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 method for manufacturing a flex-rigid wiring board, including preparing a flexible wiring board having a flexible base material and having a conductive layer over the flexible base material, making a cut in the flexible wiring board to form a cut portion, and folding at least one portion of the flexible wiring board using the cut portion to form one or more folding portions such that the flexible wiring board is extended in length, and connecting the flexible wiring board to a rigid wiring board including a rigid base material and having a conductive layer over the rigid base material.
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.
Abstract:
A wiring board includes an insulating board, a wiring sub board having a wiring layer, and an insulating layer. The insulating layer has a via hole in which a conductor is formed by plating. The insulating board and the wiring sub board are horizontally laid out. The insulating layer is laid out to cover a boundary portion between the insulating board and the wiring sub board and continuously extends from the insulating board to the wiring sub board. A resin which constitutes the insulating layer is filled in the boundary portion. The conductor is electrically connected to the wiring layer.
Abstract:
A flex-rigid wiring board including a rigid substrate including a rigid base material and a conductor layer, and a flexible substrate having a conductor layer. The conductor layer of the flexible substrate is electrically connected to the conductor layer of the rigid substrate. The rigid substrate has a recessed portion which is formed on a surface of the rigid substrate and which accommodates an electronic component.
Abstract:
A manufacturing method of a printed wiring board, including forming a plurality of electrodes on a conductive layer formed on a substrate by a plating method, forming an insulation layer on the electrodes and the conductive layer, removing the substrate from the conductive layer, patterning the conductive layer except for a resistor forming region reserved for forming a resistor, thereby forming an external connection conductive pattern, and forming a resistor in the resistor forming region such that the resistor is separated by a space from the external connection conductive pattern.
Abstract:
This invention provides a multilayer printed wiring board in which electric connectivity and functionality are obtained by improving reliability and particularly, reliability to the drop test can be improved. No corrosion resistant layer is formed on a solder pad 60B 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, land 60A in which the corrosion resistant layer is formed is unlikely to occur contact failure even if a carbon pillar constituting an operation key makes repeated contacts.
Abstract:
A printed wiring board includes a first substrate having a recess portion and multiple conductors, a second substrate having multiple conductors and inserted in the recess portion of the first substrate such that the first substrate has a surface exposing at least a portion of a surface of the second substrate. The multiple conductors in the first substrate is electrically connected to the multiple conductors in the second substrate, and the second substrate has density of the conductors which is higher than density of the conductors of the first substrate.
Abstract:
A wiring board assembly and a method of making a wiring board assembly. The wiring board assembly includes a first wiring board having a first substrate, a non-pliable second substrate having a smaller mounting area than a mounting area of the first substrate and a base substrate laminated between the first substrate and the second substrate such that the first substrate extends beyond an edge of the second substrate. At least one via formed in at least one of the first substrate or the second substrate. A second wiring board includes a pliable member connecting the first wiring board to the second wiring board.