Semiconductor device having optical fuse and electrical fuse
US8644086B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2011 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Mar 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor device includes a plurality of first chips, a second chip that controls the first chips, and internal wiring that connects the first chips and the second chip. The first chips each include: an optical fuse; a first latch circuit that retains information on the optical fuse; a second latch circuit that retains information on an electrical fuse, the information being supplied from the second chip through the internal wiring; and a select circuit that selects the information retained in either one of the first and second latch circuits. A redundancy determination signal is generated from the information selected. The information on the electrical fuse is transferred from the second chip to the first chips through the internal wiring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.