Very fine-grain voltage island integrated circuit
US7247894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2005 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Jan 26, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods of supplying voltages to integrated circuits are provided. A high voltage VddH and/or a low voltage VddL can be supplied to a filler cell and routed to other cells. Each of the VddH and VddL is carried by one of a first voltage supply wire and a second voltage supply wire. A voltage routing wire routes desired voltage(s) to a filler cell. The first and the second voltage supply wires are preferably formed parallel to the voltage routing wire with their edges substantially aligned to the edges of the voltage routing wire. Vias are made to route the desire voltage. Also preferably, the first voltage supply wire is an M1 wire formed outside the filler cell while the second voltage supply wire is an M2 wire formed inside the filler cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.