Printed circuit board for prevention of unintentional electromagnetic interference
US5966294A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1997 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Dec 16, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a printed circuit board including (a) at least one dielectric layer, (b) at least two metal layers one of which acts as a ground layer, another one of which acts as a power-supplying layer, and the others of which, if any, act as a wiring layer in which a signal pattern is formed, the dielectric layer and the metal layers being alternately formed one on another, and (c) at least one resistor disposed at a marginal end of the printed circuit board between the ground layer and the power-supplying layer, the resistor having a function of disallowing current communication between the ground layer and the power-supplying layer. The above-mentioned printed circuit board prevents fluctuation in a voltage between ground and a power-supply, and further prevents unintentional electromagnetic interference and circuit malfunction caused by invasion of external electromagnetic field thereinto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.