Method of tuning apparatus by low power laser beam removal
US4288530A · kind A · utility
19Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Oct 15, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film structure is provided with the capability of low-power laser tuning and trimming. Trim windows in a plated ground plane are incorporated to allow automated tuning procedures using relatively low-power lasers. The trim windows are conductive, but the heavier layer of plated copper is omitted from those areas, leaving only the titanium/evaporated copper/ gold layers. The method can also provide for areas of bare substrate if desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.