formed on the insulating layer, and a plating layer is provided connecting the conductor pattern of the first flexible base material and the conductor pattern on the insulating layer.
Abstract:
A flex-rigid wiring board including an insulative substrate having a wiring layer which is formed on the insulative substrate and includes a conductor, a flexible wiring board positioned beside the insulative substrate and having a wiring layer, the wiring layer of the flexible wiring board including a conductor and being contained inside the flexible wiring board, and a first insulation layer positioned on the insulative substrate and the flexible wiring board such that a portion of the flexible wiring board is left exposed from the first insulation layer. The first insulation layer has a wiring layer which is formed on the first insulation layer and includes a conductor. The wiring layer of the first insulation layer has a thickness which is formed thicker than a thickness of the wiring layer of the flexible wiring board and a thickness of the wiring layer of the insulative substrate.
Abstract:
A wiring board has a first rigid wiring board having an accommodation portion, a second rigid wiring board accommodated in the accommodation portion, an insulation layer formed over the first rigid wiring board and the second rigid wiring board, and a joint conductor extending in a direction from a first surface of the first rigid wiring board to a second surface of the first rigid wiring board on the opposite side of the first surface of the first rigid wiring board such that the joint conductor is penetrating through the boundary between the first rigid wiring board and the second rigid wiring board and joining the first rigid wiring board and the second rigid wiring board.
Abstract:
A method of manufacturing multilayer printed wiring hoard in which electric connectivity and functionality are obtained by improving reliability and particularly, reliability to the drop test can be improved. In the inventive method, no corrosion resistant layer is formed on a solder pad on which a component is to be mounted so as to obtain flexibility. Thus, if an impact is received from outside when a related product is dropped, the impact can be buffered so as to protect any mounted component from being removed. On the other hand, a land in which the corrosion resistant layer is formed by the method is unlikely to occur contact failure even if a carbon pillar constituting an operation key makes repeated contacts.
Abstract:
A multilayer wiring board includes a multilayer wiring substrate having a concave portion which accommodates an electronic component. The multilayer wiring substrate has multiple insulation layers, multiple conductive circuits, multiple vias and an electromagnetic shielding layer. The conductive circuits are separated by the insulation layers and electrically connected through the vias. The electromagnetic shielding layer has a roughened surface and formed along one of a bottom surface and side surfaces of the concave portion in the multilayer wiring substrate.
Abstract:
A multilayered printed circuit board or a substrate for mounting a semiconductor device includes a semiconductor device, a first resin insulating layer accommodating the semiconductor device, a second resin insulating layer provided on the first resin insulating layer, a conductor circuit provided on the second resin insulating layer, and via holes for electrically connecting the semiconductor device to the conductor circuit, wherein the semiconductor device is accommodated in a recess provided in the first resin insulating layer, and a metal layer for placing the semiconductor device is provided on the bottom face of the recess. A multilayered printed circuit board in which the installed semiconductor device establishes electrical connection through the via holes is provided.
Abstract:
A flexible wiring board includes a first flexible base material with a conductor pattern formed thereon, a second flexible base material disposed adjacent to the first flexible base material and an insulating layer covering the first flexible base material and the second flexible base material. The insulating layer exposes at least one portion of the first flexible base material. A conductor pattern is formed on the insulating layer, and a plating layer is provided connecting the conductor pattern of the first flexible base material and the conductor pattern on the insulating layer.
Abstract:
A wiring board and method of forming a wiring board. The wiring board includes a first substrate and a second substrate having a smaller mounting area than a mounting area of the first substrate. A base substrate is laminated between the first substrate and the second substrate such that the first substrate extends beyond at least one edge of the second substrate. At least one of the base substrate, the first substrate or the second substrate comprises pliable resin, and at least one other of the base substrate, the first substrate or the second substrate comprises an inorganic filler.