Direct writing of conductive patterns
US4691091A · kind A · utility
43Cited by
5References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 31, 1985 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Dec 31, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/1136
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Electrically conductive paths are produced on a polymeric substrate by laser writing, i.e., by tracing desired paths on the substrate by a laser beam. The resulting paths comprise electrically conductive carbon as produced by thermal decomposition of substrate surface material; the paths can serve; e.g., as electrical interconnections akin to printed circuitry on a wiring board. Optionally, the conductivity of paths can be enhanced by electroplating a suitable conductor metal or alloy onto the paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.