Semiconductor integrated circuit device
US5300798A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 17, 1992 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Nov 17, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/3011
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
When a semiconductor integrated circuit device having a wiring structure of three or more layers is hierarchically considered as a collection of a plurality of functional blocks, each functional block is internally connected by wirings in the first wiring layer, in which wirings have their main extended direction prescribed to be the X-direction, and wirings in the second wiring layer, in which wirings have their main extended direction prescribed to be the Y-direction, formed over the first wiring layer. Wirings in the third wiring layer, in which wirings have their main extended direction prescribed to be the same as the wirings in the second wiring layer, formed over the second wiring layer, together with wirings in the first and second wiring layer, are used as signal wirings between functional blocks, while the wirings in the third wiring layer are used as power supply wirings for providing power supply to functional blocks. As the power supply paths to functional blocks, a plurality of power supply wirings are branched off from the power supply electrode such as a power supply pad and terminated there. The power supply electrode on the high voltage side and the power supply e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.