Abstract:
A plurality of suspension boards and an inspection substrate are integrally supported by a support frame. In each suspension board, a line is formed on a conductive first support substrate via a first insulating layer. The first support substrate and the line are electrically connected by a first via in the first insulating layer. In the inspection substrate, a conductor layer is formed on a conductive second support substrate with a second insulating layer sandwiched therebetween. The second support substrate and the conductor layer are electrically connected by a second via in the second insulating layer. The first via and the second via have the same configuration.
Abstract:
A method for manufacturing a printed wiring board includes forming on a support sheet an intermediate body including a first insulation layer, a second insulation layer and a first conductive layer interposed between the first insulation layer and the second insulation layer, and separating the support sheet from the intermediate body including the insulation layer, the first conductive layer and the second insulation layer such that the intermediate body is detached from the support sheet.
Abstract:
The invention relates to a multi-pole plug connector (90) for contacting a multi-layer circuit board (51), comprising a plurality of contact elements (50a, 50b-50′a, 50′b), as well as to a multi-layer circuit board for assembly with a multi-pole plug connector (90), comprising blind boreholes (60a, 60b-60′a, 60′b) for contacting terminal pins (53a, 53b-53′a, 53′b) of the contact elements (50a, 50b-50′a, 50′b) of the multi-pole plug connector (90). The invention further relates to a combination of a multi-pole plug connector (90) for contacting with a multi-layer circuit board (51) and to a multilayer circuit board for assembly with the multi-pole plug connector (90). The plug connector (90) according to the invention is characterized by terminal pins (53a, 53b-53′a, 53′b) that have different lengths for contacting the terminal pins (53a, 53b-53′a, 53′b) with conductors (52a, 52b; 72a, 72b-72′a, 72′b) of the multi-layer circuit board (51) provided in different conductor levels (71-71′). The multi-layer circuit board (51) according to the invention is characterized by blind boreholes (60a, 60b-60′a, 60′b) that terminate in different conductor levels (71-71′) of the multilayer circuit board (51) for deliberately contacting the terminal pins (53a, 53b-53′a, 53′b) with conductors (52a, 52b; 72a, 72b-72′a, 72′b) of the multilayer circuit board (51) provided in different conductor levels (71-71′).
Abstract:
A packaging substrate includes an insulating layer, a wiring layer and a solder mask. The insulating layer and the solder mask being arranged on two opposite sides of the wiring layer. The insulating layer defines a via hole. The wiring layer covers the via hole. The wiring layer includes a pad area. Two sides of the pad area are respectively exposed outside from the solder mask and in the via hole.
Abstract:
A printed wiring board is manufactured by a method in which a laminate body having a first insulation layer and a conductive film is provided. An alignment mark is formed in the laminate body by removing at least a portion of the conductive film. An electronic component is placed on an adhesive layer provided on the first insulation layer at a position determined based on the alignment mark. After the electronic component is enclosed inside an opening of the second insulation layer, a via hole exposing a terminal of the electronic component is formed at a position determined based on the alignment mark used to determine the position of the electronic component. A via conductor is formed in the via hole, and a conductive layer is formed on the conductive film and patterned to form a conductive circuit connected to the via conductor.
Abstract:
A method for manufacturing a printed wiring board includes forming an uncalcined layer containing a raw ceramic material on a first metal layer, firing the uncalcined layer formed on the first metal layer such that a high dielectric constant layer having a ceramic body calcined in a sheet form is formed on the first metal layer, forming a second metal layer on the high dielectric constant layer on the opposite side of the high dielectric constant layer with respect to the first metal layer such that a layered capacitor having the high dielectric constant layer and first and second layer electrodes sandwiching the high dielectric constant layer is formed, and disposing the layered capacitor in a main body.
Abstract:
In a manufacturing method of a printed circuit board, a rigid substrate having a rigid-board metal layer is provided, an open slot is formed on the rigid substrate, and a flexible substrate is installed in the open slot, and the flexible substrate and the rigid substrate are securely bonded, and an increased-layer circuit layer is formed after electric circuits are manufactured on the rigid-board and flexible-board metal layers, and stacked on the rigid substrate and on an adjacent block where the flexible substrate is coupled to the rigid substrate, and an electric circuit is manufactured, and the increased-layer circuit layer is provided for electrically connecting and conducting the rigid and flexible substrates to overcome the issue of alignment errors.
Abstract:
A package substrate including an outermost interlayer resin insulating layer, a pad structure formed on the outermost interlayer resin insulating layer, a conductive connecting pin for establishing an electrical connection with another substrate, the conductive connecting pin being secured to the pad structure via a solder, and via holes formed through the outermost interlayer resin insulating layer and for electrically connecting the pad structure to one or more conductive circuits formed below the outermost interlayer resin insulating layer, the via holes being positioned directly below the pad structure.
Abstract:
A method for manufacturing a printed-circuit board including: a capacitive element forming step of embedding a capacitive element in a substrate resin layer inside a substrate that includes a plurality of wiring layers laminated with the substrate resin layer interposed in between, the capacitive element forming step including forming a lower electrode using a conductive layer on one of the plurality of wiring layers, or using one of the plurality of wiring layers; forming a crystalline metal oxide-containing capacitor dielectric film at a temperature at or below a heat-resistant temperature of the substrate resin layer, and at or above room temperature; and forming an upper electrode on an upper surface of the capacitor dielectric film on the side opposite to the lower electrode.
Abstract:
The present invention provides a printed wiring board which can prevent a plating failure in a connection hole such as a via to be formed in the printed wiring board, thereby can enhance the connection reliability and a manufacturing method therefor. The printed wiring board 100 includes a thermosetting resin sheet 16 (insulation layer) having a via hole 20 (through hole) constituted by inner wall parts having different taper angles from each other, a copper foil 17 (conductor layer) provided on the thermosetting resin sheet 16, and a wiring pattern 13 (wiring layer) which is provided so as to be exposed from the via hole 20 and is electrically connected with the copper foil 17 through the via hole 20.