Abstract:
Le but de la présente invention est d'obtenir un circuit électronique utilisé par exemple dans une carte ou une étiquette très bon marché tout en conservant une fiabilité élevée. Ceci concerne en particulier la connexion d'un ou des composants électroniques sur les pistes conductrices au moyen de ponts conducteurs qui traversent le substrat.Le circuit électronique selon l'invention comprend au moins un composant électronique (6), un substrat (5), sur une première face de ce substrat est appliqué une couche adhésive et une couche conductrice constituée par une pluralité de pistes (4). Le composant électronique (6) comporte au moins deux plages de connexion (7). Une de ces plages (7) est reliée électriquement ô la couche conductrice par un pont conducteur formé par un segment conducteur (1) délimité dans la couche conductrice seule. Ce segment (1), dépourvu de substance adhésive, traverse le substrat (5) au moyen d'un passage (2, 3) et relie la plage de connexion (7).
Abstract:
A circuit board (10) comprises a first substrate (11) with a predetermined wiring pattern (16) and a second substrate (12) with a predetermined wiring pattern (17), and they are connected together electrically and/or mechanically and bent in the connection. The connection includes a foldable joint material (13) composed of a thin base film (20) holding a plurality of parallel leads (14), and the joint material (13) connects the first and second substrates (11, 12) together.
Abstract:
Multilayer components such as circuit panels are fabricated by connecting conductive features such as traces (30, 50) on two or more superposed substrates using leads (70) extending through an intermediate dielectric layer (72). The leads can be closely spaced to provide a high density vertical interconnection, and can be selectively connected to provide customization of the structure.
Abstract:
This invention concerns a device with an electrical circuit (1) with a grid (12) stamped out of a metal band which conductively connects electrical components (11). The stamped grid (12) has connecting means (122) for receiving an inserted conductor (2) and establishing electrical contact with it.
Abstract:
A circuit board is disclosed comprising a substantially non-conductive substrate (12) and first and second rigid sheets (14, 16). The first sheet (14) forms a grid pattern substantially encapsulated by the substrate (12), and a portion (20) of the first sheet extends beyond a boundary of the substrate to form a first interconnection terminal. The second sheet (16) is also substantially encapsulated by the substrate (12) and has a portion which extends beyond the boundary of the substrate (12) to form a second interconnection terminal. The second sheet (16) acts as an electromagnetic interference shield, and also has a coefficient of thermal expansion less than a coefficient of thermal expansion of the substrate (12).
Abstract:
A flexible circuit construction includes a polymeric sheet, via holes in the sheet and metal circuitry disposed on the sheet. The circuitry terminates at a cantilever end partially spanning the via hole to which a solder ball is subsequently attached. The cantilever end allows the solder ball to move relative to the flexible circuit and thus compensate for misalignment and differential thermal expansion effects.
Abstract:
Resilient contact structures (430) are mounted directly to bond pads (410) on semiconductor dies (402a, 402b), prior to the dies (402a, 402b) being singulated (separated) from a semiconductor wafer. This enables the semiconductor dies (402a, 402b) to be exercised (e.g., tested and/or burned-in) by connecting to the semiconductor dies (702, 704) with a circuit board (710) or the like having a plurality of terminals (712) disposed on a surface thereof. Subsequently, the semiconductor dies (402a, 402b) may be singulated from the semiconductor wafer, whereupon the same resilient contact structures (430) can be used to effect interconnections between the semiconductor dies and other electronic components (such as wiring substrates, semiconductor packages, etc.). Using the all-metallic composite interconnection elements (430) of the present invention as the resilient contact structures, burn-in (792) can be performed at temperatures of at least 150 DEG C, and can be completed in less than 60 minutes.
Abstract:
A notch portion (12) is formed by partly scraping the substrate material along a crease that has been set in advance in the insulating substrate (11), a first portion (14) and a second portion (15) that are divided along the crease are folded and are integrally joined together by using an adhesive or by welding. A conducting pattern (17) is formed on the surface of the insulating substrate (11) at the notch portion between the first portion and the second portion spanning across the crease, and wiring patterns are formed on both surfaces of the printed wiring board (20) being directly conducting to each other without the need to forming a through hole. Use of this printed wiring board makes it possible to realize various electronic devices such as liquid crystal display device, electronic printer, etc., as well as portable information devices in small sizes, reduced weight, decreased thicknesses and at reduced costs.
Abstract:
A connector for microelectronic elements includes a sheet-like body (30) having a plurality of holes (36), desirably arranged in a regular grid pattern. Each hole is provided with a resilient laminar contact (38) having a plurality of projections (42) extending inwardly over the hole in the body. Microelectronic elements (68) having bump leads (70) such as solder balls thereon may be engaged with the connector by advancing the bump leads into the holes of the connector to engage the bump leads with the contacts. The assembly can be tested, and if found acceptable, the bump leads can be permanently bonded to the contacts.