Abstract:
Gemäß der Erfindung wird eine Leiterplatte (14) vorgeschlagen, die vorzugsweise in gebogenem Zustand verwendet wird, wobei gemäß der Erfindung diese Leiterplatte 14) aus einem Verbundwerkstoff hergestellt ist, der aus einem Epoxidharz und aus einem Glasfasergewebe besteht.
Abstract:
La présente invention concerne un dispositif de raccordement électrique entre deux cartes de circuit imprimés, réalisé à partir d'au moins deux substrats isolants (4 et 9) percés à leurs deux extrémités et à partir de rubans conducteurs (11) disposés entre ces deux substrats, sur toute leur longueur, de façon à ménager des zones (110) où les connexions électriques consituées par les rubans conducteurs sont dénudées. Application aux cartes de circuits imprimés à haute densité.
Abstract:
Gegenstand der Erfindung ist eine entsprechend der Kontur des Einbaugerätes gebogen ausgebildete Leiterplat te (1) aus dünnem Basismaterial, deren elektronische Bau elemente (2) vorzugsweise längs einer Richtung parallel zu einer Biegeachse (3) ausgerichtet sind. Zur Vermeidung von Rißbildungen beim Biegen ist die Leiterplatte (1) mit Lötstoplack überzogen.
Abstract:
Methods are provided for manufacturing shape-retaining non-flat devices comprising elements such as components integrated on a device surface, the non-flat devices being made by deformation of a flat device. Based on the layout of a non-flat device, a layout of a flat device is first designed. A method for designing the layout of such a flat device is provided, wherein the method includes inserting mechanical interconnections between pairs of elements to unambiguously define the position of the elements on a surface of the non-flat device, thus leaving zero or less degrees of freedom for the location of the components. Based on the layout of a flat device thus obtained, the flat device is manufactured and next transformed into the shape-retaining non-flat device by means of a thermoforming process, thereby accurately and reproducibly positioning the elements at a predetermined location on a surface of the non-flat device.
Abstract:
The invention relates to an angle-adjustable and/or angled printed circuit board structure having at least two printed circuit board sections arrangeable or arranged angularly with respect to one another, wherein the printed circuit board structure contains at least one conduction element which is embedded at least predominantly in the printed circuit board structure and which extends between two connection locations and is electrically conductively connected to said connection locations, wherein the two connection locations are situated on different printed circuit board sections, wherein the printed circuit board sections are angle-adjustable and/or angled relative to one another with maintenance of the connections between the connection locations and the at least one conduction element and with bending of the at least one conduction element via a bending edge between the printed circuit board sections. In order to improve the electrical and mechanical connection between the printed circuit board sections, the invention provides for the conduction element to have a larger extent along the bending edge than perpendicularly thereto, as viewed in cross section. A corresponding method for producing this printed circuit board structure is likewise claimed.
Abstract:
The aim of the invention is to provide positioning and mounting options with improved handling characteristics even at places that are difficult to access or in other difficult conditions. Said aim is achieved by using functional elements comprising at least one area that can be foamed by supplying energy. At least one of said areas is used as a positioning element for positioning an object or for stiffening flexible or easily bendable materials in a shape-stabilizing manner.
Abstract:
A central layer (5) of glass fiber woven fabric is laminated between two layers of sheet-like material (6) more expansible and compressible than the glass fiber fabric, preferably as an organic fiber, e.g. of a polyester, aramid, polyamide or phenolic fiber, as woven or nonwoven fabric; the outer layers (6) are impregnated by treatment with a solution of an adduct between a copolymer of polybutadiene and acrylonitrile having terminal carboxyl groups with a polyfunctional epoxy resin which may be brominated, and optionally containing a curing agent, and the central layer is impregnated with the adduct or with a polyfunctional epoxy resin; heat and pressure are applied to make the laminate. A metal foil,e.g. of copper, is applied to the outer faces to provide a base of a printed circuit board, which can be bent to a desired shape.
Abstract:
A central layer (5) of glass fiber woven fabric is laminated between two layers of sheet-like material (6) more expansible and compressible than the glass fiber fabric, preferably as an organic fiber, e.g. of a polyester, aramid, polyamide or phenolic fiber, as woven or nonwoven fabric; the outer layers (6) are impregnated by treatment with a solution of an adduct between a copolymer of polybutadiene and acrylonitrile having terminal carboxyl groups with a polyfunctional epoxy resin which may be brominated, and optionally containing a curing agent, and the central layer is impregnated with the adduct or with a polyfunctional epoxy resin; heat and pressure are applied to make the laminate. A metal foil,e.g. of copper, is applied to the outer faces to provide a base of a printed circuit board, which can be bent to a desired shape.