Backplane fabrication method
US4450029A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1982 |
| Grant date | May 22, 1984 |
| Priority date | — |
| Expiry date | Jan 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1082
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A backplane power distribution system characterized by generally uniform current densities so as to be capable of handling very high levels of current. This is achieved with a stepped backplane construction. For example, in a system having, in order, a first conductive layer, a first dielectric layer, a second conductive layer, and a second dielectric layer, the second conductive and dielectric layers extend transversely beyond the first conductive and dielectric layers to present a substantial exposed area of the second conductive layer. Typically, a rectangular metal bus bar is bolted to the backplane to make contact with the exposed area, and power supply connections to the bus bar are made in any convenient manner. The backplane is preferably first laminated with all layers coextensive, and portions of the first conductive and dielectric layers then removed by milling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.