Selective antipad backdrilling for printed circuit boards
US9202783B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2011 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Apr 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A printed circuit board (PCB) may include antipads, used to provide clearance for backdrilling, which may be sized to allow backdrilling in a way that minimizes the presence of stubs. The PCB may include pads to connect a component to the PCB and vertically disposed vias connected to at least some of the pads. The PCB may further include horizontally disposed signal layers, electrically connected by the vias, to route signals from the component, received from the vias, to an edge of the component, in which signals associated with the component closer to an inner portion of the component are routed to the edge of the component on higher ones of the signal layers than signals associated with the component further from the inner portion of the component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.