Abstract:
Patterns of conductors which are destined as current supply members of a semiconductor body, for example, an integrated circuit, are provided on an insulating flexible foil of a synthetic material resin. Each pattern of conductors consists of two groups of conductors. In order to be able to provide the conductors in series production by electrodeposition, a large number of rows of conductor tracks is provided on the foil, the outer ends of the conductor tracks of corresponding groups in a row being connected to a continuous metal track. A connection track between the metal tracks is provided between at least a number of successive patterns of conductors in a row. The tracks are then covered by means of an electrodeposition process by at least one metal layer of the desirable thickness.
Abstract:
A method of manufacturing a heat exchanger for exchanging heat between helium flows in a temperature range below 2K, comprising two end plates having inlet and outlet apertures, and a stack of very thin foils arranged between the end plates with passageways that extend transverse to the planes of the foils and separate ducts in the planes of the foils which communicate with the passageways. During manufacture the foils are attached with supports provided between foils, which supports are removed by means of a rinsing liquid after the foils have been soldered to each other.