Method for programming electrically programmable fuse
US10714200B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2018 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Nov 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L23/5256
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for programming an electrically programmable fuse is disclosed. As conductive medium of the electrically programmable fuse exhibits different physical changes under different conditions, the conductive medium is changed from an initial physical state to a first physical state by using a first programming condition to program the electrically programmable fuse from a low resistance state to a medium resistance state, and the conductive medium is changed from the initial physical state or the first physical state to a second physical state by using a second programming condition to program the electrically programmable fuse from the low resistance state or the medium resistance state to a high resistance state. Transitions of three information storage states are achieved through two different programming conditions, so that the information storage density and chip area utilization rate of an electrically programmable fuse device can be significantly improved, and chip size reduction is facilitated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.