Abstract:
A method of forming a device associated with a via includes forming an opening or via, and forming at least a pair of conducting paths within the via. Also disclosed is a via having at pair of conducting paths therein.
Abstract:
Disclosed herein is a method of manufacturing a printed circuit board, including: forming a buildup layer on a base substrate including a circuit layer connected with a first via penetrating an insulation layer; forming a viahole penetrating the buildup layer and at least a part of the first via; and forming an interlayer connection member in the viahole. The method is advantageous in that a process of forming a multilayer connection structure can be simplified, and an error in the formation of a viahole can be minimized.
Abstract:
This invention relates to a method for the fabrication of electrical and electronic devices using a photoresist deposited in pre-existing through holes in a device structure and a thick film paste, and to the devices made by such method. The method allows thick film paste deposits in the corners of the holes. This invention also relates to devices made with thick film pastes that are patterned using a diffusion layer made from residual photoresist deposits in a hole.
Abstract:
A wiring substrate 20, comprising a glass substrate, which is provided with through holes 20c, each having a tapered part 20d that becomes large in opening area at the side of an input surface 20a, and conductive members 21, formed on the inner walls of through holes 20c, is used. A semiconductor device 5 is arranged by connecting bump electrodes 17, provided on an output surface 15b of a PD array 15 in correspondence with conductive members 21, to input portions 21a of conductive members 21 formed on input surface 20a of wiring substrate 20. A radiation detector is arranged by connecting a scintillator 10 via an optical adhesive agent 11 to a light-incident surface 15a of PD array 15 and connecting a signal processing element 30 via bump electrodes 31 to output surface 20b of wiring substrate 20. A semiconductor device, with which the semiconductor elements and the corresponding conductive paths of the wiring substrate are connected satisfactorily, and a radiation detector using this semiconductor device are thus provided.
Abstract:
A multilayer printed wiring board including insulating layers, conductor layers stacked alternately over the insulating layers, respectively, and viaholes formed in the insulation layers and electrically connecting the conductor layers through the insulation layers. The viaholes include a first group of viaholes and a second group of viaholes. The viaholes in the first group are tapered toward the viaholes in the second group, and the viaholes in the second group are tapered toward the viaholes in the first group. The viaholes in the first group and the the viaholes in the second group are formed in the insulating layers, respectively, and the viaholes are formed by plating openings formed after lamination of respective ones of the insulating layers, and each of the insulating layers is about 100 μm or less in thickness.
Abstract:
A method for manufacturing a substrate with a metal film includes preparing an insulative substrate having the first surface and the second surface on the opposite side of the first surface, forming in the insulative substrate a penetrating hole having the inner wall tapering from the first surface of the insulative substrate toward the second surface, forming a layer of a composition containing a polymerization initiator and a polymerizable compound on the inner wall of the penetrating hole, irradiating the layer of the composition with energy such that a polymer is formed on the inner wall of the penetrating hole, applying a plating catalyst on the polymer, and forming a plated-metal film on the inner wall of the penetrating hole.
Abstract:
Provided are connection structures for a microelectronic device and methods for forming the structure. A substrate is included having opposing surfaces and a plurality of holes extending through the surfaces. Also included is a plurality of electrically conductive posts. Each post extends from a base to a tip located within a corresponding hole of the substrate. An additional substrate may be provided such that the base of each post is located on a surface thereof. Additional electrically conductive posts may be provided having tips in corresponding holes of the additional substrate. Optionally, a dielectric material may be placed between the substrate and the posts.
Abstract:
A disk drive suspension interconnect, and method therefor. The interconnect has a metal grounding layer, a metal conductive layer and an insulative layer between the metal grounding layer and the conductive metal layer. A circuit component such as a slider is electrically connected to the conductive layer along a grounding path from the circuit component and the conductive layer to the metal grounding layer through an aperture in the insulative layer. For improved electrical connection a tie layer is provided through the insulative layer onto the grounding layer in bonding relation with the ground layer. A conductor is deposited onto both the conductive metal layer and the tie layer in conductive metal layer and tie layer bonding relation, and the circuit component is thus bonded to the grounding layer by the conductor.
Abstract:
A method for forming an plurality of paths on a substrate includes drilling an opening for a via to a depth to expose a first pad and a second pad, lining the opening with a conductive material, and insulating a first portion of the lining in the opening from a second portion of the lining in the opening to form a first electrical path contacting the first pad and a second electrical path contacting the second pad.
Abstract:
A printed wiring board has an insulating resin substrate having a first surface and a second surface, the insulating resin substrate having one or more penetrating-holes passing through the insulating resin substrate from the first surface to the second surface, a first conductor formed on the first surface of the insulating resin substrate, a second conductor formed on the second surface of the insulating resin substrate, and a through-hole conductor structure formed in the penetrating-hole of the insulating resin substrate and electrically connecting the first conductor and the second conductor. The penetrating-hole has a first portion having an opening on the first surface and a second portion having an opening on the second surface. The first portion and the second portion are connected such that the first portion and the second portion are set off from each other.