Electrical circuits with very high conductivity and high fineness, processes for fabricating them, and devices comprising them
US5846854A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1996 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Jan 18, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10287
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This circuit comprises an insulating substrate covered on at least part of its surface by a fine conducting layer (7) whose geometrical form corresponds to the layout chosen for the circuit; the said conducting layer having one or more very fine grooves (9) with a depth of more than 1 .mu.m engraved in the substrate; the groove or grooves (9) being completely filled by at least two superimposed components: the first, situated at the bottom of the groove, consisting of a highly conductive material, (conducting wire or conducting section, or a conducting substance produced by treatment of a liquid, powdery or pastelike precursor material previously positioned in the groove); the second, which seals the groove, being produced by treatment of a liquid powdery or pastelike precursor material (11), which may or may not be conducting; the treatments having imparted to the said precursor materials their solid consistency and their final properties; the conducting layer (7) being deposited in such a way that it is in contact with the conducting components(s) positioned in the groove before filling, at an intermediate stage, or after the sealing of the groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.